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AD7813:  +2.7 V to +5.5 V, 400 kSPS 8-/10-Bit Sampling ADC

The AD7813 is a high speed, microprocessor-compatible, 8-/10-bit analog-to-digital converter with a maximum through-put of 400 kSPS. The converter operates off a single +2.7 V to +5.5 V supply and contains a 2.3 ms successive approximation A/D converter, track/hold circuitry, on-chip clock oscillator and 8-bit wide parallel interface. The parallel interface is designed to allow easy interfacing to ...More

AD7813:  +2.7 V to +5.5 V, 400 kSPS 8-/10-Bit Sampling ADC

Product Description

The AD7813 is a high speed, microprocessor-compatible, 8-/10-bit analog-to-digital converter with a maximum through-put of 400 kSPS. The converter operates off a single +2.7 V to +5.5 V supply and contains a 2.3 ms successive approximation A/D converter, track/hold circuitry, on-chip clock oscillator and 8-bit wide parallel interface. The parallel interface is designed to allow easy interfacing to microprocessors and DSPs. The 10-bit conversion result is read by carrying out two 8-bit read operations. The first read operation accesses the 8 MSBs of the ADC conversion result and the second read accesses the 2 LSBs. Using only address decoding logic the AD7813 is easily mapped into the microprocessor address space.

When used in its power-down mode, the AD7813 automatically powers down at the end of a conversion and powers up at the start of a new conversion. This feature significantly reduces the power consumption of the part at lower throughput rates. The AD7813 can also operate in a high speed mode where the part is not powered down between conversions. In this mode of operation the part is capable of providing 400 kSPS throughput.

The part is available in a small, 16-pin, 0.3" wide, plastic dual-in- line package (DIP), in a 16-pin, 0.15" wide, narrow body small outline IC (SOIC) and in a 16-pin thin shrink small outline package (TSSOP).

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TECHNICAL DOCUMENTATION

  • 8-/10-Bit ADC with 2.3 µs Conversion Time
  • On-Chip Track and Hold
  • Operating Supply Range: 2.7 V to 5.5 V
  • 8-Bit Parallel Interface
    8-Bit + 2-Bit Read
  • Analog Input Range: 0 V to VREF
  • Reference Input Range: 1.2 V to VDD
  • Specifications at 2.7 V–3.6 V and 5 V ± 10%
  • Power Performance
    - Normal Operation
       10.5 mW, VDD = 3 V
    - Automatic Power-Down
       34.6 µW @ 1 kSPS, VDD = 3 V
  • Resolution (Bits): 10bit
  • T-Put Rate: 400kSPS
  • # Chan: 1
  • Supply V: Single(+3),Single(+3.3),Single(+5)
  • Pwr Diss: 17.5mW
  • Interface: Byte
  • Ain Range: Uni (Vref)
  • SNR (dB): 58dB
  • Pkg Type: DIP,SOIC,SOP

Functional Block Diagram for AD7813

AD7813 Diagram
Functional Block Diagram for AD7813

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Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
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AD7477A 10 1MSPS 1 17.5mW
AD7441 10 1MSPS 1 9.3mW
AD7440 10 1MSPS 1 9mW
AD7813 10 400KSPS 1 17.5mW
AD7470 10 1.75MSPS 1 12mW
AD7912 10 1MSPS 2 15mW
AD7492 12 1MSPS 1 15mW
AD7492-4 12 400KSPS 1 15mW
AD7492-5 12 1.25MSPS 1 16.5mW
AD7495 12 1MSPS 1 13mW
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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.