Overview

Features and Benefits

  • Multiple pins/software programmable input ranges: 5 V, 10 V, ±5 V, ±10 V
  • Pins or serial SPI®-compatible input ranges/mode selection
  • Throughput
    750 kSPS (warp mode)
    600 kSPS (normal mode)
    500 kSPS (impulse mode)
  • INL: ±0.75 LSB typical, ±1.5 LSB maximum (±23 ppm of FSR)
  • 16-bit resolution with no missing codes
  • SNR: 92 minimum (5 V) @ 2 kHz, 94 dB typical (±10 V) @ 2 kHz
  • THD: −107 dB typical
  • iCMOS™ process technology
  • 5 V internal reference: typical drift 3 ppm/°C; TEMP output
  • No pipeline delay (SAR architecture)
  • Parallel (16- or 8-bit bus) and serial 5 V/3.3 V interface
  • SPI-/QSPI™-/MICROWIRE™-/DSP-compatible

Product Details

The AD7612 is a 16-bit charge redistribution successive approximation register (SAR), architecture analog-to-digital converter (ADC) fabricated on Analog Devices, Inc.'s iCMOS high voltage process. The device is configured through hardware or via a dedicated write only serial configuration port for input range and operating mode. The AD7612 contains a high speed 16-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. A falling edge on CNVST samples the analog input on IN+ with respect to a ground sense, IN–. The AD7612 features four different analog input ranges and three different sampling modes: warp mode for the fastest throughput, normal mode for the fastest asynchronous throughput, and impulse mode where power consumption is scaled linearly with throughput. Operation is specified from −40°C to +85°C.

Product Highlights

  1. Programmable input range and mode selection. Pins or serial port for selecting input range/mode select.
  2. Fast throughput. In warp mode, the AD7612 is 750 kSPS.
  3. Superior Linearity. No missing 16-bit code. ±1.5 LSB max INL.
  4. Internal Reference. 5 V internal reference with a typical drift of ±3 ppm/°C and an on-chip temperature sensor.
  5. Serial or Parallel Interface. Versatile parallel (16- or 8-bit bus) or 2-wire serial interface arrangement compatible with 3.3 V or 5 V logic.

Applications

  • Process control
  • Medical instruments
  • High speed data acquisition
  • Digital signal processing
  • Instrumentation
  • Spectrum analysis
  • ATE

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)

Product Recommendations

AD7612 Companion Parts

Recommended Driver Amplifiers

  • For low noise, low frequency, low distortion and 12V supplies: ADA4841-1.
  • For low noise, high frequency and +/ 12V supplies: AD8021, ADA4898-1, ADA4898-2.
  • For low bias current, low frequency and +/-13V supplies: AD8610.
  • For low noise, low frequency, ultralow distortion and +/-18V supplies: AD8597, ADA4627-1.

Recommended Voltage References

  • For low drift and high current output applications: ADR435.
  • For low drift and low noise applications: ADR445.

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

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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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Evaluation Boards Pricing displayed is based on 1-piece.
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.