LTC1659
12-Bit Rail-to-Rail
Micropower DAC in
MSOP Package
DESCRIPTION
The LTC
廬
1659 is a single supply, rail-to-rail voltage out-
put, 12-bit digital-to-analog converter (DAC) in an MSOP
package. It includes a rail-to-rail output buffer amplifier
and an easy-to-use 3-wire cascadable serial interface.
The LTC1659 output swings from 0V to REF. The REF input
can be tied to V
CC
which can range from 2.7V to 5.5V. This
allows a rail-to-rail output swing from 0V to V
CC
. The
LTC1659 draws only 250碌A(chǔ) from a 5V supply.
Its guaranteed
鹵0.5LSB
maximum DNL makes the LTC1659
excel in calibration, control and trim/adjust applications.
The low power supply current and the small MSOP pack-
age make the LTC1659 ideal for battery-powered applica-
tions.
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
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8-Lead MSOP Package
12-Bit Resolution
Supply Operation: 3V to 5V
Buffered True Rail-to-Rail Voltage Output
Output Swings from 0V to V
REF
V
REF
Can Tie to V
CC
Schmitt Trigger On Clock Input Allows Direct
Optocoupler Interface
Power-On Reset Clears DAC to 0V
3-Wire Cascadable Serial Interface
Maximum DNL Error: 0.5LSB
Low Cost
APPLICATIONS
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Digital Calibration
Industrial Process Control
Automatic Test Equipment
Cellular Telephones
TYPICAL APPLICATION
Functional Block Diagram: 12-Bit Rail-to-Rail DAC
2.7V TO 5.5V
8
V
CC
2 D
IN
1 CLK
碌P
3 CS/LD
12-BIT
SHIFT
REG
AND
DAC
LATCH
6
REF
0.5
+
12-BIT
DAC
V
OUT
7
鈥?/div>
DNL ERROR (LSB)
RAIL-TO-RAIL
VOLTAGE
OUTPUT
4 D
OUT
TO
OTHER
DACS
POWER-ON
RESET
GND
5
1659 TA01
U
U
U
Differential Nonlinearity
vs Input Code
0
鈥?.5
0
512 1024 1536 2048 2560 3072 3584 4095
CODE
1659 TA02
1
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