Datasheet > HI-7159A

HI-7159A

更新时间： 2024-09-23 22:51:19

品牌	Logo	应用领域
英特矽尔 - INTERSIL		转换器微处理器
页数	文件大小	规格书
14页	212K
描述
Microprocessor-Compatible, 5-1/2 Digit A/D Converter

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HI-7159A 数据手册

HI-7159A

Data Sheet

January 1999

File Number 2936.4

Microprocessor-Compatible, 5- / Digit

Features

A/D Converter

• ±200,000 Count A/D Converter

The Intersil HI-7159A is a monolithic A/D converter that uses

a unique dual slope technique which allows it to resolve input

changes as small as 1 part in 200,000 (10µV) without the use

of critical external components. Its digital autozeroing feature

virtually eliminates zero drift over temperature. The device is

fabricated in Intersil’ proprietary low noise BiMOS process,

resulting in exceptional linearity and noise performance. The

• 2V Full Scale Reading With 10µV Resolution

• 15 Conversions Per Second in 5 / Digit Mode

• 60 Conversions Per Second in 4 / Digit Mode

• Serial or Parallel Interface Modes

• Four Selectable Baud Rates

• Differential Analog Input

• Differential Reference Input

• Digital Autozero

HI-7159A’s resolution can be switched between a high

resolution 200,000 count (5 / digit) mode, and a high speed

20,000 count (4 / digit) mode without any hardware

modifications. In the 4 / digit uncompensated mode, speeds

of 60 conversions per second can be achieved. The HI-7159A

is designed to be easily interfaced with most microprocessors

through either of its three serial and one parallel interface

modes. In the serial modes, any one of four common baud

rates is available.

Applications

• Weigh Scales

• Part Counting Scales

• Laboratory Instruments

• Process Control/Monitoring

• Energy Management

• Seismic Monitoring

Ordering Information

TEMP.

PKG.

NO.

PART NUMBER RANGE ( C)

PACKAGE

28 Ld PDIP

HI3-7159A-5

0 to 70

E28.6

Pinout

Functional Block Diagram

HI-7159A

(PDIP)

TOP VIEW

GND

TAL

GND

BUS

28 SEL

INT OUT

INT IN

27 X

26 D

TAL

INTEGRATOR

CONTROL

SECTION

AND

COMPARATOR

INT

GND

8 BIT

BUS

25 P7/BRS1

24 P6/BRS0

23 P5/SAD3

22 P4/SAD2

21 P3/SAD1

BUF OUT

REF-

GUARD

LATCHES

INTERFACE

UNIT

INT

BUFFER

REF-

REF+

REF HI

GUARD

P2/SAD0

REF LO

REF

LO 10

19 P1/SMS1

18 P0/SMS0

17 CS/SAD4

16 WR/TXD

15 RD/RXD

IN HI

UART

REF

ANALOG

STATE

MACHINE

IN LO

GND

ANALOG SWITCHES

HI 12

LO 13

REF

SEL

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

12 3 4 5 6 7...14

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