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AD7694:  250 kSPS 16-BIT PulSAR® A/D Converter in µSOIC

Product Status:Production
Data
Sheet
AD7694 Data Sheet Rev A, 05/2005 (pdf 341kB)

Product Details

Product Status:Production
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The AD7694 is a 16-bit, 250 kSPS, charge redistribution successive-approximation Analog-to-Digital Converter which operates from a single power supply, VDD between 2.7 V to 5.25 V. It contains a very low power high-speed 16-bit sampling ADC with no missing codes (B grade), an internal conversion clock and a SPI compatible serial interface port. The part also contains a low noise, wide bandwidth, very short aperture delay track/hold circuit. On the CNV rising edge, it samples an analog input IN+ between 0 V to REF with respect to a ground sense IN-. The reference voltage REF is applied externally and can be set up to the supply voltage.

Its power scales linearly with throughput.

The AD7694 is housed in a 8-lead µSOIC with operation specified from –40°C to +85°C.

Applications

  • Battery Powered Equipments:
  • Medical instruments
  • Mobile communications
  • Personal digital assistants
  • Data Acquisition
  • Instrumentation
  • Process Control

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FEATURES and BENEFITS

  • 16 Bits Resolution
  • Throughput: 250 kSPS
  • INL: ±4 LSB Max
  • Power Dissipation:
    800 µA @ 5V/100 kSPS
    540 µA @ 2.7V/100 kSPS
  • Pseudo-Differential Analog Input Range: 0 V to VREF with VREF up to VDD
  • S/(N+D): 92 dB @ 20 kHz
  • No Pipeline Delay
  • Single Supply Operation 2.7 V or 5 V
  • Serial Interface SPI®/QSPI™/µWire/DSP compatible
  • µSOIC Package (µSO8)
  • Improved 2nd Source of LTC1864 and LTC1864L

Functional Block Diagram for AD7694

AD7694 Diagram
Typical Applications and Other Diagrams

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Documentation

Title Content Type File Type
AD7694: 16-Bit, 250 kSPS PulSAR ADC in MSOP Data Sheet  (Rev A, 05/2005) (pdf, 341 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
UG-340: Evaluation Board for the 10-Lead Family 14-/16-/18-Bit PulSAR ADCs  (pdf, 4636 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
When high performance and low power make the design, ADI converters make the difference. Overview HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary 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.

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Price, packaging, availability

AD7694 Model Options
Model Package Pins Temp.
Range 		Packing,
Qty 		Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7694ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $6.72 $6.07 Y  Material Info PCN Purchase Sample
AD7694ARMZRL7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $6.07 Y  Material Info PCN Purchase
AD7694BRMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $8.40 $7.59 Y  Material Info PCN Purchase Sample
AD7694BRMZRL7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $7.59 Y  Material Info Notify Me Purchase
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.

AD7694 Evaluation Kit
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD7694SDZ Status: Production Evaluation Board $99.00 Yes -
EVAL-SDP-CB1Z Status: Production Evaluation Controller Board $99.00 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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