NTE891M & NTE891SM
Integrated Circuit
Dual Audio Operational Amplifier
Description:
The NTE891M and NTE891SM are dual general purpose operational amplifiers designed with partic-
ular emphasis on performance in audio systems. Thiese devices deliver low noise, high speed and
wide bandwidth without increasing external components for all closed loop gains and is therefore opti-
mized for all preamp and high level stages in PCM and HiFi systems.
Features:
D
Wide Dynamic Range
D
Low Input Noise Voltage
D
High Slew Rate
D
High Gain Bandwidth Product
D
Wide Power Bandwidth
D
Low Distortion
D
Low Offset Voltage
D
Large Phase Margin
D
Available in 8Lead Mini DIP (NTE891M) and Surface Mount SOIC8 (NTE891SM)
Absolute Maximum Ratings:
Supply Voltage, V
CC
V
EE
36V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Input Voltage (Note 1), V
ID
30V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Voltage Range (Note 1), V
IC
15V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (Note 2), P
D
500mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
40
to +85
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
60
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Soldering Temperature (10 seconds), T
L
+260
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. If supply voltage is less than
15V, it is equal to supply voltage.
Note 2. This is a permissible value at T
A
+85
C.
DC Electrical Characteristics: (T
A
= +25
C, V
S
=
15V, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Input Offset Voltage
V
OS
R
S
= 10
0.3
5
mV
Input Offset Current
I
OS
10
200
nA
Input Bias Current
I
B
500
1000
nA
Voltage Gain
A
V
R
L
= 2k
, V
O
=
10V
90
110
dB
Output Voltage Swing
V
OM
R
L
= 10k
12
13.5
V
R
L
= 2k
10
13.4
Input CommonMode Range
V
CM
12
14.0
V
CommonMode Rejection Ratio
CMRR
V
IN
=
12V
80
100
dB
Power Supply Rejection Ratio
PSRR
V
S
= 15V to 5V, 15V to 5V
80
100
dB
Supply Current
I
Q
V
O
= 0V, Both Amps
5
8
mA
AC Electrical Characteristics: (T
A
= +25
C, V
S
=
15V, R
L
= 2k
,
unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Slew Rate
SR
R
L
= 2k
5
7
V/
s
Gain Bandwidth Product
GBW
f = 100kHz
10
15
MHz
Average Temperature
Coefficient of Input Offset
Voltage
V
OS
/
T
2
V/
C
Distortion
THD
R
L
= 2k
, f = 20
20kHz,
V
OUT
= 3V
rms
, A
V
= 1
0.002
%
Input Referred Noise Voltage
e
n
R
S
= 100
, f = 1kHz
4.5
nV/
Hz
Input Referred Noise Current
i
n
f = 1kHz
0.7
pA/
Hz
Power Bandwidth
PBW
V
O
= 27V
pp
, R
L
= 2k
,
THD
1%
120
kHz
Unity Gain Frequency
f
U
Open Loop
9
MHz
Phase Margin
M
Open Loop
60
deg
Input Referred Cross Talk
f = 20
20kHz
120
dB
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