LTC1659_1 Datasheet, PDF (1/12 Pages) Linear Technology – 12-Bit Rail-to-Rail Micropower DAC in MSOP Package

FEATURES
■ _{Buffered True Rail-to-Rail Voltage Output}
■ _{Maximum DNL Error: 0.5LSB}
■ _{12-Bit Resolution}
■ _{Supply Operation: 3V to 5V}
■ _{Output Swings from 0V to VREF}
■ _{VREF Can Tie to VCC}
■ _{Schmitt Trigger On Clock Input Allows Direct}
Optocoupler Interface
■ _{Power-On Reset Clears DAC to 0V}
■ _{3-Wire Cascadable Serial Interface}
■ _{Low Cost}
■ _{8-Lead SO and MSOP Packages}
APPLICATIONS
■ _{Digital Calibration}
■ _{Industrial Process Control}
■ _{Automatic Test Equipment}
■ _{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 output,
12-bit digital-to-analog converter (DAC) in an MSOP pack-
age. 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
package make the LTC1659 ideal for battery-powered
applications.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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
6
REF
12-BIT
DAC
+
V_{OUT 7 RAIL-TO-RAIL}
VOLTAGE
–
OUTPUT
POWER-ON
RESET
GND
5
1659 TA01
Differential Nonlinearity
vs Input Code
0.5
0
–0.5
0 512 1024 1536 2048 2560 3072 3584 4095
CODE
1659 TA02
1659fa
1