-

+

-

+

-

+

-

+

VOUT0

VOUT1

VOUT2

VOUT3

VOUT4

VOUT5

VOUT6

VOUT7

LE

DQ

LEA7

LE

DQ

7A

7B

LE

DQ

LEA6

LE

DQ

6A

6B

LE

D

Q

LEA5

LE

D

Q

5A

5B

LE

DQ

LEA4

LE

DQ

4A

4B

LE

DQ

LEA3

LE

DQ

3A

3B

LE

DQ

LEA2

LE

DQ

2A

2B

LE

DQ

LEA1

LE

DQ

1A

1B

LE

DQ

LEA0

LE

DQ

0A

0B

Control

Logic

WR

CS

A0–A2

LDAC

LEA0–LEA7

8

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

DAC0

DAC1

DAC2

DAC3

DAC4

DAC5

DAC6

DAC7

CLR

D0–D12

LDAC

LDAC

LDAC

LDAC

LDAC

LDAC

LDAC

LDAC

LDAC

SPT5420

13-BIT, OCTAL D/A CONVERTER

TECHNICAL DATA

JUNE 26, 2001

FEATURES

• 13-bit resolution

• Pin compatible with AD7839

• Eight DACs in one package

• Buffered voltage outputs

• 15 µs settling time to ±0.5 LSB

• Double-buffered digital inputs

• Microprocessor and TTL/CMOS compatible

APPLICATIONS

• Automatic test equipment

• Instrumentation

• Process control

GENERAL DESCRIPTION

The SPT5420 contains eight 13-bit digital-to-analog

CMOS converters designed primarily for automatic test

equipment applications. It uses novel circuit topology to

convert the 13-bit digital inputs into output voltages which

are proportionate to the applied reference voltages. Each

DAC’s full-scale output voltage and output voltage offset

The SPT5420 operates over an industrial temperature

range of –40 °C to +85 °C and is available in a 10 x 10 mm,

44-lead metric quad flat pack (MQFP) plastic package.

BLOCK DIAGRAM