LTC1658
14-Bit Rail-to-Rail
Micropower DAC in MSOP
FEATURES
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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.
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14-Bit Resolution
8-Lead MSOP Package
Buffered True Rail-to-Rail Voltage Output
3V or 5V Single Supply Operation
Very Low Power: I
CC(TYP)
= 270µA
Power-On Reset
3-Wire Cascadable Serial Interface is Compatible
with SPI and MICROWIRE
TM
Maximum DNL Error: 1LSB
Low Cost
APPLICATIONS
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Digital Calibration
Industrial Process Control
Automatic Test Equipment
Cellular Telephones
TYPICAL APPLICATION
Functional Block Diagram: 14-Bit Rail-to-Rail DAC
2.7V TO 5.5V
8
V
CC
2 D
IN
1 CLK
µP
3 CS/LD
16-BIT
SHIFT
REG
AND
DAC
LATCH
14
14-BIT
DAC
6
REF
+
–
V
OUT
7
DNL ERROR (LSB)
RAIL-TO-RAIL
VOLTAGE
OUTPUT
4 D
OUT
TO
OTHER
DACS
POWER-ON
RESET
GND
5
1658 TA01
U
U
U
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
LINEAR_DIMENSIONS [ LINEAR DIMENSIONS SEMICONDUCTOR ]
