EL5173, EL5373 ® Data Sheet February 16, 2005 FN7312.4 450MHz Differential Twisted-Pair Drivers Features The EL5173 and EL5373 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 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 REF pin, which have a -3dB bandwidth of over 190MHz. Generally, these pins are grounded but can be tied to any voltage reference. All outputs are short circuit protected to withstand temporary overload condition. The EL5173 and EL5373 are specified for operation over the full -40°C to +85°C temperature range. • 450MHz 3dB bandwidth at fixed gain of 2 • 900V/µs slew rate (EL5173) • 1100V/µs slew rate (EL5373) • Single 5V or dual ±5V supplies • 40mA maximum output current • Low power - 12mA per channel • Pb-Free available (RoHS compliant) Applications • Twisted-pair drivers • Differential line drivers Ordering Information PART NUMBER • Differential input range ±2.3V PACKAGE TAPE & REEL PKG. DWG. # EL5173IS 8-Pin SO - MDP0027 EL5173IS-T7 8-Pin SO 7” MDP0027 EL5173IS-T13 8-Pin SO 13” MDP0027 EL5173ISZ (Note) 8-Pin SO (Pb-free) - MDP0027 EL5173ISZ-T7 (Note) 8-Pin SO (Pb-free) 7” MDP0027 EL5173ISZ-T13 (Note) • VGA over twisted-pairs • ADSL/HDSL drivers • Single ended to differential amplification • Transmission of analog signals in a noisy environment Pinouts EL5373 (24-PIN QSOP) TOP VIEW EL5173 (8-PIN SO, MSOP) TOP VIEW 8-Pin SO (Pb-free) 13” MDP0027 EL5173IY 8-Pin MSOP - MDP0043 EL5173IY-T7 8-Pin MSOP 7” MDP0043 1 IN+ OUT 8 EN 1 EL5173IY-T13 8-Pin MSOP 13” MDP0043 2 EN VS- 7 INP1 2 3 IN- VS+ 6 INN1 3 22 NC OUTB 5 REF1 4 21 VSP NC 5 20 VSN EL5173IYZ (Note) 8-Pin MSOP (Pb-free) - MDP0043 EL5173IYZ-T7 (Note) 8-Pin MSOP (Pb-free) 7” MDP0043 EL5173IYZ-T13 (Note) 8-Pin MSOP (Pb-free) 13” MDP0043 4 REF EL5373IU 24-Pin QSOP - MDP0040 EL5373IU-T7 24-Pin QSOP 7” MDP0040 INP2 6 EL5373IU-T13 24-Pin QSOP 13” MDP0040 INN2 7 EL5373IUZ (Note) 24-Pin QSOP (Pb-free) - MDP0040 REF2 8 EL5373IUZ-T7 (Note) 24-Pin QSOP (Pb-free) 7” MDP0040 EL5373IUZ-T13 (Note) 24-Pin QSOP (Pb-free) 13” MDP0040 1 INN3 11 REF3 12 24 OUT1 23 OUT1B 19 NC + - 18 OUT2 17 OUT2B 16 NC NC 9 INP3 10 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-020. + - + - 15 OUT3 14 OUT3B 13 NC CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. EL5173, EL5373 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 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. 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, RLD = 200Ω, CLD = 1pF, Unless Otherwise Specified DESCRIPTION CONDITIONS MIN TYP MAX UNIT AC PERFORMANCE BW -3dB Bandwidth 450 MHz BW ±0.1dB Bandwidth 60 MHz SR Slew Rate - EL5173 VOUT = 2VP-P, 20% to 80% 750 900 V/µs Slew Rate - EL5373 VOUT = 2VP-P, 20% to 80% 900 1100 V/µs TSTL Settling Time to 0.1% VOUT = 2VP-P 10 ns OS Overshoot VODP-P = 2V 10 % TOVR Output Overdrive Recovery Time 10 ns VREFBW (-3dB) VREF -3dB Bandwidth AV =1, CLD = 2.7pF 190 MHz VREFSR+ VREF Slew Rate - Rise VOUT = 2VP-P, 20% to 80% 200 V/µs VREFSR- VREF Slew Rate - Fall VOUT = 2VP-P, 20% to 80% 125 V/µs VN Input Voltage Noise f = 10kHz 25 nV/√Hz HD2 Second Harmonic Distortion VOUT = 2VP-P, 5MHz 84 dBc HD2 Second Harmonic Distortion VOUT = 2VP-P, 20MHz 71 dBc HD3 Third Harmonic Distortion VOUT = 2VP-P, 5MHz 62 dBc HD3 Third Harmonic Distortion VOUT = 2VP-P, 20MHz 53 dBc dG Differential Gain at 3.58MHz RLD = 300Ω, AV = 2 0.05 % dθ Differential Phase at 3.58MHz RLD = 300Ω, AV = 2 0.08 ° eS Channel Separation - for EL5373 only at 1MHz 90 dB INPUT CHARACTERISTICS VOS Input Referred Offset Voltage IIN Input Bias Current (VIN, VINB) ±3 ±30 mV EL5173 -21 -11 -5 µA EL5373 -21 -13 -5 µA 1 2.3 5 µA 1.97 1.99 2.01 V IREF INput Bias Current at REF Gain Gain Accuracy RIN Differential Input Resistance 150 kΩ CIN Differential Input Capacitance 1 pF DMIR Differential Mode Input Range ±2 ±2.3 V CMIR+ Common Mode Positive Input Range at VIN+, VIN- 3.1 3.4 V CMIR- Common Mode Negative Input Range at VIN+, VIN- VREFIN+ Reference Input - Positive 2 VIN = ±1V -4.5 VIN+ = VIN- = 0V 3.3 3.7 -4.2 V V FN7312.4 February 16, 2005 EL5173, EL5373 Electrical Specifications VS+ = +5V, VS- = -5V, TA = 25°C, VIN = 0V, RLD = 200Ω, CLD = 1pF, Unless Otherwise Specified (Continued) PARAMETER DESCRIPTION CONDITIONS VREFIN- Reference Input - Negative VREFOS Output Offset Relative to VREF CMRR Input Common Mode Rejection Ratio MIN TYP MAX UNIT -3.3 -3 V -100 50 +100 mV VIN = ±2.5V 60 80 dB RLD = 200Ω 3.3 3.67 V VIN+ = VIN- = 0V OUTPUT CHARACTERISTICS VOUT (EL5173) Positive Output Voltage Swing Negative Output Voltage Swing VOUT (EL5373) -3.3 RLD = 200Ω Positive Output Voltage Swing 3.7 Negative Output Voltage Swing IOUT(Max) ROUT 4 -3.7 Maximum Output Current -3 V V -3.4 V RL = 10Ω (EL5173) ±45 ±55 mA RL = 10Ω (EL5373) ±40 ±50 mA 60 mΩ Output Impedance SUPPLY VSUPPLY Supply Operating Range IS(ON) Power Supply Current - Per Channel VS+ to VS- IS(OFF)+ (EL5173) Positive Power Supply Current - Disabled IS(OFF)- (EL5173) 4.75 EN pin tied to 4.8V Negative Power Supply Current - Disabled IS(OFF)+ (EL5373) Positive Power Supply Current - Disabled IS(OFF)- (EL5373) Negative Power Supply Current - Disabled PSRR Power Supply Rejection Ratio EN pin tied to 4.8V VS from ±4.5V to ±5.5V 11 V 9 12 14 mA 60 80 100 µA -150 -120 -90 µA 0.5 2 10 µA -150 -120 -90 µA 60 73 dB ENABLE tEN Enable Time 100 ns tDS Disable Time 1.2 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 -5 V 60 -2.5 µA µA Pin Descriptions EL5173 EL5373 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 OUT-, OUT1B, 2B, 3B 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, note that on EL5173, this pin is also the REF pin Reference inputs, sets common-mode output voltage Inverting outputs Non-inverting outputs No connect; grounded for best crosstalk performance FN7312.4 February 16, 2005 Connection Diagrams EL5173 CL1 RS1 50Ω -5V RRT2 1 IN+ OUT 8 EN 2 EN VS- 7 INN 3 IN- VS+ 6 REF 4 REF INP 4 RS2 50Ω LOADP 50Ω RRT2 OUTB 5 RS3 50Ω +5V CL2 LOADN 50Ω EL5373 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 REF2 8 REF2 9 NC INP3 10 INP3 OUT2B 17 OUT3B 14 REF3 12 REF3 NC 13 RSR1 50Ω RSP2 50Ω RSN2 50Ω RSR2 50Ω RSP3 50Ω RSN3 50Ω RRT3 OUT3 15 11 INN3 RSN1 50Ω LD2B 50Ω NC 16 INN3 RSP1 50Ω LD2 50Ω RRT3B 50Ω RSR3 50Ω FN7312.4 February 16, 2005 -5V LD3 50Ω LD3B EL5173, EL5373 +5V EL5173, EL5373 Typical Performance Curves VS = ±5V, CLD = 1pF VS = ±5V, RLD = 200Ω 10 10 9 9 8 8 RLD = 500Ω 7 VODP-P = 200mV 6 GAIN (dB) GAIN (dB) 7 RLD = 1kΩ 5 4 3 6 5 RLD = 200Ω 4 3 VODP-P = 700mV 2 RLD = 100Ω 2 1 1 0 1M 10M 100M 0 100K 1G 10M 1M FREQUENCY (Hz) 100M 1G FREQUENCY (Hz) FIGURE 2. FREQUENCY RESPONSE vs RLD FIGURE 1. FREQUENCY RESPONSE VS = ±5V, RLD = 200Ω, VODP-P = 200mV 5 11 4 10 CLD = 16pF GAIN (dB) 8 3 GAIN (dB) 9 CLD = 5pF 7 6 4 0 -2 CLD = 0pF 3 -3 2 -4 1 1M 10M VREF = 200mVP-P 1 -1 CLD = 2.3pF 5 2 100M VREF = 1VP-P -5 1M 1G 10M 100M 1G FREQUENCY (Hz) FREQUENCY (Hz) FIGURE 4. FREQUENCY RESPONSE vs VREF FIGURE 3. SMALL SIGNAL FREQUENCY RESPONSE vs CLD 100Ω VINCM + - VODM VOCM 100Ω COMMON MODE REJECTION (dB) 0 -10 -20 PSRR (dB) -30 PSRR-40 -50 -60 PSRR+ -70 -80 -90 100K 1M 10M FREQUENCY (Hz) FIGURE 5. PSRR vs FREQUENCY 5 100M 0 -10 -20 -30 -40 VOCM/VINCM -50 -60 -70 VODM/VINCM -80 -90 100K 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 6. COMMON MODE REJECTION vs FREQUENCY FN7312.4 February 16, 2005 EL5173, EL5373 Typical Performance Curves (Continued) 100Ω VIN + - RT VOCM VODM R 100Ω 1000 VOLTAGE NOISE (nV/√Hz) 0 BALANCE ERROR (dB) -10 -20 -30 -40 VOCM/VODM -50 -60 100K 1M 10M 100M 100 10 10 1G 100 1K 10K 100K 1M 10M FREQENCY (Hz) FREQUENCY (Hz) FIGURE 8. INPUT VOLTAGE NOISE vs FREQUENCY FIGURE 7. DIFFERENTIAL MODE OUTPUT BALANCE ERROR vs FREQUENCY 460 -40 440 420 -50 CH3-->CH2 CH2-->CH1 -60 -70 BW (MHz) CHANNEL SEPARATION (dB) VODMP-P = 200mV, RLD = 200Ω -30 CH2-->CH3 -80 CH1-->CH2 -90 400 380 360 340 CH3-->CH1 -100 320 CH1-->CH3 -110 100K 1M 10M 100M 1G 300 4 5 6 FIGURE 9. CHANNEL SEPARATION vs FREQUENCY -40 VS = ±5V, RLD = 200Ω -45 11.8 HD3 (f=20MHz) DISTORTION (dB) -50 IS+ 11.7 IS (mA) 11 10 FIGURE 10. SMALL SIGNAL BANDWIDTH vs SUPPLY VOLTAGE 11.9 IS- 11.5 -55 HD3 (f=5MHz) -60 -65 -70 HD2 (f=20MHz) -75 HD2 (f=5MHz) -80 11.4 11.3 4 9 VS (V) FREQUENCY (Hz) 11.6 8 7 -85 -90 5 6 8 7 9 10 11 VS (V) FIGURE 11. SUPPLY CURRENT vs SUPPLY VOLTAGE 6 1 2 3 4 5 6 7 8 9 DIFFERENTIAL OUTPUT VOLTAGE (V) FIGURE 12. HARMONIC DISTORTION vs DIFFERENTIAL OUTPUT VOLTAGE FN7312.4 February 16, 2005 EL5173, EL5373 Typical Performance Curves -40 (Continued) VS = ±5V, VODMP-P = 2V VS = ±5V, RLD = 200Ω, VODMP-P = 2V -40 -45 -50 -50 DISTORTION (dB) DISTORTION (dB) HD3 (f = 20MHz) -60 HD3 (f -70 = 5M Hz ) HD2 (f = 20MHz) -80 HD3 -55 -60 HD 2 -65 -70 -75 -80 -90 HD2 (f = 5MHz) -100 100 200 300 400 500 600 700 -85 800 900 1000 -90 0 FIGURE 13. HARMONIC DISTORTION vs RLD 5 10 15 20 25 30 35 40 FREQUENCY (MHz) RLD (Ω) FIGURE 14. HARMONIC DISTORTION vs FREQUENCY 0.5V/DIV 100mV/DIV 20ns/DIV FIGURE 15. SMALL SIGNAL TRANSIENT RESPONSE 20ns/DIV FIGURE 16. LARGE SIGNAL TRANSIENT RESPONSE 0.5V/DIV 20ns/DIV FIGURE 17. VCOM TRANSIENT RESPONSE 7 FIGURE 18. ENABLED RESPONSE FN7312.4 February 16, 2005 EL5173, EL5373 Typical Performance Curves (Continued) JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD POWER DISSIPATION (W) 1.2 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 19. DISABLED RESPONSE POWER DISSIPATION (W) 1.4 FIGURE 20. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE 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 50 75 85 100 125 150 AMBIENT TEMPERATURE (°C) FIGURE 21. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE 8 FN7312.4 February 16, 2005 EL5173, EL5373 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 EL5173 and EL5373 are wide bandwidth, low power and single/differential ended to differential output amplifiers. They have a fixed gain of 2. The EL5173 is a single channel differential amplifier. The EL5373 is a triple channel differential amplifier. The EL5173 and EL5373 have a –3dB bandwidth of 450MHz while driving a 200Ω differential load. The EL5173 and EL5373 are available with a power down feature to reduce the power while the amplifiers are disabled. Input, Output and Supply Voltage Range The EL5173 and EL5373 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 3.7V. If the input common mode or differential mode signal is outside the above-specified ranges, it will cause the output signal distorted. 200Ω Driving Capacitive Loads and Cables The EL5173 and EL5373 can drive 16pF 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. 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 output of the EL5173 and EL5373 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. The EL5173 and EL5373 can be disabled and placed their outputs in a high impedance state. The turn off time is about 1.2µs and the turn on time is about 100ns. When disabled, the amplifier’s supply current is reduced to 40µA for IS+ and 2.5µA 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. Differential and Common Mode Gain Settings Output Drive Capability As shown at the simplified schematic, since the feedback resistors RF and the gain resistor are integrated with 200Ω and 400Ω, the EL5173 and EL5373 have a fixed gain of 2. The common mode gain is always one. The EL5173 and EL5373 have internal short circuit protection. Its typical short circuit current is ±55mA. If the output is shorted indefinitely, the power dissipation could easily increase such that the part will be destroyed. 9 FN7312.4 February 16, 2005 EL5173, EL5373 Maximum reliability is maintained if the output current never exceeds ±60mA. This limit is set by the design of the internal metal interconnect. Where: • VS = Total supply voltage • ISMAX = Maximum quiescent supply current per channel Power Dissipation With the high output drive capability of the EL5173 and EL5373 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. The maximum power dissipation allowed in a package is determined according to: T JMAX – T AMAX PD MAX = -------------------------------------------Θ JA Where: • TJMAX = Maximum junction temperature • 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: • ∆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. ∆V O PD = i × V S × I SMAX + V S × ------------ R LD Typical Applications Twisted pair cable driver 0Ω 50 50Ω EL5173/ EL5373 50 ZO = 100Ω 50Ω VFB VIN VINB EL5175/ EL5375 VOUT VREF FIGURE 22. TWISTED PAIR CABLE DRIVER 10 FN7312.4 February 16, 2005 EL5173, EL5373 SO Package Outline Drawing 11 FN7312.4 February 16, 2005 EL5173, EL5373 MSOP Package Outline Drawing 12 FN7312.4 February 16, 2005 EL5173, EL5373 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 FN7312.4 February 16, 2005