
Pin Assignment LC89080 (DIP42S)
No. 4030-3/8
LC89080, 89080Q
Pin No.
Symbol
Description
1
DV
DD
DA1
Digital system power supply (+5 V)
2
Channel A digital input (MSB)
3 to 8
DA2 to DA7
Channel A digital input
9
DA8
Channel A digital input (LSB)
10
DB1
Channel B digital input (MSB)
11 to 16
DB2 to DB7
Channel B digital input
17
DB8
Channel B digital input (LSB)
18
DC1
Channel C digital input (MSB)
19 to 24
DC2 to DC7
Channel C digital input
25
DC8
Channel C digital input (LSB)
26
CLK
Clock input
27
DV
DD
DGND
Digital system power supply (+5 V)
28
Digital system ground (0 V)
Channel C negative output. Connect to A.GND through an output resistor R
O
(usually 75
).
Channel C positive output. Connect to A.GND through an output resistor R
O
(usually 75
).
Analog system power supply (+5 V)
Channel B negative output. Connect to A.GND through an output resistor R
O
(usually 75
).
Channel B positive output. Connect to A.GND through an output resistor R
O
(usually 75
).
Analog system ground (0 V)
Channel A negative output. Connect to A.GND through an output resistor R
O
(usually 75
).
Channel A positive output. Connect to A.GND through an output resistor R
O
(usually 75
).
Analog system power supply (+5 V)
29
ICOB
30
ICO
31
AV
DD
IBOB
32
33
IBO
34
AGND
35
IAOB
36
IAO
37
AV
DD
COMP
38
Phase compensation capacitor. Connect a 1 μF capacitor between this pin and ground.
39
I
REF
V
REF
IN
Reference current output. Connect a resistor that is 4 times the output resistance R
O
to this pin.
Reference voltage input. This input pin sets the analog output dynamic range.
40
41
V
REF
OUT
Reference voltage output. The output voltage is set to 0.2 times V
DD
by a resistor divider.
When V
DD
is 5.0 V, a 1.0 V reference voltage can be acquired from pin 40.
Digital system ground (0 V)
42
DGND