The NTE2004 is a monolithic audio noise reduction circuit in a 16鈥揕ead DIP type package designed
餂?/div>
B鈥揟ype noise reduction systems. This device is used to reduce the level of back-
ground noise introduced during recording and playback of audio signals on magnetic tape and to im-
prove the noise level in FM broadcast reception.
Features:
D
Accurate Record Mode Frequency Response
D
Excellent Frequency Response Tracking with Temperature and V
CC
鹵0.4dB
Typ
D
Excellent Back鈥搕o鈥揃ack Dynamic Response 鈥?DC Shift Less Than 20mV Typ
D
Improved Stability of all OP Amps
D
High Reliability Packaging
Absolute Maximum Ratings:
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24V
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0擄 to +70擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Lead Temperature (During Soldering, 60sec max), T
L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300擄C
Electrical Characteristics:
(T
A
= +25擄C, V
CC
= 12V, f = 20Hz to 20kHz. All levels referenced to
580mV
rms
(0dB) unless otherwised specified)
Parameter
Supply Voltage Range
Supply Current
Voltage Gain
(Pin5鈥?)
(Pin3鈥?)
Total Harmonic Distortion
2
nd
Harmonic
3
rd
Harmonic
Signal Handling
Signal鈥搕o鈥揘oise Ratio
Record Mode
Playback Mode
V
CC
= 12V
f = 1kHz, Pin6 and Pin2 Connected
f = 1kHz, 0dB at Pin3, Noise Reduction Out
f = 20Hz to 10kHz, 0dB
f = 20Hz to 10kHz, +10dB
V
CC
= 12V, 1% Distortion at 1kHz
Note 1
Test Conditions
Min
8
鈥?/div>
24.5
鈥?.5
鈥?/div>
鈥?/div>
+12
64
74
Typ
鈥?/div>
16
26.0
0
0.05
0.2
+15
72
82
Max Unit
20
24
27.5
+0.5
0.2
0.5
鈥?/div>
鈥?/div>
鈥?/div>
dB
%
%
dB
dB
dB
V
mA
dB
Note 1. All noise levels are measured CCIR/ARM weighted using a 10K source with respect to
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