NTE1801 Datasheet, PDF (1/3 Pages) NTE Electronics – Integrated Circuit TV dbx Noise Reduction System

NTE1801
Integrated Circuit
TV dbx Noise Reduction System
Description:
The NTE1801 Multiplexed Sound dbx Noise Reduction Decoder is a single–chip linear IC in a
28–Lead DIP type package suitable for US NTSC System use. The device incorporates two RMS–
level sensors and VCA circuits, as well as five operational amplifiers and two buffer circuits.
A complete multiplexed sound system for US NTSC System television sets can be built by interfacing
the NTE1801 with the NTE1800 Multiplexed Sound Decoder.
Features:
D Low Distortion Ratio, Low Interference
D Low Power Supply Current
D Single, 8V to 15V Power Supply
D 100mV_rms (300Hz, 0dB) Input Voltage (Pin4)
D Easily Interfaced to the NTE1800
Functions:
D On–Chip dbx Noise Reduction Decoder and VCA Circuits
D On–Chip RMS Level Sensor
D L + R Signal Buffer Amplifier
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Supply Voltage, V_CCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Power Dissipation (T_A = +75°C), P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 580mW
Operating Temperature Range, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C
Recommended Operating Conditions: (T_A = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ
Power Supply Voltage
V_CC
8.0 12.0
Input Signal Voltage
V_IN f = 300Hz, Pin4
– 100
Amp 1 Gain
AV1
0 10.3
Amp 2 Gain
AV2
0
–
Max
13.5
–
30.0
20
Unit
V
mV_rms
dB
dB