參數(shù)資料
型號(hào): LTC1657C
廠商: Linear Technology Corporation
英文描述: Dual LinCMOS(TM) Timer 14-PDIP
中文描述: 并行16位軌到軌微援
文件頁(yè)數(shù): 12/12頁(yè)
文件大?。?/td> 194K
代理商: LTC1657C
12
LTC1657
LINEAR TECHNOLOGY CORPORATION 1999
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
G
FAX: (408) 434-0507
G
www.linear-tech.com
1657f LT/TP 0400 4K PRINTED IN USA
PART NUMBER
LTC1446(L)
LTC1450(L)
LTC1458(L)
LTC1650
LTC1655(L)
DESCRIPTION
Dual 12-Bit V
OUT
DACs in SO-8 Package
Single 12-Bit V
OUT
DACs with Parallel Interface
Quad 12-Bit Rail-to-Rail Output DACs with Added Functionality
Single 16-Bit V
OUT
Industrial DAC in 16-Pin SO
Single 16-Bit V
OUT
DAC with Serial Interface in SO-8
COMMENTS
V
CC
= 5V (3V), V
OUT
= 0V to 4.095V (0V to 2.5V)
V
CC
= 5V (3V), V
OUT
= 0V to 4.095V (0V to 2.5V)
V
CC
= 5V (3V), V
OUT
= 0V to 4.095V (0V to 2.5V)
V
CC
=
±
5V, Low Power, Deglitched, 4-Quadrant Multiplying V
OUT
V
CC
= 5V (3V), Low Power, Deglitched, V
OUT
= 0V to 4.096V
(0V to 2.5V)
RELATED PARTS
TYPICAL APPLICATIO
This circuit shows how to measure negative offset. Since
LTC1657 operates on a single supply, if its offset is
negative, the output for code 0 limits at 0V. To measure
U
this negative offset, a negative supply is needed, connect
resistor R1 as shown in the figure. The output voltage is
the negative offset when code 0 is loaded in.
Although LTC1657 output is up to 4.096V with its internal
reference, higher voltages can be achieved with the help of
another op amp. The following circuit shows how to
increase the output swing of LTC1657 by using an LT1218.
As shown in the configuration, the output of LTC1657 is
amplified by 8 for an output swing of 0V to 32.768V, or a
convenient 0.5mV/LSB.
0.1
μ
F
5V
–5V
1657 TA06
DATA (0:15)
CSLSB
CSMSB
WR
LDAC
CLR
GND
V
CC
REFOUT
REFHI
REFLO
X1/X2
LTC1657
μ
P
26
21
20
22
23
24
25
5:19
2
3
1
28
27
V
OUT
R1
100k
0.1
μ
F
5V
1657 TA07
V
OUT
=
1 +
0.1
μ
F
36V
(D
IN
)(4.096)
65536
R2
R1
DATA (0:15)
CSLSB
CSMSB
WR
LDAC
CLR
GND
V
CC
REFOUT
REFHI
REFLO
X1/X2
LTC1657
μ
P
7
6
4
26
21
20
22
23
24
3
25
5:19
2
3
1
28
27
2
V
OUT
+
LT1218
(
)
R1
1k
1%
R2
6.98k
1%
D
IN
32.768 (V)
65535
0
TRANSFER CURVE
V
OUT
Negative Offset Measurement
A Higher Voltage Output DAC
相關(guān)PDF資料
PDF描述
LTC1657IGN Parallel 16-Bit Rail-to-Rail Micropower DAC
LTC1657IN Parallel 16-Bit Rail-to-Rail Micropower DAC
LTC1657CN Low-Power Dual LinCMOS<TM> Timer 20-LCCC -55 to 125
LTC1657I Low-Power Dual LinCMOS<TM> Timer 14-CDIP -55 to 125
LTC1657CGN Parallel 16-Bit Rail-to-Rail Micropower DAC
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