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AD7874:  4-channel Simultaneous Sampling, 12-Bit Data Acquisition System

Product Details


The AD7874 is a four-channel simultaneous sampling, 12-bit data acquisition system. The part contains a high speed 12-bit ADC, on chip reference, on-chip clock and four track/hold amplifiers. This latter feature allows the four input channels to be sampled simultaneously, thus preserving the relative phase information of the four input channels, which is not possible if all four channels share a single track/hold amplifier. This makes the AD7874 ideal for applications such as phased-array sonar and ac motor controllers where the relative phase information is important.

The aperture delay of the four track/hold amplifiers is small and specified with minimum and maximum limits. This allows several AD7874s to sample multiple input channels simultaneously without incurring phase errors between signals connected to several devices. A reference output/reference input facility also allows several AD7874s to be driven from the same reference source.

In addition to the traditional dc accuracy specifications such as linearity, full-scale and offset errors, the AD7874 is also fully specified for dynamic performance parameters including distortion and signal-to-noise ratio.

The AD7874 is fabricated in Analog Devices' Linear Compatible CMOWS (LC2MOS) process, a mixed technology process that combines precision bipolar circuits with low-power CMOS logic. The part is available in a 28-pin, 0.6" wide, plastic or hermetic dual-in-line package (DIP), in a 28-terminal leadless ceramic chip carrier (LCCC) and in a 28-pin SOIC.

FEATURES and BENEFITS

  • Four On-Chip Track/Hold Amplifiers
  • Simultaneous Sampling of 4 Channels
  • Fast 12-Bit ADC with 8 µs Conversion Time/Channel
  • 29 kHz Sample Rate for All Four Channels
  • On-Chip Reference
  • ±10 V Input Range
  • ±5 V Supplies

Functional Block Diagram for AD7874

Documentation

Title Content Type File Type
AD7874: 4-Channel Simultaneous Sampling, 12-Bit Data Acquisition System Data Sheet  (Rev C, 05/1991) (pdf, 414 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.

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Price, packaging, availability

AD7874 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
5962-9152101M3A Status: Production LCC:CER LEADLESS CHIP CARR 28 Mil Tube, 42 $255.00 $230.50 N  Material Info PCN Purchase
5962-9152101MXA Status: Production CERDIP GLASS SEAL 28 Mil Tube, 12 $197.87 $178.87 N  Material Info PCN Purchase
AD7874ACHIPS Status: Production CHIPS OR DIE 0 Comm. Tray, 35 $37.72 $37.72 Y  Material Info PCN Contact ADI
AD7874AN Status: Production 28 ld PDIP 28 Ind Tube, 13 $49.25 $44.53 N  Material Info PCN Purchase
AD7874ANZ Status: Production 28 ld PDIP 28 Ind Tube, 13 $44.87 $40.56 Y  Material Info PCN Purchase
AD7874AQ Status: Production CERDIP GLASS SEAL 28 Ind Tube, 12 $63.92 $54.33 N  Material Info PCN Purchase
AD7874AR Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $45.54 $41.18 N  Material Info PCN Purchase
AD7874AR-REEL7 Status: Production 28 ld SOIC - Wide 28 Ind Reel, 400 - $41.18 N  Material Info PCN Purchase
AD7874ARZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $41.48 $37.50 Y  Material Info PCN Purchase
AD7874ARZ-REEL Status: Production 28 ld SOIC - Wide 28 Ind Reel, 1000 - $37.50 Y  Material Info PCN Purchase
AD7874ARZ-REEL7 Status: Production 28 ld SOIC - Wide 28 Ind Reel, 400 - $37.50 Y  Material Info PCN Purchase
AD7874BN Status: Production 28 ld PDIP 28 Ind Tube, 13 $61.57 $55.66 N  Material Info PCN Purchase
AD7874BNZ Status: Production 28 ld PDIP 28 Ind Tube, 13 $56.09 $50.70 Y  Material Info PCN Purchase
AD7874BQ Status: Production CERDIP GLASS SEAL 28 Ind Tube, 12 $78.97 $67.12 N  Material Info PCN Purchase
AD7874BRZ Status: Production 28 ld SOIC - Wide 28 Comm. Tube, 27 $51.87 $46.89 Y  Material Info PCN Purchase
AD7874BRZ-REEL Status: Last Time Buy 28 ld SOIC - Wide 28 Comm. Reel, 1000 - $46.89 Y  Material Info PCN/PDN Purchase
AD7874SE Status: Production LCC:CER LEADLESS CHIP CARR 28 Mil Tube, 42 $217.55 $184.92 N  Material Info PCN Purchase
AD7874SQ Status: Production CERDIP GLASS SEAL 28 Mil Tube, 12 $169.23 $143.84 N  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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