Datasheet
LTC2755
17
2755f
OPERATION— EXAMPLES
WR
SPAN I/O
INPUT
DATA I/O
INPUT
UPD
D/S
8000
H
010
READ = LOW
V
OUTX
0V (0000
H
IN 0V TO 5V RANGE) 0V (8000
H
IN ±5V RANGE)
2755 TD03
UPDATE
(±5V RANGE, V
OUT
= 0V)
WR
2755 TD04
SPAN I/O
INPUT
DATA I/O
INPUT
READ = LOW
V
OUTX
OV
+5V
–5V
UPD
D/S
C000
H
4000
H
011
UPDATE (5V)
UPDATE (–5V)
WR
2755 TD05
DATA I/O
OUTPUT
DATA I/O
INPUT
READ
UPD
D/S
8000
H
8000
H
0000
H
HI-Z
INPUT REGISTER DAC REGISTER
HI-Z
UPDATE (2.5V)
V
OUTX
OV
+2.5V
1. Load ±5V range with the output at 0V. Note that since span and code are updated together, the output, if started at
0V, will stay there. The 16-Bit DAC code is shown in hex for compactness.
2. Load ±10V range with the output at 5V, changing to –5V.
3. Write and update midscale code in 0V to 5V range (V
OUT
= 2.5V) using readback to check the contents of the input
and DAC registers before updating.