LTC1452IN8 데이터 시트보기 (PDF) - Linear Technology
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LTC1452IN8 Datasheet PDF : 12 Pages
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LTC1451
LTC1452/LTC1453
TYPICAL APPLICATION
This circuit shows how to make a bipolar output 12-bit
DAC with a wide output swing using an LTC1451 and an
LT1077. R1 and R2 resistively divide down the LTC1451
output and an offset is summed in using the LTC1451
onboard 2.048V reference and R3 and R4. R5 ensures that
the onboard reference is always sourcing current and
never has to sink any current even when VOUT is at full-
scale. The LT1077 output will have a wide bipolar output
swing of – 4.096V to 4.094V as shown in the figure above.
With this output swing 1LSB = 2mV.
A Wide Swing, Bipolar Output 12-Bit DAC
5V
0.1µF
VCC
CLK
µP
DIN LTC1451 VOUT
CS/LD
R1
GND VREF
5k
4.094
VOUT
– 4.096
2048 4095
DIN
R2
10k
R3
10k
R5
20k
5V
+
LT1077
–
VOUT:
2
•
DIN • 4.095
4096
–
4.096V
– 5V R4
20k
1451/2/3 TA06
RELATED PARTS
PART NUMBER
LTC1257
LTC1446/LTC1446L
LTC1448
LTC1655/LTC1655L
LTC1659
LTC7541
LTC7543/LTC8143
LTC8043
DESCRIPTION
5V to 15V Single Supply, Complete 12-Bit VOUT
DAC in SO-8 Package
Dual 12-Bit VOUT DACs in SO-8
Dual 12-Bit VOUT DAC in SO-8
5V/3V 16-Bit VOUT DAC in SO-8
Single 12-Bit VOUT DAC in MSOP
12-Bit Multiplying Parallel IOUT DAC
12-Bit Multiplying Serial IOUT DAC
12-Bit Multiplying Serial IOUT DAC
COMMENTS
Reference Can Be Overdriven Up to 12V, i.e., FS MAX = 12V
5V with 4.096V Full-Scale Output/3V with 2.5V Full Scale
VCC from 2.7V to 5.5V, Output Swings to VREF
Pin Conpatible with LTC1451/LTC1453
VCC from 2.7V to 5.5V, Output Swings to VREF
5V to 16V Supply, 12-Bit Wide Interface
5V Supply, Clear Pin and Serial Data Output (LTC8143)
5V Supply, SO-8 Package
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977
145123fa LT/TP 0100 2K REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1995
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