Features and Benefits

  • Dual 12-Bit, 2-Channel ADC
  • Fast Throughput Rate 1 MSPS
  • Specified for VDD of 2.7 V to 5.25 V
  • Low Power:
    11.4 mW Max at 1 MSPS with 3 V Supplies
    24 mW Max at 1 MSPS with 5 V Supplies
  • Wide Input Bandwidth
    70 dB SNR at 300 kHz Input Frequency
  • Onboard Reference 2.5 V
  • Flexible Power/Throughput Rate Management
  • Simultaneous Conversion/Read
  • No Pipeline Delays
  • High-Speed Serial Interface SPI®/QSPI/ MICROWIRE/DSP Compatible
  • Shut-Down Mode: µA Max
  • 20-Lead TSSOP Package

Product Details

The AD7866 is a dual 12-bit high-speed, low power, successive-approximation ADC. The part operates from a single 2.7 V to 5.25 V power supply and features throughput rates up to 1 MSPS. The device contains two ADCs, each preceded by a low-noise, wide bandwidth track/hold amplifier, which can handle input frequencies in excess of 10 MHz.

The conversion process and data acquisition are controlled using standard control inputs allowing easy interfacing to microprocessors or DSPs. The input signal is sampled on the falling edge of CS and conversion is also initiated at this point. The conversion time is determined by the SCLK frequency. There are no pipelined delays with the part.

The AD7866 uses advanced design techniques to achieve very low power dissipation at high throughput rates. With 3 V supplies and 1 MSPS throughput rate, the part consumes a maximum of 3.8 mA. With 5 V supplies and 1 MSPS, the current consumption is a maximum of 4.8 mA. The part also offers flexible power/throughput rate management when operating in sleep mode.

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.

Evaluation Kits (1)

Tools & Simulations

IBIS Models

Reference Designs (1)

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.

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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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