Datasheet

LTC2755
12
2755f
BLOCK DIAGRAM
DAC A
16-BIT WITH
SPAN SELECT
DAC B
16-BIT WITH
SPAN SELECT
16
3
16
3
16
I
OUT1A
R
FBA
R
OFSB
REFA
REFB
R
COM1
R
OFSA
R
IN1
V
DD
I
OUT2A
I
OUT1B
I
OUT2B
R
VOSA
R1 R2
R
FBB
3
16
3
R
VOSB
R
IN2
DATA DAC
REGISTER
SPAN INPUT
REGISTER
DATA INPUT
REGISTER
SPAN INPUT
REGISTER
DATA INPUT
REGISTER
LTC2755-16
I/O
PORT
DATA I /O
4-12, 36-42
SPAN I /O
1, 52, 47
DAC
ADDRESS
I/O
PORT
SPAN DAC
REGISTER
DATA DAC
REGISTER
SPAN DAC
REGISTER
16
3
DAC C
16-BIT WITH
SPAN SELECT
DAC D
16-BIT WITH
SPAN SELECT
2755 BD
16
3
16
3
16
I
OUT1C
R
FBC
R
OFSC
R
OFSD
REFC
REFD
R
COM2
I
OUT2C
I
OUT1D
I
OUT2D
R
VOSC
R3 R4
R
FBD
MSPANREAD WR UPD D/S CLR
3
16
3
R
VOSD
3, 13, 19, 35, 45, 65
DATA DAC
REGISTER
SPAN INPUT
REGISTER
DATA INPUT
REGISTER
SPAN INPUT
REGISTER
CONTROL LOGIC
POWER-ON
RESET
DATA INPUT
REGISTER
SPAN DAC
REGISTER
DATA DAC
REGISTER
SPAN DAC
REGISTER
GND
A0
A1
A2
15
64
63
62
61
60
59
2
58
53
54
55
56
46
57
32
31
30
29
28
27
34
26
21
22
23
24
14
25
332048505149
16
17
18