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AD7609:  8-Channel Differential DAS with 18-Bit, Bipolar, Simultaneous Sampling ADC

Product Details

Product Status:Recommended for New Designs

The AD7609 is an 18-bit, 8-channel, true differential, simultaneous sampling analog-to-digital data acquisition system (DAS). The part contains analog input clamp protection, a second-order antialiasing filter, a track-and-hold amplifier, an 18-bit charge redistribution successive approximation analog-to-digital converter (ADC), a flexible digital filter, a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces.

The AD7609 operates from a single 5 V supply and can accommodate ±10 V and ±5 V true bipolar differential input signals while sampling at throughput rates up to 200 kSPS for all channels. The input clamp protection circuitry can tolerate voltages up to ±16.5 V. The AD7609 has 1 MΩ analog input impedance regardless of sampling frequency. The single supply operation, on-chip filtering, and high input impedance elimi-nate the need for driver op amps and external bipolar supplies. The AD7609 antialiasing filter has a −3 dB cutoff frequency of 32 kHz and provides 40 dB antialias rejection when sampling at 200 kSPS. The flexible digital filter is pin driven, yields improvements in SNR, and reduces the −3 dB bandwidth.

APPLICATIONS

  • Power line monitoring and protection systems
  • Multiphase Motor Control
  • Instrumentation and control systems
  • Multiaxis positioning systems
  • Data Acquisition Systems

FEATURES and BENEFITS

  • 8 simultaneously sampled inputs
  • True Differential Inputs
  • True bipolar analog input ranges: ±10 V, ±5 V
  • Single 5 V analog supply and 2.3 V to 5.25 V VDRIVE
  • Fully integrated data acquisition solution
    Analog input clamp protection
    Input buffer with 1 MΩ analog input impedance
    Second-order antialiasing analog filter
  • Flexible parallel/serial interface
  • See data sheet for additional features

Functional Block Diagram for AD7609

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Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products


Recommended External 2.5V Voltage Reference for the AD7609

  • For high accuracy, low noise and excellent long term stability, we recommend the ADR421.
  • For high accuracy, low noise and higher output current, we recommend the ADR431.
Recommended Digital Isolators for the AD7609
  • For high performance, low power, bidirectional communication, we recommend the ADuM1402.
  • For isolated power in 3.3V or 5V outputs, we recommend the ADuM5000 isolated DC-DC converter.
  • For high performance, low power, bidirectional communication with integrated isolated power, we recommend the ADuM5402.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7609 Model Options
Price Table Help

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.

AD7609 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7609EDZ Status: Production Evaluation Board $150.00 Yes -
EVAL-CED1Z Status: Production Evaluation Board $249.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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