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AD7923:  4-Channel 200 kSPS, 12-Bit A/D Converter with Sequencer in 16-Lead TSSOP

The AD7923 is a 12-bit, high speed, low power, 4-channel, successive-approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 200 kSPS. The part contains a low-noise, wide bandwidth track/hold amplifier, which can handle input frequencies in excess of 8 MHz.

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AD7923:  4-Channel 200 kSPS, 12-Bit A/D Converter with Sequencer in 16-Lead TSSOP

Product Description

The AD7923 is a 12-bit, high speed, low power, 4-channel, successive-approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 200 kSPS. The part contains a low-noise, wide bandwidth track/hold amplifier, which can handle input frequencies in excess of 8 MHz.

The conversion process and data acquisition are controlled using CS and the serial clock signal, allowing the device to easily interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. There are no pipeline delays associated with the part.

The AD7923 uses advanced design techniques to achieve very low power dissipation at maximum throughput rates. At maximum throughput rates, the AD7923 consumes 0.85 mA with 3 V supplies and, with 5V supplies, the current consumption is 1 mA.

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EVALUATION BOARDS & DEVELOPMENT KITS

  • Fast Throughput Rate: 200 kSPS
  • Specified for VDD of 2.7 V to 5.25 V
  • Low Power:
    - 1.95 mW max at 200 kSPS with 3 V Supplies
    - 5 mW max at 200 kSPS with 5 V Supplies
  • Four (Single Ended) Inputs with Sequencer
  • Flexible Power/Serial Clock Speed Management
  • Wide Input Bandwidth: 69.5 dB SNR at 50 kHz Input Frequency
  • No Pipeline Delays
  • High Speed Serial Interface SPI® /QSPI™ /MICROWIRE™ /DSP Compatible
  • Shutdown Mode: 0.5 µA max
  • 16-Pin TSSOP Package
  • Resolution (Bits): 12bit
  • T-Put Rate: 200kSPS
  • # Chan: 4
  • Supply V: Single(+3),Single(+3.3),Single(+5)
  • Pwr Diss: 7.5mW
  • Interface: Ser,SPI
  • Ain Range: Uni (Vref),Uni (Vref) x 2
  • SNR (dB): 70dB
  • Pkg Type: SOP

Functional Block Diagram for AD7923

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Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
AD7923 12 200KSPS 4 7.5mW
AD7453 12 555KSPS 1 7.25mW
AD7466 12 200KSPS 1 900µW
AD7452 12 555KSPS 1 7.25mW
AD7927 12 200KSPS 8 7.5mW
AD7924 12 1MSPS 4 13.5mW
AD7934 12 1.5MSPS 4 16mW
AD7866 12 1MSPS 4 24mW
AD7862 12 250KSPS 4 75mW
AD7366 12 1MSPS 4 88.8mW
AD7864 12 520KSPS 4 120mW
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Pricing, Packaging & Availability

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Model
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Status
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  • 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.