AD8476
PRODUCTIONLow Power, Unity Gain Fully Differential Amplifier & ADC Driver
- Part Models
- 12
- 1ku List Price
- Starting From $2.34
Part Details
- 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
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
Documentation
Data Sheet 1
User Guide 1
Circuit Note 1
Analog Dialogue 2
Webcast 1
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.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD8476ACPZ-R7 | 16-Lead LFCSP (3mm x 3mm w/ EP) | ||
| AD8476ACPZ-RL | 16-Lead LFCSP (3mm x 3mm w/ EP) | ||
| AD8476ACPZ-WP | 16-Lead LFCSP (3mm x 3mm w/ EP) | ||
| AD8476ARMZ | 8-Lead MSOP | ||
| AD8476ARMZ-R7 | 8-Lead MSOP | ||
| AD8476ARMZ-RL | 8-Lead MSOP | ||
| AD8476BCPZ-R7 | 16-Lead LFCSP (3mm x 3mm w/ EP) | ||
| AD8476BCPZ-RL | 16-Lead LFCSP (3mm x 3mm w/ EP) | ||
| AD8476BCPZ-WP | 16-Lead LFCSP (3mm x 3mm w/ EP) | ||
| AD8476BRMZ | 8-Lead MSOP | ||
| AD8476BRMZ-R7 | 8-Lead MSOP | ||
| AD8476BRMZ-RL | 8-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
| No Match Found | ||
|
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 | |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
SPICE Model 1
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.
Open ToolSignal Chain Designer - BETA
Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.
Open ToolEvaluation Kits
AD8476 Evaluation Board
Resources
Reference Designs
Thermocouple Temperature Measurement System with Amplifier - Based Cold Junction Compensation