Overview
Features and Benefits
- 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
Product Details
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
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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Versatile, Precision Single-Ended-to-Differential Signal Conversion Circuit with Adjustable Output Common Mode Boosts System Dynamic Range11/1/2015 Analog Dialogue
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Versatile, Low-Power, Precision Single-Ended-to-Differential Converter10/1/2012 Analog Dialogue
Tools & Simulations
SPICE Model
CIR
AD8476 SPICE Macro Model
4.92 K
Design Tool
ADI DiffAmpCalc™
ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.
Reference Designs (1)
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
PCN-PDN Information
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Sample & Buy
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Buy Now Pricing
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List Pricing
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Lead Times
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Sampling
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.