LTC1595/LTC1596/LTC1596-1
Serial 16-Bit
Multiplying DACs
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DESCRIPTION
FEATURES
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SO-8 Package (LTC1595)
The LTC®1595/LTC1596/LTC1596-1 are serial input,
16-bit multiplying current output DACs. The LTC1595 is
pinandhardwarecompatiblewiththe12-bitDAC8043and
comesin8-pinPDIPandSOpackages.TheLTC1596ispin
andhardwarecompatiblewiththe12-bitDAC8143/AD7543
and comes in 16-pin PDIP and SO wide packages.
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DNL and INL: 1LSB Max
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Low Glitch Impulse: 1nV-s Typ
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Fast Settling to 1LSB: 2µs (with LT1468)
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Pin Compatible with Industry Standard
12-Bit DACs: DAC8043 and DAC8143/AD7543
4-Quadrant Multiplication
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Both are specified over the industrial temperature range.
Sensitivity of INL to op amp VOS is reduced by five times
compared to the industry standard 12-bit DACs, so most
systems can be easily upgraded to true 16-bit resolution
and linearity without requiring more precise op amps.
Low Supply Current: 10µA Max
Power-On Reset
LTC1595/LTC1596: Resets to Zero Scale
LTC1596-1: Resets to Midscale
3-Wire SPI and MICROWIRETM Compatible
Serial Interface
Daisy-Chain Serial Output (LTC1596)
Asynchronous Clear Input
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These DACs include an internal deglitching circuit that
reduces the glitch impulse by more than ten times to less
than 1nV-s typ.
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LTC1596: Clears to Zero Scale
LTC1596-1: Clears to Midscale
The DACs have a clear input and a power-on reset. The
LTC1595andLTC1596resettozeroscale.TheLTC1596-1
is a version of the LTC1596 that resets to midscale.
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
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APPLICATIONS
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Process Control and Industrial Automation
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Software Controlled Gain Adjustment
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Digitally Controlled Filter and Power Supplies
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Automatic Test Equipment
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TYPICAL APPLICATION
SO-8 Multiplying 16-Bit DAC Has Easy 3-Wire Serial Interface
Integral Nonlinearity
1.0
0.8
0.6
0.4
V
IN
5V
8
1
2
R
FB
33pF
V
DD
V
REF
7
6
5
CLK
SRI
LD
CLOCK
DATA
LOAD
–
0.2
0
3
OUT1
LTC1595
LT®1468
+
V
OUT
–0.2
–0.4
–0.6
–0.8
–1.0
GND
4
1595/96 TA01
0
16384
32768
49152
65535
DIGITAL INPUT CODE
1595/96 TA02
1