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| (R) TSH31 280MHz BANDWIDTH MOS INPUT SINGLE OPERATIONAL AMPLIFIER .VERYLOWI .GAI .GAI .SLEWRATE:300V/ .STANDARDPI NPUT CURRENT : 2pA typ N BANDWIDTH PRODUCT : 280MHz N OF 2 STABILITY s N OUT N DIP8 (Plastic Package) D SO8 (Plastic Micropackage) DESCRIPTION The TSH31 is a low cost wide bandwidth single operational amplifier featuring extremely low input current of 2pAtyp. Other features as high slew rate, fast settling time and high linearity make it suitable for many applications requiring speed and very high input impedance as photo cell amplifier, Fet probe, high speed precision integrator, sample and hold circuit... PIN CONNECTIONS (top view) ORDER CODES TSH31-01.TBL Part Number TSH31I Temperature Range -40 C, 125 C o o Package N * D * Offset Null 1 Inve rting Input Non-inverting Input VCC 1 2 3 4 8 7 6 5 Offse t Null 2 VCC+ Output N.C. June 1998 1/6 TSH31-01.EPS TSH31 SCHEMATIC DIAGRAM 7 VCC + noninverting input 3 Inte rna l V ref 6 output Cc 2 inverting input 1 Offs e t N1 8 Offs e t N2 4 VCC- INPUT OFFSET VOLTAGE NULL CIRCUIT TS H31 N1 N2 100k VCC ABSOLUTE MAXIMUM RATINGS Symbol VCC Vid Vi Iin Toper Supply Voltage Differential Input Voltage Input Voltage Range Current On Offset Null Pins Operating Free-Air Temperature Range TSH31C TSH31I Parameter Value 7 5 5 20 0oC +70 -40oC +125 Unit V V V mA oC TSH31-02.TBL TSH31-03.TBL OPERATING CONDITIONS Symbol VCC Vic Supply Voltage Common Mode Input Voltage Range Parameter Value 3 to 6 VCC to VCC+ -3 - TSH31-03.EPS Unit V V 2/6 TSH31-02.EPS TSH31 ELECTRICAL CHARACTERISTICS VCC = 5V, Tamb = 25oC (unless otherwise specified) Symbol Vio DV io Iib Iio ICC Avd Vicm CMR SVR Vo Io GBP SR en m Parameter Input Offset Voltage Input Offset Voltage Drift Tmin Tamb Tmax Input Bias Current Input Offset Current Supply Current, no load VCC = 5V Large Signal Voltage Gain RL= 100 Vo = 2.5V Input Common Mode Voltage Range Common Mode Rejection Ratio Vic = Vicm min. Supply Voltage Rejection Ratio VCC = 5V to 3V Output Voltage RL = 100 Output Short Circuit Current Vid = 1V, Vo = 0V Gain Bandwidth Product AVCL = 100, R L = 100, f = 7.5MHz Slew Rate Vin = 2V, AVCL = 1, RL = 100 Equivalent Input Voltage Noise Phase Margin AVM = 1, RL = 100, CL = 15pF f = 1MHz Min. Typ. 3 20 2 2 20 200 -5 to +2 55 45 2.5 800 -5.5 to +2.5 95 65 +3.5 -3.7 70 280 V/s 300 TSH31-04.TBL Max. 15 Unit mV o V/ C pA pA mA V/V V dB dB V mA MHz 300 200 40 20 40 nV Hz Degrees 3/6 TSH31 EVALUATION CIRCUIT +5V 10F 50 10nF Input 1k 10nF 50 Output -5V 10F 1k TSH31-04.EPS CF PRINTED CIRCUIT LAYOUT As for any high frequency device, a few rules must be observed when designing the PCB to get the best performances from this high speed op amp. From the most to the least important points : * Each power supply lead has to be bypassed to ground with a 10nF ceramic capacitor very close to the device and a 10F tantalum capacitor. * To provide low inductance and low resistance common return, use a ground plane or common point return for power and signal. * All leads must be wide and as short as possible especially for op amp inputs. This is in order to decrease parasitic capacitance and * * * inductance. Use small resistor values to decrease time constant with parasitic capacitance. Choose component sizes as small as possible (SMD). On output, decrease capacitor load so as to avoid circuit stability being degraded which may cause oscillation. One can also add a serial resistor in order to minimise its influence. One can add in parallel with feedback resistor a few pF ceramic capacitor CF adjusted to optimize the settling time. * 4/6 TSH31 PACKAGE MECHANICAL DATA 8 PINS - PLASTIC DIP Dimensions A a1 B b b1 D E e e3 e4 F i L Z Min. 0.51 1.15 0.356 0.204 7.95 Millimeters Typ. 3.32 Max. Min. 0.020 0.045 0.014 0.008 0.313 Inches Typ. 0.131 Max. 1.65 0.55 0.304 10.92 9.75 2.54 7.62 7.62 6.6 5.08 3.81 1.52 0.065 0.022 0.012 0.430 0.384 0.100 0.300 0.300 0260 0.200 0.150 0.060 5/6 DIP8.TBL 3.18 0.125 PM-DIP8.EPS TSH31 PACKAGE MECHANICAL DATA 8 PINS - PLASTIC MICROPACKAGE (SO) Dimensions A a1 a2 a3 b b1 C c1 D E e e3 F L M S Min. 0.1 0.65 0.35 0.19 0.25 4.8 5.8 Millimeters Typ. Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 45 (typ.) 5.0 6.2 o Min. 0.004 0.026 0.014 0.007 0.010 0.189 0.228 Inches Typ. Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.197 0.244 1.27 3.81 3.8 0.4 4.0 1.27 0.6 8 (max.) o 0.050 0.150 0.150 0.016 0.157 0.050 0.024 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publ ication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a trademark of STMicroelectronics (c) 1998 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. ORDER CODE : 6/6 SO8.TBL PM-SO8.EPS |
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