ISL28194_08

® ISL28194, ISL28195 Data Sheet October 1, 2008 FN6236.4 Ultra-Small, 330nA and 1µA Single Supply, Rail-to-Rail Input/Output (RRIO) Op Amps The ISL28194 and ISL28195 are micropower op amps optimized for low-power applications. The parts are designed for single-supply operation from 1.8V to 5.5V, making them suitable for applications with two 1.5V alkaline batteries. The ISL28194 consumes typically 330nA of supply current and the ISL28195 consumes typically 1µA of supply current. Both parts feature rail-to-rail input and output swing (RRIO), allowing for maximum battery usage. Equipped with a shutdown pin, both parts draw typically 2nA when off. The combination of small footprint, low power, single supply, and rail-to-rail operation make them ideally suited for all battery operated devices. Features • Typical Supply Current 330nA (ISL28194) • Typical Supply Current 1µA (ISL28195) • Ultra-Low Single-Supply Operation Down to +1.8V • Rail-to-Rail Input/Output Voltage Range (RRIO) • Maximum 2mV Offset Voltage • Maximum 60pA Input Bias Current • 3.5kHz Gain Bandwidth Product (ISL28194) • 10kHz Gain Bandwidth Product (ISL28195) • ENABLE Pin Feature • -40°C to +125°C Operation • Pb-Free (RoHS Compliant) Pinouts ISL28194, ISL28195 (6 LD SOT-23) TOP VIEW OUT 1 V- 2 IN+ 3 6 V+ 5 EN 4 IN- Applications • 2-Cell Alkaline Battery-Powered/Portable Systems • Window Comparators • Threshold Detectors/Discriminators • Mobile Communications • Low Power Sensors +- ISL28194, ISL28195 (6 LD 1.6X1.6X0.5 µTDFN) TOP VIEW IN- 1 +V- 2 IN+ 3 6 V+ 5 EN 4 OUT Ordering Information PART NUMBER ISL28194FHZ-T7* (Note 1) ISL28194FRUZ-T7* (Note 2) ISL28195FHZ-T7* (Note 1) ISL28195FRUZ-T7* (Note 2) NOTES: 1. 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. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate - e4 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. PART MARKING GABK M3 GABL M4 6 Ld SOT-23 6 Ld 1.6x1.6x0.5 µTDFN 6 Ld SOT-23 6 Ld 1.6x1.6x0.5 µTDFN PACKAGE Tape & Reel (Pb-Free) PKG. DWG. # MDP0038 L6.1.6x1.6A MDP0038 L6.1.6x1.6A *Please refer to TB347 for details on reel specifications. 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 © Intersil Americas Inc. 2007, 2008. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL28194, ISL28195 Absolute Maximum Ratings (TA = +25°C) Supply Voltage (V+, V-) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.75V Supply Turn On Voltage Slew Rate . . . . . . . . . . . . . . . . . . . . . 1V/μs Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA Differential Input Voltage . . . . . . . . . . . . . . . . V- - 0.5V to V+ + 0.5V ESD Rating Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3kV Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300V Thermal Information Thermal Resistance (Typical, Note 3) θJA (°C/W) 6 Ld SOT-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 6 Ld µTDFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117.52 Output Short-Circuit Duration . . . . . . . . . . . . . . . . . . . . . . .Indefinite Ambient Operating Temperature Range . . . . . . . . .-40°C to +125°C Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . +125°C 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. NOTE: 3. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. 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, TA = +25°C, Unless Otherwise Specified. Boldface limits apply over -40°C to +125°C. CONDITIONS MIN (Note 4) -2 -2.5 TYP -0.1 1.5 -60 -100 -80 -150 ISL28194; f = 0.1Hz to 10Hz ISL28195; f = 0.1Hz to 10Hz 10 15 10 4 265 150 0.7 0.42 0 70 70 55 70 70 75 100 90 100 115 25 50 4.96 4.93 4.975 4.94 1.2 4.2 3.5 10 40 70 5 60 100 80 150 MAX (Note 4) 2 2.5 UNIT mV mV µV/°C pA pA pA pA µVP-P µVP-P nV/√Hz nV/√Hz pA/√Hz pA/√Hz V dB dB dB dB mV mV V V V/ms V/ms kHz kHz PARAMETER VOS Δ V OS --------------ΔT IOS IB eN DESCRIPTION Input Offset Voltage Input Offset Voltage vs Temperature Input Offset Current Input Bias Current Input Noise Voltage Peak-to-Peak Input Noise Voltage Density ISL28194 ISL28195 fo = 100Hz fo = 1kHz fo = 100Hz fo = 1kHz iN Input Noise Current Density ISL28194 ISL28195 CMIR CMRR Common Mode Input Range Common-Mode Rejection Ratio Established by CMRR test VCM = 0.5V to 3.5V VCM = 0V to 5V PSRR AVOL VOUT Power Supply Rejection Ratio Large Signal Voltage Gain Maximum Output Voltage Swing RL terminated to V+/2 V+ = 1.8V to 5.5V VO = 0.5V to 3.5V, RL = 100kΩ, RL = 10kΩ Output low, RL = 100kΩ Output low, RL = 10kΩ Output high, RL = 100kΩ Output high, RL = 10kΩ SR Slew Rate ISL28194 ISL28195 ±1.5V, AV = 2 GBW Gain Bandwidth Product Gain Bandwidth Product ISL28194; AV = 101; RL = 10kΩ ISL28195; AV = 101; RL = 10kΩ 2 FN6236.4 October 1, 2008 ISL28194, ISL28195 Electrical Specifications V+ = 5V, V- = 0V, VCM = 2.5V, TA = +25°C, Unless Otherwise Specified. Boldface limits apply over -40°C to +125°C. (Continued) CONDITIONS ISL28194 ISL28195 IS,OFF ISC+ ISCV+ ENABLE INPUT VINH VINL IENH IENL NOTE: 4. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. Enable Pin High Level Enable Pin Low Level Enable Pin Input Current Enable Pin Input Current VEN = 5V VEN = 0V 30 30 (V+)x(0.8) 0.4 150 200 150 200 V V nA nA Supply Current, Disabled Short Circuit Sourcing Capability Short Circuit Sinking Capability RL terminated to V+/2 Supply Voltage Range EN = 0.4V R L = 10 Ω RL = 10Ω 9 11 1.8 MIN (Note 4) TYP 330 1 2 11 12 5.5 MAX (Note 4) 450 500 1.3 1.5 20 50 UNIT nA µA nA nA mA mA V PARAMETER IS,ON DESCRIPTION Supply Current, Enabled Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 1 0 -1 -2 GAIN (dB) GAIN (dB) -3 -4 -5 -6 -7 -8 -9 10 100 1k 10k FREQUENCY (Hz) V+ = 5V RL = 10k AV = +1 VOUT = 10mVP-P GAIN 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 V + = 5V RL = 10k AV = +1 VOUT = 10mVP-P 10 100 1k FREQUENCY (Hz) 10k 100k GAIN FIGURE 1. ISL28194 CLOSE LOOP GAIN vs FREQUENCY FIGURE 2. ISL28195 CLOSE LOOP GAIN vs FREQUENCY 3 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 10 0 -10 CMRR (dB) -20 -30 -40 -50 -60 10 100 1k FREQUENCY (Hz) 10k V + = 5V RL = 10k AV = +1 VSOURCE = 1VP-P 10 0 CMRR -10 CMRR (dB) -20 -30 -40 -50 -60 10 100 1k FREQUENCY (Hz) 10k 100k V+ = 5V RL = 10k AV = +1 VSOURCE = 1VP-P (Continued) CMRR FIGURE 3. ISL28194 CMRR vs FREQUENCY FIGURE 4. ISL28195 CMRR vs FREQUENCY 10 V + = 5V 0 R = 10k L -10 AV = +1 VSOURCE = 1VP-P -20 PSRR (dB) -30 -40 -50 -60 -70 -80 10 100 1k FREQUENCY (Hz) 10k PSRR+ PSRR- 10 V + = 5V 0 RL = 10k -10 AV = +1 VSOURCE = 1VP-P -20 PSRR (dB) -30 -40 -50 -60 -70 -80 10 100 1k FREQUENCY (Hz) 10k 100k PSRR+ PSRR- FIGURE 5. ISL28194 PSRR vs FREQUENCY FIGURE 6. ISL28195 PSRR vs FREQUENCY 5 4 3 INPUT NOISE (µV) 2 1 0 -1 -2 -3 -4 -5 0 1 2 3 4 5 6 TIME (s) 7 8 9 10 V + = 5V RL = 10k AV = 1000 INPUT NOISE (µV) 3 2 1 0 -1 -2 -3 0 1 2 3 4 5 6 TIME (s) 7 8 9 10 V+ = 5V RL = 10k AV = 1000 FIGURE 7. ISL28194 0.1Hz TO 10Hz INPUT VOLTAGE NOISE FIGURE 8. ISL28195 0.1Hz TO 10Hz INPUT VOLTAGE NOISE 4 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 240 235 SUPPLY CURRENT (nA) 230 225 220 215 210 205 200 195 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 V + = 5V RL = INF AV = +1 770 V + = 5V 760 RL = INF AV = +1 750 740 730 720 710 700 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 (Continued) SUPPLY CURRENT (nA) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) FIGURE 9. ISL28194 SUPPLY CURRENT vs SUPPLY VOLTAGE FIGURE 10. ISL28195 SUPPLY CURRENT vs SUPPLY VOLTAGE 20 V + = 5V 18 R = 10Ω L 16 AV = +1 14 12 10 8 6 4 2 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SINK SOURCE 20 18 OUTPUT CURRENT (mA) 16 14 12 10 8 6 4 2 OUTPUT CURRENT (mA) V+ = 5V RL = 10 Ω AV = +1 SINK SOURCE 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) FIGURE 11. ISL28194 OUTPUT SHORT CIRCUIT CURRENT FIGURE 12. ISL28195 OUTPUT SHORT CIRCUIT CURRENT 0.007 0.005 OUTPUT VOLTAGE (mV) OUTPUT VOLTAGE (mV) INPUT 0.003 0.001 -0.001 -0.003 -0.005 V+, V- = ±2.5V RL = 10k AV = +1 VOUT = 10mVP-P -0.007 -3.00E-04 -1.00E-04 1.00E-04 3.00E-04 5.00E-04 7.00E-04 9.00E-04 OUTPUT 0.006 0.004 INPUT 0.002 0.000 -0.002 -0.004 -0.006 3.50E-04 V+, V- = ±2.5V RL = 10k AV = +1 VOUT = 10mVP-P 4.50E-04 5.50E-04 6.50E-04 7.50E-04 8.50E-04 OUTPUT TIME (ms) TIME (ms) FIGURE 13. ISL28194 SMALL SIGNAL TRANSIENT RESPONSE FIGURE 14. ISL28195 SMALL SIGNAL TRANSIENT RESPONSE 5 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 3 2 OUTPUT VOLTAGE (V) 1 0 -1 -2 -3 -2.0 V+, V- = ±2.5V RL = 10k AV = +1 3 2 LARGE SIGNAL OUTPUT VOLTAGE (V) 1 0 -1 -2 -3 V+, V- = ±2.5V RL = 10k AV = +1 (Continued) LARGE SIGNAL -10 0 10 20 30 40 50 60 70 80 -8 -6 -4 -2 TIME (ms) 0 2 4 TIME (ms) FIGURE 15. ISL28194 LARGE SIGNAL TRANSIENT RESPONSE FIGURE 16. ISL28195 LARGE SIGNAL TRANSIENT RESPONSE 6 5 ENABLE/OUTPUT (V) ENABLE/OUTPUT (V) 4 EN PIN 3 OUTPUT 2 1 0 -4 -2 0 2 4 6 V+ = 5V RL = 10k AV = +1 VIN = 3.5V 8 10 TIME (ms) 6 5 4 3 OUTPUT 2 1 0 -0.5 0 0.5 1.0 V+ = 5V RL = 10k AV = +1 VIN = 3.5V 1.5 2.0 TIME (ms) EN PIN FIGURE 17. ISL28194 ENABLE TO OUTPUT DELAY TIME FIGURE 18. ISL28195 ENABLE to OUTPUT DELAY TIME 6 5 ENABLE/OUTPUT (V) 4 3 2 EN PIN 3.5 V+ = 5V RL = 10k AV = +1 VIN = 3.5V 2.5 ENABLE/OUTPUT (V) 1.5 0.5 EN PIN V+ = 5V RL = 10k AV = +1 VIN = 3.5V OUTPUT -0.5 -1.5 -2.5 OUTPUT 1 0 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 -3.5 -0.5 0 0.5 1.0 1.5 2.0 TIME (µs) TIME (µs) FIGURE 19. ISL28194 DISABLE TO OUTPUT DELAY TIME FIGURE 20. ISL28195 DISABLE TO OUTPUT DELAY TIME 6 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 2.6 ENABLE THRESHOLD (V) 2.4 ENABLE THRESHOLD (V) 2.2 2.0 1.8 1.6 1.4 1.2 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 (Continued) SUPPLY VOLTAGE (V) FIGURE 21. ISL28194 ENABLE THRESHOLD VOLTAGE vs SUPPLY VOLTAGE FIGURE 22. ISL28195 ENABLE THRESHOLD VOLTAGE vs SUPPLY VOLTAGE 70 ENABLE TO OUTPUT DELAY (ms) 60 50 40 30 20 10 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) ENABLE TO OUTPUT DELAY (ms) 60 50 40 30 20 10 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) FIGURE 23. ISL28194 ENABLE TO OUTPUT DELAY TIME vs SUPPLY VOLTAGE FIGURE 24. ISL28195 ENABLE TO OUTPUT DELAY TIME vs SUPPLY VOLTAGE 50000 DISABLE TO OUTPUT DELAY (ns) 45000 40000 35000 30000 25000 20000 15000 10000 5000 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) DISABLE TO OUTPUT DELAY (ns) 25000 20000 15000 10000 5000 0 1.5 2.0 2.5 3.0 3.5 4.0 SUPPLY VOLTAGE (V) 4.5 5.0 FIGURE 25. ISL28194 ENABLE LOW TO OUTPUT TURN-OFF TIME vs SUPPLY VOLTAGE FIGURE 26. ISL28195 ENABLE LOW TO OUTPUT TURN-OFF TIME vs SUPPLY VOLTAGE 7 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 450 N = 1000 SUPPLY CURRENT (nA) 400 MAX SUPPLY CURRENT (µA) 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 -40 MIN MEDIAN MAX N = 1000 (Continued) 350 MEDIAN 300 250 MIN 200 -40 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 27. ISL28194 SUPPLY CURRENT ENABLED vs TEMPERATURE, V+ = 5V, V- = 0V FIGURE 28. ISL28195 SUPPLY CURRENT ENABLED vs TEMPERATURE, V+ = 5V, V- = 0V 35 30 25 IBIAS + (pA) 20 15 10 N = 1000 40 35 30 MAX IBIAS + (pA) 25 20 15 10 N = 1000 MAX MEDIAN MEDIAN 5 0 -40 MIN -20 0 20 40 60 80 100 120 MIN 5 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) TEMPERATURE (°C) FIGURE 29. ISL28194 IBIAS + vs TEMPERATURE, V+ = 5V FIGURE 30. ISL28195 IBIAS + vs TEMPERATURE, V+ = 5V 30 N = 1000 N=1000 25 MAX 20 IBIAS - (pA) IBIAS - (pA) 15 MEDIAN 10 5 0 -5 -40 MIN 40 35 30 25 20 15 10 5 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 0 -40 N = 1000 MAX MEDIAN MIN -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 31. ISL28194 IBIAS vs TEMPERATURE, V+ = 2.4V FIGURE 32. ISL28195 IBIAS vs TEMPERATURE, V+ = 2.4V 8 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 30 N = 1000 20 MAX 10 IOS (pA) IOS (pA) 0 MEDIAN -10 -20 -30 -40 6 4 2 0 -2 -4 -6 -8 -10 -12 MIN -20 0 20 40 60 80 100 120 -14 -16 -40 -20 0 MIN MEDIAN MAX N = 1000 (Continued) TEMPERATURE (°C) 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 33. ISL28194 IOS vs TEMPERATURE, V+ = 5V FIGURE 34. ISL28195 IOS vs TEMPERATURE, V+ = 5V -30 -50 -70 VOS (µV) -90 -110 -130 -150 -170 -40 N = 1000 25 -25 -75 VOS (µV) MEDIAN VIN = 2.5V -125 -175 -225 -275 -325 N = 1000 MEDIAN VIN = 2.5V MEDIAN VIN = 4.7V MEDIAN VIN = 4.7V -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 -375 -40 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 35. ISL28194 VOS vs TEMPERATURE, V+ = 5V VIN = 2.5V, 4.7V FIGURE 36. ISL28195 VOS vs TEMPERATURE, V+ = 5V VIN = 2.5V, 4.7V 0 -20 -40 -60 VOS (µV) -80 -100 -120 -140 -160 -180 -200 -40 N = 1000 -95 N = 1000 -135 MEDIAN VIN = 1.5V -175 VOS (µV) -215 -255 -295 -335 -375 -40 MEDIAN VIN = 0.3V MEDIAN VIN = 1.5V MEDIAN VIN = 0.3V -20 0 20 40 60 80 100 120 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) TEMPERATURE (°C) FIGURE 37. ISL28194 VOS vs TEMPERATURE, V+ = 1.8V, VIN = 1.5V, 0.3V FIGURE 38. ISL28195 VOS vs TEMPERATURE, V+ = 1.8V, VIN = 1.5V, 0.3V 9 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 100 98 96 CMRR (dB) 94 92 90 88 86 84 -40 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 MEDIAN VCM: +5.1V TO -0.1V MEDIAN VCM: +1.0V TO -2.0V CMRR (dB) 100 N = 1000 98 96 94 92 90 88 86 84 -40 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 MEDIAN VCM: +5.1V TO -0.1V MEDIAN VCM: +1.0V TO -2.0V N = 1000 (Continued) FIGURE 39. ISL28194 CMRR vs TEMPERATURE, VCM = +1.0V TO -2.0V, +5.1V TO -0.1V FIGURE 40. ISL28195 CMRR vs TEMPERATURE, VCM = +1.0V TO -2.0V, +5.1V TO -0.1V 140 130 120 PSRR (dB) 110 100 90 80 70 60 50 -40 -20 0 20 40 60 80 TEMPERATURE (°C) MIN MAX N = 1000 PSRR (dB) MEDIAN 100 120 180 170 N = 1000 160 150 140 130 120 110 100 90 80 70 60 -40 -20 MAX MEDIAN MIN 0 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 41. ISL28194 PSRR vs TEMPERATURE, V+, V- = ±0.9V TO ±2.5V FIGURE 42. ISL28195 PSRR vs TEMPERATURE, V+, V- = ±0.9V TO ±2.5V 118 116 114 112 110 108 106 -40 N = 1000 123.0 122.5 122.0 121.5 AVOL (dB) MEDIAN RL = 100k 121.0 120.5 120.0 119.5 119.0 118.5 N = 1000 AVOL (dB) MEDIAN RL = 100k MEDIAN RL = 10k MEDIAN RL = 10k -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 118.0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) FIGURE 43. ISL28194 AVOL vs TEMPERATURE, V+ = 5V FIGURE 44. ISL28195 AVOL vs TEMPERATURE, V+ = 5V 10 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 94 92 90 AVOL (dB) 88 86 84 82 80 78 76 -40 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 93.0 92.5 -40 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 MEDIAN RL = 10k N = 1000 MEDIAN RL = 100k 96.0 N = 1000 95.5 95.0 AVOL (dB) 94.5 94.0 93.5 MEDIAN RL = 10k (Continued) MEDIAN RL = 100k FIGURE 45. ISL28194 AVOL vs TEMPERATURE, V+ = 1.8V FIGURE 46. ISL28195 AVOL vs TEMPERATURE, V+ = 1.8V 4.995 4.990 4.985 4.980 VOUT (V) 4.975 4.970 4.965 4.960 4.955 4.950 -40 4.981 N = 1000 4.980 MAX VOUT (V) 4.979 4.978 4.977 4.976 4.975 MIN 4.974 100 120 4.973 -40 N = 1000 MAX MEDIAN MEDIAN MIN -20 0 20 40 60 80 TEMPERATURE (°C) -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 47. ISL28194 VOUT HIGH vs TEMPERATURE, V+ = 5V, RL = 100k FIGURE 48. ISL28195 VOUT HIGH vs TEMPERATURE, V+ = 5V, RL = 100k 4.944 4.942 4.940 4.938 VOUT (V) 4.936 4.934 4.932 4.930 4.928 4.948 N = 1000 MAX 4.946 4.944 VOUT (V) MEDIAN N = 1000 MEDIAN 4.942 4.940 MAX MIN 4.938 4.936 -40 MIN 4.926 -40 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 49. ISL28194 VOUT HIGH vs TEMPERATURE, V+ = 5V, RL = 10k FIGURE 50. ISL28195 VOUT HIGH vs TEMPERATURE, V+ = 5V, RL = 10k 11 FN6236.4 October 1, 2008 ISL28194, ISL28195 Typical Performance Curves V+ = 5V, V- = 0V, VCM = 2.5V, Unless Otherwise Specified. 35 23 N = 1000 MAX 21 MAX 19 VOUT (mV) 25 MEDIAN 20 MIN 15 VOUT (mV) 17 MEDIAN 15 13 MIN 11 9 -40 N = 1000 (Continued) 30 10 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 51. ISL28194 VOUT LOW vs TEMPERATURE, V+, V- = ±2.5V, RL = 100k 57 56 55 54 VOUT (mV) 53 52 51 50 49 48 47 -40 -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 MIN MEDIAN MAX FIGURE 52. ISL28195 VOUT LOW vs TEMPERATURE, V+, V- = ±2.5V, RL = 100k N = 1000 59 57 VOUT (mV) 55 53 51 N = 1000 MAX MEDIAN 49 47 45 -40 MIN -20 0 20 40 60 80 TEMPERATURE (°C) 100 120 FIGURE 53. ISL28194 VOUT LOW vs TEMPERATURE V+, V- = ±2.5V, RL = 10k FIGURE 54. ISL28195 VOUT LOW vs TEMPERATURE V+, V- = ±2.5V, RL = 10k Pin Descriptions ISL28194, ISL28194, ISL28195 ISL28195 (6 LD SOT-23) (6 LD µTDFN) 1 2 3 4 5 6 4 2 3 1 5 6 EQUIVALENT CIRCUIT Circuit 3 Circuit 4 Circuit 1 Circuit 1 Circuit 2 Circuit 4 Amplifier output Negative power supply Amplifier non-inverting input Amplifier inverting input Amplifier enable pin; Logic “1” selects the enabled state, Logic “0” selects the disabled state. Positive power supply V+ V+ INLOGIC PIN VCIRCUIT 2 CIRCUIT 3 V+ 100Ω OUT VVCIRCUIT 4 PIN NAME OUT_A VIN+ INEN V+ DESCRIPTION V+ CAPACITIVELY COUPLED ESD CLAMP IN+ V- CIRCUIT 1 12 FN6236.4 October 1, 2008 ISL28194, ISL28195 AC Test Circuits 1k 5V + VIN EN V+/2 10k VOUT VIN EN VCM = V+/2 10 + 10k VOUT 5V FIGURE 55. TEST CIRCUIT FOR AV = +1 FIGURE 56. TEST CIRCUIT FOR AV = +101 Applications Information Introduction The ISL28194 and ISL28195 are CMOS rail-to-rail input and output (RRIO) micropower operational amplifiers. These devices are designed to operate from single supply (1.8V to 5.5V) and have an input common mode range that extends to the positive rail and to the negative supply rail for true rail-to-rail performance. The CMOS output can swing within tens of millivolts to the rails. Featuring worst-case maximum supply currents of 0.5µA and 1.5µA for the ISL28194 and ISL28195 respectively, these amplifiers are ideally suited for solar and battery-powered applications. In the disabled state (output in a high impedance state), the supply current is reduced to typical of only 2nA. By disabling the devices, multiple 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 EN pin should never be left floating. The EN pin should be connected directly to the V+ supply when not in use. The loading effects of the feedback resistors of the disabled amplifier must be considered when multiple amplifier outputs are connected together. Proper Layout Maximizes Performance To achieve the maximum performance of the high input impedance, care should be taken in the circuit board layout. The PC board surface must remain clean and free of moisture to avoid leakage currents between adjacent traces. Surface coating of the circuit board will reduce surface moisture and provide a humidity barrier, reducing parasitic resistance on the board. When input leakage current is a concern, the use of guard rings around the amplifier inputs will further reduce leakage currents. Figure 57 shows a guard ring example for a unity gain amplifier that uses the low impedance amplifier output at the same voltage as the high impedance input to eliminate surface leakage. The guard ring does not need to be a specific width, but it should form a continuous loop around both inputs. For further reduction of leakage currents, components can be mounted to the PC board using Teflon standoff insulators. HIGH IMPEDANCE INPUT IN V+ 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. Both the ISL28194 and ISL28195 have a maximum input differential voltage that includes the rails (-V -0.5V to +V +0.5V). Rail-to-Rail Output A pair of complementary MOSFET devices are used to achieve the rail-to-rail output swing. The NMOS sinks current to swing the output in the negative direction. The PMOS sources current to swing the output in the positive direction. The ISL28194 and ISL28195 will typically swing to within 40mV or less to either rail with a 100kΩ load (reference Figures 49 through 52). Enable/Disable Feature Both parts offer an EN pin that enables the device when pulled high. The enable threshold is referenced to the -V terminal and has a level proportional to the total supply voltage (reference Figures 21 and 22 for EN threshold vs supply voltage). The enable circuit has a delay time that changes as a function of supply voltage. Figures 23 through 26 show the effect of supply voltage on the enable and disable times. For supply voltages less than 3V, it is recommended that the user account for the increase enable/disable delay time. FIGURE 57. GUARD RING EXAMPLE FOR UNITY GAIN AMPLIFIER 13 FN6236.4 October 1, 2008 ISL28194, ISL28195 Power Dissipation 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 to remain in the safe operating area. These parameters are related in Equation 1: T JMAX = T MAX + ( θ 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 as shown in Equation 2: V OUTMAX PD MAX = 2*V S × I SMAX + ( V S - V OUTMAX ) × --------------------------RL (EQ. 2) where: • TMAX = Maximum ambient temperature • θJA = 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 14 FN6236.4 October 1, 2008 ISL28194, ISL28195 Ultra Thin Dual Flat No-Lead Plastic Package (UTDFN) E 6 4 A A B L6.1.6x1.6A 6 LEAD ULTRA THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE MILLIMETERS SYMBOL MIN 0.45 NOMINAL 0.50 0.127 REF 0.15 1.55 0.40 1.55 0.95 0.20 1.60 0.45 1.60 1.00 0.50 BSC 0.25 0.30 0.35 0.25 1.65 0.50 1.65 1.05 MAX 0.55 0.05 NOTES 4 4 Rev. 1 6/06 NOTES: 1. Dimensions are in MM. Angles in degrees. 2. Coplanarity applies to the exposed pad as well as the terminals. Coplanarity shall not exceed 0.08mm. PIN 1 REFERENCE 2X 0.15 C 1 2X 0.15 C TOP VIEW e 1.00 REF 4 6 3 D A A1 A3 A1 b D D2 L D2 CO.2 DAP SIZE 1.30 x 0.76 E E2 e L 3 E2 1 b 6X 0.10 M C A B BOTTOM VIEW DETAIL A 0.10 C 6X 0.08 C A3 SIDE VIEW C SEATING PLANE 3. Warpage shall not exceed 0.10mm. 4. Package length/package width are considered as special characteristics. 5. JEDEC Reference MO-229. 6. For additional information, to assist with the PCB Land Pattern Design effort, see Intersil Technical Brief TB389. 0.127±0.008 0.127 +0.058 -0.008 TERMINAL THICKNESS A1 DETAIL A 0.25 0.50 1.00 0.45 1.00 2.00 0.30 1.25 LAND PATTERN 6 15 FN6236.4 October 1, 2008 ISL28194, ISL28195 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 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 FN6236.4 October 1, 2008