LTC2751

1

2751f

C2

150pF

–

+

1/2 LT1469

16-BIT DAC WITH SPAN SELECT

LTC2751-16

1

2

R2

R1

38

37

REF

5V

5V

REF

36

35

GND

WR

UPD

READ

D/S

CLR

MSPAN

4

16

31

30

29

28

17

18

3, 32, 33

SPAN I/O

S2-S0

C1

15pF

15

2751 TA01

WR

UPD

READ

D/S

CLR

C3

0.1μF

3

6-14, 19-25

34

DATA I/O

D15-D0

16

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Current Output

DACs with Parallel I/O

plying parallel-input, current-output DACs. They operate

from a single 2.7V to 5.5V supply. All parts are guaranteed

monotonic over temperature. The LTC2751A-16 provides

16-bit performance (±1LSB INL and DNL) over temperature

without any adjustments. These SoftSpan™ DACs offer six

output ranges—two unipolar and four bipolar—that can be

programmed through the parallel interface, or pinstrapped

for operation in a single range.

These parts use a bidirectional input/output parallel

interface that allows readback of any on-chip register. A

power-on circuit resets the DAC output to 0V when power is

initially applied. A logic low on the ⎯C⎯L⎯R pin asynchronously

clears the DAC to 0V in any output range.

The parts are specified over commercial and industrial

temperature ranges.

16-Bit DAC with Software Selectable Ranges

■

Six Programmable Output Ranges

Unipolar: 0V to 5V, 0V to 10V

Bipolar: ±5V, ±10V, ±2.5V, –2.5V to 7.5V

■

Maximum 16-Bit INL Error: ±1 LSB over Temperature

■

Low 1µA (Maximum) Supply Current

■

Guaranteed Monotonic over Temperature

■

■

2.7V to 5.5V Single Supply Operation

■

2µs Settling Time to ±1 LSB

■

Reference Input: ±15V

■

Parallel Interface with Readback of All Registers

■

Asynchronous ⎯C⎯L⎯R Pin Clears DAC Output to 0V in

Any Output Range

■

Power-On Reset to 0V

■

38-Pin 5mm × 7mm QFN Package

■

High Resolution Offset and Gain Adjustment

■

Process Control and Industrial Automation

■

Automatic Test Equipment

■

Data Acquisition Systems

LTC2751-16 Integral Nonlinearity

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

SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

CODE

0

–1.0

– 0.8

–0.4

–0.2

0.0

1.0

0.4

16384

32768

–0.6

0.6

0.8

0.2

49152

65535

2751 TA01b

25°C

90°C

–45°C

±10V RANGE