LS404
HIGH PERFORMANCE
QUAD OPERATIONAL AMPLIFIERS
.
.
.
.
.
.
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 operational
amplifier with frequency and phase compensation
built intothe chip. The internal phasecompensation
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
it particularly intended for professional and telecom
applications (active filters, 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.
PIN CONNECTIONS
(top view)
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
ORDER CODES
Part Number
LS404C
LS404I
LS404M
Temperature Range
0 C, +70 C
-40
o
C, +105
o
C
-55 C, +125 C
o
o
o
o
Package
N
•
•
•
D
•
ù
•
Output 1
Inve rting Input 1
Non-inve rting Input 1
V
CC
+
Non-inve rting Input 2
Inve rting Input 2
Output 2
1
2
3
4
5
6
7
+
-
+
-
-
+
-
+
14 Output 4
13 Inverting Input 4
12 Non-inverting Input 4
11 V
C C
-
10 Non-inverting Input 3
9
8
Inverting Input 3
Output 3
December 1997
1/12
LS404
ELECTRICAL CHARACTERISTICS
(V
CC
=
±15V,
T
amb
=
25
o
C, unless otherwise specified)
Symbol
I
CC
I
ib
R
i
V
io
DV
io
I
io
DI
io
I
os
A
vd
Parameter
Supply Current
Input Bias Current
Input Resistance
Input Offset Voltage
Input Offset Voltage Drift
Input Offset Current
Input Offset Current Drift
Output Short Circuit Current
Large Signal Voltage Gain
R
L
= 2kΩ
V
CC
=
±15V
V
CC
=
±4V
90
1.8
T
min
. < T
op
< T
max
.
f = 1kHz
R
s
≤
10kΩ
R
s
≤
10kΩ
T
min
. < T
op
< T
max
.
Test Conditions
LS404I - LM401M
Min.
Typ.
1.3
50
1
0.7
5
10
0.08
23
100
95
3
86
1.5
40
2.5
Max.
2
200
Min.
LS404C
Typ.
1.5
100
1
0.5
5
20
0.1
23
100
95
2.5
MHz
nV
Hz
√
%
0.01
0.03
±3
22
20
0.8
90
f = 100Hz
90
100
1.5
94
94
120
80
86
0.4
±13
0.01
0.03
±3
22
20
1
90
90
120
V
V
PP
V/µs
dB
dB
dB
80
5
Max.
3
300
Unit
mA
nA
MΩ
mV
µV/
C
nA
nA
°C
mA
dB
o
GBP
e
n
Gain-Bandwidth Product
Equivalent Input Noise Voltage
f = 100kHz R
L
= 2k
C
L
= 100pF
f = 1kHz
R
s
= 50Ω
R
s
= 1kΩ
R
s
= 10kΩ
Unity Gain
R
L
= 2kΩ, V
o
= 2V
pp
f = 1kHz
f = 20kHz
R
L
= 2kΩ
8
10
18
15
10
12
20
THD
Total Harmonic Distortion
±V
opp
V
opp
SR
CMR
SVR
Output Voltage Swing
Large Signal Voltage Swing
Slew Rate
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
V
CC
=
±15V ±13
V
CC
=
±4V
f = 10kHz R
L
= 10kΩ
R
L
= 1kΩ
Unity Gain, R
L
= 2kΩ
V
ic
= 10V
V
ic
= 1V
f = 1kHz
V
O1
/V
O2
Channel Separation
3/12
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