LTC1595C Datasheet

  • LTC1595C

  • Linear Technology [Serial 16-Bit Multiplying DACs]

  • 302.85KB

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LTC1595/LTC1596/LTC1596-1
Serial 16-Bit
Multiplying DACs
FEATURES
s
s
s
s
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DESCRIPTION
The LTC
1595/LTC1596/LTC1596-1 are serial input,
16-bit multiplying current output DACs. The LTC1595 is
pin and hardware compatible with the 12-bit DAC8043 and
comes in 8-pin PDIP and SO packages. The LTC1596 is pin
and hardware compatible with the 12-bit DAC8143/AD7543
and comes in 16-pin PDIP and SO wide packages.
Both are specified over the industrial temperature range.
Sensitivity of INL to op amp V
OS
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.
These DACs include an internal deglitching circuit that
reduces the glitch impulse by more than ten times to less
than 1nV-s typ.
The DACs have a clear input and a power-on reset. The
LTC1595 and LTC1596 reset to zero scale. The LTC1596-1
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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SO-8 Package (LTC1595)
DNL and INL: 1LSB Max
Low Glitch Impulse: 1nV-s Typ
Fast Settling to 1LSB: 2
s (with LT1468)
Pin Compatible with Industry Standard
12-Bit DACs: DAC8043 and DAC8143/AD7543
4-Quadrant Multiplication
Low Supply Current: 10碌A Max
Power-On Reset
LTC1595/LTC1596: Resets to Zero Scale
LTC1596-1: Resets to Midscale
3-Wire SPI and MICROWIRE
TM
Compatible
Serial Interface
Daisy-Chain Serial Output (LTC1596)
Asynchronous Clear Input
LTC1596: Clears to Zero Scale
LTC1596-1: Clears to Midscale
APPLICATIONS
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Process Control and Industrial Automation
Software Controlled Gain Adjustment
Digitally Controlled Filter and Power Supplies
Automatic Test Equipment
TYPICAL APPLICATION
SO-8 Multiplying 16-Bit DAC Has Easy 3-Wire Serial Interface
V
IN
5V
8
1
V
DD
V
REF
CLK
SRI
LD
GND
4
2
R
FB
OUT1
3
1.0
0.8
INTEGRAL NONLINEARITY (LSB)
33pF
0.6
0.4
0.2
0
鈥?.2
鈥?.4
鈥?.6
鈥?0.8
鈥?.0
0
49152
16384
32768
DIGITAL INPUT CODE
65535
1595/96 TA02
CLOCK
DATA
LOAD
7
6
5
LTC1595
LT
1468
V
OUT
1595/96 TA01
U
+
鈥?/div>
U
U
Integral Nonlinearity
1

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