EL1516, EL1516A ® Data Sheet May 4, 2005 Dual Ultra Low Noise Amplifier Features The EL1516 is a dual, ultra low noise amplifier, ideally suited to line receiving applications in ADSL, VDSL, and home PNA designs. With low noise specification of just 1.3nV/√Hz and 1.5pA/√Hz, the EL1516 is perfect for the detection of very low amplitude signals. • EL2227 upgrade replacement The EL1516 features a -3dB bandwidth of 350MHz @ AV = -1 and is gain-of-2 stable. The EL1516 also affords minimal power dissipation with a supply current of just 5.5mA per amplifier. The amplifier can be powered from supplies ranging from 5V to 12V. • Bandwidth (-3dB) of 250MHz @ AV = +2 The EL1516A incorporates an enable and disable function to reduce the supply current to 5nA typical per amplifier, allowing the EN pins to float or apply a low logic level will enable the amplifiers. • Voltage noise of only 1.3nV/√Hz • Current noise of only 1.5pA/√Hz • Bandwidth (-3dB) of 350MHz @ AV = -1 • Gain-of-2 stable • Just 5.5mA per amplifier • 100mA IOUT • Fast enable/disable (EL1516A only) • 5V to 12V operation • Pb-free available (RoHS compliant) The EL1516 is available in space-saving 8-pin MSOP and industry-standard 8-pin SO packages and the EL1516A is available in a 10-pin MSOP package. All are specified for operation over the -40°C to +85°C temperature range. Applications Pinouts • Home PNA receivers EL1516 (8-PIN SO, MSOP) TOP VIEW VOUTA 1 VINA- 2 8 VS+ 7 VOUTB + VINA+ 3 6 VINB+ VS- 4 FN7328.0 • ADSL receivers • VDSL receivers • Ultrasound input amplifiers • Wideband instrumentation • Communications equipment • AGC & PLL active filters • Wideband sensors 5 VINB+ EL1516A (10-PIN MSOP) TOP VIEW 10 VINA- VINA+ 1 ENA 2 9 VOUTA VS- 3 8 VS+ ENB 4 7 VOUTB 6 VINB- VINB+ 5 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. 2005. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. EL1516, EL1516A Ordering Information PART NUMBER PACKAGE TAPE & REEL PKG. DWG. # EL1516IY 8-Pin MSOP - MDP0043 EL1516IY-T13 8-Pin MSOP 13” MDP0043 EL1516IY-T7 8-Pin MSOP 7” MDP0043 EL1516IYZ (See Note) 8-Pin MSOP (Pb-free) - MDP0043 EL1516IYZ-T13 (See Note) 8-Pin MSOP (Pb-free) 13” MDP0043 EL1516IYZ-T7 (See Note) 8-Pin MSOP (Pb-free) 7” MDP0043 EL1516IS 8-Pin SO - MDP0027 EL1516IS-T13 8-Pin SO 13” MDP0027 EL1516IS-T7 8-Pin SO 7” MDP0027 EL1516ISZ (See Note) 8-Pin SO (Pb-free) - MDP0027 EL1516ISZ-T13 (See Note) 8-Pin SO (Pb-free) 13” MDP0027 EL1516ISZ-T7 (See Note) 8-Pin SO (Pb-free) 7” MDP0027 EL1516AIY 10-Pin MSOP - MDP0043 EL1516AIY-T13 10-Pin MSOP 13” MDP0043 EL1516AIY-T7 10-Pin MSOP 7” MDP0043 EL1516AIYZ (See Note) 10-Pin MSOP (Pb-free) - MDP0043 EL1516AIYZT13 (See Note) 10-Pin MSOP (Pb-free) 13” MDP0043 EL1516AIYZ-T7 (See Note) 10-Pin MSOP (Pb-free) 7” MDP0043 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. 2 FN7328.0 May 4, 2005 EL1516, EL1516A Absolute Maximum Ratings (TA = 25°C) Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . . .14V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.3V, VS +0.3V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 40mA Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C 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+ = +2.5V, VS- = -2.5V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, VCM = 0V, and TA = 25°C, unless otherwise specified. DESCRIPTION CONDITIONS MIN TYP MAX UNIT -0.2 +3 mV INPUT CHARACTERISTICS VOS Input Offset Voltage TCVOS Average Offset Voltage Drift IB Input Bias Current IOS VCM = 0V -0.3 VCM = 0V µV/°C 6.5 9 µA Input Offset Current 50 500 nA RIN Input Impedance 2 MΩ CIN Input Capacitance 1.6 pF CMIR Common-Mode Input Range CMRR Common-Mode Rejection Ratio for VIN from -4.7V to 5.4V 85 105 dB AVOL Open-Loop Gain VO = ±1.25V 70 75 dB en Voltage Noise f = 100kHz 1.24 nV/√Hz in Current Noise f = 100kHz 1.5 pA/√Hz RL = 500Ω 1.45 1.35 V RL = 150Ω 1.37 1.25 V -1.3 +1.7 V OUTPUT CHARACTERISTICS VOL VOH ISC Output Swing Low Output Swing High Short Circuit Current RL = 500Ω 1.5 1.6 V RL = 150Ω 1.4 1.5 V RL = 10Ω 60 75 mA 75 80 dB POWER SUPPLY PERFORMANCE PSRR Power Supply Rejection Ratio VS is moved from ±5.4V to ±6.6V IS ON Supply Current Enable (Per Amplifier) No load 5.7 7 mA IS OFF Supply Current Disable (Per Amplifier) (EL1516A) I+ (DIS) 2 5 µA TC IS IS Temperature Coefficient VS Operating Range I- (DIS) -19 -16 µA 32 µA/°C 5 12 V DYNAMIC PERFORMANCE SR Slew Rate VO = ±1.25V square wave, measured 25%75% TC SR SR Temperature Coefficient tS Settling to 0.1% (AV = +2) BW1 BW2 110 V/µs 0.5 V/µs/°C AV = +2, VO = ±1V 25 ns -3dB Bandwidth AV = -1, RF = 100Ω 320 MHz -3dB Bandwidth AV = +2, RF = 100Ω 200 MHz 3 80 FN7328.0 May 4, 2005 EL1516, EL1516A Electrical Specifications PARAMETER VS+ = +2.5V, VS- = -2.5V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, VCM = 0V, and TA = 25°C, unless otherwise specified. (Continued) DESCRIPTION CONDITIONS MIN TYP MAX UNIT HD2 2nd Harmonic Distortion f = 1MHz, VO = 2VP-P, RL = 100Ω 90 dBc HD3 3rd Harmonic Distortion f = 1MHz, VO = 2VP-P, RL = 100Ω 95 dBc ENABLE (EL1516AIY ONLY) tEN Enable Time 125 ns tDIS Disable Time 336 ns IIHEN EN Pin Input High Current EN = VS+ 18 µA IILEN EN Pin Input Low Current EN = VS- 10 nA VIHEN EN Pin Input High Voltage for Powerdown VS+ -1 V VIHEN EN Pin Input Low Voltage for Power-up VS- +3 V Electrical Specifications PARAMETER VS+ = +6V, VS- = -6V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, VCM = 0V, and TA = 25°C, unless otherwise specified. DESCRIPTION CONDITIONS MIN TYP MAX UNIT 0.1 3 mV INPUT CHARACTERISTICS VOS Input Offset Voltage TCVOS Average Offset Voltage Drift IB Input Bias Current IOS VCM = 0V -0.3 VCM = 0V µV/°C 6.5 9 µA Input Offset Current 50 500 nA RIN Input Impedance 12 MΩ CIN Input Capacitance 1.6 pF CMIR Common-Mode Input Range CMRR Common-Mode Rejection Ratio for VIN from -4.7V to 5.4V 90 110 dB AVOL Open-Loop Gain VO = ±2.5V 75 80 dB en Voltage Noise f = 100kHz 1.24 nV/√Hz in Current Noise f = 100kHz 1.5 pA/√Hz RL = 500Ω -4.8 -4.7 V RL = 150Ω -4.6 -4.5 V -4.5 +5.5 V OUTPUT CHARACTERISTICS VOL VOH ISC Output Swing Low Output Swing High Short Circuit Current RL = 500Ω 4.8 4.9 V RL = 150Ω 4.5 4.7 V RL = 10Ω 110 160 mA 75 85 dB POWER SUPPLY PERFORMANCE PSRR Power Supply Rejection Ratio VS is moved from ±5.4V to ±6.6V IS ON Supply Current Enable (Per Amplifier) No load 5.8 7 mA IS OFF Supply Current Disable (Per Amplifier) (EL1516A) I+ (DIS) 2 5 µA TC IS IS Temperature Coefficient VS Operating Range 4 I- (DIS) -19 5 -16 µA 32 µA/°C 12 V FN7328.0 May 4, 2005 EL1516, EL1516A Electrical Specifications PARAMETER VS+ = +6V, VS- = -6V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, VCM = 0V, and TA = 25°C, unless otherwise specified. (Continued) DESCRIPTION CONDITIONS MIN TYP MAX UNIT VO = ±2.5V square wave, measured 25%-75% 90 128 V/µs 0.5 V/µs/°C DYNAMIC PERFORMANCE SR Slew Rate TC SR SR Temperature Coefficient tS Settling to 0.1% (AV = +2) AV = +2, VO = ±1V 20 ns BW1 -3dB Bandwidth AV = -1, RF = 100Ω 350 MHz BW2 -3dB Bandwidth AV = +2, RF = 100Ω 250 MHz HD2 2nd Harmonic Distortion f = 1MHz, VO = 2VP-P, RL = 500Ω 125 dBc f = 1MHz, VO = 2VP-P, RL = 150Ω 117 dBc f = 1MHz, VO = 2VP-P, RL = 500Ω 115 dBc f = 1MHz, VO = 2VP-P, RL = 150Ω 110 dBc HD3 3rd Harmonic Distortion ENABLE (EL1516AIY ONLY) tEN Enable Time 125 ns tDIS Disable Time 336 ns IIHEN EN Pin Input High Current EN = VS+ 17 20 µA IILEN EN Pin Input Low Current EN = VS- 7 20 nA VIHEN EN Pin Input High Voltage for Powerdown VS+ -1 V VIHEN EN Pin Input Low Voltage for Power-up VS- +3 V Typical Performance Curves 4 VS=±6V AV=+2 2 RL=500Ω 0 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 4 RF=100Ω RF=348Ω -2 RF=1kΩ RF=619Ω -4 -6 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 1. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS RF 5 VS=±6V RF=348Ω 2 RL=500Ω 0 -2 AV=10 AV=5 AV=2 -4 -6 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 2. NON-INVERTING FREQUENCY RESPONSE (GAIN) FN7328.0 May 4, 2005 EL1516, EL1516A Typical Performance Curves (Continued) 4 VS=±6V AV=+2 2 RL=500Ω RF=619Ω CL=22pF CL=12pF NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 4 CL=4.7pF 0 -2 CL=1pF CL=0pF -4 -6 1M 10M 100M VS=±6V AV=+2 2 RF=619Ω 0 4 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) VS=±6V AV=+2 2 RL=500Ω RF=348Ω VIN=100mVPP VIN=20mVPP 0 VIN=500mVPP VIN=1VPP VIN=2VPP 10M 100M VS=±6V AV=-1 2 RL=500Ω RF=420Ω -2 RF=620Ω -4 RF=1kΩ -6 1M 1G 10M 100M 1G FREQUENCY (Hz) FIGURE 5. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS INPUT SIGNAL LEVELS FIGURE 6. INVERTING FREQUENCY RESPONSE FOR VARIOUS RF 4 4 VS=±6V RF=420Ω 2 RL=500Ω 0 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) RF=100Ω 0 FREQUENCY (Hz) AV=-1 AV=-2 -2 1G FIGURE 4. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS RL 4 -6 1M 100M 10M FREQUENCY (Hz) FIGURE 3. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS CL -4 RL=50Ω -4 FREQUENCY (Hz) -2 RL=100Ω -2 -6 1M 1G RL=500Ω AV=-10 -4 AV=-5 -6 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 7. INVERTING FREQUENCY RESPONSE (GAIN) 6 VS=±6V AV=-1 2 RL=500Ω RF=420Ω CL=18pF CL=12pF 0 -2 CL=2pF -4 -6 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 8. INVERTING FREQUENCY RESPONSE FOR VARIOUS CL FN7328.0 May 4, 2005 EL1516, EL1516A Typical Performance Curves (Continued) 5 VS=±6V AV=-1 2 RL=500Ω RF=420Ω VIN=280mVPP 0 -2 -4 VIN=20mVPP VIN=1.4VPP VIN=2.8VPP -6 1M 10M 100M NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 4 VS=±2.5V AV=-1 3 RL=500Ω 1 -1 RF=619Ω RF=1kΩ -3 -5 100K 1G 1M FREQUENCY (Hz) NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 1G 5 VS=±2.5V RF=422Ω 3 RL=500Ω AV=-2 1 -1 AV=-1 AV=-5 -3 AV=-10 1M 10M 100M VS=±2.5V AV=-1 3 RF=420Ω 1 RL=50Ω -3 -5 100K 1G RL=500Ω -1 RL=100Ω 1M 10M 100M 1G FREQUENCY (Hz) FREQUENCY (Hz) FIGURE 11. INVERTING FREQUENCY RESPONSE FOR VARIOUS AV FIGURE 12. INVERTING FREQUENCY RESPONSE FOR VARIOUS RL 5 5 VS=±2.5V AV=-1 3 RF=420Ω RL=500Ω CL=18pF NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 100M FIGURE 10. INVERTING FREQUENCY RESPONSE FOR VARIOUS RF 5 CL=15pF 1 CL=12pF -1 CL=10pF CL=0pF -3 -5 100K 10M FREQUENCY (Hz) FIGURE 9. INVERTING FREQUENCY RESPONSE FOR VARIOUS SIGNAL LEVELS -5 100K RF=100Ω RF=422Ω 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 13. INVERTING FREQUENCY RESPONSE FOR VARIOUS CL 7 VS=±2.55V AV=-1 3 RF=420Ω RL=500Ω VIN=280mVP-P 1 VIN=20mVP-P -1 -3 -5 100K VIN=1.4VP-P VIN=2.24VP-P 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 14. INVERTING FREQUENCY RESPONSE FOR VARIOUS INPUT SIGNAL LEVELS FN7328.0 May 4, 2005 EL1516, EL1516A Typical Performance Curves (Continued) 5 VS=±2.5V AV=+2 3 RL=500Ω 1 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 5 RF=348Ω -1 RF=100Ω RF=619Ω RL=1kΩ -3 -5 100K 1M 10M 100M VS=±2.5V RF=348Ω 3 RL=500Ω 1 AV=+2 -1 AV=+5 -3 AV=+10 -5 100K 1G 1M FREQUENCY (Hz) FIGURE 15. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS RF 1 CL=10pF CL=27pF -1 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) CL=18pF CL=3.3pF CL=0pF -3 1M 10M 100M VS=±2.5V AV=+2 3 RL=619Ω 1 RF=100Ω -1 RF=500Ω -3 RL=50Ω -5 100K 1G 1M FIGURE 17. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS CL VIN=20mVP-P VIN=100mVP-P VIN=200mVP-P VIN=500mVP-P 10M 100M 1G FREQUENCY (Hz) FIGURE 19. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS INPUT SIGNAL LEVELS 8 -50 -60 -70 2ND HD -80 3RD HD -90 VIN=1VP-P 1M 1G VS=±6V RF=RG=619Ω RL=100Ω -40 DISTORTION (dB) NORMALIZED GAIN (dB) -30 VS=±2.55V RF=348Ω 3 RL=500Ω -5 100K 100M FIGURE 18. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS RL 5 1 10M FREQUENCY (Hz) FREQUENCY (Hz) -3 1G 5 VS=±2.5V AV=+2 3 RF=619Ω RL=500Ω -1 100M FIGURE 16. NON-INVERTING FREQUENCY RESPONSE FOR VARIOUS AV 5 -5 100K 10M FREQUENCY (Hz) -100 0 2 4 6 8 10 OUTPUT SWING (VPP) FIGURE 20. 1MHz 2ND AND 3RD HARMONIC DISTORTION vs OUTPUT SWING FN7328.0 May 4, 2005 EL1516, EL1516A Typical Performance Curves (Continued) -20 VO=2VPP -75 VS=±6V RF=RG=620Ω RL=500Ω -80 HARMONIC DISTORTION (dBc) THD + NOISE (dBc) -70 -85 -90 -95 -100 -105 10K 100K VS=±2.5V -30 AV=+2 RF=RG=619Ω -40 RL=100Ω VOUT=2VP-P -50 -60 -70 THD -80 2ND HD -90 3RD HD -100 500K 200K FREQUENCY (Hz) FIGURE 21. THD + NOISE vs FREQUENCY -40 10 THD (dBc) SUPPLY CURRENT (mA) 12 THD-FIN=10MHz -60 -70 -80 VS=±2.5V AV=+2 RF=RG=619Ω RL=500Ω THD-FIN=1MHz -90 -100 0.2 0.7 1.2 1.7 20M 2.7 2.2 8 6 4 2 0 3.2 0 1 OUTPUT VOLTAGE (VP-P) 2 3 5 4 6 SUPPLY VOLTAGE (±V) FIGURE 23. THD vs OUTPUT VOLTAGE FIGURE 24. SUPPLY CURRENT vs SUPPLY VOLTAGE -10 250 VS=±6V AV=+2 -30 RF=620Ω RL=500Ω AV=+2 200 150 GAIN (dB) 3dB BANDWIDTH (MHz) 10M FIGURE 22. HARMONIC DISTORTION vs FREQUENCY -30 -50 1M FUNDAMENTAL FREQUENCY (Hz) AV=-1 100 AV=-2 AV=+5 50 AV=-5 AV=-10 2 3 4 5 6 SUPPLY VOLTAGE (±V) FIGURE 25. 3dB BANDWIDTH vs SUPPLY VOLTAGE 9 BaaaA -70 AaaaB -90 AV=+10 0 -50 -110 100K 1M 10M 100M 1G FREQUENCY (Hz) FIGURE 26. CHANNEL-TO-CHANNEL ISOLATION vs FREQUENCY FN7328.0 May 4, 2005 EL1516, EL1516A Typical Performance Curves -30 (Continued) -10 VS=±6V RL=1kΩ VS=±6V AV=+1 -30 RL=500Ω PSRR (dB) CMRR (dB) -50 -70 -90 -110 -50 PSRR+ -70 PSRR- -90 -130 100K 1M 10M 100M -110 100K 1G 1M FIGURE 27. CMRR 1G 10K 100K VOLTAGE NOISE (nV/√Hz) 12 10 1 -0.1 0.01 10K 100K 1M 10M 100M 10 8 6 4 2 0 10 100 1K FREQUENCY (Hz) FREQUENCY (Hz) FIGURE 29. CLOSED LOOP OUTPUT IMPEDANCE vs FREQUENCY FIGURE 30. VOLTAGE NOISE 0.07 DIFF GAIN (%), DIFF PHASE (°) 100M FIGURE 28. PSRR 100 OUTPUT IMPEDANCE (Ω) 10M FREQUENCY (Hz) FREQUENCY (Hz) VS=±6V 0.06 AV=2 RF=620Ω VS=±6V RL=500Ω RF=620Ω DIFF GAIN 0.05 0.04 DIFF PHASE 0.5V/DIV 0.03 0.02 0.01 0 1 2 3 4 100ns/DIV NUMBER OF 150Ω LOADS FIGURE 31. DIFFERENTIAL GAIN/PHASE 10 FIGURE 32. LARGE SIGNAL STEP RESPONSE FN7328.0 May 4, 2005 EL1516, EL1516A Typical Performance Curves (Continued) VS=±2.5V RL=500Ω RF=620Ω 0.5V/DIV VS=±6V RL=500Ω RF=620Ω 20mV/DIV 100ns/DIV 100ns/DIV FIGURE 33. LARGE SIGNAL STEP RESPONSE FIGURE 34. SMALL SIGNAL STEP RESPONSE 10 VS=±2.5V RL=500Ω RF=620Ω 9 IS (mA) 8 20mV/DIV 7 6 5 4 3 2 -40 -20 100ns/DIV 0 20 40 60 80 100 120 140 150 DIE TEMPERATURE (°C) FIGURE 35. SMALL SIGNAL STEP RESPONSE FIGURE 36. SUPPLY CURRENT vs TEMPERATURE 200 450 SLEW RATE (±V/µs) -3dB BANDWIDTH (MHz) 500 400 350 300 120 80 40 250 200 -40 -20 AV=+2V VO=2VPP 160 RF=200Ω RL=500Ω 0 20 40 60 80 100 120 140 150 DIE TEMPERATURE (°C) FIGURE 37. -3dB BANDWIDTH vs TEMPERATURE 11 0 -40 -20 0 20 40 60 80 100 120 140 150 DIE TEMPERATURE (°C) FIGURE 38. SLEW RATE vs TEMPERATURE FN7328.0 May 4, 2005 EL1516, EL1516A Typical Performance Curves 0 VS=±6V 50mVOPP -50 26 -100 22 VOS (µV) SETTLING TIME (ns) 30 (Continued) 18 -150 -200 -250 -300 14 -350 10 -40 -20 0 20 40 60 -400 -40 -20 80 100 120 140 150 0 DIE TEMPERATURE (°C) FIGURE 39. 0.1% SETTLING TIME vs TEMPERATURE 1.2 POWER DISSIPATION (W) IBIAS (µA) 7 6 5 0 20 40 60 80 100 120 140 150 60 80 100 120 140 150 JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 1 781mW 0.8 SO8 θJA=160°C/W 607mW 0.6 MSOP8/10 θJA=206°C/W 0.4 0.2 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (°C) DIE TEMPERATURE (°C) FIGURE 41. IBIAS CURRENT vs TEMPERATURE 1.8 40 FIGURE 40. VOS vs TEMPERATURE 8 4 -40 -20 20 DIE TEMPERATURE (°C) FIGURE 42. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD POWER DISSIPATION (W) 1.6 1.4 1.2 1.136W SO8 θJA=110°C/W 1 1.087W 0.8 MSOP8/10 θJA=115°C/W 0.6 0.4 0.2 0 0 25 50 75 85 100 125 150 AMBIENT TEMPERATURE (°C) FIGURE 43. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE 12 FN7328.0 May 4, 2005 EL1516, EL1516A Pin Descriptions EL1516 (8-PIN SO & 8-PIN MSOP) EL1516A (10-PIN MSOP) PIN NAME PIN FUNCTION 1 9 VOUTA Output EQUIVALENT CIRCUIT VS+ VOUT CIRCUIT 1 2 10 VINA- Input VS+ VIN+ VIN- VSCIRCUIT 2 3 1 VINA+ Input Reference Circuit 2 4 3 VS- Supply 5 5 VINB+ Input 6 6 VINB- Input Reference Circuit 2 7 7 VOUTB Output Reference Circuit 1 8 8 VS+ Supply 2, 4 ENA, ENB Enable VS+ EN 570K VSCIRCUIT 3 13 FN7328.0 May 4, 2005 EL1516, EL1516A Applications Information EL1516 to remain in the safe operating area. These parameters are related as follows: Product Description The EL1516 is a dual voltage feedback operational amplifier designed especially for DMT ADSL and other applications requiring very low voltage and current noise. It also features low distortion while drawing moderately low supply current. The EL1516 uses a classical voltage-feedback topology which allows it to be used in a variety of applications where current-feedback amplifiers are not appropriate because of restrictions placed upon the feedback element used with the amplifier. The conventional topology of the EL1516 allows, for example, a capacitor to be placed in the feedback path, making it an excellent choice for applications such as active filters, sample-and-holds, or integrators. The low noise EL1516 amplifier is specifically designed for the dual differential receiver amplifier function with ADSL transceiver hybrids as well as other low-noise amplifier applications. A typical ADSL CPE line interface circuit is shown in Figure 44. The EL1516 is used in receiving DMT down stream signal. With careful transceiver hybrid design and the EL1516 1.4nV/√Hz voltage noise and 1.5pA/√Hz current noise performance, -140dBm/Hz system background noise performance can be easily achieved. + - ROUT LINE + RF RG ZLINE RF ROUT + RF RECEIVE OUT + RECEIVE OUT - RECEIVE AMPLIFIERS + + RF where: • PDMAXTOTAL is the sum of the maximum power dissipation of each amplifier in the package (PDMAX) • PDMAX for each amplifier can be calculated as follows: V OUTMAX PDMAX = 2 × V S × I SMAX + ( V S – V OUTMAX ) × ---------------------------R L where: • TMAX = Maximum ambient temperature ADSL CPE Applications DRIVER INPUT T JMAX = T MAX + ( θ JA × PD MAXTOTAL ) LINE - • θJA = Thermal resistance of the package • PDMAX = Maximum power dissipation of 1 amplifier • VS = Supply voltage • IMAX = Maximum supply current of 1 amplifier • VOUTMAX = Maximum output voltage swing of the application • RL = Load resistance To serve as a guide for the user, we can calculate maximum allowable supply voltages for the example of the video cabledriver below since we know that TJMAX = 150°C, TMAX = 75°C, ISMAX = 7.7mA, and the package θJAs are shown in Table 1. If we assume (for this example) that we are driving a back-terminated video cable, then the maximum average value (over duty-cycle) of VOUTMAX is 1.4V, and RL = 150Ω, giving the results seen in Table 1. TABLE 1. R RIN θJA EL1516IS SO8 110°C/W 0.406W @ 85°C EL1516IY MSOP8 115°C/W 0.400W @ 85°C EL1516AIY MSOP10 115°C/W 0.400W @ 85°C R RIN FIGURE 44. TYPICAL LINE INTERFACE CONNECTION MAX PDISS @ TMAX PACKAGE PART MAX VS Power Dissipation With the wide power supply range and large output drive capability of the EL1516, it is possible to exceed the 150°C maximum junction temperatures under certain load and power supply conditions. It is therefore important to calculate the maximum junction temperature (TJMAX) for all applications to determine if power supply voltages, load conditions, or package type need to be modified for the 14 Single-Supply Operation The EL1516 has been designed to have a wide input and output voltage range. This design also makes the EL1516 an excellent choice for single-supply operation. Using a single positive supply, the lower input voltage range is within 1.2V of ground (RL = 500Ω), and the lower output voltage range is within 875mV of ground. Upper input voltage range reaches 3.6V, and output voltage range reaches 3.8V with a 5V supply and RL = 500Ω. This results in a 2.625V output swing on a single 5V supply. This wide output voltage range also FN7328.0 May 4, 2005 EL1516, EL1516A allows single-supply operation with a supply voltage as high as 12V. output drive capability makes the EL1516 an ideal choice for RF, IF and video applications. Gain-Bandwidth Product and the -3dB Bandwidth Printed-Circuit Layout The EL1516 has a gain-bandwidth product of 300MHz while using only 6mA of supply current per amplifier. For gains greater than 2, their closed-loop -3dB bandwidth is approximately equal to the gain-bandwidth product divided by the noise gain of the circuit. For gains less than 2, higherorder poles in the amplifiers' transfer function contribute to even higher closed loop bandwidths. For example, the EL1516 has a -3dB bandwidth of 350MHz at a gain of +2, dropping to 80MHz at a gain of +5. It is important to note that the EL1516 has been designed so that this “extra” bandwidth in low-gain applications does not come at the expense of stability. As seen in the typical performance curves, the EL1516 in a gain of +2 only exhibits 0.5dB of peaking with a 1000Ω load. The EL1516 is well behaved, and easy to apply in most applications. However, a few simple techniques will help assure rapid, high quality results. As with any high-frequency device, good PCB layout is necessary for optimum performance. Ground-plane construction is highly recommended, as is good power supply bypassing. A 0.1µF ceramic capacitor is recommended for bypassing both supplies. Lead lengths should be as short as possible, and bypass capacitors should be as close to the device pins as possible. For good AC performance, parasitic capacitances should be kept to a minimum at both inputs and at the output. Resistor values should be kept under 5kΩ because of the RC time constants associated with the parasitic capacitance. Metal-film and carbon resistors are both acceptable, use of wire-wound resistors is not recommended because of their parasitic inductance. Similarly, capacitors should be low-inductance for best performance. Output Drive Capability The EL1516 has been designed to drive low impedance loads. It can easily drive 6VPP into a 100Ω load. This high MSOP Package Outline Drawing 15 FN7328.0 May 4, 2005 EL1516, EL1516A SO 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 16 FN7328.0 May 4, 2005