ISL28158, ISL28258 (R) Data Sheet February 11, 2008 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. FN6377.2 Features * 34A typical supply current * 300V maximum offset voltage (8 Ld SOIC) * 1pA typical input bias current * 200kHz gain bandwidth product 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. * 2.4V to 5.5V single supply voltage range 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. * Battery- or solar-powered systems 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. * ADC buffers 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. Pinouts ISL28158 (8 LD SOIC) TOP VIEW ISL28158 (6 LD SOT-23) TOP VIEW OUT 1 V- 2 + - IN+ 3 6 V+ NC 1 5 EN IN- 2 4 IN- IN+ 3 8 EN 7 V+ + 6 OUT V- 4 ISL28258 (8 LD MSOP) TOP VIEW ISL28258 (8 LD SOIC) TOP VIEW OUT_A 1 IN-_A 2 IN+_A 3 V- 4 8 V+ - + + - 5 NC OUT_A 1 7 OUT_B IN-_A 2 6 IN-_B IN+_A 3 5 IN+_B V- 4 1 7 OUT_B + - * Enable pin (ISL28158 only) * Pb-free (RoHS compliant) Applications * 4mA to 20mA current loops * Handheld consumer products * Medical devices * Sensor amplifiers * DAC output amplifiers Ordering Information PART NUMBER (Note) PART MARKING PACKAGE (Pb-free) PKG. DWG. # ISL28158FHZ-T7* GABW 6 Ld SOT-23 MDP0038 ISL28158FHZ-T7A* GABW 6 Ld SOT-23 MDP0038 ISL28158FBZ 28158 FBZ 8 Ld SOIC MDP0027 ISL28158FBZ-T7* 28158 FBZ 8 Ld SOIC MDP0027 Coming Soon ISL28258FBZ 28258 FBZ 8 Ld SOIC MDP0027 Coming Soon ISL28258FBZ-T7* 28258 FBZ 8 Ld SOIC MDP0027 Coming Soon ISL28258FUZ 8258Z 8 Ld MSOP MDP0043 Coming Soon ISL28258FUZ-T7* 8258Z 8 Ld MSOP MDP0043 *Please refer to TB347 for details on reel specifications. 8 V+ - + * Rail-to-rail input and output 6 IN-_B 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. 5 IN+_B 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) Thermal Information 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 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 PARAMETER 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 DC SPECIFICATIONS VOS Input Offset Voltage V OS --------------T Input Offset Voltage vs Temperature IOS Input Offset Current IB 8 Ld SOIC -300 -650 3.1 300 650 V 6 Ld SOT-23 -550 -750 5 550 750 V 0.3 V/C -35 -80 5 35 80 pA TA = -40C to +85C -30 -80 1 30 80 pA TA = -40C to +85C 5 V Input Bias Current VCM Common-Mode Voltage Range Guaranteed by CMRR 0 CMRR Common-Mode Rejection Ratio VCM = 0V to 5V 75 70 98 dB PSRR Power Supply Rejection Ratio V+ = 2.4V to 5.5V 80 75 98 dB AVOL Large Signal Voltage Gain VO = 0.5V to 4.5V, RL = 100k to VCM 100 75 220 V/mV VO = 0.5V to 4.5V, RL = 1k to VCM 45 V/mV Output low, RL = 100k to VCM 5.3 6 20 mV Output low, RL = 1k to VCM 135 150 250 mV VOUT IS,ON Maximum Output Voltage Swing Quiescent Supply Current, Enabled Output high, RL = 100k to VCM 4.995 4.993 4.996 V Output high, RL = 1k to VCM 4.84 4.77 4.874 V 26 15 34 V+ = 5V V+ = 2.4V 2 20 43 55 A A FN6377.2 February 11, 2008 ISL28158, ISL28258 Electrical Specifications PARAMETER 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 CONDITIONS MIN (Note 1) TYP 10 MAX (Note 1) 14 19 UNIT IS,OFF Quiescent Supply Current, Disabled IO+ Short-Circuit Output Source Current RL = 10 to VCM 27 20 30 mA IO- Short-Circuit Output Sink Current RL = 10 to VCM 22 15 25 mA VSUPPLY Supply Operating Range V+ to V- 2.4 VENH EN Pin High Level VENL EN Pin Low Level IENH EN Pin Input High Current VEN = V+ IENL EN Pin Input Low Current 5.5 2 A V V 0.8 V 1 1.5 1.6 A VEN = V- 12 25 30 nA AC SPECIFICATONS GBW Gain Bandwidth Product AV = 100, RF = 100k, RG = 1k, RL = 10k to VCM 200 kHz Unity Gain Bandwidth -3dB Bandwidth AV =1, RF = 0, VOUT = 10mVP-P 420 kHz eN Input Noise Voltage Peak-to-Peak f = 0.1Hz to 10Hz 1.4 VP-P Input Noise Voltage Density fO = 1kHz 64 nV/Hz iN Input Noise Current Density fO = 10kHz 0.19 pA/Hz CMRR @ 60Hz Input Common Mode Rejection Ratio VCM = 1VP-P, RL = 10k to VCM -70 dB PSRR+ @ 120Hz Power Supply Rejection Ratio (V+) V+, V- = 1.2V and 2.5V, VSOURCE = 1VP-P, RL = 10k to VCM -64 dB PSRR- @ 120Hz Power Supply Rejection Ratio (V-) V+, V- = 1.2V and 2.5V VSOURCE = 1VP-P, RL = 10k to VCM -85 dB 0.1 V/s TRANSIENT RESPONSE SR Slew Rate tr, tf, Large Signal Rise Time, 10% to 90% VOUT AV = +2, VOUT = 1VP-P, Rg = Rf = 10k RL = 10k to VCM 10 s Fall Time, 90% to 10% VOUT AV = +2, VOUT = 1VP-P, Rg = Rf = 10k RL = 10k to VCM 9 s Rise Time, 10% to 90% VOUT AV = +2, VOUT = 10mVP-P, Rg = Rf = RL = 10k to VCM 650 ns Fall Time, 90% to 10% VOUT AV = +2, VOUT = 10mVP-P, Rg = Rf = RL = 10k to VCM 640 ns Enable to Output Turn-on Delay Time, 10% VEN = 5V to 0V, AV = +2, EN to 10% VOUT Rg = Rf = RL = 1k to VCM 15 s Enable to Output Turn-off Delay Time, 10% VEN = 0V to 5V, AV = +2, Rg = Rf = RL = 1k to VCM EN to 10% VOUT 0.5 s tr, tf, Small Signal tEN 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 -1 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 0 Rf = Rg = 499 -2 Rf = Rg = 1k -3 -4 -5 V+ = 5V RL = 1k CL = 16.3pF AV = +2 VOUT = 10mVP-P -6 -7 -8 Rf = Rg = 10k Rf = Rg = 4.99k -9 10 100 1k 10k 100k 1M FREQUENCY (Hz) 1 1 0 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 0 -1 -2 VOUT = 10mV -3 VOUT = 50mV -4 VOUT = 100mV -5 VOUT = 1V V+ = 5V RL = 10k CL = 16.3pF AV = +1 VOUT = 10mVP-P -6 -7 -8 1k 10k 100k FREQUENCY (Hz) 1M FIGURE 3. GAIN vs FREQUENCY vs VOUT, RL = 10k GAIN (dB) RL = 10k 0 -1 -2 -6 1k VOUT = 100mV -4 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) AV = 1001 50 1 -5 VOUT = 50mV -3 60 RL = 1k 2 -4 VOUT = 10mV -2 70 3 -3 -1 RL = 100k V+ = 5V CL = 16.3pF AV = +1 VOUT = 10mVP-P 1M FIGURE 4. GAIN vs FREQUENCY vs VOUT, RL = 100k 4 NORMALIZED GAIN (dB) 1M FIGURE 2. GAIN vs FREQUENCY vs VOUT, RL = 1k FIGURE 1. GAIN vs FREQUENCY vs FEEDBACK RESISTOR VALUES Rf/Rg -9 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) 40 AV = 101 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 30 20 AV = 10 10 AV = 1 0 10k 100k FREQUENCY (Hz) FIGURE 5. GAIN vs FREQUENCY vs RL 4 1M -10 10 100 1k 10k FREQUENCY (Hz) 100k 1M FIGURE 6. FREQUENCY RESPONSE vs CLOSED LOOP GAIN FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 8 1 V+ = 5V -1 V+ = 2.4V -2 -3 -4 -6 -7 RL = 10k CL = 16.3pF AV = +1 VOUT = 10mVP-P -8 1k 10k 100k FREQUENCY (Hz) CL = 98.3pF CL = 72.3pF CL = 55.3pF 6 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 0 -5 4 2 0 -2 CL = 43.3pF -4 CL = 34.3pF V+ = 5V -6 RL = 10k AV = +1 -8 V OUT = 10mVP-P -10 1k 1M FIGURE 7. GAIN vs FREQUENCY vs SUPPLY VOLTAGE 0 -10 -10 PSRR (dB) CMRR (dB) 1M PSRR- -20 -20 -30 -40 -50 V+ = 2.4V, 5V RL = 10k CL = 16.3pF AV = +1 VCM = 1VP-P -60 -70 -80 100 1k 10k FREQUENCY (Hz) 100k -30 PSRR+ -40 -50 V+ = 2.4V RL = 10k CL = 16.3pF AV = +1 VCM = 1VP-P -60 -70 -80 -90 -100 10 1M FIGURE 9. CMRR vs FREQUENCY, V+ = 2.4V AND 5V 100 1k 10k FREQUENCY (Hz) 100k 1M FIGURE 10. PSRR vs FREQUENCY, V+, V- = 1.2V 1000 10 INPUT VOLTAGE NOISE (nV/Hz) 0 -10 PSRR- -20 -30 PSRR+ -40 -50 -60 V+ = 5V RL = 10k CL = 16.3pF AV = +1 VCM = 1VP-P -70 -80 -90 -100 10 10k 100k FREQUENCY (Hz) 10 0 -90 10 CL = 16.3pF FIGURE 8. GAIN vs FREQUENCY vs CL 10 PSRR (dB) (Continued) 100 1k 10k 100k FREQUENCY (Hz) FIGURE 11. PSRR vs FREQUENCY, V+, V- = 2.5V 5 1M V+ = 5V RL = 10k CL = 16.3pF AV = +1 100 10 1 10 100 1k 10k 100k FREQUENCY (Hz) FIGURE 12. INPUT VOLTAGE NOISE DENSITY vs FREQUENCY FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 0 V+ = 5V RL = 10k CL = 16.3pF AV = +1 1 -0.4 -0.6 -0.8 -1.0 -1.2 -1.4 0.1 10 100 1k FREQUENCY (Hz) 10k -1.6 100k FIGURE 13. INPUT CURRENT NOISE DENSITY vs FREQUENCY 0.4 0.018 SMALL SIGNAL (V) 0.020 0.2 V+, V- = 2.5V RL = 10k CL = 16.3pF Rg = Rf = 10k AV = 2 VOUT = 1VP-P -0.2 -0.4 50 100 150 2 200 250 TIME (s) 300 350 5 6 TIME (s) 7 8 9 10 0.014 V+, V- = 2.5V RL = 10k CL = 16.3pF Rg = Rf = 10k AV = 2 VOUT = 10mVP-P 0.012 0.010 0 50 100 150 200 250 TIME (s) 300 350 400 FIGURE 16. SMALL SIGNAL STEP RESPONSE 6 1.2 V-OUT V-ENABLE 5 1.0 4 0.8 V+ = 5V Rg = Rf = 10k CL = 16.3pF AV = +2 VOUT = 1VP-P 3 2 1 0.6 0.4 0.2 RL = 10k 0 -1 4 0.016 0.006 400 FIGURE 15. LARGE SIGNAL STEP RESPONSE V-ENABLE (V) 3 0.008 -0.6 0 1 FIGURE 14. INPUT VOLTAGE NOISE 0.1Hz TO 10Hz 0.6 0 0 OUTPUT (V) 1 LARGE SIGNAL (V) RL = 10k V+ = 5V CL = 16.3pF AV = 1000 Rg = 100, Rf = 100k -0.2 INPUT NOISE (V) INPUT CURRENT NOISE (pA/Hz) 10 (Continued) 0 0 50 100 150 200 250 TIME (s) 300 350 -0.2 400 FIGURE 17. ENABLE TO OUTPUT RESPONSE 6 FN6377.2 February 11, 2008 ISL28158, ISL28258 500 100 400 80 300 60 200 40 I-BIAS (pA) VOS (V) Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 100 0 -100 V+ = 5V RL = OPEN Rf = 100k, Rg = 100 AV = +1000 -200 -300 -400 20 0 0 1 2 -40 -60 -80 3 VCM (V) 4 5 -100 6 FIGURE 18. INPUT OFFSET VOLTAGE vs COMMON MODE INPUT VOLTAGE -1 0 1 2 3 VCM (V) 6 N = 1000 13 MAX 45 12 CURRENT (A) MAX 40 MEDIAN 35 MIN 30 11 10 MEDIAN 9 8 MIN 7 25 6 -20 0 20 40 60 80 100 5 -40 120 -20 0 20 TEMPERATURE (C) 40 60 80 100 120 TEMPERATURE (C) FIGURE 20. SUPPLY CURRENT ENABLED vs TEMPERATURE, V+, V- = 2.5V FIGURE 21. SUPPLY CURRENT DISABLED vs TEMPERATURE, V+, V- = 2.5V 800 500 N = 1000 N = 1000 MAX 600 300 400 MAX MEDIAN -100 MIN 200 VOS (V) 100 VOS (V) 5 14 N = 1000 20 -40 4 FIGURE 19. INPUT BIAS CURRENT vs COMMON MODE INPUT VOLTAGE 50 CURRENT (A) V+ = 5V RL = OPEN Rf = 100k, Rg = 100 AV = +1000 -20 -500 -1 (Continued) MEDIAN 0 -200 -400 -300 -600 MIN -500 -700 -40 -800 -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 22. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 2.75V 7 -1000 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 23. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 2.75V FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 1000 500 N = 1000 N = 1000 800 300 MAX 600 MAX 400 100 MEDIAN VOS (V) VOS (V) (Continued) -100 MIN -300 200 MEDIAN 0 -200 -400 -600 -500 MIN -800 -700 -40 -1000 -20 0 20 40 60 80 100 120 -40 -20 0 TEMPERATURE (C) FIGURE 24. VOS (SOIC PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 2.5V 1000 N = 1000 60 80 100 120 N = 1000 800 500 MAX 600 MAX 400 100 VOS (V) 300 MEDIAN -100 MIN 200 MEDIAN 0 -200 -400 -300 -600 -500 MIN -800 -700 -40 -20 0 20 40 60 80 100 -1000 -40 120 -20 0 TEMPERATURE (C) 20 40 60 80 100 120 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 250 500 MAX N = 1000 450 200 N = 1000 MAX 400 350 IBIAS- (pA) MEDIAN 150 IBIAS+ (pA) 40 FIGURE 25. VOS (SOT PKG) vs TEMPERATURE, VIN = 0V, V+, V- = 2.5V 700 VOS (V) 20 TEMPERATURE (C) 100 MIN 50 MEDIAN 300 250 200 150 MIN 100 50 0 0 -50 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 28. IBIAS+ vs TEMPERATURE, V+, V- = 2.5V 8 -50 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 29. IBIAS- vs TEMPERATURE, V+, V- = 2.5V FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 350 450 N = 1000 MAX 300 N = 1000 MAX 400 350 250 300 MEDIAN 200 IBIAS- (pA) IBIAS+ (pA) (Continued) 150 100 MIN MEDIAN 250 200 150 MIN 100 50 50 0 0 -50 -40 -50 -40 -20 0 20 40 60 80 100 120 -20 0 FIGURE 30. IBIAS+ vs TEMPERATURE, V+, V- = 1.2V 20 -20 -10 100 120 -30 MAX -60 -80 IOS (pA) IOS (pA) 80 N = 1000 -40 MEDIAN MAX -50 -70 MEDIAN -90 -100 -110 -120 MIN MIN -130 -140 -20 0 20 40 60 80 TEMPERATURE (C) 100 -150 -40 120 N = 1000 130 MAX PSRR (dB) 110 MEDIAN 40 60 80 100 120 TEMPERATURE (C) FIGURE 34. CMRR vs TEMPERATURE, VCM = -2.5V TO +2.5V, V+, V- = 2.5V 9 100 120 MEDIAN 90 20 80 110 MIN MIN 0 60 120 100 -20 40 MAX 90 80 20 N = 1000 130 120 100 0 FIGURE 33. IOS vs TEMPERATURE, V+, V- = 1.2V 140 140 -20 TEMPERATURE (C) FIGURE 32. IOS vs TEMPERATURE, V+, V- = 2.5 CMRR (dB) 60 30 N = 1000 10 70 -40 40 FIGURE 31. IBIAS- vs TEMPERATURE, V+, V- = 1.2V 0 -160 -40 20 TEMPERATURE (C) TEMPERATURE (C) 80 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 FIGURE 35. PSRR vs TEMPERATURE, V+, V- = 1.2V TO 2.75V FN6377.2 February 11, 2008 ISL28158, ISL28258 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. 70 450 N = 1000 N = 1000 MAX 65 400 60 MAX 350 55 AVOL (V/mV) AVOL (V/mV) (Continued) 300 250 MEDIAN 50 MEDIAN 45 40 MIN 35 200 30 MIN 150 25 100 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 20 -40 120 FIGURE 36. AVOL vs TEMPERATURE, V+, V- = 2.5V, VO = -2V TO +2V, RL = 100k -20 0 20 40 60 80 TEMPERATURE (C) 100 120 FIGURE 37. AVOL vs TEMPERATURE, V+, V- = 2.5V, VO = -2V TO +2V, RL = 1k 4.92 4.9980 N = 1000 N = 1000 4.91 4.9975 4.90 4.88 VOUT (V) VOUT (V) MAX MAX 4.89 MEDIAN 4.87 4.86 4.9970 MEDIAN 4.9965 MIN MIN 4.9960 4.85 4.84 -40 -20 0 20 40 60 80 100 120 4.9955 -40 -20 0 FIGURE 38. VOUT HIGH vs TEMPERATURE, V+, V- =2.5V, RL = 1k 190 7.5 N = 1000 MAX 150 140 100 120 MAX MEDIAN 6.0 5.5 MEDIAN 5.0 120 MIN -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 40. VOUT LOW vs TEMPERATURE, V+, V- = 2.5V, RL = 1k 10 MIN 4.5 110 100 -40 80 N = 1000 6.5 160 130 60 7.0 VOUT (mV) VOUT (mV) 40 FIGURE 39. VOUT HIGH vs TEMPERATURE, V+, V- = 2.5V, RL = 100k 180 170 20 TEMPERATURE (C) TEMPERATURE (C) 4.0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 41. VOUT LOW vs TEMPERATURE, V+, V- = 2.5V, RL = 100k FN6377.2 February 11, 2008 ISL28158, ISL28258 45 IO- SHORT CIRCUIT CURRENT (mA) IO+ SHORT CIRCUIT CURRENT (mA) Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, RL = Open. N = 1000 40 MAX 35 MEDIAN 30 25 MIN 20 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 (Continued) -20 N = 1000 MAX -22 -24 MEDIAN -26 MIN -28 -30 -32 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) FIGURE 43. IO- SHORT CIRCUIT OUTPUT CURRENT vs TEMPERATURE VIN = +2.55V, RL = 10k, V+, V- = 2.5V FIGURE 42. IO+ SHORT CIRCUIT OUTPUT CURRENT vs TEMPERATURE VIN = -2.55V, RL = 10k, V+, V- = 2.5V Pin Descriptions ISL28158 (6 Ld SOT-23) 4 ISL28158 (8 Ld SOIC) ISL28258 (8 Ld SOIC) (8 Ld MSOP) PIN NAME FUNCTION 1, 5 NC Not connected 2 ININ- (A) IN- (B) inverting input 2 (A) 6 (B) EQUIVALENT CIRCUIT V+ IN- IN+ VCircuit 1 3 2 3 (A) 5 (B) IN+ IN+ (A) IN+ (B) 4 V- 3 4 Non-inverting input Negative supply See Circuit 1 V+ CAPACITIVELY COUPLED ESD CLAMP VCircuit 2 1 6 1 (A) 7 (B) OUT OUT (A) OUT (B) Output V+ OUT VCircuit 3 6 7 5 8 8 V+ Positive supply EN Chip enable See Circuit 2 V+ LOGIC PIN VCircuit 3 11 FN6377.2 February 11, 2008 ISL28158, ISL28258 Applications Information Enable/Disable Feature 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). 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. 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). 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: VIN 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. VOUT RIN RL + FIGURE 44. INPUT CURRENT LIMITING 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. 12 FN6377.2 February 11, 2008 ISL28158, ISL28258 Using Only One Channel Power Dissipation 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). 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) FIGURE 45. PREVENTING OSCILLATIONS IN UNUSED CHANNELS * 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 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. L (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 MDP0038 e1 D SOT-23 PACKAGE FAMILY A MILLIMETERS 6 N SYMBOL 4 E1 2 E 3 0.15 C D 1 2X 2 3 0.20 C 5 2X e 0.20 M C A-B D B b NX 0.15 C A-B 1 3 SOT23-5 SOT23-6 A 1.45 1.45 MAX A1 0.10 0.10 0.05 A2 1.14 1.14 0.15 b 0.40 0.40 0.05 c 0.14 0.14 0.06 D 2.90 2.90 Basic E 2.80 2.80 Basic E1 1.60 1.60 Basic e 0.95 0.95 Basic e1 1.90 1.90 Basic L 0.45 0.45 0.10 L1 0.60 0.60 Reference N 5 6 Reference D 2X TOLERANCE Rev. F 2/07 NOTES: C A2 2. Plastic interlead protrusions of 0.25mm maximum per side are not included. SEATING PLANE A1 0.10 C 1. Plastic or metal 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. NX 5. Index area - Pin #1 I.D. will be located within the indicated zone (SOT23-6 only). (L1) 6. SOT23-5 version has no center lead (shown as a dashed line). H A GAUGE PLANE c L 14 0.25 0 +3 -0 FN6377.2 February 11, 2008 ISL28158, ISL28258 Small Outline Package Family (SO) A D h X 45 (N/2)+1 N A PIN #1 I.D. MARK E1 E c SEE DETAIL "X" 1 (N/2) B L1 0.010 M C A B e H C A2 GAUGE PLANE SEATING PLANE A1 0.004 C 0.010 M C A B L b 0.010 4 4 DETAIL X MDP0027 SMALL OUTLINE PACKAGE FAMILY (SO) INCHES SYMBOL SO-14 SO16 (0.300") (SOL-16) SO20 (SOL-20) SO24 (SOL-24) SO28 (SOL-28) TOLERANCE NOTES A 0.068 0.068 0.068 0.104 0.104 0.104 0.104 MAX - A1 0.006 0.006 0.006 0.007 0.007 0.007 0.007 0.003 - A2 0.057 0.057 0.057 0.092 0.092 0.092 0.092 0.002 - b 0.017 0.017 0.017 0.017 0.017 0.017 0.017 0.003 - c 0.009 0.009 0.009 0.011 0.011 0.011 0.011 0.001 - D 0.193 0.341 0.390 0.406 0.504 0.606 0.704 0.004 1, 3 E 0.236 0.236 0.236 0.406 0.406 0.406 0.406 0.008 - E1 0.154 0.154 0.154 0.295 0.295 0.295 0.295 0.004 2, 3 e 0.050 0.050 0.050 0.050 0.050 0.050 0.050 Basic - L 0.025 0.025 0.025 0.030 0.030 0.030 0.030 0.009 - L1 0.041 0.041 0.041 0.056 0.056 0.056 0.056 Basic - h 0.013 0.013 0.013 0.020 0.020 0.020 0.020 Reference - 16 20 24 28 Reference - N SO-8 SO16 (0.150") 8 14 16 Rev. M 2/07 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 15 FN6377.2 February 11, 2008 ISL28158, ISL28258 Mini SO Package Family (MSOP) 0.25 M C A B D MINI SO PACKAGE FAMILY (N/2)+1 N E MDP0043 A E1 MILLIMETERS PIN #1 I.D. 1 B (N/2) e H C SEATING PLANE 0.10 C N LEADS SYMBOL MSOP8 MSOP10 TOLERANCE NOTES A 1.10 1.10 Max. - A1 0.10 0.10 0.05 - A2 0.86 0.86 0.09 - b 0.33 0.23 +0.07/-0.08 - c 0.18 0.18 0.05 - D 3.00 3.00 0.10 1, 3 E 4.90 4.90 0.15 - E1 3.00 3.00 0.10 2, 3 e 0.65 0.50 Basic - L 0.55 0.55 0.15 - L1 0.95 0.95 Basic - N 8 10 Reference - 0.08 M C A B b Rev. D 2/07 NOTES: 1. Plastic or metal protrusions of 0.15mm maximum per side are not included. L1 2. Plastic interlead protrusions of 0.25mm maximum per side are not included. A 3. Dimensions "D" and "E1" are measured at Datum Plane "H". 4. Dimensioning and tolerancing per ASME Y14.5M-1994. c SEE DETAIL "X" A2 GAUGE PLANE A1 L 0.25 3 3 DETAIL X 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