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AD7477A:  10-Bit, 1 MSPS, Low-Power A/D Converter in SC70 and MSOP Packages

Product Details

The AD7476A/AD7477A/AD7478A are 12-bit, 10-bit, and 8-bit high speed, low power, successive-approximation analog-to-digital converters (ADCs), respectively. The parts operate from a single 2.35 V to 5.25 V power supply and feature throughput rates up to 1 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 13 MHz. The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS, and the conversion is also initiated at this point. There are no pipeline delays associated with the parts. The AD7476A/AD7477A/ AD7478A use advanced design techniques to achieve low power dissipation at high throughput rates. The reference for the part is taken internally from VDD to allow the widest dynamic input range to the ADC. Thus, the analog input range for the part is 0 V to VDD. The conversion rate is determined by the SCLK.


  • Fast throughput rate: 1 MSPS
  • Specified for VDD of 2.35 V to 5.25 V
  • Low power
    3.6 mW at 1 MSPS with 3 V supplies
    12.5 mW at 1 MSPS with 5 V supplies
  • Wide input bandwidth
    71 dB SNR at 100 kHz input frequency
  • Flexible power/serial clock speed management
  • No pipeline delays
  • High speed serial interface
    SPI®/QSPI™/MICROWIRE™/DSP compatible
  • Standby mode: 1 μA maximum
  • 6-lead SC70 package
  • 8-lead MSOP package

AD7477A Functional Block Diagram

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Of Note ...

The SC70 package is the latest breakthrough for small-size ADCs with resolutions up to 12 bits.


Title Content Type File Type
AD7476A/AD7477A/AD7478A: 2.35 V to 5.25 V, 1 MSPS,12-/10-/8-Bit ADCs in 6-Lead SC70 Data Sheet  (Rev F, 01/2011) (pdf, 625 kB) Data Sheets PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
8- to 18-Bit SAR ADCs ... From the Leader in High Performance Analog  (pdf, 1885 kB)
8- to 18-Bit SAR ADCs with Sample Rates up to 3 MSPS -- The latest additions to ADI’s ADC portfolio offer unrivaled functionality in terms of channel count and power supply voltage, optimal power/speed ratios, and the smallest packages to meet the demands of any data acquisition application, including portable, industrial, medical, wireless, and communications.
Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD74xx - No-OS Driver for Renesas Microcontroller Platforms Device Drivers HTML
AD74xx - No-OS Driver for Microchip Microcontroller Platforms Device Drivers HTML
IIO Single Channel Serial ADC Linux Driver (Wiki Site) Device Drivers HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products

Recommended Input Buffer Amplifiers for the AD7477A

Recommended Precison References for the AD7477A
  • For high precision and improved power performance, we recommend the REF193 (3V) or REF195 (5V).
  • For improved SNR at 3V, we recommend the AD780.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7477A Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD7477AAKSZ-500RL7 Status: Production 6 ld SC70 6 Ind Reel, 500 $2.98 $2.53 Y  Material Info PCN Purchase Sample
AD7477AAKSZ-REEL Status: Production 6 ld SC70 6 Ind Reel, 10000 - $2.53 Y  Material Info PCN Purchase
AD7477AARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $2.98 $2.53 Y  Material Info PCN Purchase
AD7477AARMZ-REEL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $2.53 Y  Material Info PCN Purchase
AD7477AARMZ-REEL7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $2.53 Y  Material Info PCN Purchase
AD7477AWARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $3.57 $3.04 Y  Material Info PCN Purchase Sample
AD7477AWARMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $3.04 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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