View EL151907_1236345.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

(R)
EL1519
Data Sheet April 10, 2007 FN7017.2
Medium Power Differential Line Driver
The EL1519 is a dual operational amplifier designed for customer premise line driving in DMT ADSL solutions. This device features a high drive capability of 250mA while consuming only 7.1mA of supply current per amplifier and operating from a single 5V to 12V supply. This driver achieves a typical distortion of less than -85dBc, at 150kHz into a 25 load. The EL1519 is available in the industry standard 8 Ld SO. This device is optimized to use low feedback resistor values to minimize noise in ADSL systems. The EL1519 is ideal for ADSL, SDSL, HDSL2 and VDSL line driving applications.
Features
* Drives up to 250mA from a +12V supply * 20VP-P differential output drive into 100 * -85dBc typical driver output distortion at full output at 150kHz * Low quiescent current of 7.5mA per amplifier * Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
* ADSL G.lite CO line driving * ADSL full rate CPE line driving * G.SHDSL, HDSL2 line driver
Ordering Information
PART NUMBER EL1519CS EL1519CS-T7 EL1519CS-T13 EL1519CSZ (See Note) EL1519CSZ-T7 (See Note) EL1519CSZ-T13 (See Note) PART MARKING 1519CS 1519CS 1519CS 1519CSZ 1519CSZ 1519CSZ TAPE & REEL PACKAGE 7" 13" 7" 13" 8 Ld SO 8 Ld SO 8 Ld SO 8 Ld SO (Pb-Free) 8 Ld SO (Pb-Free) 8 Ld SO (Pb-Free) PKG. DWG. # MDP0027 MDP0027 MDP0027 MDP0027
* Video distribution amplifier * Video twisted-pair line driver
Pinout
EL1519 (8 LD SO) TOP VIEW
OUTA 1 8 VS
+
MDP0027
INA- 2 7 OUTB 6 INB+
MDP0027
INA+ 3 GND 4
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
5 INB+
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2004, 2007. All Rights Reserved. All other trademarks mentioned are the property of their respective owners.
EL1519
Absolute Maximum Ratings (TA = +25C)
VS+ Voltage to Ground . . . . . . . . . . . . . . . . . . . . . . -0.3V to +14.6V VIN+ Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND to VS+ Current into any Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8mA Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . 75mA
Thermal Information
Operating Temperature Range . . . . . . . . . . . . . . . . .-40C to +85C Storage Temperature Range . . . . . . . . . . . . . . . . . .-60C to +150C Operating Junction Temperature . . . . . . . . . . . . . . .-40C to +150C Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
PARAMETER AC PERFORMANCE BW HD dG d SR -3dB Bandwidth
VS = 12V, RF = 750, RL = 100 connected to mid supply, TA = +25C. Unless otherwise specified. CONDITIONS MIN TYP MAX UNIT
DESCRIPTION
AV = +4 f = 150kHz, VO =16Vp-p, RL=25 AV = +2, RL = 37.5 AV = +2, RL = 37.5 VOUT from -3V to +3V 275
70 -85 0.15 0.1 350
MHz dBc % V/S
Total Harmonic Distortion Differential Gain Differential Phase Slewrate
DC PERFORMANCE VOS VOS ROL Offset Voltage VOS Mismatch Transimpedance VOUT from -4.5V to +4.5V -20 -10 0.7 1.4 20 10 2.5 mV mV M
INPUT CHARACTERISTICS IB+ IBeN iN Non-Inverting Input Bias Current Inverting Input Bias Current Input Noise Voltage -Input Noise Current -3 -30 2.7 18 3 30 A A nV Hz pA/ Hz
OUTPUT CHARACTERISTICS VOUT Loaded Output Swing (single ended) RL = 100 to GND, VS = 6V RL = 25 to GND, VS = 6V IOUT SUPPLY VS IS Supply Voltage Supply Current Single Supply All Outputs at Mid Supply 5 14.2 12 18 V mA Output Current RL = 0 4.8 4.4 5 4.7 450 V V mA
2
FN7017.2 April 10, 2007
EL1519 Typical Performance Curves
28 24 GAIN (dB) 20 16 12 8 100K AV=10 VS=6V RL=100 RF=750 22 18 GAIN (dB) 14 10 6 2 100K RF=1k AV=5 VS=6V RL=100 RF=750 RF=500
RF=500
RR=1k F F=1k
1M
10M
100M
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 1. DIFFERENTIAL FREQUENCY RESPONSE vs RF
FIGURE 2. DIFFERENTIAL FREQUENCY RESPONSE vs RF
22 18 GAIN (dB) 14 CL=0pF 10 6 2 100K AV=5 VS=6V RL=100 RF=750 CL=22pF CL=10pF BW (MHz)
55 51 47 43 39 35 2.5 AV=5 RF=750 RL=100
1M
10M
100M
3
3.5
4
4.5
5
5.5
6
FREQUENCY (Hz)
VS (V)
FIGURE 3. DIFFERENTIAL FREQUENCY RESPONSE vs CL
FIGURE 4. DIFFERENTIAL BANDWIDTH vs SUPPLY VOLTAGE
-45 VS=2.5V AV=5 RF=750 -55 RL=100 f=1MHz HD (dB) -65 HD3 -75 HD2
4 3 PEAKING (dB) 2 1 0 -1 -2 2.5 AV=5 RF=750 RL=100
-85 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 VOP-P (V)
3
3.5
4
4.5
5
5.5
6
VS (V)
FIGURE 5. DIFFERENTIAL HARMONIC DISTORTION vs DIFFERENTIAL OUTPUT VOLTAGE
FIGURE 6. DIFFERENTIAL PEAKING vs SUPPLY VOLTAGE
3
FN7017.2 April 10, 2007
EL1519 Typical Performance Curves
-45 -50 -55 -60 HD (dB) -65 -70 -75 -80 -85 -90 1 3 5 7 9 11 13 15 17 19 VOP-P (V) HD2 HD3 VS=6V AV=5 RF=750 RL=100 f=1MHz -45 -50 -55 THD (dB) -60 -65 -70 -75 -80 -85 -90 1 3 5 7 9 11 13 15 17 19 21 VOP-P (V) VS=6V VS=2.5V AV=5 RF=750 RL=100 f=150kHz
FIGURE 7. DIFFERENTIAL HARMONIC DISTORTION vs DIFFERENTIAL OUTPUT VOLTAGE
FIGURE 8. DIFFERENTIAL TOTAL HARMONIC DISTORTION vs DIFFERENTIAL OUTPUT VOLTAGE
-45 -50 -55 THD (dB) -60 -65 -70 -75 -80 1 3 5 7 9 11 13 15 17 19 VOP-P (V) VS=2.5V VS=6V AV=5V RF=750 RL=100 f=1MHz
-10 -30 ISOLATION (dB) -50 BA -70 AB -90 -110 10K
100K
1M FREQUENCY (Hz)
10M
100M
FIGURE 9. DIFFERENTIAL TOTAL HARMONIC DISTORTION vs DIFFERENTIAL OUTPUT VOLTAGE
FIGURE 10. CHANNEL ISOLATION vs FREQUENCY
100 VOLTAGE NOISE (nV/Hz), CURRENT NOISE (pA/Hz)
30 10 IBPSRR (dB) -10 -30 PSRR-50 IB+ -70 10K PSRR+
10 EN
1 10
100
1K
10K
100K
1M
10M
100M
100K
1M FREQUENCY (Hz)
10M
100M
FREQUENCY (Hz)
FIGURE 11. VOLTAGE AND CURRENT NOISE vs FREQUENCY
FIGURE 12. POWER SUPPLY REJECTION vs FREQUENCY
4
FN7017.2 April 10, 2007
EL1519 Typical Performance Curves
100 OUTPUT IMPEDANCE () 10 1 0.1 0.01 0.001 10K VS=6V AV=1 RF=1.5k MAGNITUDE () 10M 1M 100K 10K 1K -250 100 100 -300 100M GAIN PHASE 50 0 -50 -100 -150 -200
100K
1M FREQUENCY (Hz)
10M
100M
1K
10K
100K
1M
10M
FREQUENCY (Hz)
FIGURE 13. OUTPUT IMPEDANCE vs FREQUENCY
FIGURE 14. TRANSIMEDANCE (ROL) vs FREQUENCY
0.06 PHASE () DIFFERENTIAL GAIN (%), DIFFERENTIAL PHASE () 0.05 0.04 GAIN 0.03 0.02 0.01 0 0 1 2 3 4 5 NUMBER OF 150 LOADS PHASE SUPPLY CURRENT (mA)
14.5
14
13.5
13
12.5 -50
-25
0
25
50
75
100
125
150
TEMPERATURE (C)
FIGURE 15. DIFFERENTIAL GAIN AND DIFFERENTIAL PHASE
FIGURE 16. SUPPY CURRENT vs TEMPERATURE
10 INPUT BIAS CURRENT (A) 8 6 4 2 0 -2 -4 -6 -8 -10 -50 -25 0 25 50 75 100 125 150 IB+ IBOUTPUT VOLTAGE (V)
5.2 5.15 5.1 50.5 5 4.95 4.9 4.85 4.8 -50 -25 0 25 50 75 100 125 150 RL=100
TEMPERATURE (C)
TEMPERATURE (C)
FIGURE 17. INPUT BIAS CURRENT vs TEMPERATURE
FIGURE 18. OUTPUT VOLTAGE vs TEMPERATURE
5
FN7017.2 April 10, 2007
EL1519 Typical Performance Curves
520 510 SLEW RATE (V/s) 500 IS (mA) -25 0 25 50 75 100 125 150 490 480 470 460 450 440 -50 16 14 12 10 8 6 4 2 0 0 1 2 3 4 5 6 7 TEMPERATURE (C) VS (V)
FIGURE 19. SLEW RATE vs TEMPERATURE
FIGURE 20. SUPPLY CURRENT vs SUPPLY VOLTAGE
7 6 OFFSET VOLTAGE (mV) 5 4 3 2 1 0 -1 -2 -3 -50 -25 0 25 50 75 100 125 150 TRANSIMPEDANCE (M)
3 2.5 2 1.5 1 0.5 0 -50
-25
0
25
50
75
100
125
150
TEMPERATURE (C)
TEMPERATURE (C)
FIGURE 21. OFFSET VOLTAGE vs TEMPERATURE
FIGURE 22. TRANSIMPEDANCE vs TEMPERATURE
22 AV=5 VS=6V RL=100 RF=750 39pF 30pF 20 18 22pF 10pF 0pF 16 14 AV=10 VS=6V RL=100 1M (Hz) 10M 100M RF=1k RF=500
RF=750
100K
1M (Hz)
10M
100M
12 100K
FIGURE 23. DIFFERENTIAL FREQUENCY RESPONSE vs CL
FIGURE 24. DIFFERENTIAL FREQUENCY RESPONSE vs RF
6
FN7017.2 April 10, 2007
EL1519 Typical Performance Curves
1.4 POWER DISSIPATION (W) RF=500 1.2 1 0.8 0.6 0.4 0.2 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (C) 781mW
J SO 60 8
A =1
JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD
AV=5 VS=6V RL=100
RF=750 RF=1k
C /W
100K
1M (Hz)
10M
100M
FIGURE 25. DIFFERENTIAL FREQUENCY RESPONSE vs RF
FIGURE 26. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY (4-LAYER) TEST BOARD 3.5 POWER DISSIPATION (W) 3 2.5 2 1.5 1 0.5 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (C) 1.136W
SO8 110 C /W
FIGURE 27. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE
Applications Information
Product Description
The EL1519 is a dual operational amplifier designed for customer premise line driving in DMT ADSL solutions. It is a dual current mode feedback amplifier with low distortion while drawing moderately low supply current. It is built using Elantec's proprietary complimentary bipolar process and is offered in industry standard pin-outs. Due to the current feedback architecture, the EL1519 closed-loop 3dB bandwidth is dependent on the value of the feedback resistor. First the desired bandwidth is selected by choosing the feedback resistor, RF, and then the gain is set by picking the gain resistor, RG. The curves at the beginning of the Typical Performance Curves section show the effect of varying both RF and RG. The 3dB bandwidth is somewhat dependent on the power supply voltage.
Power Supply Bypassing and Printed Circuit Board Layout
As with any high frequency device, good printed circuit board layout is necessary for optimum performance. Ground plane construction is highly recommended. Lead lengths should be as short as possible, below 1/4". The power supply pins must be well bypassed to reduce the risk of oscillation. A 1.0F tantalum capacitor in parallel with a 0.01F ceramic capacitor is adequate for each supply pin. For good AC performance, parasitic capacitances should be kept to a minimum, especially at the inverting input. This implies keeping the ground plane away from this pin. Carbon resistors are acceptable, while use of wire-wound resistors should not be used because of their parasitic inductance. Similarly, capacitors should be low inductance for best performance.
7
FN7017.2 April 10, 2007
EL1519
Capacitance at the Inverting Input
Due to the topology of the current feedback amplifier, stray capacitance at the inverting input will affect the AC and transient performance of the EL1519 when operating in the non-inverting configuration. In the inverting gain mode, added capacitance at the inverting input has little effect since this point is at a virtual ground and stray capacitance is therefore not "seen" by the amplifier.
Supply Voltage Range
The EL1519 has been designed to operate with supply voltages from 2.5V to 6V. Optimum bandwidth, slew rate, and video characteristics are obtained at higher supply voltages. However, at 2.5V supplies, the 3dB bandwidth at AV = +2 is a respectable 40MHz.
Single Supply Operation
If a single supply is desired, values from +5V to +12V can be used as long as the input common mode range is not exceeded. When using a single supply, be sure to either 1) DC bias the inputs at an appropriate common mode voltage and AC couple the signal, or 2) ensure the driving signal is within the common mode range of the EL1519.
Feedback Resistor Values
The EL1519 has been designed and specified with RF=750 for AV = +5. This value of feedback resistor yields extremely flat frequency response with little to no peaking out to 50MHz. As is the case with all current feedback amplifiers, wider bandwidth, at the expense of slight peaking, can be obtained by reducing the value of the feedback resistor. Inversely, larger values of feedback resistor will cause rolloff to occur at a lower frequency. See the curves in the Typical Performance Curves section which show 3dB bandwidth and peaking vs. frequency for various feedback resistors and various supply voltages.
ADSL CPE Applications
The EL1519 is designed as a line driver for ADSL CPE modems. It is capable of outputting 250mA of output current with a typical supply voltage headroom of 1.3V. It can achieve -85dBc of distortion at low 7.1mA of supply current per amplifier. The average line power requirement for the ADSL CPE application is 13dBm (20mW) into a 100 line. The average line voltage is 1.41VRMS. The ADSL DMT peak to average ratio (crest factor) of 5.3 implies peak voltage of 7.5V into the line. Using a differential drive configuration and transformer coupling with standard back termination, a transformer ratio of 1:2 is selected. The circuit configuration is as shown below.
+ -
Bandwidth vs Temperature
Whereas many amplifier's supply current and consequently 3dB bandwidth drop off at high temperature, the EL1519 was designed to have little supply current variations with temperature. An immediate benefit from this is that the 3dB bandwidth does not drop off drastically with temperature.
12.5 TX1 100
1K AFE 338
+ -
1:2 12.5
1K
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation's quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements 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 Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com 8
FN7017.2 April 10, 2007
EL1519 Small Outline Package Family (SO)
A D N (N/2)+1 h X 45
A E E1 PIN #1 I.D. MARK c SEE DETAIL "X"
1 B
(N/2) L1
0.010 M C A B e C H A2 GAUGE PLANE A1 0.004 C 0.010 M C A B b DETAIL X
SEATING PLANE L 4 4
0.010
MDP0027
SMALL OUTLINE PACKAGE FAMILY (SO) INCHES SYMBOL A A1 A2 b c D E E1 e L L1 h N NOTES: 1. Plastic or metal protrusions of 0.006" maximum per side are not included. 2. Plastic interlead protrusions of 0.010" maximum per side are not included. 3. Dimensions "D" and "E1" are measured at Datum Plane "H". 4. Dimensioning and tolerancing per ASME Y14.5M-1994 SO-8 0.068 0.006 0.057 0.017 0.009 0.193 0.236 0.154 0.050 0.025 0.041 0.013 8 SO-14 0.068 0.006 0.057 0.017 0.009 0.341 0.236 0.154 0.050 0.025 0.041 0.013 14 SO16 (0.150") 0.068 0.006 0.057 0.017 0.009 0.390 0.236 0.154 0.050 0.025 0.041 0.013 16 SO16 (0.300") (SOL-16) 0.104 0.007 0.092 0.017 0.011 0.406 0.406 0.295 0.050 0.030 0.056 0.020 16 SO20 (SOL-20) 0.104 0.007 0.092 0.017 0.011 0.504 0.406 0.295 0.050 0.030 0.056 0.020 20 SO24 (SOL-24) 0.104 0.007 0.092 0.017 0.011 0.606 0.406 0.295 0.050 0.030 0.056 0.020 24 SO28 (SOL-28) 0.104 0.007 0.092 0.017 0.011 0.704 0.406 0.295 0.050 0.030 0.056 0.020 28 TOLERANCE MAX 0.003 0.002 0.003 0.001 0.004 0.008 0.004 Basic 0.009 Basic Reference Reference NOTES 1, 3 2, 3 Rev. M 2/07
9
FN7017.2 April 10, 2007

▲Up To Search▲

Price & Availability of EL151907

	To Download EL151907 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .