AD7356:  Differential Input, Dual, Simultaneous Sampling, 5 MSPS, 12-Bit, SAR ADC

The AD73561 is a dual, 12-bit, high speed, low power, successive approximation ADC that operates from a single 2.5 V power supply and features throughput rates up to 5 MSPS. The part ...More

For higher resolution see the AD7357 14-bit, 4.25 MSPS

AD7356:  Differential Input, Dual, Simultaneous Sampling, 5 MSPS, 12-Bit, SAR ADC

Product Description

The AD73561 is a dual, 12-bit, high speed, low power, successive approximation ADC that operates from a single 2.5 V power supply and features throughput rates up to 5 MSPS. The part contains two ADCs, each preceded by a low noise, wide band- width track-and-hold circuit that can handle input frequencies in excess of 110 MHz.

The conversion process and data acquisition use standard control inputs allowing for easy interfacing to microprocessors or DSPs. The input signal is sampled on the falling edge of CS; a conversion is also initiated at this point. The conversion time is determined by the SCLK frequency.

The AD7356 uses advanced design techniques to achieve very low power dissipation at high throughput rates. With a 2.5 V supply and a 5 MSPS throughput rate, the part consumes typically 14 mA. The part also offers a flexible power/throughput rate management option.

The analog input range for the part is the differential common mode ±VREF/2. The AD7356 has an on-chip 2.048 V reference that can be overdriven when an external reference is preferred.

The AD7356 is available in a 16-lead thin shrink small outline package (TSSOP).

Product Highlights

  1. Two Complete ADC Functions.
    These functions allow simultaneous sampling and conversion of two channels. The conversion result of both channels is simultaneously available on separate data lines or in succession on one data line if only one serial port is available.
  2. High Throughput with Low Power Consumption.
    The AD7356 offers a 5 MSPS throughput rate with 36 mW power consumption.
  3. No Conversion Latency.
    The AD7356 features two standard successive approximation ADCs with accurate control of the sampling instant via a CS input and, once off, conversion control.

1Protected by U.S. Patent No. 6,681,332

Data Sheet, Rev. 0, 11/08

Features

  • Dual 12-bit SAR ADC
  • Simultaneous Sampling
  • Throughput rate: 5 MSPS per channel
  • Specified for VDD at 2.5 V
  • No conversion latency
  • Power dissipation: 36 mW at 5 MSPS
  • On-chip reference: 2.048 V ± 0.25%, 6ppm/°C
  • See Data Sheet for Additional Information
Circuits from the Lab

Find more at our Circuits Library.

Products Used in This Circuit:
AD7356, AD8138, AD8638, OP07D, OP177

Circuit Types:  ADC Circuit/Driver
Applications:  Instrumentation; Medical; Process Control
Optimized For:  High Performance; Low Noise and Distortion

Diagrams

AD7356 Functional Block Diagram
Functional Block Diagram for AD7356

Specifications

Resolution (Bits) 12bit
T-Put Rate 5MSPS
# Chan 2
Supply V Multi(+2.5, +3),Multi(+2.5, +3.3),Single(+2.5)
Pwr Diss 59mW
Interface Ser,SPI
Ain Range (Vref) p-p,2.048 V p-p
SNR (dB) 71.5dB
Pkg Type SOP

Explore Other Products

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

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

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

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

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Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
AD7356 12 5MSPS 2 59mW
AD9238-20 12 20MSPS 2 212mW
AD9627-80 12 80MSPS 2 490mW
AD9238-65 12 65MSPS 2 698mW
AD9627-150 12 150MSPS 2 890mW
AD7352 12 3MSPS 2 45mW
AD10242 12 40MSPS 2 2W
AD10200 12 105MSPS 2 2.2W
AD7922 12 1MSPS 2 15mW
AD7366-5 12 500KSPS 2 54.5mW
AD7921 12 250KSPS 2 20mW
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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