Datasheet

6
LTC7545A
TYPICAL APPLICATIONS N
U
Bipolar Operation (4-Quadrant Multiplication)
V
DD
V
REF
LTC7545A
R
FB
OUT1
DGND
AGND
3
2
17
16
4–15
18
5V OR 15V
V
REF
–10V TO 10V
µP
WR
CS
DB11–DB0
19
20
1
33pF
R1
10K
0.1µF
V
OUT
7545A TA04
–
+
1/2LT1112
–
+
1/2LT1112
R2
20K
R3
20K
ANALOG OUTPUT
V
OUT
Table 2. Bipolar Offset Binary Code Table
MSB LSB
1111 1111 1111 V
REF
(2047/2048)
1000 0000 0001 V
REF (1/2048)
1000 0000 0000 0V
0111 1111 1111 –V
REF (1/2048)
0000 0000 0000 –V
REF
(2048/2048) = –V
REF
DIGITAL INPUT
BINARY NUMBER
IN DAC LATCH