AD8476
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AD8476

Low Power, Unity Gain Fully Differential Amplifier & ADC Driver

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Part Details
Part Models 12
1ku List Price Starting From $2.34
Features
  • Very low power
    - 330 μA supply current
  • Fully differential or single-ended inputs/outputs
  • Differential output designed to drive precision ADCs
    - Drives switched capacitor and Σ-Δ ADCs
    - Rail-to-rail output
  • VOCM pin adjusts output common mode
  • Robust overvoltage up to 18 V beyond supplies
  • High performance
    - Suitable for driving 16-bit converter up to 250 kSPS
    - 39 nV/√Hz output noise
    - 1 ppm/°C gain drift
    - 200 μV maximum output offset
    - 10 V/μs slew rate
    - 5 MHz bandwidth
  • Single supply: 3 V to 18 V
  • Dual supplies: ±1.5 V to ±9 V
Additional Details
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The AD8476 is a very low power, fully differential precision amplifier with integrated gain resistors for unity gain. It is an ideal choice for driving low power, high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. It provides a precision gain of 1, common-mode level shifting, low temperature drift, and rail-to-rail outputs for maximum dynamic range.

The AD8476 also provides overvoltage protection from large industrial input voltages up to ±23 V while operating on a dual 5 V supply. Power dissipation on a single 5 V supply is only 1.5 mW.

The AD8476 works well with SAR, Σ-Δ, and pipeline converters. The high current output stage of the part allows it to drive the switched capacitor front-end circuits of many ADCs with minimal error.

Unlike many differential drivers on the market, the AD8476 is a high precision amplifier. With 200 μV maximum output offset, 39 nV/√Hz noise, and −102 dB THD + N at 10 kHz, the AD8476 pairs well with low power, high accuracy converters.

Considering its low power consumption and high precision, the slew-enhanced AD8476 has excellent speed, settling to 16-bit precision for 250 kSPS acquisition times.

The AD8476 is available in a space-saving 8-lead MSOP package. It is fully specified over the −40°C to +125°C temperature range.

Applications

  • ADC driver
  • Differential instrumentation amplifier building block
  • Single-ended-to-differential converter
  • Battery powered instruments
Part Models 12
1ku List Price Starting From $2.34

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD8476ACPZ-R7
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AD8476ACPZ-RL
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AD8476ACPZ-WP
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AD8476ARMZ
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AD8476ARMZ-R7
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AD8476ARMZ-RL
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AD8476BCPZ-R7
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AD8476BCPZ-RL
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AD8476BCPZ-WP
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AD8476BRMZ
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AD8476BRMZ-R7
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AD8476BRMZ-RL
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Product Lifecycle

PCN

Apr 28, 2014

- 13_0224

Assembly Transfer of Select 2x3 and 3x3mm LFCSP Products to STATS ChipPAC China.

AD8476ACPZ-R7

PRODUCTION

AD8476ACPZ-RL

PRODUCTION

AD8476BCPZ-R7

PRODUCTION

AD8476BCPZ-RL

PRODUCTION

Filter by Model

reset

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Part Models

Product Lifecycle

PCN

Apr 28, 2014

- 13_0224

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Assembly Transfer of Select 2x3 and 3x3mm LFCSP Products to STATS ChipPAC China.

AD8476ACPZ-R7

PRODUCTION

AD8476ACPZ-RL

PRODUCTION

AD8476BCPZ-R7

PRODUCTION

AD8476BCPZ-RL

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

EVAL-AD8476

AD8476 Evaluation Board

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EVAL-AD8476

AD8476 Evaluation Board

AD8476 Evaluation Board

Product Detail

The AD8476-EVALZ makes it easy for designers to obtain quick performance results on the 8 lead MSOP for their particular application circuit using the AD8476 low power, fully-differential G = 1 amplifier.


The board layout is flexible enough to allow for different circuit configurations, including options for single-ended or differential inputs, and space for output loading and filtering. Most resistors and capacitors use 0603 packages.


Refer to user guide UG-422.

Tools & Simulations

Tools & Simulations 3

Reference Designs

Reference Designs 1

K-Type Thermocouple Measurement System with Integrated Cold Junction Compensation

Thermocouple Temperature Measurement System with Amplifier - Based Cold Junction Compensation

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CN0271

Thermocouple Temperature Measurement System with Amplifier - Based Cold Junction Compensation

CN0271

Circuits from the lab

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Thermocouple Temperature Measurement System with Amplifier - Based Cold Junction Compensation

Features and Benefits

  • Typical temperature range of -200 C to +1200 C
  • K-type thermocouple measurement system
  • 16-bit ADC, Low temperature drift
  • Integrated cold junction compensation
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