LTC1658CS8PBF Datasheet, PDF (1/12 Pages) Linear Dimensions Semiconductor – 14-Bit Rail-to-Rail Micropower DAC in MSOP

LTC1658
14-Bit Rail-to-Rail
Micropower DAC in MSOP
FEATURES
s _{14-Bit Resolution}
s _{8-Lead MSOP Package}
s _{Buffered True Rail-to-Rail Voltage Output}
s _{3V or 5V Single Supply Operation}
s _{Very Low Power: ICC(TYP) = 270µA}
s _{Power-On Reset}
s _{3-Wire Cascadable Serial Interface is Compatible}
with SPI and MICROWIRE^TM
s _{Maximum DNL Error: 1LSB}
s _{Low Cost}
U
APPLICATIONS
s _{Digital Calibration}
s _{Industrial Process Control}
s _{Automatic Test Equipment}
s _{Cellular Telephones}
DESCRIPTION
The LTC^®1658 is a single supply, rail-to-rail voltage out-
put, 14-bit digital-to-analog converter (DAC) in an 8-lead
MSOP package. It includes an output buffer amplifier and
an easy-to-use 3-wire cascadable serial interface.
The LTC1658 output swings from 0V to V_REF. The REF pin
can be tied to V_CC for rail-to-rail output swing. The LTC1658
operates from a single 2.7V to 5.5V supply. The typical
power supply current is 270µA.
The low power supply current makes the LTC1658 ideal
for battery-powered applications. The space saving MSOP
provides the smallest 14-bit DAC system available.
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
TYPICAL APPLICATION
Functional Block Diagram: 14-Bit Rail-to-Rail DAC
µP
TO
OTHER
DACS
2.7V TO 5.5V
8
V_CC
2 D_IN
1 CLK
3 CS/LD
4 D_OUT
16-BIT 14
SHIFT
REG
AND
DAC
LATCH
POWER-ON
RESET
6
REF
14-BIT
DAC
GND
5
+
V_{OUT 7 RAIL-TO-RAIL}
VOLTAGE
–
OUTPUT
1658 TA01
Differential Nonlinearity
vs Input Code
1.0
0.8
0.6
0.4
0.2
0
– 0.2
– 0.4
– 0.6
– 0.8
– 1.0
0
4096
8192
CODE
12288 16383
1658 TA02
1