19-5302; Rev 0; 8/10 Low-Power Single/Dual, Rail-to-Rail Op Amps The MAX9614/MAX9616 are low-power precision op amps that feature precision MOS inputs. 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. Features S VCC = 2.5V to 5.5V (-40°C to +125°C) S Low 100µV (max) VOS S 1µA Supply Current in Shutdown, 175µA Operating S Small SC70 Package S 2.8MHz Bandwidth S Excellent RF Immunity The MAX9614/MAX9616 are capable of operating from a 2.5V to 5.5V supply voltage over the -40NC to +125NC automotive temperature range. Both singles and duals are available in tiny SC70 packages. The MAX9614 features an active-low shutdown pin. Applications Ordering Information TEMP RANGE PINPACKAGE TOP MARK MAX9614AXT+T -40NC to +125NC 6 SC70 +ADL MAX9616AXA+T -40NC to +125NC 8 SC70 +AAE PART Notebooks, Portable Media Players Industrial and Medical Sensors General Purpose Signal Processing +Denotes lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Typical Application Circuit 66.5kI 66.5kI INPUT 4.7nF 121kI 220pF VCC 1.21kI 20kI MAX11613 VCC/2 100nF ADC 20kI MAX9614 USING THE MAX9614 OUTPUT AMPLIFIER AS AN ANTI-ALIASING FILTER (CORNER FREQUENCY = 1.3kHz) TO MAXIMIZE NYQUIST BANDWIDTH. ________________________________________________________________ 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. MAX9614/MAX9616 General Description MAX9614/MAX9616 Low-Power Single/Dual, Rail-to-Rail 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, OUT, OUTA, OUTB.................. 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 Junction Temperature......................................................+150NC Lead Temperature (soldering, 10s).................................+300NC Soldering Temperature (reflow).......................................+240NC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer 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 = GND, 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 - 1.4 V DC CHARACTERISTICS Input Voltage Range VIN+, VIN- Guaranteed by CMRR test -0.1 17 TA = +25NC Input Offset Voltage VOS TA = -40NC to +125NC, after power-up autocalibration 165 Input Bias Current (Note 3) Input Offset Current (Note 3) VOS - TC IB IOS TA = -40NC to +25°C TA = +70NC 1 7.5 1 1.55 45 TA = +85NC 135 TA = +125NC 1.55 TA = -40NC to +25°C TA = +70NC 0.5 TA = +85NC 25 7 CMRR Open-Loop Gain AOL Output Short-Circuit Current (Note 4) ISC Output Voltage Low VOL FV/NC pA nA pA 4000 TA = +125NC Common-Mode Rejection Ratio FV 750 TA = -40NC to +125NC Input Offset Voltage Drift 100 VCM = -0.1V to VCC - 1.4V, TA = +25NC 80 VCM = -0.1V to VCC - 1.4V, TA = -40NC to +125NC 78 95 dB +0.4V P VOUT P VCC - 0.4V, RL = 10kI 99 115 +0.4V P VOUT P VCC - 0.4V, RL = 600I 93 110 To VCC 275 To GND 75 dB mA RL = 10kI 1 11 RL = 600I 11 100 RL = 32I 170 2 _______________________________________________________________________________________ mV Low-Power Single/Dual, Rail-to-Rail Op Amps (VCC = VSHDN = 3.3V, VIN+ = VIN- = VCM = GND, 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 TYP RL = 10kI VCC 11 VCC 2 RL = 600I VCC 100 VCC 30 RL = 32I VCC 560 f = 10kHz 28 MAX UNITS mV 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 Shutdown Input Low Shutdown Input High Output Impedance in Shutdown Turn-On Time from SHDN Power-Up Time Guaranteed by PSRR 2.5 TA = +25NC 85 TA = -40NC to +125NC 83 5.5 106 170 TA = +25NC, per amplifier dB 255 350 TA = -40NC to +125NC, per amplifier V FA ISHDN VIL MAX9614 only 1 FA MAX9614 only 0.5 V VIH MAX9614 only ROUT_SHDN MAX9614 only MAX9614 only tON tUP 1.4 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 exceeed package thermal dissipation in the Absolute Maximum Ratings section. _______________________________________________________________________________________ 3 MAX9614/MAX9616 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 TA = +85°C 100 50 TA = +25°C 0 30 40 30 20 10 -100 0.5 1.0 1.5 2.0 25 20 15 5 0 0 2.5 0 2.0 1.5 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 (µV) SUPPLY CURRENT vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. TEMPERATURE INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE TA = +85°C 150 TA = -40°C 100 200 150 100 MAX9614 toc06 250 1000 TA = +125°C 100 TA = +85°C 10 TA = +25°C 1 50 50 0.1 0 0 0.01 TA = -40°C 3.5 4.0 4.5 5.0 5.5 -25 0 25 50 75 100 125 1.0 1.5 2.0 2.5 COMMON-MODE VOLTAGE (V) INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE INPUT BIAS CURRENT vs. TEMPERATURE POWER-UP TRANSIENT 0.2 0 -0.2 -0.4 -0.6 VCM = 0V 10 VOUT 200mV/div 1 GND 0.1 VCC 2V/div GND -0.8 -1.0 1.0 1.5 2.0 2.5 3.0 COMMON-MODE VOLTAGE (V) 3.5 4.0 3.0 MMAX9614-16 toc09 100 INPUT BIAS CURRENT (pA) 0.4 0.5 0.5 TEMPERATURE (°C) 0.6 0 0 SUPPLY VOLTAGE (V) TA = +25°C 0.8 -50 6.0 TA = 0°C MAX9614 toc08 1.0 3.0 MAX9614 toc07 2.5 60 10,000 INPUT BIAS CURRENT (pA) TA = +25°C MAX9614 toc05 250 RLOAD = NO LOAD SUPPLY CURRENT (µA) TA = +125°C 200 300 MAX9614 toc04 300 SUPPLY CURRENT (µA) 35 10 TA = -40°C -50 -0.5 MAX9614 toc03 50 OCCURANCE (%) 150 OFFSET VOLTAGE HISTOGRAM 40 MAX9614 toc02 TA = +125°C OFFSET VOLTAGE (µV) OFFSET VOLTAGE (µV) 200 OFFSET VOLTAGE vs. SUPPLY VOLTAGE 60 MAX9614 toc01 250 INPUT BIAS CURRENT (pA) MAX9614/MAX9616 Low-Power Single/Dual, Rail-to-Rail Op Amps 0.01 -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) 4 _______________________________________________________________________________________ 4ms/div Low-Power Single/Dual, Rail-to-Rail Op Amps 60 50 40 30 20 10 0 0.01 0.1 1 10 100 60 40 20 0.1 1 10 100 FREQUENCY (kHz) INPUT CURRENT NOISE vs. FREQUENCY RECOVERY FROM SHUTDOWN 50 40 30 20 0.15 GND VCC 2V/div GND 100k VIN = 2VP-P AV = 1V/V -70 -80 -90 -100 -110 -120 0 100 1k 10k 100k 10 10µs/div 100 -60 -80 3.3 TA = -40°C 3.2 3.1 TA = +25°C 3.0 TA = +85°C 2.9 2.8 2.7 TA = +125°C 2.6 -100 -120 100 1k FREQUENCY (Hz) 10k 100k 0.18 0.16 OUTPUT LOW VOLTAGE (V) -40 3.4 MAX9614-16 toc17 VIN = 2VP-P AV = 1V/V OUTPUT HIGH VOLTAGE (V) MAX9614-16 toc16 0 10 100k 10k OUTPUT LOW VOLTAGE vs. OUTPUT SINK CURRENT OUTPUT HIGH VOLTAGE vs. OUTPUT SOURCE CURRENT TOTAL HARMONIC DISTORTION PLUS NOISE -20 1k FREQUENCY (Hz) FREQUENCY (Hz) 0.12 0.10 0.06 0.02 0 10 15 20 25 OUTPUT SOURCE CURRENT (mA) 30 TA = +25°C 0.04 2.4 5 TA = +125°C 0.08 2.5 0 TA = +85°C 0.14 MAX9614-16 toc18 10 TOTAL HARMONIC DISTORTION PLUS NOISE (dB) 10k TOTAL HARMONIC DISTORTION -60 TOTAL HARMONIC DISTORTION (dB) VOUT 200mV/div 1k FREQUENCY (Hz) MAX9614-16 toc13 0.20 0.05 60 100 MAX9614-16 toc14 0.10 70 0 1000 10,000 FREQUENCY (kHz) 0.25 80 10 0 0.001 0.01 1000 10,000 0.30 INPUT CURRENT NOISE (fA/√Hz) 80 90 MAX9614 toc15 70 100 100 INPUT VOLTAGE NOISE (nV/√ Hz) 80 MAX9614-16 toc11 90 INPUT VOLTAGE NOISE vs. FREQUENCY 120 POWER-SUPPLY REJECTION RATIO (dB) MAX9614 toc10 COMMON-MODE REJECTION RATIO (dB) 100 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY MAX9614 toc12 COMMON-MODE REJECTION RATIO vs. FREQUENCY TA = -40°C 0 5 10 15 20 25 30 OUTPUT SINK CURRENT (mA) _______________________________________________________________________________________ 5 MAX9614/MAX9616 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 12 RESISTIVE LOAD (kI) OPEN-LOOP GAIN (dB) 100 VOUT 1µV/div 14 MAX9614-16 toc20 120 MAX9614 toc19 80 60 40 20 MAX9614 toc21 0.1Hz TO 10Hz NOISE 10 8 6 4 UNSTABLE 2 0 0.001 0.01 STABLE 0.1 1 10 100 1000 10,000 0 0 100 200 300 400 500 600 700 800 900 1000 FREQUENCY (kHz) MAX9614-16 toc23 MAX9614-16 toc22 80 70 60 STABLE 50 CAPACITIVE LOAD (pF) 100mV STEP RESPONSE CLOAD = 200pF STABILITY vs. CAPACITIVE WITH SERIES ISOLATION RESISTOR RESISTIVE LOAD (I) MAX9614/MAX9616 Low-Power Single/Dual, Rail-to-Rail Op Amps VOUT 50mV/div GND 40 30 VIN 50mV/div UNSTABLE 20 10 GND 0 0 200 400 600 800 1000 1200 1µs/div CAPACITIVE LOAD (pF) 2V STEP RESPONSE CLOAD = 200pF VOUT 1V/div RECOVERY FROM SATURATION OUTPUT SATURATED TO GND MAX9614-16 toc25 MAX9614-16 toc24 VOUT 500mV/div AV = 10V/V GND GND VIN 1V/div VIN 50mV/div GND GND 4µs/div 10µs/div 6 _______________________________________________________________________________________ Low-Power Single/Dual, Rail-to-Rail Op Amps RECOVERY FROM SATURATION OUTPUT SATURATED TO VCC OUTPUT IMPEDANCE vs. FREQUENCY MAX9614-16 toc26 MAX9614-16 toc27 AV = 10V/V 20 RESISTANCE (I) VOUT 1V/div GND VIN 1V/div NO PHASE REVERSAL MAX9614 toc28 25 VIN 1V/div 15 10 VOUT 1V/div 5 GND 0 0 10µs/div 0.1 1 10 100 200µs/div 1000 10,000 FREQUENCY (kHz) Pin Configuration TOP VIEW NOT TO SCALE + IN+ 1 + MAX9614 GND 2 6 VCC OUTA 1 MAX9616 8 VCC INA- 2 7 OUTB INA+ 3 6 INB- GND 4 5 INB+ 5 SHDN IN- 3 4 OUT 8 SC70 6 SC70 Pin Description PIN MAX9614 MAX9616 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 MAX9614/MAX9616 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.) MAX9614/MAX9616 Low-Power Single/Dual, Rail-to-Rail Op Amps Detailed Description The MAX9614/MAX9616 are low-power op amps ideal for signal processing applications due to the devices’ high precision and CMOS inputs. The MAX9614 also features a low-power shutdown mode that greatly reduces quiescent current while the device is not operational. The MAX9614/MAX9616 self-calibrate on power-up to eliminate effects of temperature and power-supply variation. RF Immunity The MAX9614/MAX9616 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. Applications Information Power-Up Autotrim The MAX9614/MAX9616 feature an automatic power-up autotrim that self-calibrates the VOS of these devices to less than 100FV of input offset voltage. The autotrim sequence takes approximately 10ms to complete, and is triggered by an internal power-on reset (POR) circuitry. During this time, the inputs and outputs are put into high impedance and left unconnected. This self-calibration feature allows the device to eliminate input offset voltage effects due to power supply and operating temperature variation simply by cycling its power. Take care to ensure that the power supply settles within 0.4ms of power-up after it crosses a POR threshold of 0.5V to ensure that a stable power supply is present when it steps through its autotrim sequence. If the power supply glitches below the 0.5V threshold, the POR circuitry reactivates during next power-up. Shutdown Operation The MAX9614 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 operate by either a 1.8V or 3.3V microcontroller. Interfacing with the MAX11613 The MAX9616 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® 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. The MAX9614/MAX9616’s 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. TIME FOR POWER SUPPLY TO SETTLE 5V VCC 0.5V 0V 2V AMPLIFIER AUTOTRIM VOUT* 0V 0.4 ms 10ms Figure 1. Autotrim Timing Diagram µMAX is a registered trademark of Maxim Integrated Products, Inc. 8 _______________________________________________________________________________________ CALIBRATED AMPLIFIER ACTIVE Low-Power Single/Dual, Rail-to-Rail Op Amps Active Filters The MAX9614/MAX9616 are ideal for a wide variety of active filter circuits that make use of their rail-to-rail output stages and high impedance CMOS inputs. The Typical Application Circuit shows an example multiple feedback active filter circuit with a corner frequency of 1.3kHz. At low frequencies, the amplifier behaves like a simple low-distortion inverting amplifier of gain = -1, while its high bandwidth gives excellent stopband attenuation above its corner frequency. See the Typical Application Circuit. Chip Information PROCESS: BiCMOS _______________________________________________________________________________________ 9 MAX9614/MAX9616 Input Bias Current The MAX9614/MAX9616 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 the MAX9614/ MAX9616 ideal for ground referenced medical and industrial sensor applications. 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 — SC70, 6L.EPS MAX9614/MAX9616 Low-Power Single/Dual, Rail-to-Rail Op Amps 10 ������������������������������������������������������������������������������������� Low-Power Single/Dual, Rail-to-Rail 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 MAX9614/MAX9616 Package Information (continued) MAX9614/MAX9616 Low-Power Single/Dual, Rail-to-Rail Op Amps 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 © 2010 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
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