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LTC1654IGN Fiches technique(PDF) 13 Page - Linear Technology

No de pièce LTC1654IGN
Description  Dual 14-Bit Rail-to-Rail DAC in 16-Lead SSOP Package
PDF  16 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LTC1654IGN Fiches technique(HTML) 13 Page - Linear Technology

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LTC1654
1654fb
This circuit shows how to use an LTC1654 and an LT
®1077
to make a wide bipolar output swing 14-bit DAC with an
offset that can be digitally programmed. VOUTA, which can
be set by loading the appropriate code for DAC A, sets the
offset. As this value changes, the transfer curve for the
output moves up and down as illustrated in the graph
below.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X1/X1/2 B
CLR
SCK
SDI
CS/LD
DGND
SDO
X1/X1/2 A
VCC
VOUT B
REFHI B
REFLO B
AGND
REFLO A
REFHI A
VOUT A
LTC1654
0.1
µF
49.9k
1%
5V
1654 TA02
µP
100k
1%
49.9k
1%
VOUT
2 (VOUTB – VOUTA)
15V
–15V
100k
1%
–
+
LT1077
0
VOUTA ≅ 0V
VOUTA ≅ 2.5V
VOUTA ≅ 5V
CODE
5
1654 TA03
–5
–10
10
16383
A Wide Swing, Bipolar Output 14-Bit DAC with Digitally Controlled Offset
TYPICAL APPLICATIO S



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