LTC1664 Linear Technology, LTC1664 Datasheet - Page 12

• Manufacturer Part Number: LTC1664
• Description: Micropower Quad 10-Bit DAC
• Manufacturer: Linear Technology

LTC1664
TYPICAL APPLICATIONS
12
V
OUT1
1
LTC1258-2.5
0.1 F
R1
3.3V
2
4
LT
U2A
®
1490
4
3.3V
8
0.1 F
–
+
INTERFACE
2
3
1
3-WIRE
SERIAL
0.1 F
R2
COARSE
FINE
R1
R2
V
V
CS/LD
OUT A
OUT B
GND
SCK
REF
A Low Power Dual Trim Circuit with Coarse/Fine Adjustment
1
2
3
6
7
8
U
R2 >> R1
V
Similarly V
Example: For R1 = 110 and R2 = 11k,
V
OUT 1
OUT 1
DAC A
DAC B
CONTROL
= V
= V
LOGIC
OUT 2
OUT A
OUT A
SHIFT REGISTER
LTC1664
+
+ 0.01 V
U1
R1
R2
ADDRESS
DECODER
V
OUT B
OUT B
DAC D
DAC C
16
11
10
5
4
9
V
V
V
CLR
D
D
CC
OUT D
OUT C
IN
0.1 F
OUT
1664 TA01
3.3V
TO OTHER
LTC1664s
COARSE
FINE
R1
R2
R2
6
5
0.1 F
–
+
LT1490
U2B
R1
7
V
OUT2