LTC1655 Datasheet, PDF (1/12 Pages) Linear Technology – 16-Bit Rail-to-Rail Micropower DAC in SO-8 Package

LTC1655
16-Bit Rail-to-Rail
Micropower DAC in
SO-8 Package
FEATURES
s _{16-Bit Monotonicity Over Temperature}
s _{Deglitched Rail-to-Rail Voltage Output}
s _{SO-8 Package}
s _{5V Single Supply Operation}
s _{ICC(TYP): 600µA}
s _{Internal Reference}
s _{Maximum DNL Error: 1LSB}
s _{Power-On Reset}
s _{3-Wire Cascadable Serial Interface}
s _{Low Cost}
U
APPLICATIO S
s _{Digital Calibration}
s _{Industrial Process Control}
s _{Automatic Test Equipment}
s _{Cellular Telephones}
DESCRIPTIO
The LTC^®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’s
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.
TYPICAL APPLICATIO
Functional Block Diagram: 16-Bit Rail-to-Rail DAC
2 D_IN
4.5V TO 5.5V
8
V_CC
REF
2.048V
6
REF
1 CLK
16-BIT 16
µP
SHIFT
3 CS/LD REG
AND
16-BIT
DAC
+
DAC
LATCH
–
4 D_OUT
POWER-ON
TO
RESET
OTHER
GND
DACS
5
V_{OUT 7}
RAIL-TO-RAIL
VOLTAGE
OUTPUT
(0V TO 4.096V)
1655 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
16384
32768
CODE
49152 65535
1655 TA02
1