LTC1453_15 Datasheet, PDF (1/12 Pages) Linear Technology – 12-Bit Rail-to-Rail Micropower DACs in SO-8

LTC1451
LTC1452/LTC1453
12-Bit Rail-to-Rail
Micropower DACs in SO-8
FEATURES
s _{12-Bit Resolution}
s _{Buffered True Rail-to-Rail Voltage Output}
s _{3V Operation (LTC1453), ICC: 250µA Typ}
s _{5V Operation (LTC1451), ICC: 400µA Typ}
s _{3V to 5V Operation (LTC1452), ICC: 225µA Typ}
s _{Built-In Reference: 2.048V (LTC1451)}
1.220V (LTC1453)
s _{Multiplying Version (LTC1452)}
s _{Power-On Reset}
s _{SO-8 Package}
s _{3-Wire Cascadable Serial Interface}
s _{Maximum DNL Error: 0.5LSB}
s _{Schmitt Trigger on Clock Input Allows Direct}
Optocoupler Interface
U
APPLICATIO S
s _{Digital Calibration}
s _{Industrial Process Control}
s _{Automatic Test Equipment}
s _{Cellular Telephones}
DESCRIPTIO
The LTC^®1451/LTC1452/LTC1453 are complete single
supply, rail-to-rail voltage output 12-bit digital-to-analog
converters (DACs) in an SO-8 package. They include an
output buffer amplifier and an easy-to-use 3-wire
cascadable serial interface.
The LTC1451 has an onboard reference of 2.048V and a
full-scale output of 4.095V. It operates from a single 4.5V
to 5.5V supply.
The LTC1452 is a multiplying DAC with a full-scale output
of twice the reference input voltage. It operates from a
single supply of 2.7V to 5.5V.
The LTC1453 has an onboard 1.22V reference and a full-
scale output of 2.5V. It operates from a single supply of
2.7V to 5.5V.
The low power supply current makes the LTC1451 family
ideal for battery-powered applications. The space saving
8-pin SO package and operation with no external compo-
nents provide the smallest 12-bit DAC system available.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Daisy-Chained Control Outputs
5V
D_IN
V_CC
0.1µF
µP
CLK
LTC1451
CS/LD
V_OUT
CONTROL
OUTPUT 1
D_OUT V_REF GND
D_IN
V_CC
CLK
LTC1451
CS/LD
V_OUT
D_OUT V_REF GND
TO NEXT DAC
0.1µF
CONTROL
OUTPUT 2
1451/2/3 TA01
Differential Nonlinearity
vs Input Code
0.5
0.0
–0.5
0 512 1024 1536 2048 2560 3072 3584 4095
CODE
1451/2/3 TA02
sn145123 145123fas
1