19-5338; Rev 0; 8/10 Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps Features The MAX9613/MAX9615 are low-power precision op amps with rail-to-rail inputs and rail-to-rail outputs. They feature precision MOS inputs powered from an internal charge pump to eliminate crossover distortion that is common to complementary input-pair type amplifier architectures. These devices are ideal for a large number of signal processing applications such as photodiode transimpedance amplifiers and filtering/amplification of a wide variety of signals in industrial equipment. The devices also feature excellent RF immunity, making them ideal for portable applications. S VCC = 1.7V to 5.5V (0C to +70C) S VCC = 1.8V to 5.5V (-40C to +125C) S Low 100V (max) VOS S Rail-to-Rail Inputs and Outputs S Low 220A Supply Current, 1A in Shutdown S Autotrim Offset Calibration S 2.8MHz Bandwidth S Excellent RF Immunity The MAX9613/MAX9615 feature a self-calibration system (on power-up), eliminating the effects of temperature and power-supply variations. The MAX9613/MAX9615 are capable of operating from a 1.7V to 5.5V supply voltage over the 0NC to +70NC temperature range, and from 1.8V to 5.5V over the -40NC to +125NC automotive temperature range. Both singles and duals are available in tiny SC70 packages. The MAX9613 features a high-impedance output while in shutdown. Ordering Information TEMP RANGE PINPACKAGE TOP MARK MAX9613AXT+T -40NC to +125NC 6 SC70 +ADK MAX9615AXA+T -40NC to +125NC 8 SC70 +AAD PART +Denotes lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Applications Notebooks, Portable Media Players Industrial and Medical Sensors General Purpose Signal Processing Typical Application Circuit 15nF +3.3V 2.4kI 22kI 10kI 330pF ADC 3.3nF MAX11613 MAX9613 CORNER FREQUENCY = 10kHz SALLEN-KEY FILTER ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. MAX9613/MAX9615 General Description MAX9613/MAX9615 Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps ABSOLUTE MAXIMUM RATINGS IN+, IN-, SHDN, VCC to GND..................................-0.3V to +6V OUT to GND.............................................. -0.3V to (VCC + 0.3V) Short-Circuit (GND) Duration to Either Supply Rail.................. 5s Continuous Input Current (any pin).................................. Q20mA Thermal Limits (Note 1) Multilayer PCB Continuous Power Dissipation (TA = +70NC) 6-Pin SC70 (derate 3.1mW/NC above +70NC)..............245mW BJA. ......................................................................326.5NC/W BJC. .........................................................................115NC/W 8-Pin SC70 (derate 3.1mW/NC above +70NC)..............245mW BJA. ......................................................................... 326NC/W BJC. .........................................................................115NC/W Operating Temperature Range......................... -40NC to +125NC Storage Temperature Range............................. -65NC to +150NC Junction Temperature......................................................+150NC Lead Temperature (soldering, 10s).................................+300NC Soldering Temperature (reflow).......................................+260NC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. 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 (VCC = VSHDN = 3.3V, VIN+ = VIN- = VCM = 0V, RL = 10kI to VCC/2, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS VCC + 0.1 V DC CHARACTERISTICS Input Voltage Range VIN+, VIN- Guaranteed by CMRR test -0.1 23 TA = +25NC Input Offset Voltage Input Offset Voltage Drift Input Bias Current (Note 3) Common-Mode Rejection Ratio VOS 150 TA = -40NC to +125NC 750 VOS - TC IB CMRR TA = +40C to +25C TA = +70C 1 7 FV/NC 1.55 45 pA TA = +85C 135 TA = +125C VCM = -0.1V to VCC + 0.1V, TA = +25NC 1.55 VCM = -0.1V to VCC + 0.1V, TA = -40NC to +125NC 82 IOS Open-Loop Gain AOL Output Short-Circuit Current (Note 4) ISC dB 80 0.5 Output Voltage Low VOL 7 TA = +85C 25 To GND pA 400 99 120 dB 275 mA 75 RL = 10kI 0.011 RL = 600I 0.1 RL = 32I nA 100 TA = +70C TA = +125C +0.4V P VOUT P VCC - 0.4V, RL = 10kI To VCC FV 1 TA = +40C to +25C Input Offset Current (Note 3) 100 TA = -40NC to +125NC after power-up autocalibration 0.170 2 _______________________________________________________________________________________ V Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps (VCC = VSHDN = 3.3V, VIN+ = VIN- = VCM = 0V, RL = 10kI to VCC/2, TA = -40NC to +125NC. Typical values are at TA = +25NC, unless otherwise noted.) (Note 2) PARAMETER Output Voltage High SYMBOL VOH CONDITIONS MIN RL = 10kI VCC 0.011 RL = 600I VCC 0.1 TYP MAX UNITS V RL = 32I VCC 0.560 f = 10kHz 28 AC CHARACTERISTICS Input Voltage Noise Density Input Voltage Noise en Total noise 0.1Hz P f P 10Hz Input Current Noise Density Gain Bandwidth In f = 10kHz 0.1 GBW Slew Rate SR Capacitive Loading Total Harmonic Distortion CLOAD THD nV/Hz FVP-P 5 2.8 fA/Hz MHz 1.3 V/Fs No sustained oscillation 200 pF f = 10kHz, VOUT = 2VP-P, AV = 1V/V 85 dB POWER-SUPPLY CHARACTERISTICS Power-Supply Range Power-Supply Rejection Ratio Quiescent Current VCC PSRR ICC Shutdown Supply Current Guaranteed by PSRR 1.8 5.5 TA = 0NC to +70NC, guaranteed by PSSR 1.7 5.5 TA = +25NC 85 TA = -40NC to +125NC 83 Per amplifier MAX9613 only Shutdown Input Low Shutdown Input High VIH MAX9613 only Turn-On Time from SHDN Power-Up Time dB 305 420 MAX9613 only ROUT_SHDN MAX9613 only MAX9613 only tON tUP 220 Per amplifier, TA = +25NC ISHDN VIL Output Impedance in Shutdown 106 1.4 V FA 1 FA 0.5 V V 10 MI 20 Fs 10 ms Note 2: All devices are 100% production tested at TA = +25NC. Temperature limits are guaranteed by design. Note 3: Guaranteed by design, not production tested. Note 4: Do not exceed package thermal dissipation in the Absolute Maximum Ratings section. _______________________________________________________________________________________ 3 MAX9613/MAX9615 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (VCC = 3.3V, VIN+ = VIN- = 0V, VCM = VCC/2, RL = 10kI to VCC/2, values are at TA = +25NC, unless otherwise noted.) OFFSET VOLTAGE vs. COMMON-MODE VOLTAGE vs. TEMPERATURE 0 TA = +85C -50 TA = +125C -100 30 40 30 20 20 15 5 0 0 25 10 -200 0 1.5 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0 10 20 30 40 50 COMMON-MODE VOLTAGE (V) SUPPLY VOLTAGE (V) OFFSET VOLTAGE (V) SUPPLY CURRENT vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. TEMPERATURE INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE 200 150 100 200 150 100 10,000 1000 TA = +125C 100 0.1 0 0 0.01 TA = -40C -50 -25 0 25 50 75 100 0 125 0.5 TA = 0C 1.0 1.5 COMMON-MODE VOLTAGE (V) INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE INPUT BIAS CURRENT vs. TEMPERATURE POWER-UP TRANSIENT 0 -0.2 -0.4 -0.6 MAX9613 toc08 VCM = 0V INPUT BIAS CURRENT (pA) 0.2 10 VOUT 200mV/div 1 GND 0.1 VCC 2V/div GND -0.8 -1.0 0.01 1.0 1.5 2.0 2.5 3.0 COMMON-MODE VOLTAGE (V) 3.5 4.0 3.0 MAX9613 toc09 100 MAX9613 toc07 0.4 0.5 2.5 TEMPERATURE (C) 0.6 0 2.0 SUPPLY VOLTAGE (V) TA = +25C 0.8 TA = +25C 1 50 1.0 TA = +85C 10 50 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 60 MAX9613 toc06 250 SUPPLY CURRENT (A) 250 RLOAD = NO LOAD INPUT BIAS CURRENT (pA) RLOAD = NO LOAD MAX9613 toc05 300 MAX9613 toc04 300 SUPPLY CURRENT (A) 35 10 -150 -0.5 MAX9613 toc03 50 OCCURANCE (%) TA = -40C 50 OFFSET VOLTAGE HISTOGRAM 40 MAX9613 toc02 TA = +25C OFFSET VOLTAGE (V) OFFSET VOLTAGE (V) 100 OFFSET VOLTAGE vs. SUPPLY VOLTAGE 60 MAX9613 toc01 150 INPUT BIAS CURRENT (pA) MAX9613/MAX9615 Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps -50 -25 0 25 50 75 100 125 4ms/div TEMPERATURE (C) 4 _______________________________________________________________________________________ Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps 60 40 20 90 80 70 60 50 40 30 20 0.25 0.20 0.15 0.10 0.05 10 0 10 100 0 100 1000 10,000 100k 1k 10k FREQUENCY (Hz) FREQUENCY (kHz) MAX9613 toc13 TOTAL HARMONIC DISTORTION (dB) -60 VOUT 200mV/div GND VCC 2V/div GND VIN = 2VP-P AV = 1V/V -70 -90 -100 -110 -120 10 OUTPUT HIGH VOLTAGE vs. OUTPUT SOURCE CURRENT 3.1 TA = +25C 3.0 TA = +85C 2.9 2.8 2.7 TA = +125C 2.6 15 20 25 30 100k -20 -40 -60 -80 -100 -120 10 100 1k 10k 0.1Hz TO 10Hz NOISE 100k TA = +85C MAX9613-15 toc17 MAX9613 toc18 VOUT 1V/div TA = +125C 0.08 0.06 TA = +25C 0.04 0 10 VIN = 2VP-P AV = 1V/V OUTPUT LOW VOLTAGE vs. OUTPUT SINK CURRENT 0.10 2.4 OUTPUT SOURCE CURRENT (mA) 0 FREQUENCY (Hz) 0.12 0.02 5 100k 10k 0.14 2.5 0 10k FREQUENCY (Hz) 0.16 OUTPUT LOW VOLTAGE (V) TA = -40C 3.2 1k 0.18 MAX9613 toc16 3.3 100 1k TOTAL HARMONIC DISTORTION PLUS NOISE -80 10s/div 100 FREQUENCY (Hz) TOTAL HARMONIC DISTORTION RECOVERY FROM SHUTDOWN 3.4 10 MAX9613 toc15 1 TOTAL HARMONIC DISTORTION PLUS NOISE (dB) 0.1 MAX9613 toc14 0 0.001 0.01 OUTPUT HIGH VOLTAGE (V) 0.30 INPUT CURRENT NOISE (fA/Hz) 80 MAX9613 toc11 100 100 INPUT VOLTAGE NOISE (nV/Hz) MAX9613 toc10 COMMON-MODE REJECTION RATIO (dB) INPUT CURRENT NOISE vs. FREQUENCY INPUT VOLTAGE NOISE vs. FREQUENCY 120 MAX9613 toc12 COMMON-MODE REJECTION RATIO vs. FREQUENCY TA = -40C 0 5 10 15 20 25 30 10s/div OUTPUT SINK CURRENT (mA) _______________________________________________________________________________________ 5 MAX9613/MAX9615 Typical Operating Characteristics (continued) (VCC = 3.3V, VIN+ = VIN- = 0V, VCM = VCC/2, RL = 10kI to VCC/2, values are at TA = +25NC, unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = 3.3V, VIN+ = VIN- = 0V, VCM = VCC/2, RL = 10kI to VCC/2, values are at TA = +25NC, unless otherwise noted.) STABILITY vs. CAPACITIVE AND RESISTIVE LOAD IN PARALLEL OPEN-LOOP GAIN vs. FREQUENCY 80 60 40 20 MAX9613 toc20 12 RESISTIVE LOAD (kI) 100 OPEN-LOOP GAIN (dB) 14 MAX9613 toc19 120 10 8 6 4 UNSTABLE 2 STABLE 0 0.001 0.01 0 0.1 1 10 100 0 100 200 300 400 500 600 700 800 900 1000 1000 10,000 FREQUENCY (kHz) CAPACITIVE LOAD (pF) STABILITY vs. CAPACITANCE WITH SERIES ISOLATION RESISTOR 100mV STEP RESPONSE CLOAD = 200pF MAX9613 toc22 MAX9613 toc21 80 70 ISOLATION RESISTOR (I) MAX9613/MAX9615 Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps 60 STABLE 50 VOUT 50mV/div GND 40 30 UNSTABLE 20 VIN 50mV/div 10 GND 0 0 200 400 600 800 1000 1200 1s/div CAPACITIVE LOAD (pF) 2V STEP RESPONSE CLOAD = 200pF RECOVERY FROM SATURATION OUTPUT SATURATED TO GND MAX9613 toc23 MAX9613 toc24 AV = 10V/V VOUT 1V/div VOUT 500mV/div GND GND VIN 1V/div VIN 50mV/div GND GND 4s/div 10s/div 6 _______________________________________________________________________________________ Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps RECOVERY FROM SATURATION OUTPUT SATURATED TO VCC OUTPUT IMPEDANCE vs. FREQUENCY MAX9613 toc25 AV = 10V/V 20 RESISTANCE (I) VOUT 1V/div MAX9613 toc26 25 GND VIN 1V/div 15 10 5 GND 0 0 10s/div 0.1 1 10 100 1000 10,000 FREQUENCY (kHz) Pin Configuration TOP VIEW NOT TO SCALE + + IN+ 1 OUTA 1 6 VCC MAX9613 GND 2 MAX9615 8 VCC INA- 2 7 OUTB INA+ 3 6 INB- GND 4 5 INB+ 5 SHDN IN- 3 4 OUT 6 SC70 8 SC70 Pin Description PIN MAX9613 MAX9615 NAME FUNCTION 1 -- IN+ -- 3 INA+ Positive Input A -- 5 INB+ Positive Input B Ground 2 4 GND 3 -- IN- -- 2 INA- Positive Input Negative Input Negative Input A -- 6 INB- Negative Input B 4 -- OUT Output -- 1 OUTA Output A -- 7 OUTB Output B 5 -- Active-Low Shutdown 6 8 SHDN VCC Positive Power Supply. Bypass with a 0.1FF capacitor to ground. _______________________________________________________________________________________ 7 MAX9613/MAX9615 Typical Operating Characteristics (continued) (VCC = 3.3V, VIN+ = VIN- = 0V, VCM = VCC/2, RL = 10kI to VCC/2, values are at TA = +25NC, unless otherwise noted.) Detailed Description The MAX9613/MAX9615 are low-power op amps ideal for signal processing applications due to their high precision and CMOS inputs. The MAX9613 also features a low-power shutdown mode that greatly reduces quiescent current while the device is not operational. The MAX9613/MAX9615 self-calibrate on power-up to eliminate effects of temperature and power-supply variation. Crossover Distortion These op amps feature an integrated charge pump that creates an internal voltage rail 1V above VCC that is used to power the input differential pair of pMOS transistors. This unique architecture eliminates crossover distortion common in traditional complementary pair type of input architecture. In these op amps, an inherent input offset voltage difference between the nMOS pair and pMOS pair of transistors causes signal degradation as shown in Figure 1. By using a single pMOS pair of transistors, this source of input distortion is eliminated, making these parts extremely useful in noninverting configurations such as Sallen-Key filters. The charge pump requires no external components and is entirely transparent to the user. See Figure 2. RF Immunity The MAX9613/MAX9615 feature robust internal EMI filters that reduce the devices' susceptibility to high-frequency RF signals such as from wireless and mobile devices. This, combined with excellent DC and AC specifications, makes these devices ideal for a wide variety of portable audio and sensitive signal-conditioning applications. INTERNAL CHARGE PUMP MAX9613/MAX9615 INPUT STRUCTURE STANDARD INPUT STRUCTURE Figure 1. Rail-to-Rail Input Stage Architectures AMPLIFIER OUTPUT MAX9613/MAX9615 Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps CROSSOVER DISTORTION Figure 2. Crossover Distortion When Using Standard Rail-to-Rail Input Stage Architecture. The Input Stage Design Eliminates This Drawback. 8 _______________________________________________________________________________________ Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps Power-Up Autotrim The MAX9613/MAX9615 feature an automatic autotrim that self-calibrates the VOS of these devices to less than 100FV of input offset voltage (Figure 3). The autotrim sequence takes approximately 3ms to complete, and is triggered by an internal power-on reset (POR) threshold of 0.5V. During this time, the inputs and outputs are put into high impedance and left unconnected. This selfcalibration feature allows the device to eliminate input offset voltage effects due to power supply and operating temperature variation simply by cycling its power. If the power supply glitches below the 0.5V threshold, the POR circuitry reactivates during next power-up. Shutdown Operation The MAX9613 features an active-low shutdown mode that puts both inputs and outputs into a high-impedance state. In this mode, the quiescent current is less than 1FA. Putting the output in high impedance allows multiple signal outputs to be multiplexed onto a single output line without the additional external buffers. The device does not self-calibrate when exiting shutdown mode, and retains its power-up trim settings. The device also instantly recovers from shutdown. The shutdown logic levels of the device are independent of supply, allowing the shutdown to be operated by either a 1.8V or 3.3V microcontroller. TIME FOR POWER SUPPLY TO SETTLE 5V Rail-to-Rail Input/Output The input voltage range of the MAX9613/MAX9615 extends 100mV above VCC and below ground. The wide input common-mode voltage range allows the op amp to be used as a buffer and as a differential amplifier in a wide variety of signal processing applications. Output voltage low is designed to be especially close to ground--it is only 11mV above ground, allowing maximum dynamic range in single-supply applications. High output current and capacitance drive capability of the part help it to be useful in ADC driver and line driver applications. Interfacing with the MAX11613 The MAX9615 dual amplifier's low power and tiny size is ideal for driving multichannel analog-to-digital converters (ADCs) such as the MAX11613. See the Typical Application Circuit. The MAX11613 is a low-power, 12-bit I2C ADC that measures either four single-ended or two differential channels in an 8-pin FMAX(R) package. Operating from a single 3V or 3.3V supply, the MAX11613 draws a low 380FA supply current when sampling at 10ksps. The MAX11613 family also offers pincompatible 5V ADCs (MAX11612) and 8-bit (MAX11601) and 10-bit (MAX11607) options. Input Bias Current The MAX9613/MAX9615 feature a high-impedance CMOS input stage and a specialized ESD structure that allows low input bias current operation at low input common-mode voltages. Low input bias current is useful when interfacing with high-ohmic sensors. It is also beneficial for designing transimpedance amplifiers for photodiode sensors. This makes these MAX9613/ MAX9615 devices ideal for ground referenced medical and industrial sensor applications. Active Filters VCC 0.5V 0V 2V VOUT 0V AUTOTRIM SEQUENCE CALIBRATED AMPLIFIER ACTIVE The MAX9613/MAX9615 are ideal for a wide variety of active filter circuits that make use of their rail-to-rail input/ output stages and high-impedance CMOS inputs. The Typical Application Circuit shows an example Sallen-Key active filter circuit with a corner frequency of 10kHz. At low frequencies, the amplifier behaves like a simple lowdistortion noninverting buffer, while its high bandwidth gives excellent stopband attenuation above its corner frequency. See the Typical Application Circuit. Chip Information 0.4 ms 10ms Figure 3. Autotrim Timing Diagram PROCESS: BiCMOS MAX is a registerred trademark of Maxim Integrated Products, Inc. _______________________________________________________________________________________ 9 MAX9613/MAX9615 Applications Information Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE No. LAND PATTERN NO. 6 SC70 X6SN-1 21-0077 90-0189 8 SC70 X8SN-1 21-0460 90-0348 SC70, 6L.EPS MAX9613/MAX9615 Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps 10 Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. ______________________________________________________________________________________ 11 MAX9613/MAX9615 Package Information (continued) Low-Power, High-Efficiency, Single/Dual, Rail-to-Rail I/O Op Amps MAX9613/MAX9615 Revision History REVISION NUMBER REVISION DATE 0 8/10 DESCRIPTION Initial release PAGES CHANGED -- 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. 12 (c) Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.