
10
LTC1590
Very Low Power Single Supply Dual VOUT DAC
TYPICAL APPLICATIONS
U
VOUT A
VOUT B
0V TO 2.2V
1590 TA06
500k
50k
500k
50k
210k
120k
V+
3.3V
V+
3.3V
50k
0.1
F
LT1004-1.2
ISUPPLY TOTAL = 100A (TYP)
(WORSE-CASE CODE)
9
1
710
16
2
0.2V
3
4
8
6
5
VCC
DAC B
DAC A
AGND
DGND
LTC1590
VREF B
RFB B
OUT1 B
OUT2 B
OUT1 A
OUT2 A
VREF A
RFB 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
VOUT B
VOUT A
5V
VIN B
±10V
7
33pF
0.1
F
0.01
F
33pF
15V
–15V
0.01
F
VOUT = –VIN
4096
D
()
VIN A
±10V
DAC B
VREF B
RFB B
VREF A
RFB A
DAC A
24-BIT
SHIFT
REG
AND
LATCH
DIN
CLK
CS/LD
DOUT
CLR
DGND
AGND
LTC1590
OUT1 B
OUT2 B
OUT2 A
OUT1 A
+
–
+
–
1/2
LT1358
1/2
LT1358
Dual Programmable Gain Amplifier