LTC1257
7
1257fc
BLOCK DIAGRAM
TIMING DIAGRAM
–
+
DAC
5V REGULATOR
12-BIT
SHIFT REGISTER
12-BIT LATCH
2.048V REFERENCE
V
CC
D
OUT
GND
V
OUT
D
IN
LOGIC
SUPPLY
CLK
LOAD
REF
12
12
1257 BD
B10
B11
(PREVIOUS WORD)
B11
MSB
B10
t
1
B1
t
6
B1
B0
LSB
B0
B11
CURRENT WORD
t
7
t
2
t
4
t
3
t
8
CLK
D
IN
D
OUT
LOAD
t
5
1257 TD
