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AD774B:  Complete 12-Bit Successive Approximation Analog-to-Digital Converters With Three-State Output and 8 us Conversion

Product Details


The AD674B and AD774B are complete 12-bit successive approximation analog-to-digital converters with three-state output buffer circuitry for direct interface to 8- and 16-bit microprocessor busses. A high precision voltage reference and clock are included on chip, and the circuit requires only power supplies and control signals for operation.

The AD674B and AD774B are pin compatible with the industry standard AD574A, but offer faster conversion time and access speed than the AD574A and lower power consumption. The AD674B converts in 15 µs (maximum) and the AD774B converts in 8 µs (maximum).

The monolithic design is implemented using Analog Devices' BiMOS II process allowing high performance bipolar analog circuitry to be combined on the same die with digital CMOS logic. Offset linearity and scaling errors are minimized by active trimming of thin-film resistors.

Five different grades are available. The J and K grades are specified for operation over the 0°C to +70°C temperature range. A and B grades are specified from -40°C to +85°C, the T is specified from -55°C to +125°C. The J and K grades are available in a 28-pin plastic DIP or 28-lead SOIC. All other grades are available in a 28-pin hermetically sealed ceramic DIP.

FEATURES and BENEFITS

  • Complete Monolithic 12-Bit A/D Converters with Reference, Clock, and Three-State Output Buffers
  • Industry Standard Pinout
  • High Speed Upgrades for AD574A
  • 8- and 16-Bit Microprocessor Interface
  • 8 µs (Max) Conversion Time (AD774B)
  • 15 µs (Max) Conversion Time (AD674B)
  • ±5 V, ±10 V, 0 V–10 V, 0 V–20 V Input Ranges
  • Commercial, Industrial, and Military Temperature Range Grades
  • MIL-STD-883-Compliant Versions Available

Functional Block Diagram for AD774B

Documentation

Title Content Type File Type
AD674B/AD774B: Complete 12-Bit A/D Converters Data Sheet  (Rev C, 10/2010) (pdf, 247 kB) Data Sheets PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Delta-Sigma Rocks RF, As ADC Designers Jump On Jitter
(Electronic Design, 1/12/06)
Technical Articles HTML
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

AD774B Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD774BAR Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $33.19 $33.19 N  Material Info PCN Purchase
AD774BARZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $28.74 $28.74 Y  Material Info PCN Purchase
AD774BBD Status: Production S/B OR B/B CERAMIC DIP 28 Ind Tube, 13 $54.63 $54.63 N  Material Info PCN Purchase
AD774BBRZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $46.55 $46.55 Y  Material Info PCN Purchase
AD774BJN Status: Production 28 ld PDIP 28 Comm. Tube, 13 $34.11 $25.41 N  Material Info PCN Purchase
AD774BJNZ Status: Production 28 ld PDIP 28 Comm. Tube, 13 $28.13 $20.96 Y  Material Info PCN Purchase
AD774BKN Status: Production 28 ld PDIP 28 Ind Tube, 13 $44.99 $34.31 N  Material Info PCN Purchase
AD774BKNZ Status: Production 28 ld PDIP 28 Ind Tube, 13 $37.11 $28.30 Y  Material Info PCN Purchase
AD774BTD Status: Production S/B OR B/B CERAMIC DIP 28 Mil Tube, 13 $145.61 $145.61 N  Material Info PCN Purchase
AD774BTD/883B Status: Production S/B OR B/B CERAMIC DIP 28 Mil Tube, 13 $190.89 $171.92 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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