EL5164, EL5165, EL5364 ® Data Sheet June 22, 2004 600MHz Current Feedback Amplifiers with Enable The EL5164, EL5165, and EL5364 are current feedback amplifiers with a very high bandwidth of 600MHz. This makes these amplifiers ideal for today’s high speed video and monitor applications. With a supply current of just 5mA and the ability to run from a single supply voltage from 5V to 12V, the amplifiers are also ideal for hand held, portable or battery-powered equipment. The EL5164 also incorporates an enable and disable function to reduce the supply current to 100µA typical per amplifier. Allowing the CE pin to float or applying a low logic level will enable the amplifier. The EL5165 is offered in the 5-pin SOT-23 package, EL5164 is available in the 6-pin SOT-23 and the industry-standard 8pin SO packages, and the EL5364 in a 16-pin SO and 16-pin QSOP packages. All operate over the industrial temperature range of -40°C to +85°C. PACKAGE TAPE & REEL EL5164IS 8-Pin SO - MDP0027 EL5164IS-T7 8-Pin SO 7” MDP0027 PKG. DWG. # EL5164IS-T13 8-Pin SO 13” MDP0027 EL5164IW-T7 6-Pin SOT-23 7” (3K pcs) MDP0038 EL5164IW-T7A 6-Pin SOT-23 7” (250 pcs) MDP0038 EL5165IW-T7 5-Pin SOT-23 7” (3K pcs) MDP0038 EL5165IW-T7A 5-Pin SOT-23 7” (250 pcs) MDP0038 EL5165IC-T7 5-Pin SC-70 7” (3K pcs) P5.049 EL5165IC-T7A 5-Pin SC-70 7” (250 pcs) P5.049 EL5364IS 16-Pin SO (0.150”) - MDP0027 EL5364IS-T7 16-Pin SO (0.150”) 7” MDP0027 EL5364IS-T13 16-Pin SO (0.150”) 13” MDP0027 16-Pin QSOP - MDP0040 MDP0040 EL5364IU Features • 600MHz -3dB bandwidth • 4700V/µs slew rate • 5mA supply current • Single and dual supply operation, from 5V to 12V supply span • Fast enable/disable (EL5164 & EL5364 only) • Available in SOT-23 packages • Dual (EL5264 & EL5265) and triple (EL5362 & EL5363) also available • High speed, 1GHz product available (EL5166 & EL5167) • 300MHz product available (EL5162 family) • Pb-free available Applications • Video amplifiers • Cable drivers • RGB amplifiers Ordering Information PART NUMBER FN7389.3 EL5364IU-T7 16-Pin QSOP 7” EL5364IU-T13 16-Pin QSOP 13” MDP0040 EL5364IUZ (See Note) 16-Pin QSOP (Pb-free) - MDP0040 EL5364IUZ-T7 (See Note) 16-Pin QSOP (Pb-free) 7” MDP0040 EL5364IUZT13 (See Note) 16-Pin QSOP (Pb-free) 13” MDP0040 • Test equipment • Instrumentation • Current to voltage converters NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which is 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-020B. 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2002-2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc. All other trademarks mentioned are the property of their respective owners. EL5164, EL5165, EL5364 Pinouts EL5364 (16-PIN SO, QSOP) TOP VIEW EL5164 (8-PIN SO) TOP VIEW NC 1 IN- 2 IN+ 3 8 CE + VS- 4 INA+ 1 7 VS+ CEA 2 6 OUT VS- 3 5 NC CEB 4 16 INA+ 14 VS+ + - INB+ 5 EL5165 (5-PIN SOT-23, SC-70) TOP VIEW OUT 1 VS- 2 5 VS+ CEC 7 12 INB11 NC + - 10 OUTC INC+ 8 9 INC- EL5164 (6-PIN SOT-23) TOP VIEW 4 INOUT 1 VS- 2 IN+ 3 2 13 OUTB NC 6 + - IN+ 3 15 OUTA 6 VS+ + - 5 CE 4 IN- EL5164, EL5165, EL5364 Absolute Maximum Ratings (TA = 25°C) Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . 13.2V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 50mA Pin Voltages . . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.5V to VS+ +0.5V Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125°C Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C 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 VS+ = +5V, VS- = -5V, RF = 750Ω for AV = 1, RF = 375Ω for AV = 2, RL = 150Ω, VENABLE = VS+ - 1V, TA = 25°C unless otherwise specified. PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT AC PERFORMANCE BW -3dB Bandwidth AV = +1, RL = 500Ω, RF = 510Ω 600 MHz AV = +2, RL = 150Ω, RF = 412Ω 450 MHz 50 MHz BW1 0.1dB Bandwidth AV = +2, RL = 150Ω, RF = 412Ω SR Slew Rate VOUT = -3V to +3V, AV = +2, RL = 100Ω (EL5164, EL5165) 3500 4700 7000 V/µs VOUT = -3V to +3V, AV = +2, RL = 100Ω (EL5364) 3000 4200 6000 V/µs tS 0.1% Settling Time VOUT = -2.5V to +2.5V, AV = +2, RF = RG = 1kΩ 15 ns eN Input Voltage Noise f = 1MHz 2.1 nV/√Hz iN- IN- Input Current Noise f = 1MHz 13 pA/√Hz iN+ IN+ Input Current Noise f = 1MHz 13 pA/√Hz HD2 5MHz, 2.5VP-P -81 dBc HD3 5MHz, 2.5VP-P -74 dBc dG Differential Gain Error (Note 1) AV = +2 0.01 % dP Differential Phase Error (Note 1) AV = +2 0.01 ° DC PERFORMANCE VOS Offset Voltage TCVOS Input Offset Voltage Temperature Coefficient ROL Transimpedance -5 Measured from TMIN to TMAX 1.5 +5 mV 6 µV/°C 1.1 3 MΩ V INPUT CHARACTERISTICS CMIR Common Mode Input Range Guaranteed by CMRR test ±3 ±3.3 CMRR Common Mode Rejection Ratio VIN = ±3V 50 62 75 dB -ICMR - Input Current Common Mode Rejection -1 0.1 +1 µA/V +IIN + Input Current -10 2 +10 µA -IIN - Input Current -10 2 +10 µA RIN Input Resistance 300 650 1200 kΩ CIN Input Capacitance 3 + Input 1 pF EL5164, EL5165, EL5364 Electrical Specifications VS+ = +5V, VS- = -5V, RF = 750Ω for AV = 1, RF = 375Ω for AV = 2, RL = 150Ω, VENABLE = VS+ - 1V, TA = 25°C unless otherwise specified. (Continued) PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT RL = 150Ω to GND ±3.6 ±3.8 ±4.0 V RL = 1kΩ to GND ±3.9 ±4.1 ±4.2 V Output Current RL =10Ω to GND 100 140 190 mA ISON Supply Current - Enabled No load, VIN = 0V 3.2 3.5 4.2 mA ISOFF+ Supply Current - Disabled, per Amplifier +75 µA ISOFF- Supply Current - Disabled, per Amplifier No load, VIN = 0V -75 -14 0 µA PSRR Power Supply Rejection Ratio DC, VS = ±4.75V to ±5.25V 65 79 -IPSR - Input Current Power Supply Rejection DC, VS = ±4.75V to ±5.25V -1 0.1 OUTPUT CHARACTERISTICS VO IOUT Output Voltage Swing SUPPLY 0 dB +1 µA/V ENABLE (EL5164 ONLY) tEN Enable Time 200 ns tDIS Disable Time 800 ns IIHCE CE Pin Input High Current CE = VS+ 1 10 +25 µA IILCE CE Pin Input Low Current CE = (VS+) -5V -1 0 +1 µA VIHCE CE Input High Voltage for Power-down VILCE CE Input Low Voltage for Power-down NOTE: 1. Standard NTSC test, AC signal amplitude = 286mVP-P, f = 3.58MHz 4 VS+ - 1 V VS+ - 3 V EL5164, EL5165, EL5364 Typical Performance Curves 5 3 VCC, VEE = ±5V AV = +2 5 RF=1.2K, CL=5pF 4 RF=1.2K, CL=3.5pF NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 4 RF=1.2K, CL=2.5pF 2 RF=1.2K, CL=0.8pF 1 0 RF=1.5K, CL=0.8pF -1 RF=1.8K, CL=0.8pF -2 RF=2.2K, CL=0.8pF -3 -4 3 VCC, VEE = ±5V CL = 2.5pF AV = +5 RF=160, RG=41 1 0 RF=300, RG=75 RF=360, RG=87 RF=397, RG=97 -1 -2 -3 RF=412, RG=100 RF=560, RG=135 -4 -5 100K 1M 10M 100M -5 100K 1G 1M FREQUENCY (Hz) 5 RF = 510Ω 3 2 RF = 681Ω 1 0 -1 RF = 750Ω -2 RF = 909Ω -3 RF = 1201Ω -4 100K 1M 10M 100M 4 3 2 VCC = +5V VEE = -5V CL = 5pF AV = +2 RL = 150Ω 0 RF = 562Ω RF = 681Ω -1 RF = 866Ω -2 RF = 1.2kΩ -3 -4 100K 1G RF = 412Ω 1 RF = 1.5kΩ 1M 10M 100M FIGURE 3. FREQUENCY RESPONSE FOR VARIOUS RF FIGURE 4. FREQUENCY RESPONSE FOR VARIOUS RF 5 RL = 150Ω RF = 422Ω RG = 422Ω AMPLITUDE (V) NORMALIZED GAIN (dB) 3 2 1 0 -1 VCC, VEE= -2 -3 -4 -5 100K 1M 10M 6V 5V 4V 3V 2.5V 100M INPUT OUTPUT 2V/DIV 1V/DIV VCC, VEE = ±5 V AV = +2 RL = 150Ω 1G FREQUENCY (Hz) FIGURE 5. FREQUENCY RESPONSE FOR VARIOUS POWER SUPPLY VOLTAGES 5 1G FREQUENCY (Hz) FREQUENCY (Hz) 4 1G 6 VCC, VEE = ±5V CL = 2.5pF AV = +1 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 100M FIGURE 2. FREQUENCY RESPONSE FOR VARIOUS RF 6 4 10M FREQUENCY (Hz) FIGURE 1. FREQUENCY RESPONSE FOR VARIOUS RF AND CL 5 RF=220, RG=55 2 ns FIGURE 6. RISE TIME (ns) EL5164, EL5165, EL5364 Typical Performance Curves 0 -10 (Continued) 0 VCC = +5V VEE = -5V AV = +1 -20 DISTORTION (dB) -20 PSRR (dB) VCC = +5 V VEE = -5 V AV = +1 VOUT = 2VP-P RL = 100Ω -10 -30 -40 VEE -50 VCC -60 -30 -40 THD -50 -60 SECOND HARMONIC -70 -70 THIRD HARMONIC -80 -80 10K 100K 1M 10M 100M -90 1G 0 10 20 30 40 FREQUENCY (MHz) FREQUENCY (Hz) 0 DISTORTION (dB) -30 OUTPUT IMPEDANCE (Ω) VCC = +5 V VEE = -5 V AV = +2 VOUT = 2VP-P, RL = 100Ω -20 -40 -50 THD -60 -70 -80 THIRD HARMONIC -90 -100 VCC = +5 V VEE = -5 V AV = +2 10 1 0.1 0.01 SECOND HARMONIC 0 10 20 30 40 FREQUENCY (MHz) 50 10K 60 100K 1M 10M 100M FREQENCY (Hz) FIGURE 10. OUTPUT IMPEDANCE FIGURE 9. DISTORTION vs FREQUENCY (AV = +2) 1M VOLTAGE NOISE (nV/√Hz) VCC, VEE = ±5V 100K VCC, VEE= ±6V ROL (Ω) 60 FIGURE 8. DISTORTION vs FREQUENCY (AV = +1) FIGURE 7. PSRR -10 50 10K ±5V ±4V 1K ±3V ±2.5V 100 10 1 0 10 10K 100K 1M 10M 100M FREQUENCY (Hz) FIGURE 11. ROL FOR VARIOUS VCC, VEE 6 1G 100 1K 10K 100K FREQENCY (Hz) FIGURE 12. VOLTAGE NOISE 1M EL5164, EL5165, EL5364 Typical Performance Curves (Continued) VCC = +5V, VEE = -5V AV = +2 RL = 150Ω CURRENT NOISE (pA) VCC = +5V VEE = -5V 100 CH1 10 CH2 1 100 1K 10K 100K FREQUENCY (Hz) FIGURE 14. TURN ON DELAY FIGURE 13. CURRENT NOISE CH1 VCC = +5V VEE = -5V AV = +2 RL = 150Ω CH2 PHASE 200 0.002 100 0.001 0.00 0 MAGNITUDE -100 -0.001 -200 -0.002 -300 -0.003 VCC = +5V, VEE = -5V AV = +2 TEST FREQUENCY, 3.58MHz 1V -0.004 DIFFERENTIAL PHASE (°) DIFFERENTIAL GAIN (µdB) 300 -0.005 0 -1V DC INPUT FIGURE 15. TURN OFF DELAY FIGURE 16. DIFFERENTIAL GAIN/PHASE vs DC INPUT VOLTAGE AT 3.58MHz -30 -30 -50 -60 -70 VCC = +5V VEE = -5V RL = 100Ω RF = 860Ω RG = 860Ω CL = 5pF -40 -50 C -80 CROSSTALK (dB) NORMALIZED GAIN (dB) -40 B -90 A -100 -60 -80 -90 -110 -120 1M 10M 100M FREQUENCY (Hz) FIGURE 17. FREQUENCY RESPONSE FOR VARIOUS CHANNELS 7 1G A TO C A TO B -100 -110 100K C TO B -70 -120 -130 10K VCC = +5V VEE = -5V RL = 100Ω RF = 422Ω RG = 422Ω -130 10K 100K 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 18. CHANNEL CROSSTALK BETWEEN CHANNELS EL5164, EL5165, EL5364 Typical Performance Curves JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 1.250W 1.4 SO16 (0.150”) θJA=80°C/W 1.2 POWER DISSIPATION (W) POWER DISSIPATION (W) 1.4 (Continued) 1 0.8 909mW 0.6 SO8 θJA=110°C/W 435mW 0.4 SOT23-5/6 θJA=230°C/W 0.2 0 0 25 50 75 85 100 125 1.2 1 0.6 0.4 0.2 0 25 AMBIENT TEMPERATURE (°C) 1.2 POWER DISSIPATION (W) POWER DISSIPATION (W) 0.9 0.8 0.7 SO8 625mW 0.5 θJA=160°C/W 0.4 391mW 0.3 SOT23-5/6 θJA=256°C/W 0.2 0.1 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (°C) FIGURE 21. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE 8 75 85 100 125 150 FIGURE 20. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 0.6 50 AMBIENT TEMPERATURE (°C) FIGURE 19. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE 1 QSOP16 θJA=112°C/W 0.8 893mW 0 150 JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD SO16 (0.150”) 1.136W 1 θJA=110°C/W 0.8 633mW 0.6 0.4 QSOP16 θJA=158°C/W 0.2 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (°C) FIGURE 22. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE EL5164, EL5165, EL5364 Pin Descriptions EL5164 (8-PIN SO) EL5164 (6-PIN SOT-23) EL5165 (5-PIN SOT-23) 1, 5 2 4 4 PIN NAME FUNCTION NC Not connected IN- Inverting input EQUIVALENT CIRCUIT VS+ IN+ IN- VSCircuit 1 3 3 3 IN+ Non-inverting input 4 2 2 VS- Negative supply 6 1 1 OUT Output (See circuit 1) VS+ OUT VSCircuit 2 7 6 8 5 5 VS+ Positive supply CE Chip enable, allowing the pin to float or applying a low logic level will enable the amplifier. VS+ CE VSCircuit 3 Applications Information Product Description The EL5164, EL5165, and EL5364 are current-feedback operational amplifiers that offers a wide -3dB bandwidth of 600MHz and a low supply current of 5mA per amplifier. The EL5164, EL5165, and EL5364 work with supply voltages ranging from a single 5V to 10V and they are also capable of swinging to within 1V of either supply on the output. Because of their current-feedback topology, the EL5164, EL5165, and EL5364 do not have the normal gain-bandwidth product associated with voltage-feedback operational amplifiers. Instead, its -3dB bandwidth to remain relatively constant as closed-loop gain is increased. This combination of high bandwidth and low power, together with aggressive pricing make the EL5164, EL5165, and EL5364 ideal choices for many low-power/high-bandwidth applications such as portable, handheld, or battery-powered equipment. For varying bandwidth needs, consider the EL5166 and EL5167 with 1GHz on a 8.5mA supply current or the EL5162 and EL5163 with 300MHz on a 8.5mA supply current. 9 Versions include single, dual, and triple amp packages with 5-pin SOT-23, 16-pin QSOP, and 8-pin or 16-pin SO outlines. Power Supply Bypassing and Printed Circuit Board Layout As with any high frequency device, good printed circuit board layout is necessary for optimum performance. Low impedance ground plane construction is essential. Surface mount components are recommended, but if leaded components are used, lead lengths should be as short as possible. The power supply pins must be well bypassed to reduce the risk of oscillation. The combination of a 4.7µF tantalum capacitor in parallel with a 0.01µF capacitor has been shown to work well when placed at each supply pin. For good AC performance, parasitic capacitance should be kept to a minimum, especially at the inverting input. (See the Capacitance at the Inverting Input section.) Even when ground plane construction is used, it should be removed from the area near the inverting input to minimize any stray capacitance at that node. Carbon or Metal-Film resistors are EL5164, EL5165, EL5364 acceptable with the Metal-Film resistors giving slightly less peaking and bandwidth because of additional series inductance. Use of sockets, particularly for the SO package, should be avoided if possible. Sockets add parasitic inductance and capacitance which will result in additional peaking and overshoot. Disable/Power-Down The EL5164 amplifier can be disabled placing its output in a high impedance state. When disabled, the amplifier supply current is reduced to < 150µA. The EL5164 is disabled when its CE pin is pulled up to within 1V of the positive supply. Similarly, the amplifier is enabled by floating or pulling its CE pin to at least 3V below the positive supply. For ±5V supply, this means that an EL5164 amplifier will be enabled when CE is 2V or less, and disabled when CE is above 4V. Although the logic levels are not standard TTL, this choice of logic voltages allows the EL5164 to be enabled by tying CE to ground, even in 5V single supply applications. The CE pin can be driven from CMOS outputs. Capacitance at the Inverting Input Any manufacturer’s high-speed voltage- or current-feedback amplifier can be affected by stray capacitance at the inverting input. For inverting gains, this parasitic capacitance has little effect because the inverting input is a virtual ground, but for non-inverting gains, this capacitance (in conjunction with the feedback and gain resistors) creates a pole in the feedback path of the amplifier. This pole, if low enough in frequency, has the same destabilizing effect as a zero in the forward open-loop response. The use of largevalue feedback and gain resistors exacerbates the problem by further lowering the pole frequency (increasing the possibility of oscillation.) The EL5164, EL5165, and EL5364 have been optimized with a TBDΩ feedback resistor. With the high bandwidth of these amplifiers, these resistor values might cause stability problems when combined with parasitic capacitance, thus ground plane is not recommended around the inverting input pin of the amplifier. Feedback Resistor Values The EL5164, EL5165, and EL5364 have been designed and specified at a gain of +2 with RF approximately 412Ω. This value of feedback resistor gives 300MHz of -3dB bandwidth at AV = 2 with 2dB of peaking. With AV = -2, an RF of 300Ω gives 275MHz of bandwidth with 1dB of peaking. Since the EL5164, EL5165, and EL5364 are current-feedback amplifiers, it is also possible to change the value of RF to get more bandwidth. As seen in the curve of Frequency Response for Various RF and RG, bandwidth and peaking can be easily modified by varying the value of the feedback resistor. Because the EL5164, EL5165, and EL5364 are currentfeedback amplifiers, their gain-bandwidth product is not a constant for different closed-loop gains. This feature actually 10 allows the EL5164, EL5165, and EL5364 to maintain about the same -3dB bandwidth. As gain is increased, bandwidth decreases slightly while stability increases. Since the loop stability is improving with higher closed-loop gains, it becomes possible to reduce the value of RF below the specified TBDΩ and still retain stability, resulting in only a slight loss of bandwidth with increased closed-loop gain. Supply Voltage Range and Single-Supply Operation The EL5164, EL5165, and EL5364 have been designed to operate with supply voltages having a span of greater than 5V and less than 10V. In practical terms, this means that they will operate on dual supplies ranging from ±2.5V to ±5V. With single-supply, the EL5164, EL5165, and EL5364 will operate from 5V to 10V. As supply voltages continue to decrease, it becomes necessary to provide input and output voltage ranges that can get as close as possible to the supply voltages. The EL5164, EL5165, and EL5364 have an input range which extends to within 2V of either supply. So, for example, on ±5V supplies, the EL5164, EL5165, and EL5364 have an input range which spans ±3V. The output range of the EL5164, EL5165, and EL5364 is also quite large, extending to within 1V of the supply rail. On a ±5V supply, the output is therefore capable of swinging from -4V to +4V. Single-supply output range is larger because of the increased negative swing due to the external pull-down resistor to ground. Video Performance For good video performance, an amplifier is required to maintain the same output impedance and the same frequency response as DC levels are changed at the output. This is especially difficult when driving a standard video load of 150Ω, because of the change in output current with DC level. Previously, good differential gain could only be achieved by running high idle currents through the output transistors (to reduce variations in output impedance.) These currents were typically comparable to the entire 5.5mA supply current of each EL5164, EL5165, and EL5364 amplifiers. Special circuitry has been incorporated in the EL5164, EL5165, and EL5364 to reduce the variation of output impedance with current output. This results in dG and dP specifications of TBD% and TBD°, while driving 150Ω at a gain of 2. Video performance has also been measured with a 500Ω load at a gain of +1. Under these conditions, the EL5164, EL5165, and EL5364 have dG and dP specifications of 0.01% and 0.01°, respectively. Output Drive Capability In spite of their low 5.5mA of supply current, the EL5164, EL5165, and EL5364 are capable of providing a minimum of ±75mA of output current. With a minimum of ±75mA of output drive, the EL5164, EL5165, and EL5364 are capable of driving 50Ω loads to both rails, making it an excellent EL5164, EL5165, EL5364 where: choice for driving isolation transformers in telecommunications applications. • VS = Supply voltage Driving Cables and Capacitive Loads When used as a cable driver, double termination is always recommended for reflection-free performance. For those applications, the back-termination series resistor will decouple the EL5164, EL5165, and EL5364 from the cable and allow extensive capacitive drive. However, other applications may have high capacitive loads without a backtermination resistor. In these applications, a small series resistor (usually between 5Ω and 50Ω) can be placed in series with the output to eliminate most peaking. The gain resistor (RG) can then be chosen to make up for any gain loss which may be created by this additional resistor at the output. In many cases it is also possible to simply increase the value of the feedback resistor (RF) to reduce the peaking. • ISMAX = Maximum supply current of 1A • VOUTMAX = Maximum output voltage (required) • RL = Load resistance Typical Application Circuits 0.1µF +5V IN+ VS+ IN- OUT VS- 0.1µF -5V 375Ω Current Limiting 5Ω 0.1µF +5V The EL5164, EL5165, and EL5364 have no internal currentlimiting circuitry. If the output is shorted, it is possible to exceed the Absolute Maximum Rating for output current or power dissipation, potentially resulting in the destruction of the device. IN+ IN- With the high output drive capability of the EL5164, EL5165, and EL5364, it is possible to exceed the 125°C Absolute Maximum junction temperature under certain very high load current conditions. Generally speaking when RL falls below about 25Ω, it is important to calculate the maximum junction temperature (TJMAX) for the application to determine if power supply voltages, load conditions, or package type need to be modified for the EL5164, EL5165, and EL5364 to remain in the safe operating area. These parameters are calculated as follows: T JMAX = T MAX + ( θ JA × n × PD MAX ) where: • TMAX = Maximum ambient temperature 375Ω VS- 0.1µF 375Ω 375Ω 375Ω 0.1µF +5V IN+ IN375Ω -5V 375Ω +5V IN+ IN- • n = Number of amplifiers in the package 5Ω FIGURE 23. INVERTING 200mA OUTPUT CURRENT DISTRIBUTION AMPLIFIER VIN • θJA = Thermal resistance of the package OUT -5V VIN Power Dissipation VS+ VOUT -5V VS+ VS- OUT 0.1µF 0.1µF VS+ VS- OUT VOUT 0.1µF • PDMAX = Maximum power dissipation of each amplifier in the package PDMAX for each amplifier can be calculated as follows: V OUTMAX PD MAX = ( 2 × V S × I SMAX ) + ( V S – V OUTMAX ) × ---------------------------R L 11 FIGURE 24. FAST-SETTLING PRECISION AMPLIFIER EL5164, EL5165, EL5364 0.1µF +5V IN+ VS+ IN- VS- -5V IN+ IN0.1µF IN+ VS+ IN- VS- -5V VIN 375Ω VS- -5V 162Ω 0.1µF 0.1µF 1kΩ 240Ω 0.1µF +5V OUT OUT 375Ω 375Ω VOUT+ 0.1µF +5V VS+ OUT 375Ω 0.1µF +5V 162Ω 0.1µF VOUT- IN+ 1kΩ VS+ IN- 0.1µF VS- -5V 375Ω 375Ω TRANSMITTER OUT VOUT 0.1µF 375Ω RECEIVER FIGURE 25. DIFFERENTIAL LINE DRIVER/RECEIVER 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 12