AD8475
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AD8475

Precision, Selectable Gain, Fully Differential Funnel Amplifier

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Info: : PRODUCTION tooltip
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Part Details
Part Models 9
1ku List Price Starting From $2.34
Features
  • Precision attenuation: G = 0.4, G = 0.8
  • Fully differential or single-ended input/output
  • Differential output designed to drive precision ADCs
    • Drives switched capacitor and Σ-Δ ADCs
    • Rail-to-rail output
  • VOCM pin adjusts output common-mode voltage
  • Robust overvoltage protection up to ±15 V (VS = +5 V)
  • Single supply: 3 V to 10 V
  • Dual supplies: ±1.5 V to ±5 V
  • High performance
    • Suited for driving 18-bit converters up to 4 MSPS
    • 10 nV/√Hz output noise
    • 3 ppm/°C gain drift
    • 500 μV maximum output offset
    • 50 V/μs slew rate
  • Low power: 3.2 mA supply current
Additional Details
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The AD8475 is a fully differential, attenuating amplifier with integrated precision gain resistors. It provides precision attenuation (by 0.4 or 0.8), common-mode level shifting, and single-ended-to-differential conversion along with input overvoltage protection. Power dissipation on a single 5 V supply is only 16 mW.

The AD8475 is a simple to use, fully integrated precision gain block, designed to process signal levels of up to ±10 V on a single supply. It provides a complete interface to make industrial level signals directly compatible with the differential input ranges of low voltage high performance 16-bit or 18-bit single-supply successive approximation (SAR) analog-to-digital converters (ADCs).

The AD8475 comes with two standard pin-selectable gain options: 0.4 and 0.8. The gain of the part is set by driving the input pin corresponding to the appropriate gain.

The AD8475 also provides overvoltage protection from large industrial input voltages up to ±15 V while operating on a single 5 V supply. The VOCM pin adjusts the output voltage common mode for precision level shifting, to match the ADC’s input range and maximize dynamic range.

The AD8475 works extremely 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 in the market, the AD8475 is a high precision amplifier. With 500 μV maximum output offset, 10 nV/√Hz output noise, and −112 dB THD + N, the AD8475 pairs well with high accuracy converters. Considering its low power consumption and high precision, the slew-enhanced AD8475 has excellent speed, settling to 18-bit precision for 4 MSPS acquisition.

The AD8475 is available in a space-saving 16-lead 3 mm × 3 mm LFCSP package and a 10-lead MSOP package. It is fully specified over the −40°C to +85°C temperature range.

Applications

  • ADC drivers
  • Differential instrumentation amplifier building blocks
  • Single-ended-to-differential converters
Part Models 9
1ku List Price Starting From $2.34

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD8475ACPZ-R7
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AD8475ACPZ-RL
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AD8475ACPZ-WP
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AD8475ARMZ
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AD8475ARMZ-R7
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AD8475ARMZ-RL
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AD8475BRMZ
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AD8475BRMZ-R7
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AD8475BRMZ-RL
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Product Lifecycle

PCN

Apr 3, 2017

- 16_0230

Assembly Transfer of Select LFCSP Products to ASE Korea

Apr 28, 2014

- 13_0224

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

Mar 22, 2021

- 21_0001

Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP

AD8475ARMZ

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AD8475ARMZ-R7

PRODUCTION

AD8475ARMZ-RL

PRODUCTION

AD8475BRMZ

PRODUCTION

AD8475BRMZ-R7

PRODUCTION

AD8475BRMZ-RL

PRODUCTION

Oct 30, 2017

- 15_0176

Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines

AD8475ARMZ

PRODUCTION

AD8475ARMZ-R7

PRODUCTION

AD8475ARMZ-RL

PRODUCTION

AD8475BRMZ

PRODUCTION

AD8475BRMZ-R7

PRODUCTION

AD8475BRMZ-RL

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Apr 3, 2017

- 16_0230

arrow down

Assembly Transfer of Select LFCSP Products to ASE Korea

Apr 28, 2014

- 13_0224

arrow down

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

Mar 22, 2021

- 21_0001

arrow down

Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP

AD8475ARMZ

PRODUCTION

AD8475ARMZ-R7

PRODUCTION

AD8475ARMZ-RL

PRODUCTION

AD8475BRMZ

PRODUCTION

AD8475BRMZ-R7

PRODUCTION

AD8475BRMZ-RL

PRODUCTION

Oct 30, 2017

- 15_0176

arrow down

Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines

AD8475ARMZ

PRODUCTION

AD8475ARMZ-R7

PRODUCTION

AD8475ARMZ-RL

PRODUCTION

AD8475BRMZ

PRODUCTION

AD8475BRMZ-R7

PRODUCTION

AD8475BRMZ-RL

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

EVAL-AD8475

AD8475 Evaluation Board

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EVAL-AD8475

AD8475 Evaluation Board

AD8475 Evaluation Board

Product Detail

The board provides the user flexibility to configure the AD8475 in the desired gain (0.4 or 0.8) and to install the suitable input and load impedances.

 

The AD8475-EVALZ board is designed for 8 lead MSOP so that a user can easily evaluate system performance when the AD8475 is mated with any Analog Devices, Inc., SAR ADC. The board can be installed with SMB connectors that mate directly to the Pulsar® Analog-to-Digital Converter Evaluation Kit. See AD8475 data sheet available on line.

reference details image

EVAL-ADMX1002

Ultra-low Distortion Signal Generator Measurement Module

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EVAL-ADMX1002

Ultra-low Distortion Signal Generator Measurement Module

Ultra-low Distortion Signal Generator Measurement Module

Features and Benefits

  • Ultra-low distortion, high-resolution source
    • DC, 50Hz to 40kHz Frequency Range
    • Proprietary digital pre-distortion (DPD) algorithm
    • –130dBc THD @ 1kHz (typ.)
    • Arbitrary waveform generation (AWG) with on-board pattern memory
    • Differential (balanced) output up to 3.6VRMS
  • Fast pattern switching between multiple stored waveforms
  • Small form-factor (60mm x 40mm)
  • Low power, 1W typ. (quiescent)
  • SPI interface for integration into test and measurement systems

Product Detail

The ADMX1002 is an ultra-low distortion sinewave and high-resolution arbitrary waveform generator. This high-performance module demonstrates a proprietary digital pre-distortion algorithm that reduces signal distortion below levels that can be achieved with high-performance digital-to-analog converters (DAC) and amplifiers alone. Its differential output can be set to common-mode levels often required to test high-performance analog-to-digital converters (ADC), audio codecs, and other audio ICs and systems. With an easy-to-use SPI interface and small-form factor, the ADMX1002 can be easily embedded into test systems, or simply used on the bench for measurement and characterization.

APPLICATIONS

  • High-end audio test
  • Analog-to-digital converter characterization and test
  • Sensor and transducer test
  • Frequency response and network analysis
  • ATE
reference details image

EVAL-ADMX1001

Ultra-low Distortion Signal Generator Measurement Module

zoom

EVAL-ADMX1001

Ultra-low Distortion Signal Generator Measurement Module

Ultra-low Distortion Signal Generator Measurement Module

Features and Benefits

  • Ultra-low distortion, high-resolution source
    • DC, 50Hz to 40kHz Frequency Range
    • Proprietary digital pre-distortion (DPD) algorithm
    • –130dBc THD @ 1kHz (typ.)
    • Arbitrary waveform generation (AWG) with on-board pattern memory
    • Differential (balanced) output up to 3.5VRMS
    • Fast pattern switching between multiple stored waveforms
  • Fully Differential input Acquisition Channel
  • Small form-factor (60mm x 40mm)
  • Low power, 1W typ. (quiescent)
  • SPI interface for integration into test and measurement systems

Product Detail

The ADMX1001 is an ultra-low distortion sinewave and high-resolution arbitrary waveform generator with an acquisition channel. This high-performance module demonstrates a proprietary digital pre-distortion algorithm that reduces signal distortion below levels that can be achieved with high-performance digital-to-analog converters (DAC) and amplifiers alone. Its differential output can be set to common-mode levels often required to test high-performance analog-to-digital converters (ADC), audio codecs, and other audio ICs and systems. The signal generator and the acquisition channel can be individually controlled using separate, easy to use, SPI interfaces - combined with the module's small-form factor, the ADMX1001 can be easily embedded into test systems, or simply used on the bench for measurement and characterization.

APPLICATIONS

  • High-end audio test
  • Analog-to-digital converter characterization and test
  • Sensor and transducer test
  • Frequency response and network analysis
  • ATE
Tools & Simulations

Tools & Simulations 4

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Reference Designs

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2 MHz Bandwidth PIN Photodiode Preamp with Dark Current Compensation

Features and Benefits

  • High speed photodiode signal conditioning circuit
  • 91dB dynamic range and circuit consumes only 40 mA
  • Dark current compensation
  • Spectral range from 400 nm to 1050 nm
  • Well suited for portable high speed applications
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High Precision, 24-Bit ADC Driver for Industrial Signals

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Features and Benefits

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  • Singled ended to differential interface to 18-bit SAR converter
  • Low power, total less than 22 mW
  • Single supply 5V rail
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Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals

Features and Benefits

  • Multichannel Isolated Data Acquisition System
  • Industrial Signal Levels
  • 18-bit, 2MSPS Conversion
  • 750kHz Channel Switching Rate

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High Common-Mode Voltage Bidirectional Isolated Current Monitor

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Features and Benefits

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  • Creates isolated supply for digital control
  • 1% accuracy, bidirectional current monitor system
  • Galvanic isolation protects processor
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Multichannel Data Acquisition Simplified Circuit

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Low Power, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial-Level Signals

Features and Benefits

  • 18-Bit 8-Channel Data Acquisition System
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  • 750 kSPS per channel switching rate
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