AD7476A:  12-Bit, 1 MSPS, Low-Power A/D Converter in SC70 and MSOP Packages

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 ...More

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

AD7476A:  12-Bit, 1 MSPS, Low-Power A/D Converter in SC70 and MSOP Packages

Product Description

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.

Features

  • 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

Diagrams

AD7476A Functional Block Diagram
AD7476A Functional Block Diagram

Specifications

Resolution (Bits) 12bit
T-Put Rate 1MSPS
# Chan 1
Supply V Single(+2.5),Single(+3),Single(+3.3),Single(+5)
Pwr Diss 17.5mW
Interface Ser,SPI
Ain Range Uni Vdd
SNR (dB) 71dB
Pkg Type SC70,SOP

AD7357 - Differential Input, Dual, Simultaneous Sampling, 4.25 MSPS, 14-Bit, SAR ADC

AD7780 - 24-Bit Pin-Programmable Low Power Σ−Δ ADC

AD7781 - 20-Bit, Pin-Programmable, Ultralow Power Sigma-Delta ADC

AD7192 - 4.8 kHz Ultra-Low Noise 24-Bit Sigma-Delta ADC with PGA

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Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
AD7492-1.25MSPS 12 1.25MSPS 1 16.5mW
AD7492-1MSPS 12 1MSPS 1 16.5mW
AD7495 12 1MSPS 1 13mW
AD7450 12 1MSPS 1 1.3mW
AD7450A 12 1MSPS 1 9mW
AD7476A 12 1MSPS 1 17.5mW
AD7476 12 1MSPS 1 17.5mW
AD7472 12 1.5MSPS 1 12mW
AD7475 12 1MSPS 1 10.5mW
AD7451 12 1MSPS 1 9.25mW
AD7922 12 1MSPS 2 15mW
Pricing, Packaging & Availability

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*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.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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