MP7680
PIN DESCRIPTION
40 Pin PDIP , CDIP
PIN NO.
NAME
DESCRIPTION
44 Pin PQFP
PIN NO.
NAME
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 -
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
A1
XFER
WR2
WR1
CS
NC
V
REFA
R
FBA
I
OUT1A
I
OUT2A
I
OUT2B
I
OUT1B
R
FBB
V
REFB
DAC Address Bit 1
Transfer: Updates all DAC’s
Write 2: Gates the XFER Function
Write 1: Gates the DAC Selection
Chip Select
No Connection
Reference Input for DAC A
Feedback Resistor for DAC A
Current Output A
Complement of Output A
Complement of Output B
Current Output B
Feedback Resistor for DAC B
Reference Input for DAC B
1
2
3
4
5
6
7
8
9
10
11-
16
17
18-
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
NC
V
REFA
R
FBA
I
OUT1A
I
OUT2A
NC
I
OUT2B
I
OUT1B
R
FBB
V
REFB
No Connection
Reference Input for DAC A
Feedback Resistor for DAC A
Current Output A
Complement of Output A
No Connection
Complement of Output B
Current Output B
Feedback Resistor for DAC B
Reference Input for DAC B
DB11 to Input Data Bits 11 (MSB) to 6
DB6
NC
DB5-
DB0
V
REFC
R
FBC
I
OUT1C
I
OUT2C
NC
I
OUT2D
I
OUT1D
R
FBD
V
REFD
AGND
DGND
AV
DD
DV
DD
B1/B2
A0
NC
A1
XFER
WR2
WR1
CS
No Connection
Input Data Bits 5 to 0 (LSB)
Reference input for DAC C
Feedback Resistor for DAC C
Current Output C
Complement of Output C
No Connection
Complement of Output D
Current Output D
Feedback Resistor for DAC D
Reference input for DAC D
Analog Ground
Digital Ground
Analog Power Supply
Digital Power Supply
Select Input Format (8/4 or 12 bits in)
DAC Address Bit 0
No Connection
DAC Address Bit 1
Transfer: Updates all DAC’s
Write 2: Gates the XFER Function
Write 1: Gates the DAC Selection
Chip Select
DB11 to Input Data Bits 11 (MSB) to 0 (LSB)
DB0
V
REFC
R
FBC
I
OUT1C
I
OUT2C
I
OUT2D
I
OUT1D
R
FBD
V
REFD
AGND
DGND
AV
DD
DV
DD
B1/B2
A0
Reference input for DAC C
Feedback Resistor for DAC C
Current Output C
Complement of Output C
Complement of Output D
Current Output D
Feedback Resistor for DAC D
Reference input for DAC D
Analog Ground
Digital Ground
Analog Power Supply
Digital Power Supply
Select Input Format (8/4 or 12 bits in)
DAC Address Bit 0
Rev. 3.10
4
EXAR [ EXAR CORPORATION ]
