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AD7865:  Fast, Low-Power, 4-Channel, Simultaneous Sampling, 14-bit ADC

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 ...More

AD7865:  Fast, Low-Power, 4-Channel, Simultaneous Sampling, 14-bit ADC

Product Description

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.

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  • 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
  • Resolution (Bits): 14bit
  • T-Put Rate: 350kSPS
  • # Chan: 4
  • Supply V: Single(+5)
  • Pwr Diss: 160mW
  • Interface: Par
  • Ain Range: Bip 10V,Bip 2.5V,Bip 5.0V,Uni 2.5V,Uni 5.0V
  • SNR (dB): 80dB
  • Pkg Type: QFP

Functional Block Diagram for AD7865

AD7865 Diagram
Functional Block Diagram for AD7865

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Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
AD7865 14 350KSPS 4 160mW
AD7367 14 1MSPS 4 88.7mW
AD7934 12 1.5MSPS 4 16mW
AD7323 13 500KSPS 4 17mW
AD7924 12 1MSPS 4 13.5mW
AD7654 16 500KSPS 4 135mW
AD7655 16 1MSPS 4 135mW
AD9251-20 14 20MSPS 2 86.5mW
AD7357 14 4.25MSPS 2 36mW
AD7324 13 1MSPS 4 30mW
AD7264-5 14 1MSPS 2 120mW
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Pricing, Packaging & Availability

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Model
The model number is a specific version of a generic that can be purchased or sampled.

Status
Status indicates the current lifecycle of the product. This can be one of 4 stages:
  • Pre-Release: The model has not been released to general production, but samples may be available.
  • Production: The model is currently being produced, and generally available for purchase and sampling.
  • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
  • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
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.

Production Availability
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

RoHS Compliant
Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

View PCN
This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

*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.