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| (R) ISL28158, ISL28258 Data Sheet February 11, 2008 FN6377.2 34A Micro-power Single and Dual Precision Rail-to-Rail Input-Output (RRIO) Low Input Bias Current Op Amps The ISL28158 and ISL28258 are micro-power precision operational amplifiers optimized for single supply operation at 5.5V and can operate down to 2.4V. These devices feature an Input Range Enhancement Circuit (IREC), which enables them to maintain CMRR performance for input voltages greater than the positive supply. The input signal is capable of swinging 0.25V above the positive supply and to 100mV below the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail. The ISL28158 and ISL28258 draw minimal supply current while meeting excellent DC-accuracy noise and output drive specifications. Competing devices seriously degrade these parameters to achieve micro-power supply current. Offset current, voltage and current noise, slew rate, and gain bandwidth product are all two to ten times better than on previous micro-power op amps. The 1/f corner of the voltage noise spectrum is at 100Hz. This results in low frequency noise performance, which can only be found on devices with an order of magnitude higher supply current. ISL28158 and ISL28258 can be operated from one lithium cell or two Ni-Cd batteries. The input range includes both positive and negative rail. The output swings to both rails. Features * 34A typical supply current * 300V maximum offset voltage (8 Ld SOIC) * 1pA typical input bias current * 200kHz gain bandwidth product * 2.4V to 5.5V single supply voltage range * Rail-to-rail input and output * Enable pin (ISL28158 only) * Pb-free (RoHS compliant) Applications * Battery- or solar-powered systems * 4mA to 20mA current loops * Handheld consumer products * Medical devices * Sensor amplifiers * ADC buffers * DAC output amplifiers Ordering Information PART NUMBER (Note) ISL28158FHZ-T7* ISL28158FHZ-T7A* PART MARKING GABW GABW 28158 FBZ 28158 FBZ 28258 FBZ 28258 FBZ 8258Z 8258Z PACKAGE (Pb-free) 6 Ld SOT-23 6 Ld SOT-23 8 Ld SOIC 8 Ld SOIC 8 Ld SOIC 8 Ld SOIC 8 Ld MSOP 8 Ld MSOP PKG. DWG. # MDP0038 MDP0038 MDP0027 MDP0027 MDP0027 MDP0027 MDP0043 MDP0043 Pinouts ISL28158 (6 LD SOT-23) TOP VIEW OUT 1 V- 2 IN+ 3 6 V+ 5 EN 4 INNC 1 IN- 2 IN+ 3 V- 4 + ISL28158 (8 LD SOIC) TOP VIEW 8 EN 7 V+ 6 OUT 5 NC ISL28158FBZ ISL28158FBZ-T7* Coming Soon ISL28258FBZ Coming Soon ISL28258FBZ-T7* Coming Soon ISL28258FUZ Coming Soon ISL28258FUZ-T7* +- ISL28258 (8 LD SOIC) TOP VIEW OUT_A 1 IN-_A 2 IN+_A 3 V- 4 -+ +8 V+ 7 OUT_B 6 IN-_B 5 IN+_B OUT_A 1 IN-_A 2 IN+_A 3 V- 4 ISL28258 (8 LD MSOP) TOP VIEW 8 V+ -+ +7 OUT_B 6 IN-_B 5 IN+_B *Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is 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. 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. 2007, 2008. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL28158, ISL28258 Absolute Maximum Ratings (TA = +25C) Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.75V Supply Turn On Voltage Slew Rate . . . . . . . . . . . . . . . . . . . . . 1V/s Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.5V to V+ +0.5V ESD Rating Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3kV Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300V Thermal Information Thermal Resistance JA (C/W) 6 Ld SOT-23 Package . . . . . . . . . . . . . . . . . . . . . . . 230 8 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . 110 8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . 115 Output Short-Circuit Duration . . . . . . . . . . . . . . . . . . . . . . .Indefinite Ambient Operating Temperature Range . . . . . . . . .-40C to +125C Storage Temperature Range . . . . . . . . . . . . . . . . . .-65C to +150C Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . +125C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. 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 V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open, TA = +25C unless otherwise specified. Boldface limits apply over the operating temperature range, -40C to +125C. Temperature data established by characterization. DESCRIPTION CONDITIONS MIN (Note 1) TYP MAX (Note 1) UNIT PARAMETER DC SPECIFICATIONS VOS Input Offset Voltage 8 Ld SOIC 6 Ld SOT-23 -300 -650 -550 -750 3.1 5 0.3 300 650 550 750 V V V/C V OS --------------T IOS IB VCM CMRR PSRR AVOL Input Offset Voltage vs Temperature Input Offset Current TA = -40C to +85C Input Bias Current TA = -40C to +85C Common-Mode Voltage Range Common-Mode Rejection Ratio Power Supply Rejection Ratio Large Signal Voltage Gain Guaranteed by CMRR VCM = 0V to 5V V+ = 2.4V to 5.5V VO = 0.5V to 4.5V, RL = 100k to VCM VO = 0.5V to 4.5V, RL = 1k to VCM -35 -80 -30 -80 0 75 70 80 75 100 75 5 1 35 80 30 80 5 pA pA V dB dB V/mV V/mV 98 98 220 45 5.3 135 6 20 150 250 VOUT Maximum Output Voltage Swing Output low, RL = 100k to VCM Output low, RL = 1k to VCM Output high, RL = 100k to VCM Output high, RL = 1k to VCM 4.995 4.993 4.84 4.77 26 15 mV mV V V 4.996 4.874 34 20 43 55 IS,ON Quiescent Supply Current, Enabled V+ = 5V V+ = 2.4V A A 2 FN6377.2 February 11, 2008 ISL28158, ISL28258 Electrical Specifications V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open, TA = +25C unless otherwise specified. Boldface limits apply over the operating temperature range, -40C to +125C. Temperature data established by characterization. (Continued) DESCRIPTION Quiescent Supply Current, Disabled Short-Circuit Output Source Current Short-Circuit Output Sink Current Supply Operating Range EN Pin High Level EN Pin Low Level EN Pin Input High Current EN Pin Input Low Current VEN = V+ VEN = V1 12 RL = 10 to VCM RL = 10 to VCM V+ to V27 20 22 15 2.4 2 0.8 1.5 1.6 25 30 CONDITIONS MIN (Note 1) TYP 10 30 25 5.5 MAX (Note 1) 14 19 UNIT A mA mA V V V A nA PARAMETER IS,OFF IO+ IOVSUPPLY VENH VENL IENH IENL AC SPECIFICATONS GBW Unity Gain Bandwidth eN Gain Bandwidth Product -3dB Bandwidth Input Noise Voltage Peak-to-Peak Input Noise Voltage Density iN CMRR @ 60Hz PSRR+ @ 120Hz PSRR- @ 120Hz Input Noise Current Density Input Common Mode Rejection Ratio Power Supply Rejection Ratio (V+) Power Supply Rejection Ratio (V-) AV = 100, RF = 100k, RG = 1k, RL = 10k to VCM AV =1, RF = 0, VOUT = 10mVP-P f = 0.1Hz to 10Hz fO = 1kHz fO = 10kHz VCM = 1VP-P, RL = 10k to VCM V+, V- = 1.2V and 2.5V, VSOURCE = 1VP-P, RL = 10k to VCM V+, V- = 1.2V and 2.5V VSOURCE = 1VP-P, RL = 10k to VCM 200 420 1.4 64 0.19 -70 -64 -85 kHz kHz VP-P nV/Hz pA/Hz dB dB dB TRANSIENT RESPONSE SR tr, tf, Large Signal Slew Rate Rise Time, 10% to 90% VOUT Fall Time, 90% to 10% VOUT tr, tf, Small Signal Rise Time, 10% to 90% VOUT Fall Time, 90% to 10% VOUT tEN AV = +2, VOUT = 1VP-P, Rg = Rf = 10k RL = 10k to VCM AV = +2, VOUT = 1VP-P, Rg = Rf = 10k RL = 10k to VCM AV = +2, VOUT = 10mVP-P, Rg = Rf = RL = 10k to VCM 0.1 10 9 650 640 15 0.5 V/s s s ns ns s s AV = +2, VOUT = 10mVP-P, Rg = Rf = RL = 10k to VCM Enable to Output Turn-on Delay Time, 10% VEN = 5V to 0V, AV = +2, EN to 10% VOUT Rg = Rf = RL = 1k to VCM Enable to Output Turn-off Delay Time, 10% VEN = 0V to 5V, AV = +2, Rg = Rf = RL = 1k to VCM EN to 10% VOUT NOTE: 1. Parts are 100% tested at +25C. Temperature limits established by characterization and are not production tested. 3 FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 1 0 NORMALIZED GAIN (dB) Rf = Rg = 499 Rf = Rg = 1k NORMALIZED GAIN (dB) 100k 1M -1 -2 -3 -4 -5 -6 -7 -8 -9 10 100 1k V+ = 5V RL = 1k CL = 16.3pF AV = +2 VOUT = 10mVP-P 4 VOUT = 10mV 3 2 VOUT = 50mV 1 0 -1 VOUT = 100mV -2 -3 V = 5V + -4 RL = 1k -5 CL = 16.3pF VOUT = 1V -6 AV = +1 -7 VOUT = 10mVP-P -8 1k 10k 100k FREQUENCY (Hz) Rf = Rg = 10k Rf = Rg = 4.99k 10k FREQUENCY (Hz) 1M FIGURE 1. GAIN vs FREQUENCY vs FEEDBACK RESISTOR VALUES Rf/Rg FIGURE 2. GAIN vs FREQUENCY vs VOUT, RL = 1k 1 0 NORMALIZED GAIN (dB) -1 -2 -3 -4 -5 -6 -7 -8 -9 VOUT = 10mV VOUT = 50mV VOUT = 100mV VOUT = 1V V+ = 5V RL = 10k CL = 16.3pF AV = +1 VOUT = 10mVP-P 1k 10k 100k FREQUENCY (Hz) 1M NORMALIZED GAIN (dB) 1 0 -1 -2 -3 -4 VOUT = 10mV VOUT = 50mV VOUT = 100mV VOUT = 1V -5 V+ = 5V -6 RL = 100k CL = 16.3pF -7 AV = +1 -8 V OUT = 10mVP-P -9 1k 10k 100k FREQUENCY (Hz) 1M FIGURE 3. GAIN vs FREQUENCY vs VOUT, RL = 10k FIGURE 4. GAIN vs FREQUENCY vs VOUT, RL = 100k 4 3 NORMALIZED GAIN (dB) 2 1 0 -1 -2 -3 -4 -5 -6 1k V+ = 5V CL = 16.3pF AV = +1 VOUT = 10mVP-P RL = 100k RL = 1k RL = 10k GAIN (dB) 70 60 50 40 30 20 10 AV = 1 0 1M -10 10 100 AV = 10 AV = 101 AV = 1001 AV = 1, Rg = INF, Rf = 0 AV = 10, Rg = 1k, Rf = 9.09k AV = 101, Rg = 1k, Rf = 100k AV = 1001, Rg = 1k, Rf = 1M V+ = 5V CL = 16.3pF RL = 10k VOUT = 10mVP-P 10k 100k FREQUENCY (Hz) 1k 10k FREQUENCY (Hz) 100k 1M FIGURE 5. GAIN vs FREQUENCY vs RL FIGURE 6. FREQUENCY RESPONSE vs CLOSED LOOP GAIN 4 FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 1 0 NORMALIZED GAIN (dB) -1 -2 -3 -4 -5 -6 -7 -8 1k RL = 10k CL = 16.3pF AV = +1 VOUT = 10mVP-P 10k 100k FREQUENCY (Hz) 1M V+ = 2.4V V+ = 5V NORMALIZED GAIN (dB) 8 6 4 2 0 -2 -4 V+ = 5V -6 RL = 10k AV = +1 -8 V OUT = 10mVP-P -10 1k CL = 43.3pF CL = 34.3pF CL = 16.3pF CL = 98.3pF CL = 72.3pF CL = 55.3pF (Continued) 10k 100k FREQUENCY (Hz) 1M FIGURE 7. GAIN vs FREQUENCY vs SUPPLY VOLTAGE FIGURE 8. GAIN vs FREQUENCY vs CL 10 0 -10 -20 CMRR (dB) -30 -40 -50 -60 -70 -80 -90 10 100 1k 10k FREQUENCY (Hz) V+ = 2.4V, 5V RL = 10k CL = 16.3pF AV = +1 VCM = 1VP-P 100k 1M PSRR (dB) 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 10 100 1k 10k FREQUENCY (Hz) V+ = 2.4V RL = 10k CL = 16.3pF AV = +1 VCM = 1VP-P 100k 1M PSRRPSRR+ FIGURE 9. CMRR vs FREQUENCY, V+ = 2.4V AND 5V FIGURE 10. PSRR vs FREQUENCY, V+, V- = 1.2V 10 -10 -20 PSRR (dB) -30 -40 -50 -60 -70 -80 -90 -100 10 100 1k 10k V+ = 5V RL = 10k CL = 16.3pF AV = +1 VCM = 1VP-P 100k 1M FREQUENCY (Hz) PSRR+ PSRRINPUT VOLTAGE NOISE (nV/Hz) 0 1000 V+ = 5V RL = 10k CL = 16.3pF AV = +1 100 10 1 10 100 1k 10k 100k FREQUENCY (Hz) FIGURE 11. PSRR vs FREQUENCY, V+, V- = 2.5V FIGURE 12. INPUT VOLTAGE NOISE DENSITY vs FREQUENCY 5 FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 10 INPUT CURRENT NOISE (pA/Hz) V+ = 5V RL = 10k CL = 16.3pF AV = +1 1 0 -0.2 INPUT NOISE (V) -0.4 -0.6 -0.8 -1.0 -1.2 -1.4 0.1 1 10 100 1k FREQUENCY (Hz) 10k 100k -1.6 0 1 2 3 4 5 6 TIME (s) 7 8 9 10 (Continued) RL = 10k V+ = 5V CL = 16.3pF AV = 1000 Rg = 100, Rf = 100k FIGURE 13. INPUT CURRENT NOISE DENSITY vs FREQUENCY FIGURE 14. INPUT VOLTAGE NOISE 0.1Hz TO 10Hz 0.6 0.4 LARGE SIGNAL (V) SMALL SIGNAL (V) 0.2 0 -0.2 -0.4 -0.6 0 50 100 150 200 250 TIME (s) 300 350 400 0.020 0.018 0.016 0.014 0.012 0.010 0.008 0.006 0 50 100 V+, V- = 2.5V RL = 10k CL = 16.3pF Rg = Rf = 10k AV = 2 VOUT = 10mVP-P 150 200 250 TIME (s) 300 350 400 V+, V- = 2.5V RL = 10k CL = 16.3pF Rg = Rf = 10k AV = 2 VOUT = 1VP-P FIGURE 15. LARGE SIGNAL STEP RESPONSE FIGURE 16. SMALL SIGNAL STEP RESPONSE 6 V-ENABLE 5 4 V-ENABLE (V) 3 2 1 0 -1 V+ = 5V Rg = Rf = 10k CL = 16.3pF AV = +2 VOUT = 1VP-P RL = 10k V-OUT 1.2 1.0 0.8 0.6 0.4 0.2 0 -0.2 400 OUTPUT (V) 0 50 100 150 200 250 TIME (s) 300 350 FIGURE 17. ENABLE TO OUTPUT RESPONSE 6 FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 500 400 300 200 100 0 -100 -200 -300 -400 -500 -1 0 1 2 3 VCM (V) 4 5 6 V+ = 5V RL = OPEN Rf = 100k, Rg = 100 AV = +1000 I-BIAS (pA) VOS (V) 100 80 60 40 20 0 -20 -40 -60 -80 -100 -1 0 1 2 3 VCM (V) 4 5 6 V+ = 5V RL = OPEN Rf = 100k, Rg = 100 AV = +1000 (Continued) FIGURE 18. INPUT OFFSET VOLTAGE vs COMMON MODE INPUT VOLTAGE FIGURE 19. INPUT BIAS CURRENT vs COMMON MODE INPUT VOLTAGE 50 N = 1000 45 MAX CURRENT (A) CURRENT (A) 40 MEDIAN 35 MIN 30 25 20 -40 14 13 12 11 10 9 8 7 6 -20 0 20 40 60 80 100 120 5 -40 -20 0 20 40 60 80 100 120 MIN MEDIAN N = 1000 MAX TEMPERATURE (C) TEMPERATURE (C) FIGURE 20. SUPPLY CURRENT ENABLED vs TEMPERATURE, V+, V- = 2.5V FIGURE 21. SUPPLY CURRENT DISABLED vs TEMPERATURE, V+, V- = 2.5V 500 N = 1000 300 MAX 100 VOS (V) -100 MIN -300 -500 -700 -40 VOS (V) MEDIAN 800 600 400 200 0 -200 -400 -600 N = 1000 MAX MEDIAN MIN -800 -20 0 20 40 60 80 100 120 -1000 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) TEMPERATURE (C) FIGURE 22. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 2.75V FIGURE 23. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 2.75V 7 FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 500 N = 1000 300 MAX 100 VOS (V) -100 MIN -300 -500 -700 -40 VOS (V) MEDIAN 1000 800 600 400 200 0 -200 -400 -600 -800 -1000 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) TEMPERATURE (C) MIN MEDIAN N = 1000 MAX (Continued) FIGURE 24. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 2.5V FIGURE 25. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 2.5V 700 N = 1000 500 300 VOS (V) 100 -100 MIN -300 -500 -700 -40 -20 0 20 40 60 80 100 120 MAX VOS (V) MEDIAN 1000 800 600 400 200 0 -200 -400 -600 -800 -1000 -40 N = 1000 MAX MEDIAN MIN -20 0 20 40 60 80 100 120 TEMPERATURE (C) TEMPERATURE (C) FIGURE 26. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 1.2V FIGURE 27. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 1.2V 250 N = 1000 200 150 IBIAS+ (pA) 100 50 0 -50 -40 MIN MEDIAN IBIAS- (pA) MAX 500 450 400 350 300 250 200 150 100 50 0 -20 0 20 40 60 80 100 120 N = 1000 MAX MEDIAN MIN -50 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) TEMPERATURE (C) FIGURE 28. IBIAS+ vs TEMPERATURE, V+, V- = 2.5V FIGURE 29. IBIAS- vs TEMPERATURE, V+, V- = 2.5V 8 FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 350 N = 1000 300 250 MEDIAN IBIAS+ (pA) IBIAS- (pA) 200 150 100 MIN 50 0 -50 -40 -20 0 20 40 60 80 100 120 MAX 450 400 350 300 250 200 150 100 50 0 -50 -40 -20 0 20 40 60 80 100 120 MIN MEDIAN (Continued) N = 1000 MAX TEMPERATURE (C) TEMPERATURE (C) FIGURE 30. IBIAS+ vs TEMPERATURE, V+, V- = 1.2V FIGURE 31. IBIAS- vs TEMPERATURE, V+, V- = 1.2V 20 0 -20 -40 IOS (pA) N = 1000 30 N = 1000 10 -10 -30 IOS (pA) MAX MEDIAN -50 -70 -90 -110 MIN -130 -150 -40 MIN MEDIAN MAX -60 -80 -100 -120 -140 -160 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 32. IOS vs TEMPERATURE, V+, V- = 2.5 FIGURE 33. IOS vs TEMPERATURE, V+, V- = 1.2V 140 130 MAX 120 CMRR (dB) 110 100 90 80 70 -40 MEDIAN 140 N = 1000 130 120 110 100 90 MIN -20 0 20 40 60 80 100 120 N = 1000 MAX PSRR (dB) MEDIAN MIN -20 0 20 40 60 80 TEMPERATURE (C) 100 120 80 -40 TEMPERATURE (C) FIGURE 34. CMRR vs TEMPERATURE, VCM = -2.5V TO +2.5V, V+, V- = 2.5V FIGURE 35. PSRR vs TEMPERATURE, V+, V- = 1.2V TO 2.75V 9 FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 450 N = 1000 400 MAX 350 AVOL (V/mV) AVOL (V/mV) 300 250 200 150 100 -40 MIN MEDIAN 70 65 60 55 50 45 40 35 30 25 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 20 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 MIN MEDIAN MAX (Continued) N = 1000 FIGURE 36. AVOL vs TEMPERATURE, V+, V- = 2.5V, VO = -2V TO +2V, RL = 100k FIGURE 37. AVOL vs TEMPERATURE, V+, V- = 2.5V, VO = -2V TO +2V, RL = 1k 4.92 N = 1000 4.91 4.90 VOUT (V) VOUT (V) 4.89 4.88 4.87 4.86 4.85 4.84 -40 -20 0 20 40 60 80 100 120 MIN MAX MEDIAN 4.9980 N = 1000 4.9975 MAX 4.9970 MEDIAN 4.9965 MIN 4.9960 4.9955 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) TEMPERATURE (C) FIGURE 38. VOUT HIGH vs TEMPERATURE, V+, V- =2.5V, RL = 1k FIGURE 39. VOUT HIGH vs TEMPERATURE, V+, V- = 2.5V, RL = 100k 190 180 170 VOUT (mV) 160 150 140 130 120 N = 1000 MAX VOUT (mV) 7.5 7.0 6.5 6.0 5.5 N = 1000 MAX MEDIAN MIN MEDIAN 5.0 4.5 MIN 110 100 -40 -20 0 20 40 60 80 100 120 4.0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) TEMPERATURE (C) FIGURE 40. VOUT LOW vs TEMPERATURE, V+, V- = 2.5V, RL = 1k FIGURE 41. VOUT LOW vs TEMPERATURE, V+, V- = 2.5V, RL = 100k 10 FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. IO+ SHORT CIRCUIT CURRENT (mA) N = 1000 MAX IO- SHORT CIRCUIT CURRENT (mA) 45 -20 N = 1000 -22 -24 MEDIAN -26 -28 -30 -32 -40 MIN MAX (Continued) 40 35 MEDIAN 30 25 MIN 20 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 42. IO+ SHORT CIRCUIT OUTPUT CURRENT vs TEMPERATURE VIN = -2.55V, RL = 10k, V+, V- = 2.5V FIGURE 43. IO- SHORT CIRCUIT OUTPUT CURRENT vs TEMPERATURE VIN = +2.55V, RL = 10k, V+, V- = 2.5V Pin Descriptions ISL28158 (6 Ld SOT-23) ISL28158 (8 Ld SOIC) 1, 5 4 2 2 (A) 6 (B) ISL28258 (8 Ld SOIC) (8 Ld MSOP) PIN NAME NC ININ- (A) IN- (B) FUNCTION Not connected inverting input V+ EQUIVALENT CIRCUIT IN- IN+ VCircuit 1 3 3 3 (A) 5 (B) IN+ IN+ (A) IN+ (B) V- Non-inverting input See Circuit 1 2 4 4 Negative supply V+ CAPACITIVELY COUPLED ESD CLAMP VCircuit 2 1 6 1 (A) 7 (B) OUT OUT (A) OUT (B) Output V+ OUT VCircuit 3 6 5 7 8 8 V+ EN Positive supply Chip enable LOGIC PIN See Circuit 2 V+ VCircuit 3 11 FN6377.2 February 11, 2008 ISL28158, ISL28258 Applications Information Introduction The ISL28158 is a single CMOS rail-to-rail input, output (RRIO) operational amplifier with an enable feature. The ISL28258 is a dual version without the enable feature. Both devices are designed to operate from single supply (2.4V to 5.5V) or dual supplies (1.2V to 2.75V). Enable/Disable Feature The ISL28158 offers an EN pin that disables the device when pulled up to at least 2.0V. In the disabled state (output in a high impedance state), the part consumes typically 10A at room temperature. By disabling the part, multiple ISL28158 parts can be connected together as a MUX. In this configuration, the outputs are tied together in parallel and a channel can be selected by the EN pin. The loading effects of the feedback resistors of the disabled amplifier must be considered when multiple amplifier outputs are connected together. Note that feed through from the IN+ to IN- pins occurs on any Mux Amp disabled channel where the input differential voltage exceeds 0.5V (e.g., active channel VOUT = 1V, while disabled channel VIN = GND), so the mux implementation is best suited for small signal applications. If large signals are required, use series IN+ resistors, or large value RF, to keep the feed through current low enough to minimize the impact on the active channel. See "Limitations of the Differential Input Protection" on page 12 for more details. The EN pin also has an internal pull-down. If left open, the EN pin will pull to the negative rail and the device will be enabled by default. When not used, the EN pin should either be left floating or connected directly to the -V pin. Rail-to-Rail Input/Output These devices feature PMOS inputs with an input common mode range that extends up to 0.3V beyond the V+ rail, and to 0.1V below the V- rail. The CMOS output features excellent drive capability, typically swinging to within 6mV of either rail with a 100k load. Results of Over-Driving the Output Caution should be used when over-driving the output for long periods of time. Over-driving the output can occur in two ways. 1) The input voltage times the gain of the amplifier exceeds the supply voltage by a large value or, 2) the output current required is higher than the output stage can deliver. These conditions can result in a shift in the Input Offset Voltage (VOS) as much as 1V/hr. of exposure under these conditions. Limitations of the Differential Input Protection If the input differential voltage is expected to exceed 0.5V, an external current limiting resistor must be used to ensure the input current never exceeds 5mA. For non-inverting unity gain applications, the current limiting can be via a series IN+ resistor, or via a feedback resistor of appropriate value. For other gain configurations, the series IN+ resistor is the best choice, unless the feedback (RF) and gain setting (RG) resistors are both sufficiently large to limit the input current to 5mA. Large differential input voltages can arise from several sources: IN+ and IN- Input Protection All input terminals have internal ESD protection diodes to both positive and negative supply rails, limiting the input voltage to within one diode beyond the supply rails. They also contain back-to-back diodes across the input terminals (see "Pin Descriptions" on page 11 - Circuit 1). For applications where the input differential voltage is expected to exceed 0.5V, an external series resistor must be used to ensure the input currents never exceed 5mA (Figure 44). VIN RIN + RL VOUT 1) During open loop (comparator) operation. Used this way, the IN+ and IN- voltages don't track, so differentials arise. 2) When the amplifier is disabled but an input signal is still present. An RL or RG to GND keeps the IN- at GND, while the varying IN+ signal creates a differential voltage. Mux Amp applications are similar, except that the active channel VOUT determines the voltage on the IN- terminal. 3) When the slew rate of the input pulse is considerably faster than the op amp's slew rate. If the VOUT can't keep up with the IN+ signal, a differential voltage results, and visible distortion occurs on the input and output signals. To avoid this issue, keep the input slew rate below 0.1V/s, or use appropriate current limiting resistors. Large (>2V) differential input voltages can also cause an increase in disabled ICC. FIGURE 44. INPUT CURRENT LIMITING 12 FN6377.2 February 11, 2008 ISL28158, ISL28258 Using Only One Channel The ISL28258 is a dual op amp. If the application only requires one channel, the user must configure the unused channel to prevent it from oscillating. The unused channel will oscillate if the input and output pins are floating. This will result in higher than expected supply currents and possible noise injection into the channel being used. The proper way to prevent this oscillation is to short the output to the negative input and ground the positive input (as shown in Figure 45). + Power Dissipation It is possible to exceed the +125C 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 to remain in the safe operating area. These parameters are related in Equation 1: T JMAX = T MAX + ( JA xPD MAXTOTAL ) (EQ. 1) where: * PDMAXTOTAL is the sum of the maximum power dissipation of each amplifier in the package (PDMAX) * PDMAX for each amplifier can be calculated using Equation 2: V OUTMAX PD MAX = 2*V S x I SMAX + ( V S - V OUTMAX ) x --------------------------R L FIGURE 45. PREVENTING OSCILLATIONS IN UNUSED CHANNELS Current Limiting These devices have no internal current-limiting 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. (EQ. 2) where: * TMAX = Maximum ambient temperature * JA = Thermal resistance of the package * PDMAX = Maximum power dissipation of 1 amplifier * VS = Supply voltage (Magnitude of V+ and V-) * IMAX = Maximum supply current of 1 amplifier * VOUTMAX = Maximum output voltage swing of the application * RL = Load resistance 13 FN6377.2 February 11, 2008 ISL28158, ISL28258 SOT-23 Package Family e1 A N 6 4 MDP0038 D SOT-23 PACKAGE FAMILY MILLIMETERS SYMBOL A A1 SOT23-5 1.45 0.10 1.14 0.40 0.14 2.90 2.80 1.60 0.95 1.90 0.45 0.60 5 SOT23-6 1.45 0.10 1.14 0.40 0.14 2.90 2.80 1.60 0.95 1.90 0.45 0.60 6 TOLERANCE MAX 0.05 0.15 0.05 0.06 Basic Basic Basic Basic Basic 0.10 Reference Reference Rev. F 2/07 NOTES: E1 2 3 E A2 b c 0.20 C 0.15 C D 2X 5 e B b NX 1 2 3 2X 0.20 M C A-B D D E E1 e e1 L L1 N 0.15 C A-B 2X C D 1 3 A2 SEATING PLANE 0.10 C NX A1 1. Plastic or metal protrusions of 0.25mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25mm maximum per side are not included. 3. This dimension is measured at Datum Plane "H". 4. Dimensioning and tolerancing per ASME Y14.5M-1994. 5. Index area - Pin #1 I.D. will be located within the indicated zone (SOT23-6 only). (L1) H 6. SOT23-5 version has no center lead (shown as a dashed line). A GAUGE PLANE c L 0 +3 -0 0.25 14 FN6377.2 February 11, 2008 ISL28158, ISL28258 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 15 FN6377.2 February 11, 2008 ISL28158, ISL28258 Mini SO Package Family (MSOP) 0.25 M C A B D N A (N/2)+1 MDP0043 MINI SO PACKAGE FAMILY MILLIMETERS SYMBOL A A1 MSOP8 1.10 0.10 0.86 0.33 0.18 3.00 4.90 3.00 0.65 0.55 0.95 8 MSOP10 1.10 0.10 0.86 0.23 0.18 3.00 4.90 3.00 0.50 0.55 0.95 10 TOLERANCE Max. 0.05 0.09 +0.07/-0.08 0.05 0.10 0.15 0.10 Basic 0.15 Basic Reference NOTES 1, 3 2, 3 Rev. D 2/07 NOTES: 1. Plastic or metal protrusions of 0.15mm maximum per side are not included. E E1 PIN #1 I.D. A2 b c B 1 (N/2) D E E1 e C SEATING PLANE 0.10 C N LEADS b H e L L1 N 0.08 M C A B L1 A c SEE DETAIL "X" 2. Plastic interlead protrusions of 0.25mm 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. A2 GAUGE PLANE L DETAIL X 0.25 A1 3 3 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 FN6377.2 February 11, 2008 |
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