EL5170, EL5370 ® Data Sheet October 29, 2004 FN7309.5 100MHz Differential Twisted-Pair Drivers Features The EL5170 and EL5370 are single and triple high bandwidth amplifiers with a fixed gain of 2. They are primarily targeted for applications such as driving twistedpair lines in component video applications. The inputs signal can be in either single-ended or differential form but the outputs are always in differential form. • Fully differential inputs and outputs The output common mode level for each channel is set by the associated VREF pin, which have a -3dB bandwidth of over 70MHz. Generally, these pins are grounded but can be tied to any voltage reference. All outputs are short circuit protected to withstand temporary overload condition. • Differential input range ±2.3V typ. • 100MHz 3dB bandwidth at fixed gain of 2 • 1200V/µs slew rate • Single 5V or dual ±5V supplies • 50mA maximum output current • Low power - 7.4mA per channel • Pb-Free Available (RoHS Compliant) Applications The EL5170 and EL5370 are specified for operation over the full -40°C to +85°C temperature range. • Twisted-pair drivers Ordering Information • VGA over twisted-pairs PART NUMBER • Differential line drivers • ADSL/HDSL drivers PACKAGE TAPE & REEL PKG. DWG. # EL5170IS 8-Pin SO - MDP0027 EL5170IS-T7 8-Pin SO 7” MDP0027 EL5170IS-T13 8-Pin SO 13” MDP0027 EL5170ISZ (See Note) 8-Pin SO (Pb-free) - MDP0027 EL5170ISZ-T7 (See Note) 8-Pin SO (Pb-free) 7” MDP0027 EL5170ISZT13 (See Note) 8-Pin SO (Pb-free) 13” EL5170IY 8-Pin MSOP - MDP0043 EL5170IY-T7 8-Pin MSOP 7” EL5170IY-T13 8-Pin MSOP EL5170IYZ (See Note) MDP0027 • Single ended to differential amplification • Transmission of analog signals in a noisy environment Pinouts EL5170 (8-PIN SO, MSOP) TOP VIEW IN+ 1 EN 2 8 OUT+ + - 7 VS- EL5370 (24-PIN QSOP) TOP VIEW EN 1 INP1 2 + - 24 OUT1 23 OUT1B INN1 3 22 NC REF1 4 21 VSP MDP0043 NC 5 20 VSN 13” MDP0043 INP2 6 8-Pin MSOP (Pb-free) - MDP0043 INN2 7 EL5170IYZ-T7 (See Note) 8-Pin MSOP (Pb-free) 7” MDP0043 EL5170IYZT13 (See Note) 8-Pin MSOP (Pb-free) 13” MDP0043 EL5370IU 24-Pin QSOP - MDP0040 EL5370IU-T7 24-Pin QSOP 7” MDP0040 EL5370IU-T13 24-Pin QSOP 13” MDP0040 IN- 3 REF 4 6 VS+ 5 OUT- REF2 8 19 NC + - NC 9 INP3 10 INN3 11 REF3 12 18 OUT2 17 OUT2B 16 NC + - 15 OUT3 14 OUT3B 13 NC NOTE: Intersil Pb-free 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-020C. 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. All other trademarks mentioned are the property of their respective owners. EL5170, EL5370 Absolute Maximum Ratings (TA = 25°C) Supply Voltage (VS+ to VS-) . . . . . . . . . . . . . . . . . . . . . . . . . . 12.6V Maximum Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . ±60mA Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135°C Recommended 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. Typ 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 VS+ = +5V, VS- = -5V, TA = 25°C, VIN = 0V, AV = 2, RLD = 200Ω, CLD = 1pF, unless otherwise specified. DESCRIPTION CONDITIONS MIN TYP MAX UNIT AC PERFORMANCE BW -3dB Bandwidth 100 MHz BW ± 0.1dB Bandwidth 12 MHz SR Slew Rate VOUT = 2VP-P, 20% to 80% 1100 V/µs TSTL Settling Time to 0.1% VOUT = 2VP-P 20 ns TOVR Output Overdrive Recovery time 40 ns 800 VREFBW (-3dB) VREF -3dB Bandwidth AV =1, CLD = 2.7pF 70 MHz VREFSR+ VREF Slew Rate - Rise VOUT = 2VP-P, 20% to 80% 125 V/µs VREFSR- VREF Slew Rate - Fall VOUT = 2VP-P, 20% to 80% 65 V/µs VN Input Voltage Noise f = 10kHz 28 nV/√Hz HD2 Second Harmonic Distortion VOUT = 2VP-P, 1MHz -79 dBc HD2 Second Harmonic Distortion VOUT = 2VP-P, 10MHz -65 dBc HD3 Third Harmonic Distortion VOUT = 2VP-P, 1MHz -62 dBc HD3 Third Harmonic Distortion VOUT = 2VP-P, 10MHz -43 dBc dG Differential Gain at 3.58MHz RLD = 300Ω, AV = 2 0.14 % dθ Differential Phase at 3.58MHz RLD = 300Ω, AV = 2 0.38 ° eS Channel Separation - For EL5370 only at f = 1MHz 85 dB INPUT CHARACTERISTICS VOS Input Referred Offset Voltage IIN Input Bias Current (VIN, VINB) IREF Input Bias Current at REF Pin ±6 ±25 mV -10 -6 -2 µA VREF = +3.2V 0.5 1.25 3 µA VREF = -3.2V -1 0 +1 µA 1.98 2 2.02 V VIN = ±1V Gain Gain Accuracy RIN Differential Input Resistance 300 kΩ CIN Differential Input Capacitance 1 pF DMIR Differential Mode Input Range ±2.1 ±2.3 V CMIR+ Common Mode Positive Input Range at VIN+, VIN- 3.2 3.4 V CMIR- Common Mode Negative Input Range at VIN+, VIN- VREFIN Reference Input Voltage Range - Positive VIN+ = VIN- = 0V Reference Input Voltage Range Negative 2 -4.5 3.4 -4.2 3.8 -3.3 V V -3 V FN7309.5 EL5170, EL5370 Electrical Specifications PARAMETER VS+ = +5V, VS- = -5V, TA = 25°C, VIN = 0V, AV = 2, RLD = 200Ω, CLD = 1pF, unless otherwise specified. DESCRIPTION CONDITIONS VREFOS Output Offset Relative to VREF CMRR Input Common Mode Rejection Ratio MIN TYP MAX UNIT -140 60 +140 mV VIN = ±2.5V 65 84 dB RLD = 200Ω 3.3 3.6 V OUTPUT CHARACTERISTICS VOUT Positive Output Voltage Swing Negative Output Voltage Swing IOUT(Max) ROUT -3.3 Maximum Output Current -3 V RL = 10Ω (EL5170) ±50 ±80 mA RL = 10Ω (EL5370) ±70 ±85 mA 60 mΩ Output Impedance SUPPLY VSUPPLY Supply Operating Range IS(ON) Power Supply Current - Per channel 6 IS(OFF)+ Positive Power Supply Current - Disabled EN pin tied to 4.8V (EL5170) IS(OFF)- Negative Power Supply Current Disabled IS(OFF)+ Positive Power Supply Current - Disabled EN pin tied to 4.8V (EL5370) IS(OFF)- Negative Power Supply Current Disabled PSRR Power Supply Rejection Ratio VS+ to VS- 4.75 11 V 7.4 8.4 mA 60 80 100 µA -150 -120 -90 µA 0.5 2 5 µA -150 -120 -90 µA VS from ±4.5V to ±5.5V (EL5170) 70 83 dB VS from ±4.5V to ±5.5V (EL5370) 65 83 dB ENABLE tEN Enable Time 200 ns tDS Disable Time 1 µs VIH EN Pin Voltage for Power-up VIL EN Pin Voltage for Shut-down IIH-EN EN Pin Input Current High - per channel At VEN = 5V IIL-EN EN Pin Input Current Low - per channel At VEN = 0V VS+ 1.5 VS+ 0.5 V 40 -6 V -3 50 µA µA Pin Descriptions EL5170 EL5370 PIN NAME 1 2, 6, 10 IN+, INP1, 2, 3 2 1 EN 3 3, 7, 11 IN-, INN1, 2, 3 4 4, 8, 12 REF1, 2, 3 5 14, 17, 23 6 21 VS+, VSP Positive supply 7 20 VS-, VSN Negative supply 8 15, 18, 24 OUT+, OUT1, 2, 3 5, 9, 13, 16, 19, 22 NC 3 PIN FUNCTION Non-inverting inputs Enable Inverting inputs Reference input, sets common-mode output voltage OUT-, OUT1B, 2B, 3B Inverting outputs Non-inverting outputs No connects, grounded for best crosstalk performance FN7309.5 Connection Diagrams EL5170 RS1 50Ω -5V RRT2 1 INP INP OUT 8 LOADP 50Ω 4 EN 2 EN VSN 7 INN 3 INN VSP 6 REF 4 REF OUTB 5 RS2 50Ω RRT2 LOADN 50Ω RS3 50Ω +5V +5V ENABLE 1 EN INP1 2 INP1 RRT1 OUT1 24 RRT1B OUT1B 23 LD1 50Ω LD1B 50Ω INN1 3 INN1 NC 22 REF1 4 REF1 VSP 21 5 NC VSN 20 INP2 6 INP2 NC 19 INN2 7 INN2 OUT2 18 RRT2 RRT2B 8 REF2 REF2 9 NC INP3 10 INP3 INN3 REF3 RSP1 50Ω RSN1 50Ω RSR1 50Ω RSP2 50Ω RSN2 50Ω RSR2 50Ω RSP3 50Ω RSN3 50Ω OUT2B 17 LD2 50Ω LD2B 50Ω NC 16 RRT3 OUT3 15 11 INN3 OUT3B 14 12 REF3 NC 13 RRT3B 50Ω RSR3 50Ω -5V LD3 50Ω LD3B EL5170, EL5370 EL5370 FN7309.5 EL5170, EL5370 Typical Performance Curves CLD = 1pF, VODP-P = 200mV 10 9 9 8 8 7 7 6 VOP-P = 200mV 5 4 3 GAIN (dB) GAIN (dB) VS = ±5V, AV = 2, RLD = 200Ω, CLD = 1pF 10 RLD = 1kΩ RLD = 500Ω 6 5 4 RLD = 200Ω 3 VOP-P = 2V 2 2 1 0 100K 1M 10M 100M RLD = 100Ω 1 VOP-P = 1V 0 100K 1G 10M 1M FREQUENCY (Hz) 100M 1G FREQUENCY (Hz) FIGURE 2. SMALL SIGNAL FREQUENCY RESPONSE vs RLD FIGURE 1. FREQUENCY RESPONSE VS = ±5V, RLD = 200Ω, VODP-P = 200mV 4 11 10 2 GAIN (dB) 9 CLD = 40pF 8 GAIN (dB) 3 CLD = 75pF 7 6 VREF = 1VP-P -3 4 CLD = 0pF 3 -4 -5 2 1 100K 0 -1 -2 CLD = 20pF 5 VREF = 200mVP-P 1 1M 10M 100M -6 1M 1G 10M 100M FREQUENCY (Hz) FREQUENCY (Hz) FIGURE 4. FREQUENCY RESPONSE vs VREF FIGURE 3. SMALL SIGNAL FREQUENCY RESPONSE vs CLD 100Ω VINCM + - VODM VOCM 100Ω 0 COMMON MODE REJECTION (dB) -10 -10 -20 PSRR (dB) -30 -40 -50 PSRR- -60 -70 PSRR+ -80 -90 100K 1M 10M FREQUENCY (Hz) FIGURE 5. POWER SUPPLY REJECTION RATIO vs FREQUENCY 5 100M -20 -30 -40 -50 VOCM/VINCM -60 -70 VODM/VINCM -80 -90 100K 1M 10M 100M FREQUENCY (Hz) FIGURE 6. COMMON MODE REJECTION vs FREQUENCY FN7309.5 EL5170, EL5370 Typical Performance Curves (Continued) 100Ω VIN + - RT VCM VODM R 100Ω 1000 VOLTAGE NOISE (nV/√Hz) 0 BALANCE ERROR (dB) -10 -20 -30 -40 VOCM/VODM -50 -60 100K 1M 10M 100 10 10 100M 100 1K 1M 10M FIGURE 8. INPUT VOLTAGE NOISE vs FREQUENCY FIGURE 7. DIFFERENTIAL MODE OUTPUT BALANCE ERROR vs FREQUENCY RLD = 200Ω -40 110 -50 105 CH2<=>CH1 CH3<=>CH2 -60 100 BW (MHz) CH2<=>CH3 -70 CH1<=>CH2 -80 -90 95 90 CH3<=>CH1 -100 85 CH1<=>CH3 -110 100K 1M 10M 80 4 100M 6 5 8 7 FREQENCY (Hz) -30 7.76 11 12 VS = ±5V, RLD = 200Ω, VOP-P = 2V HD3 -40 DISTORTION (dB) IS+ 7.72 7.7 10 FIGURE 10. BANDWIDTH vs SUPPLY VOLTAGE 7.78 7.74 9 VS (V) FIGURE 9. CHANNEL ISOLATION vs FREQUENCY IS (mA) 100K FREQENCY (Hz) FREQUENCY (Hz) CHANNEL ISOLATION (dB) 10K IS- 7.68 7.66 7.64 7.62 -50 -60 HD2 -70 -80 7.6 7.58 -90 4 5 6 8 7 9 10 11 VS (V) FIGURE 11. SUPPLY CURRENT vs SUPPLY VOLTAGE 6 0 2 4 6 8 10 12 14 16 18 20 FREQUENCY (MHz) FIGURE 12. HARMONIC DISTORTION vs FREQUENCY FN7309.5 EL5170, EL5370 Typical Performance Curves (Continued) 500mV/DIV 0.5V/DIV 20ns/DIV 40ns/DIV FIGURE 13. VCOM TRANSIENT RESPONSE FIGURE 14. LARGE SIGNAL TRANSIENT RESPONSE 100mV/DIV 20ns/DIV FIGURE 16. DISABLED RESPONSE FIGURE 15. SMALL SIGNAL TRANSIENT RESPONSE POWER DISSIPATION (W) 1.2 JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 1 870mW 0.8 QSOP24 θJA=115°C/W 625mW 0.6 SO8 θJA=160°C/W 0.4 486mW MSOP8 θJA=206°C/W 0.2 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (°C) FIGURE 17. ENABLED RESPONSE 7 FIGURE 18. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE FN7309.5 EL5170, EL5370 Typical Performance Curves (Continued) POWER DISSIPATION (W) 1.4 JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 1.2 1.136W 1 909mW 0.8 QSOP24 θJA=88°C/W SO8 θJA=110°C/W 870mW 0.6 MSOP8/10 θJA=115°C/W 0.4 0.2 0 0 25 75 85 100 50 125 150 AMBIENT TEMPERATURE (°C) FIGURE 19. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE Simplified Schematic 200Ω VS+ R1 IN+ R3 R2 IN- FBP R4 R7 R8 FBN VB1 OUT+ RCD REF RCD OUT- VB2 CC R9 R10 CC R5 R6 VS- 400Ω Description of Operation and Application Information Product Description The EL5170 and EL5370 are wide bandwidth, low power and single/differential ended to differential output amplifiers. They have a fixed gain of 2. The EL5170 is a single channel differential amplifier. The EL5370 is a triple channel differential amplifier. The EL5170 and EL5370 have a –3dB bandwidth of 100MHz while driving a 200Ω differential load. The EL5170 and EL5370 are available with a power down feature to reduce the power while the amplifiers are disabled. 8 200Ω Input, Output and Supply Voltage Range The EL5170 and EL5370 have been designed to operate with a single supply voltage of 5V to 10V or a split supplies with its total voltage from 5V to 10V. The amplifiers have an input common mode voltage range from -4.5V to 3.4V for ±5V supply. The differential mode input range (DMIR) between the two inputs is from –2.3V to +2.3V. The input voltage range at the REF pin is from –3.3V to 3.8V. If the input common mode or differential mode signal is outside the above-specified ranges, it will cause the output signal distorted. The output of the EL5170 and EL5370 can swing from –3.3V to 3.6V at 200Ω differential load at ±5V supply. As the load resistance becomes lower, the output swing is reduced. FN7309.5 EL5170, EL5370 Differential and Common Mode Gain Settings As shown at the simplified schematic, since the feedback resistors RF and the gain resistor are integrated with 200Ω and 400Ω, the EL5170 and EL5370 have a fixed gain of 2. The common mode gain is always one. The maximum power dissipation allowed in a package is determined according to: T JMAX – T AMAX PD MAX = -------------------------------------------Θ JA Driving Capacitive Loads and Cables Where: The EL5170 and EL5370 can drive 75pF differential capacitor in parallel with 200Ω differential load with less than 3.5dB of peaking. If less peaking is desired in applications, a small series resistor (usually between 5Ω to 50Ω) can be placed in series with each output to eliminate most peaking. However, this will reduce the gain slightly. • TJMAX = Maximum junction temperature When used as a cable driver, double termination is always recommended for reflection-free performance. For those applications, a back-termination series resistor at the amplifier’s output will isolate the amplifier from the cable and allow extensive capacitive drive. However, other applications may have high capacitive loads without a back-termination resistor. Again, a small series resistor at the output can help to reduce peaking. Disable/Power-Down The EL5170 and EL5370 can be disabled and placed their outputs in a high impedance state. The turn off time is about 1µs and the turn on time is about 200ns. When disabled, the amplifier’s supply current is reduced to 2µA for IS+ and 120µA for IS- typically, thereby effectively eliminating the power consumption. The amplifier’s power down can be controlled by standard CMOS signal levels at the ENABLE pin. The applied logic signal is relative to VS+ pin. Letting the EN pin float or applying a signal that is less than 1.5V below VS+ will enable the amplifier. The amplifier will be disabled when the signal at EN pin is above VS+ -0.5V. Output Drive Capability The EL5170 and EL5370 have internal short circuit protection. Its typical short circuit current is ±80mA. If the output is shorted indefinitely, the power dissipation could easily increase such that the part will be destroyed. Maximum reliability is maintained if the output current never exceeds ±60mA. This limit is set by the design of the internal metal interconnect. Power Dissipation With the high output drive capability of the EL5170 and EL5370 it is possible to exceed the 125°C absolute maximum junction temperature under certain load current conditions. Therefore, it is important to calculate the maximum junction temperature for the application to determine if the load conditions or package types need to be modified for the amplifier to remain in the safe operating area. 9 • TAMAX = Maximum ambient temperature • θJA = Thermal resistance of the package The maximum power dissipation actually produced by an IC is the total quiescent supply current times the total power supply voltage, plus the power in the IC due to the load, or: ∆V O PD = i × V S × I SMAX + V S × ------------ R LD Where: • VS = Total supply voltage • ISMAX = Maximum quiescent supply current per channel • ∆VO = Maximum differential output voltage of the application • RLD = Differential load resistance • ILOAD = Load current • i = Number of channels By setting the two PDMAX equations equal to each other, we can solve the output current and RLOAD to avoid the device overheat. Power Supply Bypassing and Printed Circuit Board Layout As with any high frequency device, a good printed circuit board layout is necessary for optimum performance. Lead lengths should be as sort as possible. The power supply pin must be well bypassed to reduce the risk of oscillation. For normal single supply operation, where the VS- pin is connected to the ground plane, a single 4.7µF tantalum capacitor in parallel with a 0.1µF ceramic capacitor from VS+ to GND will suffice. This same capacitor combination should be placed at each supply pin to ground if split supplies are to be used. In this case, the VS- pin becomes the negative supply rail. For good AC performance, parasitic capacitance should be kept to minimum. Use of wire wound resistors should be avoided because of their additional series inductance. Use of sockets should also be avoided if possible. Sockets add parasitic inductance and capacitance that can result in compromised performance. Minimizing parasitic capacitance at the amplifier’s inverting input pin is very important. The feedback resistor should be placed very close to the inverting input pin. Strip line design techniques are recommended for the signal traces. FN7309.5 EL5170, EL5370 Typical Applications 0Ω 50 IN+ 50Ω EL5170/ EL5370 50 IN- ZO = 100Ω 50Ω VFB VIN EL5172/ EL5372 VINB VOUT VREF FIGURE 20. TWISTED PAIR DRIVER 0Ω VFB + EL5170/ EL5370 IN- IN+ VIN VINB EL5172/ EL5372 VOUT VREF FIGURE 21. DUAL COAXIAL CABLE DRIVER 10V VIN IN+ IN- EL5170/ EL5370 FIGURE 22. SINGLE SUPPLY TWISTED PAIR DRIVER 10 FN7309.5 EL5170, EL5370 EL5172/ EL5372 IN+ EL5170/ EL5370 INEL5172 FIGURE 23. DUAL SIGNAL TRANSMISSION CIRCUIT SO Package Outline Drawing 11 FN7309.5 EL5170, EL5370 MSOP Package Outline Drawing 12 FN7309.5 EL5170, EL5370 QSOP Package Outline Drawing NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at http://www.intersil.com/design/packages/index.asp 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 13 FN7309.5