LTC1659 Datasheet, PDF (1/12 Pages) Linear Technology – 12-Bit Rail-to-Rail Micropower DAC in MSOP Package

FEATURES
s _{8-Lead MSOP Package}
s _{12-Bit Resolution}
s _{Supply Operation: 3V to 5V}
s _{Buffered True Rail-to-Rail Voltage Output}
s _{Output Swings from 0V to VREF}
s _{VREF Can Tie to VCC}
s _{Schmitt Trigger On Clock Input Allows Direct}
Optocoupler Interface
s _{Power-On Reset Clears DAC to 0V}
s _{3-Wire Cascadable Serial Interface}
s _{Maximum DNL Error: 0.5LSB}
s _{Low Cost}
U
APPLICATIONS
s _{Digital Calibration}
s _{Industrial Process Control}
s _{Automatic Test Equipment}
s _{Cellular Telephones}
LTC1659
12-Bit Rail-to-Rail
Micropower DAC in
MSOP Package
DESCRIPTION
The LTC^®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 250µA from a 5V supply.
Its guaranteed ±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.
TYPICAL APPLICATION
µP
TO
OTHER
DACS
Functional Block Diagram: 12-Bit Rail-to-Rail DAC
2.7V TO 5.5V
8
V_CC
2 D_IN
1 CLK
3 CS/LD
4 D_OUT
12-BIT
SHIFT
REG
AND
DAC
LATCH
POWER-ON
RESET
6
REF
12-BIT
DAC
GND
5
+
V_{OUT 7 RAIL-TO-RAIL}
VOLTAGE
–
OUTPUT
1659 TA01
Differential Nonlinearity
vs Input Code
0.5
0
–0.5
0 512 1024 1536 2048 2560 3072 3584 4095
CODE
1659 TA02
1