1

®

December 1997

HI-7151

10-Bit, High Speed, A/D Converter

with Track and Hold

Features

• Conversion Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

µs

• Continuous Throughput Rate . . . . . . . . . . . . . . . 100kHz

• No Offset or Gain Adjustments Necessary

• Internal Track and Hold Amplifier

• Analog and Reference Inputs Fully Buffered

•

µP Compatible Byte Organized Outputs

• Low Power Consumption . . . . . . . . . . . . . . . . . . 150mW

• Uses a Single 2.5V Reference for

±2.5 V Input Range

Applications

•

µP Controlled Data Acquisition Systems

•DSP

- Avionics

- Sonar

• Process Control

- Automotive Transducer Sensing

- Industrial

• Robotics

• Digital Communications

• Image Processing

Description

The Intersil HI-7151 is a high speed 10-bit A/D converter

which uses a 2-Step Flash algorithm to achieve throughput

rates of 100kHz. A unique switched capacitor technique

allows a new input voltage to be sampled while a conversion

is taking place.

A Track and Hold amplifier is included on the chip, consisting

of two high speed amplifiers and an internal hold capacitor.

Microprocessor bus interfacing is simplified by the use of

standard Chip Select, Read, and Write control signals. The

digital three-state outputs are byte organized for interfacing

the either 8- or 16-bit systems. An Over-Range pin, together

with the MSB, can be used to indicate an out-of-range

condition.

The HI-7151 operates with

±5V supplies. A single +2.5V

reference is required to provide a bipolar input range from

-2.5V to +2.5V.

Internal high speed CMOS buffers at both the analog and

reference inputs simplify external drive requirements.

Pinout

HI-7151

(PDIP, CERDIP)

TOP VIEW

Ordering Information

PART

NUMBER

LINEARITY

(MAX. DLE)

TEMP.

PACKAGE

HI3-7151J-5

±1 LSB

0 to 75

28 Ld PDIP

HI3-7151K-5

0 to 75

28 Ld PDIP

HI3-7151A-9

±1 LSB

0 to 85

28 Ld PDIP

HI3-7151B-9

0 to 85

28 Ld PDIP

HI1-7151S-2

±1 LSB

-55 to 125

28 Ld CERDIP

HI1-7151T-2

-55 to 125

28 Ld CERDIP

GND

V-

AG

SET

BUSY

CLK

HOLD

WR

CS

RD

SMODE

DG

V+

D9

D8

D7

D6

D4

D2

D1

D0

HBE

BUS

OVR

D5

D3

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

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

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2002. All Rights Reserved

File Number

3099.1

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