AD674BAD

更新时间： 2024-11-20 22:38:59

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器信息通信管理
页数	文件大小	规格书
12页	244K
描述
Complete 12-Bit A/D Converters

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AD674BAD 数据手册

Complete 12-Bit

A/D Converters

AD674B^*/AD774B^*

FEATURES

FUNCTIONAL BLOCK DIAGRAM

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 ꢁs (Max) Conversion Time (AD774B)

15 ꢁs (Max) Conversion Time (AD674B)

ꢂ5 V, ꢂ10 V, 0 V–10 V, 0 V–20 V Input Ranges

Commercial, Industrial, and Military Temperature

Range Grades

5V SUPPLY

STATUS

STS

LOGIC

DATA MODE SELECT

12/8

MSB

DB11 (MSB)

DB10

DB9

CHIP SELECT

CONTROL

BYTE ADDRESS/

SHORT CYCLE A

READ/CONVERT R/C

DB8

CLOCK

SAR

COMP

CHIP ENABLE

DB7

–

12V/15V SUPPLY

DB6

DIGITAL

DATA

OUTPUTS

10V

I DAC

10V REFERENCE

REF

DB5

REF OUT

MIL-STD-883-Compliant Versions Available

ANALOG COMMON

DB4

REFERENCE INPUT

DB3

REF IN

I REF

–12V/–15V SUPPLY

199.95

kꢀ

–

DB2

BIPOLAR OFFSET

DB1

BIPOFF

DAC

10V SPAN INPUT

V_EE

DB0 (LSB)

10V

LSB

20V SPAN INPUT

DIGITAL

COMMON DC

VOLTAGE

DIVIDER

20V

AD674B/AD774B

PRODUCT DESCRIPTION

PRODUCT HIGHLIGHTS

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.

1. Industry Standard Pinout: The AD674B and AD774B use

the pinout established by the industry standard AD574A.

2. Analog Operation: The precision, laser-trimmed scaling and

bipolar offset resistors provide four calibrated ranges: 0 V to

10 V and 0 V to 20 V unipolar; –5 V to +5 V and –10 V to

+10 V bipolar. The AD674B and AD774B operate on +5 V

and 12 V or 15 V power supplies.

The AD674B and AD774B are pin-compatible with the indus-

try standard AD574A, but offer faster conversion time and bus-

access speed than the AD574A and lower power consumption.

The AD674B converts in 15 µs (maximum) and the AD774B

converts in 8 µs (maximum).

3. Flexible Digital Interface: On-chip multiple-mode three-state

output buffers and interface logic allow direct connection to

most microprocessors. The 12 bits of output data can be

read either as one 12-bit word or as two 8-bit bytes (one with

8 data bits, the other with 4 data bits and 4 trailing zeros).

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

laser trimming of thin-film resistors.

4. The internal reference is trimmed to 10.00 V with 1% maxi-

mum error and 10 ppm/°C typical temperature coefficient.

The reference is available externally and can drive up to

2.0 mA beyond the requirements of the converter and bipo-

lar offset resistors.

Five different grades are available. The J and K grades are

specified for operation over the 0°C to 70°C temperature range.

The A and B grades are specified from –40°C to +85°C, the T grade

is specified from –55°C to +125°C. The J and K grades are

available in a 28-lead plastic DIP or 28-lead SOIC. All other grades

are available in a 28-lead hermetically sealed ceramic DIP.

5. The AD674B and AD774B are available in versions compli-

ant with MIL-STD-883. Refer to the Analog Devices Mili-

tary Products Databook or current AD674B/AD774B/883B

data sheet for detailed specifications.

*Protected by U.S. Patent Nos. 4,250,445; 4,808,908; RE30586.

REV. C

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

www.analog.com

12 3 4 5 6 7...12

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AD674BAD 替代型号

型号	品牌	替代类型	描述	数据表
HI1-674AKD-5	INTERSIL	功能相似	Complete, 12-Bit A/D Converters with Microprocessor Interface
HI1-574AKD-5	INTERSIL	功能相似	Complete, 12-Bit A/D Converters with Microprocessor Interface
HI1-574AJD-5	INTERSIL	功能相似	Complete, 12-Bit A/D Converters with Microprocessor Interface

与AD674BAD相关器件

型号	品牌	获取价格	描述	数据表
AD674BAR	ADI	获取价格	Complete 12-Bit A/D Converters
AD674BARZ	ADI	获取价格	Complete 12-Bit A/D Converters
AD674BBD	ADI	获取价格	Complete 12-Bit A/D Converters
AD674BBR	ADI	获取价格	Complete 12-Bit A/D Converters
AD674BBRZ	ADI	获取价格	暂无描述
AD674BJN	ADI	获取价格	Complete 12-Bit A/D Converters
AD674BJNZ	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Parallel, Word Access, BICMOS, P
AD674BJR	ADI	获取价格	Complete 12-Bit A/D Converters
AD674BKN	ADI	获取价格	Complete 12-Bit A/D Converters
AD674BKNZ	ADI	获取价格	暂无描述

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