Overview

Features and Benefits

  • 16-bit resolution with no missing codes
  • 8-channel multiplexer with choice of inputs
    • Unipolar single-ended
    • Differential (GND sense)
    • Pseudo bipolar
  • Throughput: 500 kSPS INL: ±0.5 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR)
  • Dynamic range: 93.3 dB
  • SINAD: 91.5 dB at 20 kHz
  • THD: −97 dB at 20 kHz
  • Analog input range: 0 V to VREF with VREF up to VDD
  • Multiple reference types
    • Internal 4.096 V
    • External buffered (up to 4.096 V)
    • External (up to VDD)
  • Internal temperature sensor
  • Channel sequencer, selectable 1-pole filter, busy indicator
  • No pipeline delay, SAR architecture
  • Single-supply 5 V operation with 1.8 V to 5 V logic interface
  • Serial interface compatible with SPI, MICROWIRE, QSPI, and DSP
  • Power dissipation
    • 26 mW at 500 kSPS
    • 5.2 μW at 100 SPS
  • Standby current: 50 nA
  • 20-lead 4 mm × 4 mm LFCSP package
  • 20-lead 2.4 mm × 2.4 mm WLCSP package

Product Details

The AD7699 is an 8-channel, 16-bit, charge redistribution successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single power supply, VDD.

The AD7699 contains all components for use in a multichannel, low power data acquisition system, including a true 16-bit SAR ADC with no missing codes; an 8-channel low crosstalk multiplexer useful for configuring the inputs as single-ended (with or without ground sense), differential, or bipolar; an internal 4.096 V low drift reference and buffer; a temperature sensor; a selectable one-pole filter; and a sequencer that is useful when channels are continuously scanned in order.

The AD7699 uses a simple serial port interface (SPI) for writing to the configuration register and receiving conversion results. The SPI interface uses a separate supply, VIO, which is set to the host logic level. Power dissipation scales with throughput.

The AD7699 is housed in a tiny 20-lead LFCSP and a 20-ball WLCSP with operation specified from −40°C to +85°C.

Applications

  • Battery-powered equipment
  • Medical instruments: ECG/EKG
  • Mobile communications: GPS
  • Personal digital assistants
  • Power line monitoring
  • Data acquisition
  • Seismic data acquisition systems
  • Instrumentation
  • Process control

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)

Software & Systems Requirements

Tools & Simulations

Product Recommendations

AD7699 Companion Parts

Recommended Driver Amplifiers

Recommended Voltage References

  • For low noise, low dropout, 4.096V reference: ADR444, ADR435.
  • For low noise, high current output, 4.096V reference: ADR434.

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.