Overview

Features and Benefits

  • Fast (2.4 µs) 14-Bit ADC
  • Four Simultaneously Sampled Inputs
  • Four Track/Hold Amplifiers
  • 0.35 µs Track/Hold Acquisition Time
  • 2.4 µs Conversion Time per Channel
  • HW/SW Select of Channel Sequence for Conversion
  • Single Supply Operation
  • Low Power, 115 mW Typ
  • Selection of Input Ranges:
  • ±10 V, ±5 V and ±2.5 V
    0 V to 5 V and 0 V to 2.5 V
  • High Speed Parallel Interface Allows Interfacing to 3 V Processors
  • Power Saving Mode, 15 µW Typ
  • Overvoltage Protection on Analog Inputs

Product Details

The AD7865 is a fast, low power, four-channel simultaneous sampling 14-bit A/D converter that operates from a single +5 V supply. The part contains a 2.5 µs successive approximation ADC, four track/hold amplifiers, 2.5 V reference, on chip clock oscillator, signal conditioning circuitry and a high speed parallel interface. The input signals on four channels are sampled simultaneously thus preserving the relative phase information of the signals on the four analog inputs. The part accepts analog input ranges of ±10 V, ±5 V or ±2.5 V. Overvoltage protection on the analog inputs for the part allows the input voltage to go to ±20 V without damaging the parts or affecting a conversion in progress.

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations

IBIS Models

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

Discussions

AD7865 Discussions

RE: Input Impedance of AD7865-2
8 week(s) ago in Precision ADCs
RE: An issue about AD7865
11 week(s) ago in Precision ADCs
RE: 2 Questions for your AD7865-1
11 week(s) ago in Precision ADCs
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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.


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