1

LTC1663

10-Bit Rail-to-Rail

Micropower DAC with 2-Wire Interface

The LTC

buffered rail-to-rail output voltage capability. It operates

from a single supply with a range of 2.7V to 5.5V. The

reference for the DAC is selectable between the supply

voltage or an internal bandgap reference. Selecting the

internal bandgap reference will set the full-scale output

voltage range to 2.5V. Selecting the supply as the refer-

ence sets the output voltage range to the supply voltage.

The part features a simple 2-wire serial interface compat-

between many devices. The internal data registers are

double buffered to allow for simultaneous update of

several devices at once. The DAC can be put in low current

power-down mode for use in power conscious systems.

Power-on reset ensures the DAC output is at 0V when

power is initially applied, and all internal registers are

cleared.

s

Micropower 10-Bit DAC in SOT-23

s

Low Operating Current: 60

µA

s

Ultralow Power Shutdown Mode: 10

µA

s

2-Wire Serial Interface Compatible

TM

s

Single 2.7V to 5.5V Operation

s

s

Buffered True Rail-to-Rail Voltage Output

s

Maximum DNL Error: 0.75LSB

s

Power-On Reset

s

8 User Selectable Addresses (MSOP Package)

s

s

Small 5-Lead SOT-23 and 8-Lead MSOP Packages

s

Digital Calibration

s

Offset/Gain Adjustment

s

Industrial Process Control

s

Automatic Test Equipment

s

Arbitrary Function Generators

s

Battery-Powered Data Conversion Products

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

10-BIT

DAC LATCH

INPUT

LATCH

2-WIRE INTERFACE

SDA

AD0

(6)

MSOP

PACKAGE

ONLY

(2)

(3)

AD1

AD2

SCL

1 (1)

5 (4)

GND

R

R

2 (7)

1663 BD

1.25V

4 (5)

BANDGAP

REFERENCE

REFERENCE

SELECT

–

+

COMMAND

LATCH

NOTE: PIN NUMBERS IN PARENTHESES REFER TO THE MSOP PACKAGE

Differential Nonlinearity (DNL)

CODE

0

–1.0

– 0.8

– 0.4

– 0.2

0

1.0

0.4

156

512

640

1663 G02

– 0.6

0.6

0.8

0.2

28

384

768 896 1024

APPLICATIO S

FEATURES

DESCRIPTIO

BLOCK DIAGRA