19-1195; Rev 1; 3/02 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps ________________________Applications Battery-Powered Devices pH Probes Portable Equipment Low-Power, Low-Voltage Equipment Medical Instruments Ionization Detectors Cellular Phones Pin Configurations Features ♦ UCSP Package (MAX4163) ♦ 1.0pA Typical Input Bias Current ♦ Single-Supply Operation from 2.7V to 10V ♦ Input Common-Mode Voltage Range Extends 250mV Beyond Either Supply Rail ♦ Rail-to-Rail Output Swing ♦ 200kHz Gain-Bandwidth Product ♦ 25µA Quiescent Current per Amplifier ♦ Excellent CMRR, PSRR, and Gain Linearity ♦ No Phase Reversal for Overdriven Inputs ♦ Unity-Gain Stable ♦ Stable with Any Capacitive Load ♦ Internally Short-Circuit Protected to Either Rail Ordering Information PART TEMP RANGE PINPACKAGE TOP MARK MAX4162ESA MAX4162EUK-T MAX4163EBL-T* MAX4163ESA MAX4163EUA MAX4164ESD -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C 8 SO 5 SOT23-5 8 UCSP-8 8 SO 8 µMAX 14 SO — AABX AAX — — — *UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and environment. Refer to the UCSP Reliability Notice in the UCSP Reliability section of this data sheet for more information. Typical Application Circuit TOP VIEW TOP VIEW (BUMPS SIDE DOWN) 1 2 3 OUTA VDD OUTB 3V IN+ OUT 1 5 VDD A VSS 2 B IN+ 3 4 INA- MAX4163 INB- C INA+ VSS MAX152 VSS IN- MAX6120 GND IN- +1.2V -1.2V IN- UCSP (B9-2) Pin Configurations continued at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola Ltd. UCSP is a trademark of Maxim Integrated Products, Inc. VREF+ R R INB+ SOT23 VDD 1/2 MAX4163 VOUT MAX4162 VDD VOUT VIN VDD VOUT 1/2 MAX4163 IN+ VREF- VSS VSS -3V MICROPOWER ±1.2V REFERENCE ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX4162/MAX4163/MAX4164 General Description The MAX4162/MAX4163/MAX4164 are single/dual/quad, micropower operational amplifiers that combine an exceptional bandwidth to power consumption ratio with true rail-to-rail inputs and outputs. They consume a mere 25µA quiescent current per amplifier, yet achieve 200kHz gain-bandwidth product and are unity-gain stable while driving any capacitive load. The MAX4162/ MAX4163/MAX4164 operate from either a single supply (2.7V to 10V) or dual supplies (±1.35V to ±5V), with an input common-mode voltage range that extends 250mV beyond either supply rail. These amplifiers use a proprietary architecture to achieve a very high input commonmode rejection ratio without the midswing nonlinearities present in other Rail-to-Rail® op amps. This architecture also maintains high open-loop gain and output swing while driving substantial loads. The combination of excellent bandwidth/power performance, single-supply operation, and miniature footprint makes these op amps ideal for portable equipment and other low-power, single-supply applications. The single MAX4162 is available in 8-pin SO and space-saving 5-pin SOT23 packages. The MAX4163 is available in an 8pin ultra chip-scale package (UCSP™) and an 8-pin µMAX or SO package. The MAX4164 is available in a 14-pin SO package. MAX4162/MAX4163/MAX4164 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps ABSOLUTE MAXIMUM RATINGS Supply Voltage (VDD to VSS) ..................................................11V IN+, IN-, OUT Voltage ......................(VDD + 0.3V) to (VSS - 0.3V) Short-Circuit Duration (to either rail)...........................Continuous Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C)..............571mW 8-Pin SO (derate 5.88mW/°C above +70°C)..................471mW 8-Pin UCSP (derate 4.7mW/°C above +70°C) ...............379mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) ...............330mW 14-Pin SO (derate 8.00mW/°C above +70°C)................640mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS: 3V Operation (VDD = 3V, VSS = 0, VCM = VDD/2, VOUT = VDD/2, RL tied to VDD/2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Operating Voltage Range VDD Supply Current (Per Amplifier) IDD Input Bias Current (Note 2) CONDITIONS Inferred from PSRR test VOS MAX4163 MAX4164 TA = +25°C MAX UNITS 10.0 V 25 40 µA 1.0 100 pA ±0.5 ±3 TA = -40°C to +85°C ±4 TA = +25°C ±0.5 TA = -40°C to +85°C ±4 ±5 TA = +25°C ±0.5 TA = -40°C to +85°C mV ±5 ±6 Input Offset Voltage Tempco TCVOS 2 µV/°C Differential Input Resistance RIN >10 TΩ Input Common-Mode Voltage Range VCM Common-Mode Rejection Ratio Large-Signal Voltage Gain CMRR AV Inferred from CMRR test 70 100 85 120 VOUT V dB dB VDD - VOH 30 180 VOL - VSS 30 180 VDD - VOH 3 25 VOL - VSS 3 25 mV To either supply rail 15 Closed-Loop Output Resistance ROUT AV = 1V/V 0.1 Ω Power-Supply Rejection Ratio PSRR VDD = 2.7V to 10V 110 dB Gain-Bandwidth Product GBWP 200 kHz φM 60 degrees 12 dB Phase Margin ISC VDD + 0.25 RL = 10kΩ RL = 100kΩ Output Short-Circuit Current VSS 0.25 VCM = (VSS - 0.25V) to (VDD + 0.25V) RL = 10kΩ Output Voltage Swing Gain Margin GM Total Harmonic Distortion THD Slew Rate Turn-On Time f = 1kHz, VOUT = 2VP-P, RL = 100kΩ, AV = 1V/V tON 80 mA 0.02 % 115 V/ms VOUT = 1V to 2V step 50 µs VDD = 0 to 3V step, VIN = VDD/2, AV = 1V/V 20 µs SR Settling Time to 0.1% 2 TYP 2.7 IB MAX4162 Input Offset Voltage MIN _______________________________________________________________________________________ UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps (VDD = 3V, VSS = 0, VCM = VDD/2, VOUT = VDD/2, RL tied to VDD/2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Input Voltage-Noise Density SYMBOL en CONDITIONS MIN f = 1kHz TYP MAX UNITS 80 nV/√Hz Differential Input Capacitance 0.7 pF Input Common-Mode Capacitance 1.5 pF Internal Charge-Pump Frequency 700 kHz Charge-Pump Output Feedthrough 100 µVP-P ELECTRICAL CHARACTERISTICS: 5V Operation (VDD = 5V, VSS = 0, VCM = VDD/2, VOUT = VDD/2, RL tied to VDD/2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS TYP UNITS 10.0 V Supply Current (Per Amplifier) IDD 25 45 µA IB 1.0 100 pA ±0.5 ±3 ±0.5 ±4 MAX4162 Input Offset Voltage VOS MAX4163 MAX4164 2.7 MAX VDD Input Bias Current (Note 2) Inferred from PSRR test MIN Operating Voltage Range TA = +25°C TA = -40°C to +85°C ±4 TA = +25°C TA = -40°C to +85°C ±5 TA = +25°C ±0.5 TA = -40°C to +85°C mV ±5 ±6 Input Offset Voltage Tempco 2 µV/°C Differential Input Resistance >10 TΩ Input Common-Mode Voltage Range Common-Mode Rejection Ratio Large-Signal Voltage Gain VCM CMRR AV Inferred from CMRR test 70 100 dB 85 120 dB VOUT VDD - VOH 50 300 VOL - VSS 50 300 VDD - VOH 5 40 5 40 VOL - VSS mV To either supply rail 15 mA ROUT AV = 1V/V 0.1 Ω Power-Supply Rejection Ratio PSRR VDD = 2.7V to 10V 110 dB Gain-Bandwidth Product GBWP 200 kHz Phase Margin φM 60 degrees Gain Margin GM 12 dB Closed-Loop Output Resistance ISC V RL = 10kΩ RL = 100kΩ Output Short-Circuit Current VDD + 0.25 VCM = (VSS - 0.25V) to (VDD + 0.25V) RL = 10kΩ Output Voltage Swing VSS 0.25 80 _______________________________________________________________________________________ 3 MAX4162/MAX4163/MAX4164 ELECTRICAL CHARACTERISTICS: 3V Operation (continued) ELECTRICAL CHARACTERISTICS: 5V Operation (continued) (VDD = 5V, VSS = 0, VCM = VDD/2, VOUT = VDD/2, RL tied to VDD/2, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Total Harmonic Distortion Slew Rate SYMBOL CONDITIONS THD f = 1kHz, VOUT = 2VP-P, RL = 100kΩ, AV = 1V/V MIN TYP SR Settling Time to 0.1% MAX UNITS 0.02 % 115 V/ms VOUT = 1V to 2V step 70 µs 40 µs Turn-On Time tON VDD = 0 to 3V step, VIN = VDD/2, AV = 1V/V Input Voltage-Noise Density en f = 1kHz 80 nV/√Hz Differential Input Capacitance 0.7 pF Input Common-Mode Capacitance 1.5 pF Internal Charge-Pump Frequency 700 kHz Charge-Pump Output Feedthrough 100 µVP-P Note 1: All device specifications are 100% tested at TA = +25°C. Limits over the extended temperature range are guaranteed by design, not production tested. Note 2: Input bias current guaranteed by design, not production tested. __________________________________________Typical Operating Characteristics (VDD = 5V, VSS = 0, VCM = VDD/2, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE INPUT OFFSET VOLTAGE VARIATION vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. TEMPERATURE 15 10 VCC = 5V VCC = 3V 22 -10 20 18 16 2 3 4 5 6 7 SUPPLY VOLTAGE (V) 4 8 9 10 -50 -70 -90 -110 12 -130 -150 10 1 -30 14 5 0 30 10 VOS (µV) 20 24 MAX4162-03 26 SUPPLY CURRENT (µA) 25 50 MAX4162-02 28 MAX4162-01 30 SUPPLY CURRENT (µA) MAX4162/MAX4163/MAX4164 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps -40 -20 0 20 40 60 TEMPERATURE (°C) 80 100 1 2 3 4 5 6 7 SUPPLY VOLTAGE (V) _______________________________________________________________________________________ 8 9 10 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps INPUT OFFSET VOLTAGE VARIATION vs. COMMON-MODE VOLTAGE 750 130 MAX4162-05 6 MAX4162-04 1000 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 4 AV = 1 110 2 500 0 -250 -4 -6 70 50 -10 -750 30 -12 10 -14 -20 20 0 40 60 80 100 -0.5 1.5 2.5 3.5 4.5 5.5 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) POWER-SUPPLY REJECTION RATIO vs. TEMPERATURE COMMON-MODE REJECTION vs. TEMPERATURE OPEN-LOOP GAIN vs. TEMPERATURE 70 50 30 10 0 20 40 60 80 60 50 40 30 20 10 0 VDD = 3V OR 5V VCM = -0.25V TO VDD + 0.25V COMMON-MODE INPUT CAPACITANCE vs. COMMON-MODE VOLTAGE 10 1 0.1 -40 -20 80 10 100 1k 10k FREQUENCY (Hz) 100k 1M RL = 10kΩ 80 60 40 2.00 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) SHORT-CIRCUIT OUTPUT CURRENT vs. TEMPERATURE 1.75 1.50 1.25 40 35 VDD = 3V OR 5V SHORT TO EITHER SUPPLY RAIL 30 25 20 15 10 5 0 1.00 1 100 100 MAX4162-12b MAX4162-12a 100 RL = 100kΩ 120 0 OUTPUT IMPEDANCE vs. FREQUENCY 1000 VDD = 3V OR 5V 20 TEMPERATURE (°C) AV = 1 MAX4162-11 MAX4162-10 90 80 70 40 0 20 60 TEMPERATURE (°C) 10,000 140 100 100 COMMON-MODE INPUT CAPACITANCE (pF) -20 160 OPEN-LOOP GAIN (dB) 90 120 110 SHORT-CIRCUIT OUTPUT CURRENT (mA) MAX4162-09 110 0.1 0.1 COMMON-MODE VOLTAGE (V) 130 -40 0.5 TEMPERATURE (°C) COMMON-MODE REJECTION (dB) -40 MAX4162-13 -1000 PSRR (dB) -2 -8 -500 OUTPUT IMPEDANCE (Ω) 90 PSRR (dB) VOS (µV) VOS (µV) 0 250 MAX4162-08 INPUT OFFSET VOLTAGE vs. TEMPERATURE 0 1.25 2.50 3.75 COMMON-MODE VOLTAGE (V) 5.00 -40 -20 0 20 40 60 80 100 TEMPERATURE (°C) _______________________________________________________________________________________ 5 MAX4162/MAX4163/MAX4164 Typical Operating Characteristics (continued) (VDD = 5V, VSS = 0, VCM = VDD/2, TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (VDD = 5V, VSS = 0, VCM = VDD/2, TA = +25°C, unless otherwise noted.) 200 150 100 50 VDD = 5V LOAD TO VDD/2 90 80 VDD - VOUT(MAX) (mV) VOUT(MIN) (mV) VDD - VOUT(MAX) (mV) VDD = 3V OR 5V LOAD TO VDD/2 250 100 MAX4162-15 VDD = 3V OR 5V LOAD TO VDD/2 250 300 MAX4162-14 300 MAXIMUM OUTPUT VOLTAGE vs. TEMPERATURE (VDD = 5V) MINIMUM OUTPUT VOLTAGE vs. LOAD CURRENT 200 150 100 MAX4162-16 MAXIMUM OUTPUT VOLTAGE vs. LOAD CURRENT RL = 5kΩ 70 60 50 RL = 10kΩ 40 30 20 50 RL = 100kΩ 10 0 0.4 0.8 1.2 1.6 0.4 0.8 1.2 1.6 -40 2.0 20 40 60 80 MAXIMUM OUTPUT VOLTAGE vs. TEMPERATURE (VDD = 3V) MINIMUM OUTPUT VOLTAGE vs. TEMPERATURE (VDD = 3V) 20 0 RL = 100kΩ 0 40 20 60 80 100 -40 -20 0 20 40 60 TEMPERATURE (°C) TEMPERATURE (°C) NOISE VOLTAGE DENSITY vs. COMMON-MODE VOLTAGE NOISE VOLTAGE DENSITY vs. FREQUENCY 1kHz 80 60 10kHz 40 20 0.5 1.5 2.5 3.5 4.5 COMMON-MODE VOLTAGE (V) 5.5 MAX4162-19 RL = 100kΩ -40 -20 0 20 40 60 80 100 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 90 1 AV = 1 RL = 100kΩ 80 70 60 50 40 VP-P = 4.99V 0.1 VP-P = 1V 0.01 30 20 10 0.001 0 0 30 0 100 THD + N (%) 100Hz 80 MAX4162-21a 100 RL = 10kΩ 40 TEMPERATURE (°C) 100 NOISE VOLTAGE DENSITY (nV/√Hz ) MAX4162-20 120 50 10 0 -20 RL = 5kΩ 60 20 10 RL = 100kΩ 20 RL = 10kΩ 100 MAX4162-21b 40 70 RL = 5kΩ 40 30 VDD = 3V LOAD TO VDD/2 80 VOUT(MIN) (mV) VDD - VOUT(MAX) (mV) 60 VDD = 3V LOAD TO VDD/2 50 90 MAX4162-18 60 MAX4162-17 RL = 5kΩ RL = 10kΩ -0.5 0 MINIMUM OUTPUT VOLTAGE vs. TEMPERATURE (VDD = 5V) 80 -40 -20 TEMPERATURE (°C) 100 VOUT(MIN) (mV) 0 LOAD CURRENT (mA) VDD = 5V LOAD TO VDD/2 120 2.0 LOAD CURRENT (mA) 140 6 0 0 0 NOISE VOLTAGE DENSITY (nV/√Hz) MAX4162/MAX4163/MAX4164 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps 10 100 1k 10k FREQUENCY (Hz) 100k 1M 10 100 1k FREQUENCY (Hz) _______________________________________________________________________________________ 10k UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT VOLTAGE SWING f = 5kHz RL = 100kΩ CL = 0 AV = 1000 40 GAIN (dB) THD + N (%) GAIN 0.1 144 108 72 20 36 0 0 -36 PHASE -72 -108 -20 f = 1kHz 180 PHASE (degrees) AV = 1 RL = 100kΩ MAX4162-22 60 MAX4162-21c 1 GAIN AND PHASE vs. FREQUENCY (CL = 0) -144 -40 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 100 1k 10k 100k 1M PEAK-TO-PEAK OUTPUT VOLTAGE SWING (V) FREQUENCY (Hz) GAIN AND PHASE vs. FREQUENCY (CL = 500pF) GAIN AND PHASE vs. FREQUENCY (CL = 0.01µF) 40 180 20 108 36 0 0 RL = 100kΩ CL = 0.01µF AV = 1000 144 72 GAIN MAX4162-24 60 -36 GAIN 40 PHASE -108 -40 -180 100 1k 10k 108 20 36 0 0 -36 -72 -108 -20 PHASE -144 1 144 -72 -20 100k -144 -40 1M -180 1 100 1k 10k 100k 1M FREQUENCY (Hz) FREQUENCY (Hz) NONINVERTING SMALL-SIGNAL PULSE RESPONSE (VDD = 3V, CL = 0) NONINVERTING SMALL-SIGNAL PULSE RESPONSE (VDD = 3V, CL = 1500pF) MAX4162-25 MAX4162-26 IN 50mV/div IN 50mV/div OUT 50mV/div OUT 50mV/div 100µs/div VDD = 3V, VIN = 100mV, RL = 100kΩ to VDD/2, CL = 0 180 72 GAIN (dB) RL = 100kΩ CL = 500pF AV = 1000 PHASE (degrees) MAX4162-23 60 GAIN (dB) -180 1 PHASE (degrees) 0.01 100µs/div VDD = 3V, VIN = 100mV, RL = 100kΩ to VDD/2, CL = 1500pF _______________________________________________________________________________________ 7 MAX4162/MAX4163/MAX4164 Typical Operating Characteristics (continued) (VDD = 5V, VSS = 0, VCM = VDD/2, TA = +25°C, unless otherwise noted.) MAX4162/MAX4163/MAX4164 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps Typical Operating Characteristics (continued) (VDD = 5V, VSS = 0, VCM = VDD/2, TA = +25°C, unless otherwise noted.) NONINVERTING SMALL-SIGNAL PULSE RESPONSE (VDD = 5V, CL = 1500pF) NONINVERTING SMALL-SIGNAL PULSE RESPONSE (VDD = 5V, CL = 0) NONINVERTING LARGE-SIGNAL PULSE RESPONSE (VDD = 3V, CL = 0) MAX4162-28 MAX4162-27 MAX4162-29 IN 50mV/div IN 50mV/div IN 1V/div OUT 50mV/div OUT 50mV/div OUT 1V/div 100µs/div 100µs/div 100µs/div VDD = 5V, VIN = 100mV, RL = 100kΩ to VDD/2, CL = 1500pF VDD = 5V, VIN = 100mV, RL = 100kΩ to VDD/2, CL = 0 VDD = 3V, VIN = 2V, RL = 100kΩ to VDD/2, CL = 0 NONINVERTING LARGE-SIGNAL PULSE RESPONSE (VDD = 5V, CL = 0) NONINVERTING LARGE-SIGNAL PULSE RESPONSE (VDD = 3V, CL = 1500pF) MAX4162-31 MAX4162-30 IN 1V/div IN 2V/div OUT 1V/div OUT 2V/div 100µs/div VDD = 3V, VIN = 2V, RL = 100kΩ to VDD/2, CL = 1500pF 8 100µs/div VDD = 5V, VIN = 4V, RL = 100kΩ to VDD/2, CL = 0 _______________________________________________________________________________________ UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps NONINVERTING LARGE-SIGNAL PULSE RESPONSE (VDD = 5V, CL = 1500pF) MAX4163/MAX4164 CROSSTALK vs. FREQUENCY MAX4162-32 MAX4162-33 0 -20 IN 2V/div CROSSTALK (dB) -40 OUT 2V/div -60 -80 -100 -120 -140 -160 0.1 100µs/div 1 10 100 1000 FREQUENCY (kHz) VDD = 5V, VIN = 4V, RL = 100kΩ to VDD/2, CL = 1500pF Pin Description PIN MAX4162 MAX4163 MAX4164 NAME FUNCTION SO SOT23 SO/µMAX UCSP SO 1, 5, 8 — — — — 2 4 — — — IN- Amplifier Inverting Input 3 3 — — — IN+ Amplifier Noninverting Input 4 2 4 C2 11 VSS Negative Power Supply 6 1 — — — OUT Amplifier Output Positive Power Supply N.C. No Connection. Not internally connected. 7 5 8 A2 4 VDD — — 1 A1 1 OUTA — — 2 B1 2 INA- Amplifier A Inverting Input — — 3 C1 3 INA+ Amplifier A Noninverting Input — — 5 C3 5 INB+ Amplifier B Noninverting Input — — 6 B3 6 INB- Amplifier B Inverting Input — — 7 A3 7 OUTB Amplifier B Output — — — — 8 OUTC Amplifier C Output — — — — 9 INC- Amplifier C Inverting Input — — — — 10 INC+ Amplifier C Noninverting Input — — — — 12 IND+ Amplifier D Noninverting Input — — — — 13 IND- Amplifier D Inverting Input — — — — 14 OUTD Amplifier A Output Amplifier D Output _______________________________________________________________________________________ 9 MAX4162/MAX4163/MAX4164 Typical Operating Characteristics (continued) (VDD = 5V, VSS = 0, VCM = VDD/2, TA = +25°C, unless otherwise noted.) MAX4162/MAX4163/MAX4164 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps a) b) RAIL-TO-RAIL INPUT/OUTPUT VOLTAGE RANGE (VDD = 3V) RAIL-TO-RAIL INPUT/OUTPUT VOLTAGE RANGE (VDD = 2V) MAX4162-34 MAX4162-35 2V 3V IN 1V/div IN 0.667V/div 0 0 2V 3V OUT 1V/div OUT 0.667V/div 0 200µs/div 0 200µs/div VDD = 3V, VP-P = 3V, f = 1kHz, RL = 10kΩ VDD = 2V, VP-P = 2V, f = 1kHz, RL = 10kΩ Figure 1. Rail-to-Rail I/O: a) VDD = 3V; b) VDD = 2V LARGE CAPACITIVE-LOAD DRIVE MAX4162-36 500mV IN 200mV/div 0 500mV OUT 200mV/div 0 5µs/div AV = 1, CL = 1µF, RL = 100kΩ Figure 2. Large Capacitive-Load Drive __________Applications Information Rail-to-Rail Inputs and Outputs The MAX4162/MAX4163/MAX4164 input common-mode range extends 250mV beyond each of the supply rails, providing a substantial increase in dynamic range over other op amps (even many of those referred to as rail-torail). Although the minimum operating voltage is specified at 2.7V, the devices typically provide full rail-to-rail operation below 2.0V (Figure 1). These amplifiers do not 10 suffer from midswing common-mode-rejection degradation or crossover nonlinearity often encountered in other rail-to-rail op amps. Extremely low, 1.0pA input bias current makes these devices ideal for applications such as pH probes, electrometers, and ionization detectors. They are also protected against phase reversal (inferred from CMRR test) and latchup for input signals extending beyond the supply rails. The output stage achieves a lower output impedance than traditional rail-to-rail output stages, providing an output voltage range that typically swings within 150mV of the supply rails for 1mA loads. This architecture also maintains high open-loop gain and output swing while driving substantial loads. Output Loading and Stability These devices drive 1mA loads to within 150mV of the supply rails while consuming only 25µA of quiescent current. Internal compensation allows these amplifiers to remain unity-gain stable while driving any capacitive load (Figure 2). Internal Charge Pump An internal charge pump provides two internal supplies typically 2V beyond each rail. These internal rails allow the MAX4162/MAX4163/MAX4164 to achieve true railto-rail inputs and outputs, while providing excellent common-mode rejection, power-supply rejection ratios, and gain linearity. These charge pumps require no external components, and in most applications are entirely transparent to the user. Two characteristics may be visible to the user, depending on the application: ______________________________________________________________________________________ UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps 2) The charge pumps typically require up to 20µs on power-up to fully energize the internal supply rails (Figure 3). Power Supplies and Layout The MAX4162/MAX4163/MAX4164 are guaranteed to operate from a single 2.7V to 10.0V power supply, but full rail-to-rail operation typically extends below 2V. For single-supply operation, bypass the power supply with a 1µF capacitor in parallel with a 0.1µF ceramic capacitor. If operating from dual supplies, bypass each supply to ground. Good layout improves performance by decreasing the amount of stray capacitance at the op amp’s inputs and output. To decrease stray capacitance, minimize both trace and external component lead lengths, and place external components close to the op amp’s pins. UCSP Package Consideration For general UCSP package information and PC layout considerations, please refer to the Maxim Application Note (Wafer-Level Ultra-Chip-Board-Scale-Package). UCSP Reliability The UCSP represents a unique packaging form factor that may not perform equally to a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and usage environment. The user should closely review these areas when considering use of a UCSP. Performance through operating life test and moisture resistance remains uncompromised as it is primarily determined by the wafer-fabrication process. Mechanical stress performance is a greater consideration for a UCSP package. UCSPs are attached through direct solder contact to the user’s PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder joint contact integrity must be considered. Table 1 shows the testing done to characterize the UCSP reliability performance. In conclusion, the UCSP is capable of performing reliably through environmental stresses as indicated by the results in the table. Additional usage data and recommendations are detailed in the UCSP application note, which can be found on Maxim’s website at www.maxim-ic.com. Table 1. Reliability Test Data CONDITIONS DURATION NO. OF FAILURES PER SAMPLE SIZE Temperature Cycle -35°C to +85°C, -40°C to +100°C 150 cycles, 900 cycles 0/10, 0/200 Operating Life TA = +70°C 240h 0/10 Moisture Resistance -20°C to +60°C, 90% RH 240h 0/10 Low-Temperature Storage -20°C 240h 0/10 Low-Temperature Operational -10°C 24h 0/10 Solderability 8h steam age — 0/15 ESD ±2000V, Human Body Model — 0/5 High-Temperature Operating Life TJ = +150°C 168h 0/45 TEST ______________________________________________________________________________________ 11 MAX4162/MAX4163/MAX4164 1) The on-board charge pumps generate a small amount of 700kHz switching noise at the op amp’s output. The amplitude of this noise is typically 100µVP-P. The noise is not referred to the input, and is independent of amplifier gain. The charge-pump switching frequency is well beyond the amplifier’s 200kHz bandwidth, and is therefore unnoticeable in most applications. MAX4162/MAX4163/MAX4164 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps a) b) POWER-UP TRANSIENT (VDD = 3V) POWER-UP TRANSIENT (VDD = 5V) MAX4162-38 MAX4162-39 3V 5V IN 1.5V/div IN 2V/div 0 0 1.5V 2.5V OUT 750mV/div OUT 1V/div 0 0 100µs/div 100µs/div VDD = 3V, VIN = VDD/2, RL = 10kΩ, CL = 1500pF VDD = 5V, VIN = VDD/2, RL = 10kΩ, CL = 1500pF Figure 3. Power-Up Transient: a) VDD = 3V; b) VDD = 5V _____________________________________________Pin Configurations (continued) TOP VIEW N.C. 1 IN- 2 8 N.C. OUTA 1 7 VDD INA- 2 MAX4162 8 VDD 7 OUTB MAX4163 6 OUT INA+ 3 6 INB- VSS 4 5 N.C. VSS 4 5 INB+ SO/µMAX 14 OUTD INA- 2 13 IND- INA+ 3 IN+ 3 SO OUTA 1 VDD 4 12 IND+ MAX4164 INB+ 5 10 INC+ INB- 6 9 INC- OUTB 7 8 OUTC SO ___________________Chip Information MAX4162 TRANSISTOR COUNT: 291 MAX4163 TRANSISTOR COUNT: 496 MAX4164 TRANSISTOR COUNT: 992 12 11 VSS ______________________________________________________________________________________ UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps SOT5L.EPS ______________________________________________________________________________________ 13 MAX4162/MAX4163/MAX4164 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 9LUCSP, 3x3.EPS MAX4162/MAX4163/MAX4164 UCSP, Micropower, Single-Supply, 10V, Rail-to-Rail I/O Op Amps Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.