1/11
■ SINGLE OR SPLIT SUPPLY OPERATION
■ LOW POWER CONSUMPTION
■ SHORT CIRCUIT PROTECTION
■ LOW DISTORTION, LOW NOISE
■ HIGH GAIN-BANDWIDTH PRODUCT
■ HIGH CHANNEL SEPARATION
DESCRIPTION
The LS404 is a high performance quad operation-
al amplifier with frequency and phase compensa-
tion built into the chip. The internal phase compen-
sation allows stable operation as voltage follower
in spite of its high Gain-Bandwidth Product.
The circuit presents very stable electrical charac-
teristics over the entire supply voltage range, and
is particularly intended for professional and tele-
com applications (active filter, etc).
The patented input stage circuit allows small input
signal swings below the negative supply voltage
and prevents phase inversion when the inputs are
over drivers.
ORDER CODE
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
PIN CONNECTIONS (top view)
Part Number Temperature Range
Package
ND
LS404C 0°C, +70°C
••
LS404I -40°C, +105°C
••
LS404M -55°C, +125°C
••
Example : LS204CN
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
Inverting Input 2
Non-inverting Input 2
Non-inverting Input 1
CC
V
-
CC
V
1
2
3
4
8
5
6
7
9
10
11
12
13
14
+
Output 3
Output 4
Non-inverting Input 4
Inverting Input 4
Non-inverting Input 3
Inverting Input 3
-
+
-
+
-
+
-
+
Output 1
Inverting Input 1
Output 2
HIGH PERFORMANCE
QUAD OPERATIONAL AMPLIFIER
November 2001
LS404
