Datasheet

10
LTC1590
Very Low Power Single Supply Dual V
OUT
DAC
TYPICAL APPLICATIONS
U
V
OUT A
V
OUT B
0V TO 2.2V
1590 TA06
500k
50k
500k
50k
210k
120k
V
+

3.3V
V
+

3.3V
50k
0.1µF
LT1004-1.2
I
SUPPLY TOTAL
= 100µA (TYP)
(WORSE-CASE CODE)
91
710
16
2
0.2V
3
4
8
6
5
V
CC
DAC B
DAC A
AGND DGND
LTC1590
V
REF B
R
FB B
OUT1 B
OUT2 B
OUT1 A
OUT2 A
V
REF A
R
FB A
–
+
1/4
LT1179
–
+
1/4
LT1179
–
+
1/4
LT1179
13
14
11
12
15
DATA IN
SERIAL CLOCK
CHIP SELECT/DAC LOAD
DATA OUT
CLEAR
16
98
1
2
10
1590 TA08
3
5
7
1
8
6
4
5
6
2
3
4
V
OUT B
V
OUT A
5V
V
IN B
±10V
7
33pF
0.1µF
0.01µF
33pF
15V
–15V
0.01µF
V
OUT
= –V
IN
4096
D
()
V
IN A
±10V
DAC B
V
REF B
R
FB B
V
REF A
R
FB A
DAC A
24-BIT
SHIFT
REG
AND
LATCH
D
IN
CLK
CS/LD
D
OUT
CLR
DGND
AGND
LTC1590
OUT1 B
OUT2 B
OUT2 A
OUT1 A
+
–
+
–
1/2
LT1358
1/2
LT1358
Dual Programmable Gain Amplifier