Pin Configuration
IN1 1
GND 2
IN2 3
GND 4
FHP3194
SOIC/TSSOP
IN3 5
-Vs 6
IN4 7
14 +Vs
13 OU T
12 -VIN
11 SD
10 EN
9 A1
8 A0
Pin Assignments
Pin#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Name
IN1
GND
IN2
GND
IN3
-Vs
IN4
A0
A1
EN
SD
-VIN
OUT
+Vs
Description
Input, channel 1
Must be connected to ground
Input, channel 2
Must be connected to ground
Input, channel 3
Negative supply
Input, channel 4
Logic input A0
Logic input A1
Enable pin, “1” = Disable, “0” = Enable; Enabled when left floating
Shutdown pin, “1” = Shutdown, “0” = Active; Active when left floating
Inverting Input of output amplifier
Output
Positive supply
Truth Table
A0
A1
EN
SD
OUT
1
1
0
0
CH4
0
1
0
0
CH3
1
0
0
0
CH2
0
0
0
0
CH1
X
X
1
0
Disable
X
X
X
1
Shutdown
© 2006 Fairchild Semiconductor Corporation
FHP3194 Rev. 1.0.1
www.fairchildsemi.com