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Specialized
Maxim provides amplifiers with specialized operation and multiple features suited for a wide range of applications, including differential output amplifiers, instrumentation/difference amplifiers, log amps and programmable gain amps.
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Technical Documentation

Technical Documents
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Featured Products
MAX9939 SPI-Programmable Gain Amplifier (PGA) with Input VOS Trim and Output Op Amp
The MAX9939 is a general-purpose, differential-input programmable-gain amplifier (PGA) that is i...
- SPI-Programmable Gains: 0.2V/V to 157V/V
- Extremely Low Gain Tempco
- Integrated Amplifier for R/C Programmable Active Filter
- Input Offset-Voltage Compensation
- Input Protection to ±16V
- 13µA Software Shutdown Mode
- -40°C to +125°C Operating Temperature Range
- 10-Pin µMAX Package
MAX4206 Precision Transimpedance Logarithmic Amplifier with Over 5 Decades of Dynamic Range
The MAX4206 logarithmic amplifier computes the log ratio of an input current relative to a refer...
- Single Supply Capability Reduces System Power Supply Requirements
- +2.7V to +11V Single-Supply Operation
- Also Supports ±2.7V to ±5.5V Dual-Supply Operation if Required
- Wide Dynamic Range Supports Most Photodiode Current Measurement Applications
- 5 Decades of Dynamic Range (10nA to 1mA)
- Monotonic Over a 1nA to 1mA Range
- Adjustable Output Scale Factor
- 0.25V/Decade Internally Trimmed Output Scale Factor
- Adjustable Output Offset Voltage
- Internal 10nA to 10µA Reference Current Source
- 0.5V Input Common-Mode Voltage
- Small Package and Few External Components Saves Space and Simplifies Design-In
- 16-Pin TQFN Package (4mm x 4mm x0.8mm)
MAX4208 Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
The MAX4208/MAX4209 ultra-low offset and drift instrumentation amplifiers feature exceptional pr...
- Spread-Spectrum, Auto-Zero Instrumentation Amplifiers Improve DC Characteristics to Maximize Sensor Performance
- Input Offset Voltage: ±20µV (max) at +25°C
- ±0.25% (max) Gain Error
- Low 0.2µV/°C Offset Voltage Drift
- 1pA CMOS Input Bias Current
- True Ground Sensing with Rail-to-Rail Output
- 750kHz Gain-Bandwidth Product
- Buffered REF Input for High Accuracy and Bipolar Operation
- Low Power Operation Supports Remote Sensing and Battery-Powered Applications
- 2.85V to 5.5V Single-Supply Operation (or ±1.425V to ±2.75V Dual Supplies)
- 750µA Supply Current
- 1.4µA Shutdown Mode
- Adjustable (MAX4208) and Fixed Gain of 100 (MAX4209) Provide Design Flexibility
MAX9626 Low-Noise, Low-Distortion, 1.35GHz Fully Differential Amplifiers
The MAX9626/MAX9627/MAX9628 are low-noise, low-distortion, and high-bandwidth differential ampli...
- Low-Voltage Noise Density 3.6nV/
- Low Harmonic Distortion
- HD2/HD3 of -102/-105dB at 10MHz
- HD2/HD3 of -86/-80dB at 125MHz
- Factory Set Gain Options of 1V/V, 2V/V, and 4V/V
- 1.35GHz Small-Signal Bandwidth
- Adjustable-Output Common-Mode Voltage
- Differential-to-Differential or Single-Ended-to-Differential Operation
- 25µA Shutdown Current
- Single-Supply Voltage +2.85V to +5.25V
- Small, 3mm x 3mm 12-Pin TQFN Package
MAX4196 Micropower, Single-Supply, Rail-to-Rail, Precision Instrumentation Amplifiers
The MAX4194 is a variable-gain precision instrumentation amplifier that combines Rail-to-Rail; s...
- Low Power Consumption Is Ideal for Remote-Sensing and Battery-Powered Applications
- +2.7V Single-Supply Operation
- Low Power Consumption
- 93µA Supply Current
- 8µA Shutdown Current (MAX4195/MAX4196/MAX4197)
- Precision Specifications Maximize Sensor Peformance
- High Common-Mode Rejection: 115dB (G = +10V/V)
- Input Common-Mode Range Extends 200mV Below GND
- Low 50µV Input Offset Voltage (G ≥ +100V/V)
- Low ±0.01% Gain Error (G = +1V/V)
- 250kHz -3dB Bandwidth (G = +1V/V, MAX4194)
- Rail-to-Rail Outputs
MAX9004 Low-Power, High-Speed, Single-Supply Op Amp Comparator Reference ICs
The MAX9000 family features the combination of a high-speed operational amplifier, a 185ns compa...
- Op Amp + Comparator + Reference in Space-Saving µMAX® Package
- +2.5V to +5.5V Single-Supply Voltage Range
- 340µA Supply Current (MAX9002/MAX9005)
- Unity-Gain Stable (GBW = 1.25MHz) and Decompensated (AV > 10V/V, GBW = 8MHz) Options
- Op-Amp/Comparator Outputs Swing Rail-to-Rail
- Ground-Sensing Inputs for Both Op Amp and Comparator
- Op Amp Stable with Capacitive Loads up to 250pF
- Internal ±2mV Comparator Hysteresis
- Fast 185ns Propagation-Delay Comparator
- No Phase Reversal for Overdriven Inputs (Both Op Amp and Comparator)
- Internal 1.230V Precision Reference (MAX9000/MAX9001/MAX9003/MAX9004)
- ±1% Initial Accuracy
- Low 8ppm/°C Temperature Drift
- Sink or Source up to 1mA
- Stable for Capacitive Loads up to 100nF
MAX9939 SPI-Programmable Gain Amplifier (PGA) with Input VOS Trim and Output Op Amp
The MAX9939 is a general-purpose, differential-input programmable-gain amplifier (PGA) that is i...
- SPI-Programmable Gains: 0.2V/V to 157V/V
- Extremely Low Gain Tempco
- Integrated Amplifier for R/C Programmable Active Filter
- Input Offset-Voltage Compensation
- Input Protection to ±16V
- 13µA Software Shutdown Mode
- -40°C to +125°C Operating Temperature Range
- 10-Pin µMAX Package
MAX4206 Precision Transimpedance Logarithmic Amplifier with Over 5 Decades of Dynamic Range
The MAX4206 logarithmic amplifier computes the log ratio of an input current relative to a refer...
- Single Supply Capability Reduces System Power Supply Requirements
- +2.7V to +11V Single-Supply Operation
- Also Supports ±2.7V to ±5.5V Dual-Supply Operation if Required
- Wide Dynamic Range Supports Most Photodiode Current Measurement Applications
- 5 Decades of Dynamic Range (10nA to 1mA)
- Monotonic Over a 1nA to 1mA Range
- Adjustable Output Scale Factor
- 0.25V/Decade Internally Trimmed Output Scale Factor
- Adjustable Output Offset Voltage
- Internal 10nA to 10µA Reference Current Source
- 0.5V Input Common-Mode Voltage
- Small Package and Few External Components Saves Space and Simplifies Design-In
- 16-Pin TQFN Package (4mm x 4mm x0.8mm)
MAX4208 Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer
The MAX4208/MAX4209 ultra-low offset and drift instrumentation amplifiers feature exceptional pr...
- Spread-Spectrum, Auto-Zero Instrumentation Amplifiers Improve DC Characteristics to Maximize Sensor Performance
- Input Offset Voltage: ±20µV (max) at +25°C
- ±0.25% (max) Gain Error
- Low 0.2µV/°C Offset Voltage Drift
- 1pA CMOS Input Bias Current
- True Ground Sensing with Rail-to-Rail Output
- 750kHz Gain-Bandwidth Product
- Buffered REF Input for High Accuracy and Bipolar Operation
- Low Power Operation Supports Remote Sensing and Battery-Powered Applications
- 2.85V to 5.5V Single-Supply Operation (or ±1.425V to ±2.75V Dual Supplies)
- 750µA Supply Current
- 1.4µA Shutdown Mode
- Adjustable (MAX4208) and Fixed Gain of 100 (MAX4209) Provide Design Flexibility
MAX9626 Low-Noise, Low-Distortion, 1.35GHz Fully Differential Amplifiers
The MAX9626/MAX9627/MAX9628 are low-noise, low-distortion, and high-bandwidth differential ampli...
- Low-Voltage Noise Density 3.6nV/
- Low Harmonic Distortion
- HD2/HD3 of -102/-105dB at 10MHz
- HD2/HD3 of -86/-80dB at 125MHz
- Factory Set Gain Options of 1V/V, 2V/V, and 4V/V
- 1.35GHz Small-Signal Bandwidth
- Adjustable-Output Common-Mode Voltage
- Differential-to-Differential or Single-Ended-to-Differential Operation
- 25µA Shutdown Current
- Single-Supply Voltage +2.85V to +5.25V
- Small, 3mm x 3mm 12-Pin TQFN Package
MAX4196 Micropower, Single-Supply, Rail-to-Rail, Precision Instrumentation Amplifiers
The MAX4194 is a variable-gain precision instrumentation amplifier that combines Rail-to-Rail; s...
- Low Power Consumption Is Ideal for Remote-Sensing and Battery-Powered Applications
- +2.7V Single-Supply Operation
- Low Power Consumption
- 93µA Supply Current
- 8µA Shutdown Current (MAX4195/MAX4196/MAX4197)
- Precision Specifications Maximize Sensor Peformance
- High Common-Mode Rejection: 115dB (G = +10V/V)
- Input Common-Mode Range Extends 200mV Below GND
- Low 50µV Input Offset Voltage (G ≥ +100V/V)
- Low ±0.01% Gain Error (G = +1V/V)
- 250kHz -3dB Bandwidth (G = +1V/V, MAX4194)
- Rail-to-Rail Outputs
MAX9004 Low-Power, High-Speed, Single-Supply Op Amp Comparator Reference ICs
The MAX9000 family features the combination of a high-speed operational amplifier, a 185ns compa...
- Op Amp + Comparator + Reference in Space-Saving µMAX® Package
- +2.5V to +5.5V Single-Supply Voltage Range
- 340µA Supply Current (MAX9002/MAX9005)
- Unity-Gain Stable (GBW = 1.25MHz) and Decompensated (AV > 10V/V, GBW = 8MHz) Options
- Op-Amp/Comparator Outputs Swing Rail-to-Rail
- Ground-Sensing Inputs for Both Op Amp and Comparator
- Op Amp Stable with Capacitive Loads up to 250pF
- Internal ±2mV Comparator Hysteresis
- Fast 185ns Propagation-Delay Comparator
- No Phase Reversal for Overdriven Inputs (Both Op Amp and Comparator)
- Internal 1.230V Precision Reference (MAX9000/MAX9001/MAX9003/MAX9004)
- ±1% Initial Accuracy
- Low 8ppm/°C Temperature Drift
- Sink or Source up to 1mA
- Stable for Capacitive Loads up to 100nF