參數(shù)資料
型號(hào): 522940B
英文描述: Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits
中文描述: 集成電路
文件頁(yè)數(shù): 12/12頁(yè)
文件大小: 174K
代理商: 522940B
12
LTC1451
LTC1452/LTC1453
LINEAR TECHNOLOGY CORPORATION 1995
145123fa LT/TP 0100 2K REV A PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900
G
FAX
: (408) 434-0507
G
TELEX
: 499-3977
PART NUMBER
LTC1257
DESCRIPTION
5V to 15V Single Supply, Complete 12-Bit V
OUT
DAC in SO-8 Package
Dual 12-Bit V
OUT
DACs in SO-8
Dual 12-Bit V
OUT
DAC in SO-8
5V/3V 16-Bit V
OUT
DAC in SO-8
Single 12-Bit V
OUT
DAC in MSOP
12-Bit Multiplying Parallel I
OUT
DAC
12-Bit Multiplying Serial I
OUT
DAC
12-Bit Multiplying Serial I
OUT
DAC
COMMENTS
Reference Can Be Overdriven Up to 12V, i.e., FS MAX = 12V
LTC1446/LTC1446L
LTC1448
LTC1655/LTC1655L
LTC1659
LTC7541
LTC7543/LTC8143
LTC8043
5V with 4.096V Full-Scale Output/3V with 2.5V Full Scale
V
CC
from 2.7V to 5.5V, Output Swings to V
REF
Pin Conpatible with LTC1451/LTC1453
V
CC
from 2.7V to 5.5V, Output Swings to V
REF
5V to 16V Supply, 12-Bit Wide Interface
5V Supply, Clear Pin and Serial Data Output (LTC8143)
5V Supply, SO-8 Package
RELATED PARTS
A Wide Swing, Bipolar Output 12-Bit DAC
CLK
D
IN
CS/LD
μ
P
0.1
μ
F
V
CC
V
OUT
GND
V
REF
R1
5k
5V
LTC1451
1451/2/3 TA06
+
LT1077
5V
–5V
R2
10k
R3
10k
R5
20k
R4
20k
2 D
IN
4.095
4096
V
OUT
:
D
IN
V
OUT
4.094
–4.096
2048
4095
– 4.096V
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 V
OUT
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.
TYPICAL APPLICATIO
N
U
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