ltc1654cgn-trpbf Linear Technology Corporation, ltc1654cgn-trpbf Datasheet - Page 13

• Manufacturer Part Number: ltc1654cgn-trpbf
• Description: Ltc1654 - Dual 14-bit Rail-to-rail Dac In 16-lead Ssop Package
• Manufacturer: Linear Technology Corporation

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