LTC1655
16-Bit Rail-to-Rail
Micropower DAC in
SO-8 Package
FEATURES
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DESCRIPTIO
16-Bit Monotonicity Over Temperature
Deglitched Rail-to-Rail Voltage Output
SO-8 Package
5V Single Supply Operation
I
CC(TYP)
: 600碌A(chǔ)
Internal Reference
Maximum DNL Error: 1LSB
Power-On Reset
3-Wire Cascadable Serial Interface
Low Cost
The LTC
廬
1655 is a rail-to-rail voltage output, 16-bit digi-
tal-to-analog converter (DAC) in an SO-8 package. It
includes an output buffer and a reference. The 3-wire serial
interface is compatible with SPI/QSPI and MICROWIRE
TM
protocols. The CLK input has a Schmitt trigger that allows
direct optocoupler interface.
The LTC1655 has an onboard 2.048V reference that can be
overdriven to a higher voltage. The output swings from 0V
to 4.096V when using the internal reference. The typical
power dissipation is 3.0mW on a single 5V supply.
The LTC1655 is pin compatible with Linear Technology鈥檚
12-bit V
OUT
DAC family, allowing an easy upgrade path.
It is the only buffered 16-bit DAC in an SO-8 package and
it includes an onboard reference for stand alone
performance.
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
APPLICATIO S
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Digital Calibration
Industrial Process Control
Automatic Test Equipment
Cellular Telephones
TYPICAL APPLICATIO
Functional Block Diagram: 16-Bit Rail-to-Rail DAC
4.5V TO 5.5V
8
V
CC
2 D
IN
1 CLK
碌P
3 CS/LD
16-BIT
SHIFT
REG
AND
DAC
LATCH
16
16-BIT
DAC
REF
2.048V
6
REF
DNL ERROR (LSB)
+
鈥?/div>
V
OUT
7
RAIL-TO-RAIL
VOLTAGE
OUTPUT
(0V TO 4.096V)
4 D
OUT
POWER-ON
RESET
GND
5
1655 TA01
TO
OTHER
DACS
U
Differential Nonlinearity
vs Input Code
1.0
0.8
0.6
0.4
0.2
0
鈥?0.2
鈥?0.4
鈥?0.6
鈥?0.8
鈥?1.0
0
16384
32768
CODE
49152
65535
1655 TA02
U
U
1
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