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AD7854:  3 V to 5 V Single Supply, 200 kSPS, 12-Bit, Parallel Sampling ADC

Product Details


The AD7854/AD7854L is a high speed, low power, 12-bit ADC that operates from a single 3 V or 5 V power supply, the AD7854 being optimized for speed and the AD7854L for low power. The ADC powers up with a set of default conditions at which time it can be operated as a read-only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and has a number of power-down options for low power applications.

The AD7854 is capable of 200 kHz throughput rate while the AD7854L is capable of 100 kHz throughput rate. The input track-and-hold acquires a signal in 500 ns and features a pseudo-differential sampling scheme. The AD7854 and AD7854L input voltage range is 0 to VREF (unipolar) and -VREF/2 to +VREF/2, centered at VREF/2 (bipolar). The coding is straight binary in unipolar mode and twos complement in bipolar mode. Input signal range is to the supply and the part is capable of converting full-power signals to 100 kHz.

CMOS construction ensures low power dissipation of typically 5.4 mW for normal operation and 3.6 µW in power-down mode. The part is available in 28-pin, 0.6 inch wide dual-in-line package (DIP), 28-lead small outline (SOIC) and 28-lead small shrink outline (SSOP) packages.

FEATURES and BENEFITS

  • Specified for VDD of 3 V to 5.5 V
  • Read-Only Operation
  • AD7854–200 kSPS; AD7854L–100 kSPS
  • System and Self-Calibration
  • Flexible Parallel Interface
    12-Bit Parallel/8-Bit Parallel (AD7854)
  • 28-Lead DIP, SOIC and SSOP Packages (AD7854)
  • Low Power:
    - Normal Operation
    AD7854: 15 mW (VDD = 3 V)
    AD7854L: 5.5 mW (VDD = 3 V)
    - Automatic Power-Down After
    Conversion (25 µW)
    AD7854: 1.3 mW 10 kSPS
    AD7854L: 650 µW 10 kSPS

Functional Block Diagram for AD7854

Documentation

Title Content Type File Type
AD7854: 3 V to 5 V Single Supply, 200 kSPS 12-Bit Sampling ADCs Data Sheet  (Rev B, 03/2000) (pdf, 264 kB) Data Sheets PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Space Qualified Parts List  (pdf, 93 kB)
This document lists 67 (240+) space level products that are available from Analog Devices. Many of the products listed are state-of-the-art data conversion and signal processing products that were previously only available as commercial or military Class B products. Through our Space Products Group and MIL-PRF-38535 certified Level V (Class S) facility, we are pleased to offer these products to the space marketplace.
Aerospace Information PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

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.

SampleSample & Buy

Price, packaging, availability

AD7854 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD7854AQ Status: Production CERDIP GLASS SEAL 28 Ind Tube, 12 $13.80 $11.73 N  Material Info PCN Purchase
AD7854AR Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $12.86 $10.93 N  Material Info PCN Purchase
AD7854ARS Status: Production 28 ld SSOP 28 Ind Tube, 47 $13.50 $11.48 N  Material Info PCN Purchase
AD7854ARS-REEL Status: Last Time Buy 28 ld SSOP 28 Ind Reel, 1500 - $11.48 N  Material Info PCN/PDN Purchase
AD7854ARSZ Status: Production SSOP 5.3 MM 28 Ind Tube, 47 $11.13 $9.46 Y  Material Info PCN Purchase
AD7854ARZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $11.13 $9.46 Y  Material Info PCN Purchase
AD7854ARZ-REEL Status: Production 28 ld SOIC - Wide 28 Ind Reel, 1000 - $9.46 Y  Material Info PCN Purchase
AD7854LAQ Status: Obsolete CERDIP GLASS SEAL 28 Ind Tube, 12 - - N  Material Info Notify Me Contact ADI
AD7854LARSZ Status: Production 28 ld SSOP 28 Ind Tube, 47 $7.08 $6.02 Y  Material Info PCN Purchase
AD7854LARSZ-REEL Status: Production 28 ld SSOP 28 Ind Reel, 1500 - $6.02 Y  Material Info PCN Purchase
AD7854LARZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $7.43 $6.32 Y  Material Info PCN Purchase
AD7854LARZ-REEL Status: Last Time Buy 28 ld SOIC - Wide 28 Ind Reel, 1000 - $6.32 Y  Material Info PCN/PDN 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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