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AD7866:  Dual 1MSPS, 12-Bit, 2-Channel SAR ADC with Serial Interface

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.

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

Functional Block Diagram for AD7866

Documentation

Title Content Type File Type
AD7866: Dual 1 MSPS, 12-Bit, 2-Channel SAR ADC with Serial Interface Data Sheet  (Rev A, 02/2003) (pdf, 579 kB) Data Sheets PDF
CN-0341: Magnetoresistive Linear Position Measurement  (pdf, 481 kB) Circuit Note PDF
CN-0323: Magnetoresistive Angle Measurement  (pdf, 342 kB) Circuit Note PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Direct Digital Synthesis (DDS) Controls Waveforms in Test, Measurement, and Communications
(Analog Dialogue, Vol. 39, August 2005)
Analog Dialogue HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD7866 IBIS Model  (ibs) IBIS Models IBS

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Price, packaging, availability

AD7866 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7866ARU Status: Production 20 ld TSSOP 20 Ind Tube, 75 $8.13 $6.96 N  Material Info PCN Purchase
AD7866ARUZ Status: Production 20 ld TSSOP 20 Ind Tube, 75 $7.03 $6.02 Y  Material Info PCN Purchase Sample
AD7866ARUZ-REEL Status: Production 20 ld TSSOP 20 Ind Reel, 2500 - $6.02 Y  Material Info PCN Purchase
AD7866ARUZ-REEL7 Status: Production 20 ld TSSOP 20 Ind Reel, 1000 - $6.02 Y  Material Info PCN Purchase
AD7866BRU Status: Production 20 ld TSSOP 20 Ind Tube, 75 $9.49 $8.06 N  Material Info PCN Purchase
AD7866BRU-REEL7 Status: Last Time Buy 20 ld TSSOP 20 Ind Reel, 1000 - $8.06 N  Material Info PCN/PDN Purchase
AD7866BRUZ Status: Production 20 ld TSSOP 20 Ind Tube, 75 $8.22 $6.98 Y  Material Info PCN Purchase Sample
AD7866BRUZ-REEL Status: Production 20 ld TSSOP 20 Ind Reel, 2500 - $6.98 Y  Material Info PCN Purchase
AD7866BRUZ-REEL7 Status: Production 20 ld TSSOP 20 Ind Reel, 1000 - $6.98 Y  Material Info PCN 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.


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