FUNCTIONAL DIAGRAM

Complete µP Compatible 12-Bit D AC

H S9338

D ata Converter Line

FEATURES

• Output ranges: 0 to +10V, ±10V .

• Coding: binary; offset binary

• Linearity: ±0.01%

• Settling time: 2.5 µS

• µP compatible

• 28-pin package

• CM OS, TTL compatible

• Double buffered inputs

DESCRIPTION

HS9338 is a µP-compatible, complete 12-bit double

buffered digital-to-analog converter. To enhance

application flexibility, the data input registers have

been configured as 3 independent 4-bit bytes. This

enables the user to directly interface to 4, 8, and

12-bit data buses. HS9338 comes complete with

interface control logic. The three separate byte

enable inputs latch data from the bus into the

appropriate primary data latches. The LDA C input

transfers data from the primary latches to the DA C

register. In addition to these input functions are two

chip select inputs and a read/write input allowing

direct memory-map configurations. A ll input con-

trols are static to allow hardwired configurations.

M SB

16

17

18

19

20

21

22

23

24

25

26

27

12

10

DA TA INPUTS

M IDDLE BY TE

INPUT REG

HIGH BY TE

INPUT REG

LOW BY TE

INPUT REG

LSB

SUM

JCT

5V

RA NGE

CONTROL

LOGIC

CS

4

CS

3

W R

2

HBE

6

M BE

5

LBE

7

LDA C

1

DA C REGISTER

12-BIT M DA C

REFERENCE

–

+

–

+

11

V OUT

10

BIPOLA R

10

GA IN

8

GND

9

+15V

15

– 15V

28

+5V

HS 9338

165Cedar Hill Street,Marlborough,MA01752 Tel:508.485.6350 Fax: 508.485.5168

www.SpectrumMicrowave.com