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AD7699:  16-Bit, 8-Channel, 500 kSPS PulSAR ADC

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 multip-lexer 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 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

FEATURES and BENEFITS

  • 16-bit resolution with no missing codes
  • 8-channel multiplexer with choice of imputs
    Unipolar single ended
    Differential (GND sense)
    Psuedobipolar
  • Throughput: 500 kSPS
  • INL/DNL: ±0.5 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR)
  • Dynamic range: 93.3 dB
  • SINAD: 91.5 dB @ 20 kHz
  • THD: −97 dB @ 20 kHz
  • Analog input range: 0 V to VREF with VREF up to VDD
  • See data sheet for additional features

AD7699 Functional Block Diagram

Similar Products

High Resolution - Simultaneous Sampling14/16/18-Bit PulSAR ADCs
High Resolution - Muxed 14/16-Bit PulSAR ADCs

Documentation

Title Content Type File Type
AD7699: 16-Bit, 8-Channel, 500 kSPS PulSAR ADC Data Sheet (Rev C, 05/2014) (pdf, 246 kB) Data Sheets PDF
AN-931: Understanding PulSAR ADC Support Circuitry  (pdf, 299 kB)
This application note discusses in general the pitfalls that occur regularly when using SAR ADCs and, more importantly, how to easily prevent them.
Application Notes PDF
AN-932: Power Supply Sequencing  (pdf, 95 kB) Application Notes PDF
EVAL-AD76MUXEDZ: Evaluation Board For AD7682/89/99/7949 PulSAR® ADCs (Preliminary, Rev. PrD)  (pdf, 4664 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
CED1Z FPGA Project for AD7699 with Nios driver (Wiki Site) Device Drivers HTML

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 Driver Amplifiers for the AD7699
  • For low noise and low frequency at high supply voltages( up to +-18V), we suggest the AD8597, ADA4627-1 or the dual AD8599.
  • For low noise and low frequency applications at medium supply voltages( up to +-13V), we recommend the AD8610, or the dual AD8620.
Recommended Voltage References for the AD7699
  • For low noise, high current output, 4.096V reference, we recommend the ADR434.
  • For low noise, low dropout, 4.096V reference, we suggest the ADR444.
  • For low noise, high current output, 5V reference, we recommend the ADR435.
Recommended Power Solutions

  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD7699 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.

AD7699 Evaluation Kit
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7699EDZ Status: Production Evaluation Board $99.00 Yes -
EVAL-CED1Z Status: Production Evaluation Controller 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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