LTC1659
12-Bit Rail-to-Rail
Micropower DAC in
MSOP Package
FEATURES
DESCRIPTION
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The LTC®1659 is a single supply, rail-to-rail voltage output,
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.
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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
The LTC1659 output swings from 0V to REF. The REF input
can be tied to VCC which can range from 2.7V to 5.5V.
This allows a rail-to-rail output swing from 0V to VCC. 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.
APPLICATIONS
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, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Digital Calibration
Industrial Process Control
Automatic Test Equipment
Cellular Telephones
TYPICAL APPLICATION
Functional Block Diagram: 12-Bit Rail-to-Rail DAC
8
6
VCC
2 DIN
1 CLK
μP
3 CS/LD
0.5
REF
+
12-BIT
SHIFT
REG
AND
DAC
LATCH
12-BIT
DAC
VOUT
–
7
RAIL-TO-RAIL
VOLTAGE
OUTPUT
DNL ERROR (LSB)
2.7V TO 5.5V
Differential Nonlinearity
vs Input Code
0
4 DOUT
TO
OTHER
DACS
POWER-ON
RESET
–0.5
GND
5
0
1659 TA01
512 1024 1536 2048 2560 3072 3584 4095
CODE
1659 TA02
1659fa
1
