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AD7277:  3 MSPS,10-Bit ADC in 6-Lead TSOT

Product Details

The AD7277 is a 10-bit, high speed, low power, successive-approximation ADC. The parts operate from a single 2.35 V to 3.6 V power supply and feature throughput rates of up to 3 MSPS. The parts contain a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 55 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 part.

The AD7277 uses advanced design techniques to achieve very low power dissipation at high throughput rates.

The reference for the part is taken internally from VDD. This allows the widest dynamic input range to the ADC; therefore, the analog input range for the part is 0 to VDD. The conversion rate is determined by the SCLK

Product Highlights

  1. 3 MSPS ADCs in a 6-lead TSOT package
  2. AD7476/AD7477/AD7478 and AD7476A/AD7477A/ AD7478A pin-compatible
  3. High throughput with low power consumption
  4. Flexible power/serial clock speed management. This allows maximum power efficiency at low throughput rates
  5. Reference derived from the power supply
  6. No pipeline delay. The parts feature a standard successive approximation ADC with accurate control of the sampling instant via a CS input and once-off conversion control.


  • Throughput rate: 3 MSPS
  • Specified for VDD of 2.35 V to
    3.6 V
  • Power consumption
    12.6 mW at 3 MSPS with 3 V supplies
  • Wide input bandwidth
    70 dB SNR at 1 MHz input frequency
  • Flexible power/serial clock speed management
  • No pipeline delays
  • Temperature range: −40°C to +125°C
  • Please see data sheet for additional features.

Functional Block Diagram for AD7277

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Title Content Type File Type
AD7276/AD7277/AD7278: 3 MSPS, 12-/10-/8-Bit ADCs in 6-Lead TSOT Data Sheet  (Rev C, 05/2011) (pdf, 596 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

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 AD7277 Recommended Precison References for the AD7277
  • For high precision and improved power performance, we recommend the REF193.
  • For improved SNR at 3V, we recommend the AD780.
Recommended Power Solutions

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Price, packaging, availability

AD7277 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD7277ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $2.06 $1.75 Y  Material Info PCN Purchase
AD7277ARMZ-RL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $1.75 Y  Material Info PCN Purchase
AD7277AUJZ-500RL7 Status: Production 6 ld TSOT 6 Ind Reel, 500 $2.06 $1.75 Y  Material Info PCN Purchase
AD7277AUJZ-RL7 Status: Last Time Buy 6 ld TSOT 6 Ind Reel, 3000 - $1.75 Y  Material Info PCN/PDN Purchase
AD7277BRMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $4.29 $3.64 Y  Material Info PCN Purchase Sample
AD7277BRMZ-REEL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $3.64 Y  Material Info PCN Purchase
AD7277BUJZ-500RL7 Status: Production 6 ld TSOT 6 Ind Reel, 500 $4.29 $3.64 Y  Material Info PCN Purchase
AD7277BUJZ-REEL7 Status: Production 6 ld TSOT 6 Ind Reel, 3000 - $3.64 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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