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AD7824:  High Speed, 4-Channel, 8-Bit CMOS ADC

Product Details


The AD7824 and AD7828 are high-speed, multichannel, 8-bit ADCs with a choice of 4 (AD7824) or 8 (AD7828) multiplexed analog inputs. A half-flash conversion technique gives a fast conversion rate of 2.5 µs per channel and the parts have a built-in track/hold function capable of digitizing full-scale signals of 10 kHz (157 mV/µs slew rate) on all channels. The AD7824 and AD7828 operate from a single +5 V supply and have an analog input range of 0 V to +5 V, using an external +5 V reference.

Microprocessor interfacing of the parts is simple, using standard Chip Select (CS) and Read (RD) signals to initiate the conversion and read the data from the three-state data outputs. The half-flash conversion technique means that there is no need to generate a clock signal for the ADC. The AD7824 and AD7828 can be interfaced easily to most popular microprocessors.

The AD7824 and AD7828 are fabricated in an advanced, all ion-implanted, Linear-Compatible CMOS process (LC2MOS) and have low power dissipation of 40 mW (typ). The AD7824 is available in a 0.3" wide, 24-pin "skinny" DIP, while the AD7828 is available in a 0.6" wide, 28-pin DIP and in 28- terminal surface mount packages.

FEATURES and BENEFITS

  • 4 or 8 Analog Input Channels
  • Built-In Track-and-Hold Function
  • 10 kHz Signal Handling on Each Channel
  • Fast Microprocessor Interface
  • Single 5 V Supply
  • Low Power: 50 mW
  • Fast Conversion Rate: 2.5 µs/Channel
  • Tight Error Specification: 1/2 LSB

Functional Block Diagram for AD7824

Documentation

Title Content Type File Type
AD7824/AD7828: LC2MOS High Speed 4- & 8-Channel 8-Bit ADCs Data Sheet (Rev F, 01/2003) (pdf, 270 kB) Data Sheets PDF
AN-215: Designer's Guide to Flash-ADC Testing, Part 1, 2 & 3  (pdf, 1596 kB)
Flash ADCs Provide the Basis for High Speed Conversion.
Application Notes PDF
AN-299: Simple Circuit Provides Ratiometric Reference Levels for AD782X Family of Half-Flash ADCs  (pdf, 170 kB) Application Notes 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

AD7824 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
5962-8876401LX Status: Production CERDIP GLASS SEAL 24 Mil Tube, 15 $76.31 $61.85 N  Material Info PCN Purchase
5962-8876402LX Status: Production CERDIP GLASS SEAL 24 Mil Tube, 15 $96.07 $77.89 N  Material Info PCN Purchase
AD7824BCHIPS Status: Last Time Buy CHIPS OR DIE 0 Comm. Tray, 121 - - Y  Material Info PCN/PDN Contact ADI
AD7824BQ Status: Production CERDIP GLASS SEAL 24 Ind Tube, 15 $24.52 $22.06 N  Material Info PCN Purchase
AD7824CQ Status: Production CERDIP GLASS SEAL 24 Ind Tube, 15 $31.75 $28.58 N  Material Info PCN Purchase
AD7824KN Status: Production 24 ld PDIP 24 Comm. Tube, 15 $15.08 $12.85 N  Material Info PCN Purchase
AD7824KNZ Status: Production 24 ld PDIP 24 Comm. Tube, 15 $13.09 $11.15 Y  Material Info PCN Purchase
AD7824KR Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $13.94 $11.89 N  Material Info PCN Purchase
AD7824KR-REEL Status: Production 24 ld SOIC - Wide 24 Comm. Reel, 1000 - $11.89 N  Material Info PCN Purchase
AD7824KRZ Status: Production 24 ld SOIC - Wide 24 Comm. Tube, 31 $12.10 $10.31 Y  Material Info PCN Purchase
AD7824KRZ-REEL Status: Production 24 ld SOIC - Wide 24 Comm. Reel, 1000 - $10.31 Y  Material Info PCN Purchase
AD7824UQ Status: Production CERDIP GLASS SEAL 24 Mil Tube, 15 $76.24 $64.80 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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