MAX4209
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MAX4209

Ultra-Low Offset/Drift, Precision Instrumentation Amplifiers with REF Buffer

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Instrumentation Amplifiers Use Autozero to Achieve 20µV (max) Offset

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $1.93
Features
  • 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
Additional Details
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The MAX4208/MAX4209 ultra-low offset and drift instrumentation amplifiers feature exceptional precision specifications, low power consumption, rail-to-rail output, excellent gain-bandwidth product, and buffered REFIN/MODE input in a very small µMAX® package. These devices use a spread-spectrum, autozeroing technique that constantly measures and corrects the input offset, eliminating drift over time and temperature and the effect of 1/f noise. This technique achieves less than 20µV offset voltage, allows ground-sensing capability, provides ultra-low CMOS input bias current and increased common-mode rejection performance.

The MAX4208/MAX4209 provide high-impedance inputs optimized for small-signal differential voltages (±100mV). All devices provide a gain-bandwidth product of 750kHz.

The MAX4208 provides an adjustable gain with two external resistors or unity gain with FB connected to OUT. The MAX4209 is available with a fixed gain of 100V/V with ±0.03% (typ) accuracy. Both devices include a reference input (REF) to level-shift the output, allowing for bipolar signals in single-supply applications. In both devices, REFIN/MODE is an input to a precision unity-gain buffer, which sets the REF voltage to level-shift the output. The internal REF buffer allows the reference to be set by a simple resistive divider or an ADC reference without any loading error.

The MAX4208/MAX4209 operate with a 2.85V to 5.5V single-supply voltage and consume only 750µA of quiescent current (when the internal buffer is off) and only 1.4µA in shutdown mode. These amplifiers also operate with ±2.5V dual supplies with REF connected to ground and REFIN/MODE to VSS. The MAX4208/MAX4209 are available in space-saving 8-pin µMAX packages and are specified over the automotive operating temperature range (-40°C to +125°C).

Applications

  • Battery-Powered Medical Equipment
  • Differential Voltage Amplification
  • Industrial Process Control
  • Notebook Computers
  • Precision Low-Side Current Sense
  • Strain-Gauge Amplifiers
Part Models 2
1ku List Price Starting From $1.93

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX4209HAUA+
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Product Lifecycle

PCN

Sep 19, 2018

- 1753N

ASSEMBLY

MAX4209HAUA+

PRODUCTION

MAX4209HAUA+T

PRODUCTION

Jan 9, 2015

- 1481

WAFER FAB

MAX4209HAUA+

PRODUCTION

MAX4209HAUA+T

PRODUCTION

Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

Sep 19, 2018

- 1753N

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ASSEMBLY

MAX4209HAUA+

PRODUCTION

MAX4209HAUA+T

PRODUCTION

Jan 9, 2015

- 1481

arrow down

WAFER FAB

MAX4209HAUA+

PRODUCTION

MAX4209HAUA+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

MAX4208EVKIT

Evaluation Kit for the MAX4208

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MAX4208EVKIT

Evaluation Kit for the MAX4208

Evaluation Kit for the MAX4208

Features and Benefits

  • Single- or Dual-Supply Operation
    • 2.85V to 5.5V Single-Supply Operation
    • ±1.425V to ±2.75V Dual-Supply Operation
  • Adjustable Voltage Gain Configured to 148V/V
  • Rail-to-Rail Output
  • Configurable Reference Voltage: Externally or Internally Buffered
  • Optional Current-Sense Mode
  • Fully Assembled and Tested

Product Detail

The MAX4208 evaluation kit (EV kit) simplifies evaluation of the MAX4208 ultra-low offset/drift, adjustable gain, precision instrumentation amplifier in a µMAX® package. The MAX4208 features high-impedance differential inputs optimized for small voltages (±100mV max) and provides rail-to-rail output. The MAX4208 EV kit is configured for a gain of 148V/V. The EV kit operates from a single-supply voltage between 2.85V and 5.5V, or dual supplies providing ±1.425V to ±2.75V.

The MAX4208 EV kit can also be used to evaluate the MAX4209 fixed-gain amplifiers. The MAX4208 IC temperature range is -40°C to +125°C.

The MAX4209 EV kit, available separately, evaluates the 100V/V fixed-gain MAX4209 amplifier without external gain-setting resistors.

Note: To evaluate a MAX4209 IC featuring internal gain-setting resistors, order a MAX4209EVKIT+ or request a free sample of the MAX4209 IC along with the MAX4208EVKIT+. See the Part Selection Table in the full data sheet for IC ordering information.

Applications

  • Automotive Transducer Applications
  • Battery-Powered Medical Equipment
  • Differential Voltage Amplification
  • Industrial Process Control
  • Notebook Computers
  • Precision Low-Side Current Sense
  • Strain-Gauge Amplifiers

MAX4209EVKIT

Evaluation Kit for the MAX4209

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MAX4209EVKIT

Evaluation Kit for the MAX4209

Evaluation Kit for the MAX4209

Features and Benefits

    Single- or Dual-Supply Operation
    • 2.85V to 5.5V Single-Supply Operation
    • ±1.425V to ±2.75V Dual-Supply Operation
  • 100V/V Fixed Voltage Gain
  • Rail-to-Rail Output
  • Configurable Reference Voltage: Externally or Internally Buffered
  • Optional Current-Sense Mode
  • Fully Assembled and Tested

Product Detail

The MAX4209 evaluation kit (EV kit) simplifies evaluation of the MAX4208 ultra-low offset/drift, fixed gain, precision instrumentation amplifier in a µMAX® package. The MAX4209 features high-impedance differential inputs optimized for small voltages (±100mV max) and provides rail-to-rail output. The MAX4209 EV kit circuit uses the 100V/V fixed-voltage-gain version of the MAX4209. The EV kit operates from a single-supply voltage between 2.85V and 5.5V, or dual supplies providing ±1.425V to ±2.75V.

The MAX4209 EV kit can also evaluate the 10V/V and 1000V/V fixed-gain versions of the MAX4209 amplifiers, as well as the MAX4208 adjustable-gain amplifier. The MAX4209 IC temperature range is -40°C to +125°C.

The MAX4208 EV kit, available separately, evaluates the MAX4208 adjustable-gain amplifier with external gain-setting resistors.

Note: To evaluate a MAX4208 IC featuring externally adjustable gain, order a MAX4208EVKIT+ or request a free sample of the MAX4208AUA+ IC along with the MAX4209EVKIT+. For the alternate-gain versions of the MAX4209 IC, see the Part Selection Table in the full data sheet for IC ordering information.

Applications

  • Automotive Transducer Applications
  • Battery-Powered Medical Equipment
  • Differential Voltage Amplification
  • Industrial Process Control
  • Notebook Computers
  • Precision Low-Side Current Sense
  • Strain-Gauge Amplifiers

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