 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| LT1057/LT1058 Dual and Quad, JFET Input Precision High Speed Op Amps FEATURES DESCRIPTIO 14V/s Slew Rate: 10V/s Min 5MHz Gain-Bandwidth Product Fast Settling Time: 1.3s to 0.02% 150V Offset Voltage (LT1057): 450V Max 180V Offset Voltage (LT1058): 600V Max 2V/C VOS Drift: 7V/C Max 50pA Bias Current at 70C Low Voltage Noise: 13nV/Hz at 1kHz 26nV/Hz at 10Hz The LT (R)1057 is a matched JFET input dual op amp in the industry standard 8-pin configuration, featuring a combination of outstanding high speed and precision specifications. It replaces all the popular bipolar and JFET input dual op amps. In particular, the LT1057 upgrades the performance of systems using the LF412A and OP-215 JFET input duals. The LT1058 is the lowest offset quad JFET input operational amplifier in the standard 14-pin configuration. It offers significant accuracy improvement over presently available JFET input quad operational amplifiers. The LT1058 can replace four single precision JFET input op amps, while saving board space, power dissipation and cost. Both the LT1057 and LT1058 are available in the plastic PDIP package and the surface mount SO package. , LTC and LT are registered trademarks of Linear Technology Corporation. APPLICATIO S Precision, High Speed Instrumentation Fast, Precision Sample-and-Hold Logarithmic Amplifiers D/A Output Amplifiers Photodiode Amplifiers Voltage-to-Frequency Converters Frequency-to-Voltage Converters TYPICAL APPLICATIO Current Output, High Speed, High Input Impedance Instrumentation Amplifier 3 Distribution of Offset Voltage (All Packages, LT1057 and LT1058) 25 VS = 15V TA = 25C LT1057: 610 OP AMPS LT1058: 520 OP AMPS 1130 OP AMPS TESTED V2 + 1/4 LT1058 1 7.5k 4.7k 6 9.1k 5 500* 7.5k PERCENT OF UNITS 20 2 - IOUT = 2(V1 - V2) RX RX IOUT 15 - 1/4 LT1058 7 10 + 8 + 1/4 LT1058 10 5 13 - 1/4 LT1058 14 4.7k 7.5k - 6.8k 1k** 9 0 -1.0 -0.6 0.6 -0.2 0 0.2 INPUT OFFSET VOLTAGE (mV) 1.0 V1 12 + *GAIN ADJUST **COMMON MODE REJECTION ADJUST BANDWIDTH 2MHz LT1057/1058 * TA01 U LT1057/1058 * TA02 U U 10578fa 1 LT1057/LT1058 ABSOLUTE AXI U RATI GS Supply Voltage ...................................................... 20V Differential Input Voltage ....................................... 40V Input Voltage ......................................................... 20V Output Short-Circuit Duration .......................... Indefinite Storage Temperature Range ................. - 65C to 150C Lead Temperature (Soldering, 10 sec).................. 300C PACKAGE/ORDER I FOR ATIO TOP VIEW NC 1 NC 2 OUT A 3 - IN A 4 +IN A 5 V- 6 NC 7 NC 8 - A + B TOP VIEW 16 NC 15 NC 14 V+ 13 OUT B - + OUT A 1 - IN A 2 +IN A 3 V+ 4 B 16 OUT D - A + D - + 15 - IN D 14 +IN D 13 V- C 11 +IN B 10 NC 9 NC - IN B 6 OUT B 7 NC 8 SW PACKAGE 16-LEAD PLASTIC (WIDE) SO TJMAX = 150C, JA = 90C/W SW PACKAGE 16-LEAD PLASTIC (WIDE) SO TJMAX =150C, JA =90C/W OUTPUT A 1 ORDER PART NUMBER LT1057SW LT1057ISW TOP VIEW OUTPUT A -IN A +IN A V+ +IN B -IN B OUTPUT B 1 2 3 4 B ORDER PART NUMBER LT1058SW LT1058ISW ORDER PART NUMBER LT1058ACN LT1058CN LT1058AMJ LT1058MJ LT1058ACJ LT1058CJ 14 OUTPUT D - A + - 13 -IN D D + 12 +IN D 11 V- C 6 7 N14 PACKAGE 14-LEAD PDIP TJMAX = 110C, JA = 130C/W J14 PACKAGE 14-LEAD CERDIP TJMAX = 150C, JA = 100C/W Consult LTC Marketing for parts specified with wider operating temperature ranges. 2 - + - + 5 10 +IN C 9 8 -IN C OUTPUT C OBSOLETE PACKAGES Consider the N8, S8 or N14 Package for Alternate Source - + - + 12 - IN B +IN B 5 12 +IN C 11 -IN C 10 OUT C 9 NC U U W WW U W (Note 1) Operating Temperature Range LT1057AM/LT1057M/ LT1058AM/LT1058M (OBSOLETE)...- 55C to 125C LT1057AC/LT1057C/LT1057S LT1058AC/LT1058C/LT1058S ................ 0C to 70C LT1057I ...................................... -40C TA 85C TOP VIEW +IN A 1 V- 2 +IN B 3 -IN B 4 8 7 6 5 -IN A OUT A V+ OUT B ORDER PART NUMBER LT1057S8 LT1057IS8 S8 PART MARKING 1057 1057I ORDER PART NUMBER S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150C, JA = 200C/W Please note that the LT1057S8/LT1057IS8 standard surface mount pinout differs from that of the LT1057 standard CERDIP/PDIP packages. TOP VIEW V+ 8 7 OUTPUT B A -IN A 2 +IN A 3 4 V - (CASE) H PACKAGE 8-LEAD METAL CAN - ++ B - 6 -IN B 5 +IN B LT1057AMH LT1057MH LT1057ACH LT1057CH OBSOLETE PACKAGE Consider the N8 or S8 Package for Alternate Source ORDER PART NUMBER LT1057ACN8 LT1057CN8 LT1057ACJ8 LT1057CJ8 LT1057AMJ8 LT1057MJ8 OUTPUT 1 -IN A 2 +IN A 3 V- 4 TOP VIEW 8 - A + B V+ OUTPUT B - IN B + IN B 7 - + 6 5 N8 PACKAGE 8-LEAD PDIP TJMAX = 100C, JA = 130C/W J8 PACKAGE 8-LEAD CERDIP TJMAX = 150C, JA = 100C/W 10578fa LT1057/LT1058 ELECTRICAL CHARACTERISTICS SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS VS = 15V, TA = 25C, VCM = 0V unless otherwise noted. (Note 2) LT1057AM/LT1058AM LT1057AC/LT1058AC MIN TYP MAX 150 180 3 5 1012 1012 1011 4 450 600 40 50 LT1057M/LT1058M LT1057C/LT1058C MIN TYP MAX 200 220 250 4 7 1012 1012 1011 4 2.0 2.4 26 13 1.5 150 120 10.5 LT1057 LT1058 350 250 14.3 - 11.5 86 84 88 12 10 103 13 14 5 1.6 2.5 100 98 86 12 8 3 22 4 100 80 10.5 28 14 1.8 300 220 14.3 - 11.5 82 80 102 13 13 5 1.7 130 2.8 98 96 2.1 2.5 24 6 800 1200 1000 50 75 UNITS V V V pA pA pF VP-P VP-P nV/Hz nV/Hz fA/Hz V/mV V/mV V V dB dB dB V V/s MHz mA dB LT1057 LT1057 (S8 Package) LT1058 Fully Warmed Up Fully Warmed Up Differential Common Mode VCM = - 11V to 8V Common Mode VCM = 8V to 11V lOS lB Input Offset Current Input Bias Current Input Resistance Input Capacitance en en in AVOL Input Noise Voltage Input Noise Voltage Density Input Noise Current Density Large-Signal Voltage Gain Input Voltage Range CMRR PSRR VOUT SR GBW IS Common Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Slew Rate Gain-Bandwidth Product Supply Current Per Amplifier Channel Separation DC to 5kHz, VIN = 10V f = 1MHz (Note 6) VS = 10V to 18V RL = 2k 0.1Hz to 10Hz, fO = 10Hz fO = 1kHz (Note 3) fO = 10Hz, 1kHz (Note 4) VO = 10V, RL = 2k VO = 10V, RL = 1k LT1057 LT1058 3.5 132 (LT1057/LT1058 SW Package Only), VS = 15V, TA = 25C, VCM = 0V unless otherwise noted. SYMBOL VOS lOS lB PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Input Resistance -Differential -Common-Mode Input Capacitance en en Input Noise Voltage Input Noise Voltage Density 0.1Hz to 10Hz fO = 10Hz fO = 1kHz LT1057 LT1058 CONDITIONS LT1057 LT1058 Fully Warmed Up Fully Warmed Up VCM = - 11V to 8V VCM = 8V to 11V MIN TYP 0.3 0.35 5 10 0.4 0.4 0.05 4 2.1 2.5 26 13 MAX 2 2.5 50 100 UNITS mV pA pA T pF VP-P nV/Hz 10578fa 3 LT1057/LT1058 ELECTRICAL CHARACTERISTICS (LT1057/LT1058 SW Package Only), VS = 15V, TA = 25C, VCM = 0V unless otherwise noted. SYMBOL in AVOL PARAMETER Input Noise Current Density Large-Signal Voltage Gain Input Voltage Range CMRR PSRR VOUT SR GBW IS Common-Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Slew Rate Gain-Bandwidth Product Supply Current Per Amplifier Channel Seperation DC to 5kHz, VIN =10V f = 1MHz (Note 6) VCM = 15V VS = 10V to 18V RL = 2k LT1057 LT1058 CONDITIONS fO = 10Hz, 1kHz VO = 10V RL = 2k RL = 1k 100 50 10.5 82 80 86 12 8 3 MIN TYP 1.8 300 220 14.3 - 11.5 98 98 102 13 13 5 1.7 130 2.8 MAX UNITS fA/Hz V/mV V dB dB V V/s MHz mA dB The denotes the specifications which apply over the temperature range of 0C TA 70C or -40C TA 85C (LT1057IS8), otherwise specifications are TA = 25C. VS = 15V, VCM = 0V, unless noted. LT1057AC LT1058AC TYP 250 LT1057C LT1058C TYP 330 500 400 400 2.3 4 4 4.5 3 5 20 35 60 100 50 80 84 12 2.8 1.4 1.5 200 96 100 12.8 3.2 SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS LT1057 LT1057IS8 LT1057S8 LT1058 LT1057 H/J8 Package N8 Package LT1057S8 (Note 5) LT1057IS8 (Note 5) LT1058 J Package (Note 5) N Package (Note 5) Warmed Up, TA = 70C LT1057IS8 Warmed Up, TA = 70C LT1057IS8 VO = 10V, RL = 2k VCM = 10.4V VS = 10V to 18V RL = 2k TA = 70C MIN MAX 800 MIN MAX 1400 2300 1900 1800 12 16 16 16 15 22 250 600 350 900 UNITS V V V V V/C V/C V/C V/C V/C V/C pA pA V/mV dB dB V mA mA 300 1.8 3 1200 7 10 Average Temperature Coefficient of Input (Offset Voltage) 2.5 4 18 10 15 150 250 IOS IB AVOL CMRR PSRR VOUT IS lnput Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Supply Current Per Amplifier 50 70 85 87 12 220 98 102 12.8 10578fa 4 LT1057/LT1058 ELECTRICAL CHARACTERISTICS (LT1057/LT1058 SW Package Only.) The denotes specifications which apply over the temperature range of VS = 15V, VCM = 0V, 0C TA 70C (LT1057SW, LT1058SW) or -40C TA 85C (LT1057ISW, LT1058ISW), unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage CONDITIONS LT1057 LT1058S LT1058IS MIN TYP 0.5 0.6 0.7 5 20 35 60 100 MAX 2.5 3.0 4.0 UNITS mV Average Temperature Coefficient of Input Offset Voltage lOS lB AVOL CMRR PSRR VOUT Input Offset Current Input Bias Current Large Signal Volage Gain Common-Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Warmed Up, TA = 70C Warmed Up, TA = 85C Warmed Up, TA = 70C Warmed Up, TA = 85C VO = 10V, RL = 2k VCM = 10.5V VS = 10V to 18V RL = 2k LT1057 LT1058 LT1057 LT1058 LT1057 LT1058 V/C 250 400 400 700 pA pA mV dB dB V 50 40 80 78 84 82 12 200 200 96 96 100 100 12.8 The denotes specifications which apply over the temperature range of - 55C TA 125C, VS = 15V, VCM = 0V, unless otherwise noted. LT1057AM LT1058AM TYP 300 380 2.0 2.5 0.15 0.6 SYMBOL VOS PARAMETER lnput Offset Voltage Average Temperature Coefficient of Input Offset Voltage CONDITIONS LT1057 LT1058 LT1057 LT1058 (Note 5) Warmed Up, TA = 125C Warmed Up, TA = 125C VO = 10V, RL = 2k VCM = 10.4V VS = 10V to 17V RL = 2k TA = 125C MIN MAX 1100 1600 7 10 2 4.5 MIN LT1057M LT1058M TYP 400 550 2.5 3 0.2 0.7 MAX 2000 2500 12 15 3 6 UNITS V V V/C V/C nA nA V/mV dB dB V IOS IB AVOL CMRR PSRR VOUT IS lnput Offset Current Input Bias Current Large-Signal Voltage Gain Common Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing Supply Current Per Amplifier 40 84 86 12 120 97 100 12.7 1.25 1.9 30 80 83 12 110 95 98 12.6 1.3 2.2 mA Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Typical parameters are defined as the 60% yield of distributions of individual amplifiers; (i.e., out of 100 LT1058s or, 100 LT1057s, typically 240 op amps, or 120 for the LT1057, will be better than the indicated specification). Note 3: This parameter is tested on a sample basis only. Note 4: Current noise is calculated from the formula: in = (2qlb)1/2 where q = 1.6 * 10- 19 coulomb. The noise of source resistors up to1G swamps the contribution of current noise. Note 5: This parameter is not 100% tested. Note 6: Gain-bandwidth product is not tested. It is guaranteed by design and by inference from the slew rate measurement. 10578fa 5 LT1057/LT1058 TYPICAL PERFOR A CE CHARACTERISTICS Input Bias and Offset Currents vs Temperature 1000 INPUT BIAS AND OFFSET CURRENT (pA) INPUT BIAS CURRENT, TA = 125C (nA) CHANGE IN OFFSET VOLTAGE (V) 300 VS = 15V VCM = 0V WARMED UP 100 BIAS CURRENT 30 OFFSET CURRENT 10 3 0 25 75 100 50 AMBIENT TEMPERATURE (C) LT1057/1058 * TPC01 Distribution of Offset Voltage Drift with Temperature (H and J Package) 120 VS = 15V 100 112 LT1057H: 102 OP AMPS LT1057J: 130 OP AMPS LT1058J: 136 OP AMPS 368 OP AMPS OFFSET VOLTAGE CHANGE (V) 96 NUMBER OF UNITS 80 60 40 20 2 45 NUMBER OF UNITS 70 32 24 16 4 21 0 3 6 -12 -9 -6 -3 9 0 12 OFFSET VOLTAGE DRIFT WITH TEMPERATURE (V/C) LT1057/1058 * TPC04 Voltage Noise vs Frequency 1000 RMS VOLTAGE NOISE DENSITY (nV/Hz) 70 50 VS = 15V TA = 25C NOISE VOLTAGE (1V/DIV) VOLTAGE GAIN (V/mV) 30 20 1/f CORNER = 28Hz 10 3 10 30 100 300 1000 3000 10000 FREQUENCY (Hz) LT1057/1058 * TPC07 6 UW Input Bias Current Over the Common-Mode Range 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 TA = 25C TA = 125C TA = 70C VS = 15V 160 140 120 100 80 60 40 20 0 -20 0 -5 -10 10 5 COMMON MODE INPUT VOLTAGE (V) 15 Warm-Up Drift 100 VS = 15V TA = 25C 80 INPUT BIAS CURRENT, TA = 25C TO 70C (pA) 60 LT1058 N PACKAGE 40 LT1057 N, LT1058 J PACKAGE LT1057 H PACKAGE LT1057 J PACKAGE 20 125 - 0.2 -15 0 0 1 3 4 2 TIME AFTER POWER ON (MINUTES) 5 LT1057/1058 * TPC02 LT1057/1058 * TPC03 Distribution of Offset Voltage Drift with Temperature (Plastic N Package) 120 100 80 70 60 40 20 9 4 22 60 65 VS = 15V LT1057N: 180 OP AMPS LT1058N: 176 OP AMPS 356 OP AMPS 1 UNIT EACH AT -19, -16, -13 14, 16V/C Long-Term Drift of Representative Units 50 40 30 20 10 0 -10 -20 -30 -40 -50 0 1 3 2 TIME (MONTHS) 4 5 VS = 15V TA = 25C 44 31 27 11 5 3 0 3 6 9 -12 -9 - 6 - 3 0 12 OFFSET VOLTAGE DRIFT WITH TEMPERATURE (V/C) LT1057/1058 * TPC05 LT1057/1058 * TPC06 0.1Hz to 10Hz Noise 1000 VS = 15V TA = 25C 300 Voltage Gain vs Temperature RL = 2k VS = 15V V0 = 10V RL = 1k 100 30 0 2 6 4 TIME (SECONDS) 8 10 10 -75 25 -25 75 TEMPERATURE (C) 125 LT1057/1058 * TPC08 LT1057/1058 * TPC09 10578fa LT1057/LT1058 TYPICAL PERFOR A CE CHARACTERISTICS Large-Signal Response 30 8 SLEW RATE (V/s) SLEW FALL 20 GBW SLEW RISE 10 2 6 4 PEAK-TO-PEAK OUTPUT SWING (V) 5V/DIV AV = +1 CL = 100pF 0.5s/DIV 0 -50 -25 Small-Signal Response 140 120 OVERSHOOT (%) 20mV/DIV GAIN (dB) AV = +1 CL = 100pF 0.2s/DIV Settling Time 10 160 OUTPUT VOLTAGE SWING FROM 0V (V) CHANNEL SEPARATION (dB) 10mV 5 0.5mV 0 FROM LEFT TO RIGHT: SETTLING TIME TO 10mV, 5mV, 2mV, 1mV, 0.5mV 0.5mV 120 LIMITED BY THERMAL INTERACTION AT DC = 132dB RS = 1k LIMITED BY PIN-TO-PIN CAPACITANCE OUTPUT IMPEDANCE () -5 10mV -10 VS = 15V TA = 25C 0 1 2 3 LT1057/1058 * TPC14 SETTLING TIME (s) UW Slew Rate, Gain-Bandwidth Product vs Temperature VS = 15V 10 GAIN BANDWIDTH PRODUCT (MHz) Undistorted Output Swing vs Frequency 30 VS = 15V TA = 25C 24 18 12 6 50 25 75 0 TEMPERATURE (C) 100 125 0 100k 1M FREQUENCY (Hz) 10M LT1057/1058 * TPC11 LT1057/1058 * TPC10 Gain, Phase Shift vs Frequency 100 80 70 Capacitive Load Handling VS = 15V TA = 25C PHASE SHIFT (DEGREES) 100 80 60 PHASE MARGIN = 58 120 60 50 AV = -1 40 AV = +1 30 20 10 AV = 10 140 GAIN PHASE 160 40 20 VS = 15V 0 TA = 25C CL = 10pF -20 1 10 100 180 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) LT1057/1058 * TPC12 0 10 100 1000 CAPACITIVE LOAD (pF) 10000 LT1057/1058 * TPC13 Channel Separation vs Frequency 100 Output Impedance vs Frequency VS = 15V TA = 25C AV = 100 140 RS = 10 10 AV = 10 100 1 AV = 1 0.1 1k 10k 100k FREQUENCY (Hz) 10M LT1057/1058 * TPC16 80 60 VS = 15V TA = 25C VIN = 20VP-P TO 5kHz RL = 2k 1 10 100 1k 10k FREQUENCY (Hz) 100k 1M LT1057/1058 * TPC15 10578fa 7 LT1057/LT1058 TYPICAL PERFOR A CE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 120 100 80 CMRR (dB) VS = 15V TA = 25C COMMON MODE RANGE (V) CMRR, PSRR (dB) 60 40 20 0 10 100 1k 10k 100k FREQUENCY (Hz) LT1057/1058 * TPC17 Power Supply Rejection Ratio vs Frequency 140 SUPPLY CURRENT PER AMPLIFIER (mA) POWER SUPPLY REJECTION RATIO (dB) TA = 25C 120 100 80 60 40 20 0 10 100 100k 10k 1k FREQUENCY (Hz) 1M 10M NEGATIVE SUPPLY POSITIVE SUPPLY SHORT-CIRCUIT CURRENT (mA) LT1057/1058 * TPC20 APPLICATIO S I FOR ATIO The LT1057 may be inserted directly in LF353, LF412, LF442, TL072, TL082 and OP-215 sockets. The LT1058 plugs into LF347, LF444, TL074 and TL084 sockets. Of course, all standard dual and quad bipolar op amps can also be replaced by these devices. High Speed Operation When the feedback around the op amp is resistive (RF) a pole will be created with RF, the source resistance and capacitance (RS, CS), and the amplifier input capacitance (CIN 4pF). In low closed loop gain configurations and 8 U W UW 1M Common Mode Range vs Temperature 15 14 13 12 11 10 -11 -12 -13 -14 10M Common Mode and Power Supply Rejections vs Temperature 120 VS = 10V TO 17V FOR PSRR VS = 15V, VCM = 10.5V FOR CMRR 110 PSRR CMRR 100 VS = 15V -15 50 -50 0 TEMPERATURE (C) 100 LT1057/1058 * TPC18 90 -25 25 75 TEMPERATURE (C) 125 LT1057/1058 * TPC19 Supply Current vs Temperature 3 50 40 30 20 10 0 -10 -20 -30 -40 0 -50 -25 -50 50 25 75 0 TEMPERATURE (C) 100 125 Short-Circuit Current vs Time (One Output Shorted to Ground) VS = 15V TA = -55C TA = 25C TA = 125C TA = 125C TA = 25C TA = -55C 2 VS = 15V VS = 10V 1 2 1 0 3 TIME FROM OUTPUT SHORT TO GROUND (MINUTES) LT1057/1058 * TPC22 LT1057/1058 * TPC21 UU with RS and RF in the kilohm range, this pole can create excess phase shift and even oscillation. A small capacitor (CF) in parallel with RF eliminates this problem. With RS(CS + CIN) = RFCF, the effect of the feedback pole is completely removed. CF RF - CIN RS CS OUTPUT + LT1057/LT1058 * AI01 10578fa LT1057/LT1058 APPLICATIO S I FOR ATIO Settling time is measured in a test circuit which can be found in the LT1055/LT1056 data sheet and in Application Note 10. Achieving Picoampere/Microvolt Performance In order to realize the picoampere/microvolt level accuracy of the LT1057/LT1058, proper care must be exercised. For example, leakage currents in circuitry external to the op amp can significantly degrade performance. High quality insulation should be used (e.g., TeflonTM, Kel-F); cleaning of all insulating surfaces to remove fluxes and other residues will probably be required. Surface coating may be necessary to provide a moisture barrier in high humidity environments. Board leakage can be minimized by encircling the input circuitry with a guard ring operated at a potential close to that of the inputs; in inverting configurations, the guard ring should be tied to ground, in noninverting connections, to the inverting input. Guarding both sides of the printed circuit board is required. Bulk leakage reduction depends on the guard ring width. The LT1057/LT1058 have the lowest offset voltage of any dual and quad JFET input op amps available today. However, the offset voltage and its drift with time and temperature are still not as good as on the best bipolar amplifiers (because the transconductance of FETs is considerably lower than that of bipolar transistors). Conversely, this lower transconductance is the main cause of the significantly faster speed performance of FET input op amps. Teflon is a trademark of DuPont. (A) 16V Sine Wave Input All Photos 5V/Div Vertical Scale, 50s/Div Horizontal Scale 10578fa U Offset voltage also changes somewhat with temperature cycling. The AM grades show a typical 40V hysteresis (50V on the M grades) when cycled over the - 55C to 125C temperature range. Temperature cycling from 0C to 70C has a negligible (less than 20V) hysteresis effect. The offset voltage and drift performance are also affected by packaging. In the plastic N package, the molding compound is in direct contact with the chip, exerting pressure on the surface. While NPN input transistors are largely unaffected by this pressure, JFET device drift is degraded. Consequently for best drift performance, as shown in the Typical Performance Characteristics distribution plots, the J or H packages are recommended. In applications where speed and picoampere bias currents are not necessary, Linear Technology offers the bipolar input, pin compatible LT1013 and LT1014 dual and quad op amps. These devices have significantly better DC specifications than any JFET input device. Phase Reversal Protection Most industry standard JFET input single, dual and quad op amps (e.g., LF156, LF351, LF353, LF411, LF412, OP-15, OP-16, OP-215, TL084) exhibit phase reversal at the output when the negative common mode limit at the input is exceeded (i.e., below - 12V with 15V supplies). The photos below show a 16V sine wave input (A), the response of an LF412A in the unity gain follower mode (B), and the response of the LT1057/LT1058 (C). The phase reversal of photo (B) can cause lock-up in servo systems. The LT1057/LT1058 does not phase-reverse due to a unique phase reversal protection circuit. (B) LF412A Output (C) LT1057/LT1058 Output W UU 9 LT1057/LT1058 TYPICAL APPLICATIO S Low Noise, Wideband, Gain = 100 Amplifier with High Input Impedance 4.3k 470 INPUT 1k INPUT -3dB BANDWIDTH = 400kHz GAIN-BANDWIDTH PRODUCT = 400MHz WIDEBAND NOISE = 13nV/Hz REFERRED TO INPUT LT1057/1058 * A02 COMMON MODE SUPPRESSION - 1/2 LT1057 + LT1057/1058 * A03 10 U - 1/4 LT1058 2.4k 7.5k 500 + 4.3k 470 2.4k - - 1/4 LT1058 1/4 LT1058 OUTPUT + + 4.3k 2.4k 470 - 1/4 LT1058 + -3dB BANDWIDTH = 350kHZ GAIN-BANDWIDTH PRODUCT = 35MHz WIDEBAND NOISE = 13nV/Hz = 7.5nV/Hz REFERRED TO INPUT 3 RMS NOISE DC TO FULL BANDWIDTH = 7V LT1057/1058 * A01 Wideband, High Input Impedance, Gain = 1000 Amplifier 4.7k 1k 4.7k - 1/4 LT1058 - + 1/4 LT1058 1/4 LT1058 + 1/4 LT1058 OUTPUT + - + - 4.7k 1k 1k 100 4.7k Low Distortion, Crystal Stabilized Oscillator 130 CRYSTAL 20kHz NT CUT 100 0.01F - 100k #327 LAMP 1/2 LT1057 + OSCILLATOR 1VRMS OUT 20kHz 0.005% DISTORTION 15pF 10578fa LT1057/LT1058 TYPICAL APPLICATIO S Fast, Precision Bridge Amplifier 10k INPUT SLEW RATE = 14V/s OUTPUT CURRENT TO LOAD = 150mA LOAD CAPACITANCE: UP TO 1F LT1057/1058 * A04 LTC1043 B INPUT 7 8 -5V 12 11 13 1F 16 14 75k* A INPUT - 1/2 LT1057 + 30pF 22k 330k 2N2907 1F * 1% FILM -5V LT1057/1058 * A05 + U - 1/2 LT1057 330pF 10k + 1k - 1/2 LT1057 330pF RLOAD LT1010 LT1010 + Analog Divider 80.6k* 1F 20k 1k 6 LT1004 1.2V 1F LTC1043 5 5V - 1/2 LT1057 OUTPUT = A B 2 0.001 POLYSTYRENE + -5V 10578fa 11 LT1057/LT1058 TYPICAL APPLICATIO S Bipolar Input (AC) V/F Converter 1k -5V LT1004 2.5V 0.1F 18 0.01 POLYSTYRENE 1F INPUT 1V 36.5k* 10k 5V 3 6 LTC1043 2 5 16 15 1M* 1M* - 1/4 LT1058 + -5V - + 1/4 LT1058 INTEGRATOR 0.01F EIN 5V - 100k* 1/4 LT1058 2 + - 5V 6.8k 180pF -15V 4 LTC1043 CURRENT SWITCH 15 18 16 17 -15V 3 2N4393 1/4 LT1058 A DATA OUTPUT = OUT BOUT *VISHAY S-102 RESISTOR 95k* 10k 12 + - U + 1/4 LT1058 - 1/4 LT1058 2N3906 1M* 10k - + 1M* 22k 10k 0.1F DATA OUTPUT 0kHz TO 1kHz 150pF SIGN BIT *1% FILM MATCH 1M RESISTORS TO 0.05% LT1057/1058 * A06 12-Bit A/D Converter 10k 0.001F CLOCK BOUT 10k 2k 4 3 7 10k 10k - + 1/4 LT1058 FLIP-FLOP 15V 14 1 74C74 5 6 + 68pF 10k 15V 1/4 LT1058 AOUT - 10k OUTPUT GATE 10k 2N3906 820 -15V LEVEL SHIFT 1k OUT LT1021 IN 10V GND NC -15V LT1057/1058 * A07 10578fa LT1057/LT1058 TYPICAL APPLICATIO S Instrumentation Amplifier with Shield Driver 3 GUARD + INPUT - GUARD 13 12 6 Q4 5 - IP 1/2 LT1057 + 0.033F LT1021-10V 10k* 15V IN OUT 10k* 14 = HP-5082-4204 PIN PHOTODIODE. Q1-Q5 = CA3096. CONNECT SUBSTRATE OF CA3096 ARRAY TO Q4's EMITTER. *1% RESISTOR 100dB RANGE LOGARITHMIC PHOTODIODE AMPLIFIER U 2 8 Q1 + 1/4 LT1058 1 1k RF 9.1k 10k - RG 1k 15V 5 + 1/4 LT1058 10 + - 4 7 OUTPUT - 9 RG 1k 6 1/4 LT1058 11 -15V - 1/4 LT1058 14 RF 9.1k 1k 10k + GAIN = 10(1+RF/RG) 100 IB = 5pA RIN = 1012 BW = 350kHz LT1057/1058 * A08 100dB Range Logarithmic Photodiode Amplifier 4 10 2k 11 Q5 12 500pF 50k* 1M 1M FULL-SCALE 750k* TRIM 50k DARK TRIM 0.01F - 1/2 LT1057 EOUT + - LM301A 3k 1 2 Q2 3 + 2k 33 15 7 Q3 13 9 15V 8 LIGHT (900M) 1MW 100W 10W 1W 100nW 10nW RESPONSE DATA DIODE CURRENT 350A 35A 3.5A 350nA 35nA 3.5nA CIRCUIT OUTPUT 10.0V 7.85V 5.70V 3.55V 1.40V -0.75V LT1057/1058 * A09 10578fa 13 LT1057/LT1058 PACKAGE DESCRIPTIO U H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) .335 - .370 (8.509 - 9.398) DIA .305 - .335 (7.747 - 8.509) .040 (1.016) MAX .050 (1.270) MAX GAUGE PLANE .165 - .185 (4.191 - 4.699) REFERENCE PLANE .500 - .750 (12.700 - 19.050) .200 (5.080) TYP SEATING PLANE .010 - .045* (0.254 - 1.143) .016 - .021** (0.406 - 0.533) 45TYP .028 - .034 (0.711 - 0.864) .027 - .045 (0.686 - 1.143) PIN 1 .110 - .160 (2.794 - 4.064) INSULATING STANDOFF *LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND THE SEATING PLANE .016 - .024 **FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS (0.406 - 0.610) H8(TO-5) 0.200 PCD 0801 J8 Package 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) .405 (10.287) MAX 8 7 6 5 .300 BSC (7.62 BSC) CORNER LEADS OPTION (4 PLCS) .200 (5.080) MAX .015 - .060 (0.381 - 1.524) .005 (0.127) MIN .008 - .018 (0.203 - 0.457) 0 - 15 .023 - .045 (0.584 - 1.143) HALF LEAD OPTION .045 - .068 (1.143 - 1.650) FULL LEAD OPTION .025 (0.635) RAD TYP 1 2 3 .220 - .310 (5.588 - 7.874) 4 .045 - .065 (1.143 - 1.651) .014 - .026 (0.360 - 0.660) .100 (2.54) BSC NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .125 3.175 MIN J8 0801 J Package 14-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) .300 BSC (7.62 BSC) .200 (5.080) MAX .015 - .060 (0.381 - 1.524) .005 (0.127) MIN .785 (19.939) MAX 14 13 12 11 10 9 8 .008 - .018 (0.203 - 0.457) 0 - 15 .025 (0.635) .125 RAD TYP (3.175) MIN J14 0801 .220 - .310 (5.588 - 7.874) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .045 - .065 (1.143 - 1.651) .014 - .026 (0.360 - 0.660) .100 (2.54) BSC 1 2 3 4 5 6 7 OBSOLETE PACKAGES 10578fa 14 LT1057/LT1058 PACKAGE DESCRIPTIO .300 - .325 (7.620 - 8.255) .008 - .015 (0.203 - 0.381) +.035 .325 -.015 +0.889 8.255 -0.381 ( INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) NOTE: 1. DIMENSIONS ARE .300 - .325 (7.620 - 8.255) .008 - .015 (0.203 - 0.381) +.035 .325 -.015 .005 (0.125) .100 MIN (2.54) BSC ( +0.889 8.255 -0.381 ) INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) NOTE: 1. DIMENSIONS ARE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .400* (10.160) MAX 8 7 6 5 .255 .015* (6.477 0.381) 1 2 3 4 .130 .005 (3.302 0.127) .045 - .065 (1.143 - 1.651) .065 (1.651) TYP .120 (3.048) .020 MIN (0.508) MIN .018 .003 (0.457 0.076) N8 1002 ) .100 (2.54) BSC N Package 14-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .770* (19.558) MAX 14 13 12 11 10 9 8 .255 .015* (6.477 0.381) 1 .130 .005 (3.302 0.127) .020 (0.508) MIN 2 3 4 5 6 7 .045 - .065 (1.143 - 1.651) .065 (1.651) TYP .120 (3.048) MIN .018 .003 (0.457 0.076) N14 1002 10578fa 15 LT1057/LT1058 PACKAGE DESCRIPTIO .050 BSC 8 N N .245 MIN .160 .005 .228 - .244 (5.791 - 6.197) 1 2 3 N/2 .030 .005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 - .020 x 45 (0.254 - 0.508) .008 - .010 (0.203 - 0.254) 0- 8 TYP NOTE: 1. DIMENSIONS IN INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) .030 .005 TYP N .420 MIN 1 2 3 RECOMMENDED SOLDER PAD LAYOUT 1 .291 - .299 (7.391 - 7.595) NOTE 4 .010 - .029 x 45 (0.254 - 0.737) 0 - 8 TYP .005 (0.127) RAD MIN .009 - .013 (0.229 - 0.330) NOTE 3 .016 - .050 (0.406 - 1.270) NOTE: 1. DIMENSIONS IN INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS 4. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) 16 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 U S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .045 .005 .189 - .197 (4.801 - 5.004) NOTE 3 7 6 5 .150 - .157 (3.810 - 3.988) NOTE 3 N/2 1 2 3 4 .053 - .069 (1.346 - 1.752) .004 - .010 (0.101 - 0.254) .016 - .050 (0.406 - 1.270) .014 - .019 (0.355 - 0.483) TYP .050 (1.270) BSC SO8 0502 SW Package 16-Lead Plastic Small Outline (Wide .300 Inch) (Reference LTC DWG # 05-08-1620) .050 BSC .045 .005 .398 - .413 (10.109 - 10.490) NOTE 4 16 15 14 13 12 11 10 9 N .325 .005 NOTE 3 .394 - .419 (10.007 - 10.643) N/2 N/2 2 3 4 5 6 7 8 .093 - .104 (2.362 - 2.642) .037 - .045 (0.940 - 1.143) .050 (1.270) BSC .004 - .012 (0.102 - 0.305) .014 - .019 (0.356 - 0.482) TYP S16 (WIDE) 0502 10578fa LW/TP 1102 1K REV A * PRINTED IN USA www.linear.com LINEAR TECHNOLOGY CORPORATION 1989 |
Price & Availability of LT1057A
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |