LTC2757

1

2757f

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

with Parallel I/O

rent-output digital-to-analog converter that provides full 18-

bit performance—INL and DNL of ±1LSB maximum—over

temperature without any adjustments. 18-bit monotonicity

is guaranteed in all performance grades. This SoftSpan™

DAC operates from a single 3V to 5V supply and offers

six output ranges (up to ±10V) that can be programmed

through the parallel interface or pin-strapped for operation

in a single range.

In addition to its precision DC specifications, the LTC2757

also offers excellent AC specifications, including 2.1μs

The LTC2757 uses a bidirectional input/output parallel

interface that allows readback of any on-chip register,

including DAC output-range settings; and a CLR pin and

power-on reset circuit that each reset the DAC output to

0V regardless of output range.

18-Bit Voltage Output DAC with Software-Selectable Ranges

0V to 5V, 0V to 10V, –2.5V to 7.5V, ±2.5V, ±5V, ±10V

Output Range

× 7mm LQFP Package

LTC2757 Integral Nonlinearity

L, LT, LTC, LTM, Linear Technology and the Linear logo 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.

150pF

+

–

LT1012

LT1468

18-BIT DAC WITH SPAN SELECT

LTC2757

REF

5V

5V

REF

GND

WR

UPD

READ

D/S

CLR

M-SPAN

SPAN I/O

S2-S0

GAIN

ADJUST

27pF

2757 TA01

WR

UPD

READ

D/S

CLR

0.1μF

DATA I/O

D17-D0

OFFSET

ADJUST

CODE

0

65536

–1.0

–0.8

–0.6

–0.4

–0.2

0.6

0.4

0.2

0

0.8

1.0

131072

196608

262143

2757 TA01b

±10V RANGE

90°C

25°C

–45°C