1

LTC1591/LTC1597

14-Bit and 16-Bit Parallel

Low Glitch Multiplying DACs

with 4-Quadrant Resistors

The LTC

14-bit and 16-bit multiplying current output DACs that oper-

atefromasingle5Vsupply.INLandDNLareaccurateto1LSB

over the industrial temperature range in both 2- and 4-

quadrant multiplying modes. True 16-bit 4-quadrant multi-

plication is achieved with on-chip 4-quadrant multiplication

resistors.

These DACs include an internal deglitcher circuit that reduces

the glitch impulse to less than 2nV-s (typ). The asynchronous

CLR pin resets the LTC1591/LTC1597 to zero scale and

LTC1591-1/LTC1597-1 to midscale.

The LTC1591/LTC1597 are available in 28-pin SSOP and

PDIP packages and are specified over the industrial tempera-

ture range.

For serial interface 16-bit current output DACs refer to the

LTC1595/LTC1596 data sheet.

s

Process Control and Industrial Automation

s

Direct Digital Waveform Generation

s

Software-Controlled Gain Adjustment

s

Automatic Test Equipment

s

True 16-Bit Performance Over Industrial

Temperature Range

s

DNL and INL: 1LSB Max

s

On-Chip 4-Quadrant Resistors Allow Precise 0V to

10V, 0V to – 10V or

s

Pin Compatible 14- and 16-Bit Parts

s

Asynchronous Clear Pin

LTC1591/LTC1597: Reset to Zero Scale

LTC1591-1/LTC1597-1: Reset to Midscale

s

Glitch Impulse < 2nV-s

s

28-Lead SSOP Package

s

Low Power Consumption: 10

µW Typ

s

Power-On Reset

FEATURES

, LTC and LT are registered trademarks of Linear Technology Corporation.

LTC1591/LTC1591-1 Integral Nonlinearity

LTC1597/LTC1597-1 Integral Nonlinearity

DIGITAL INPUT CODE

0

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

16384

32768

1591/97 TA03

49152

65535

DIGITAL INPUT CODE

0

1.0

0.8

0.6

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1.0

4096

8192

1591/97 TA02

12288

16383

16-Bit, 4-Quadrant Multiplying DAC with a

Minimum of External Components

LTC1597-1

5V

LD

LD

32

98

28

23

15pF

7

22

R1

1

REF

4

5

0.1

µF

6

15pF

1591/97 TA01

AGND

DGND

LT

WR

10 TO 21,

24 TO 27

WR

CLR

CLR

LT1468

16-BIT DAC

R1

R2

16

DATA

INPUTS