Reduction System. NTE1801 Datasheet

NTE1801 System. Datasheet pdf. Equivalent

Part NTE1801
Description Integrated Circuit TV dbx Noise Reduction System
Feature NTE1801 Integrated Circuit TV dbx Noise Reduction System Description: The NTE1801 Multiplexed Sound .
Manufacture NTE
Datasheet
Download NTE1801 Datasheet




NTE1801
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 100mVrms (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: (TA = +25°C unless otherwise specified)
Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Power Dissipation (TA = +75°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 580mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ
Power Supply Voltage
VCC
8.0 12.0
Input Signal Voltage
VIN f = 300Hz, Pin4
– 100
Amp 1 Gain
AV1
0 10.3
Amp 2 Gain
AV2
0–
Max
13.5
30.0
20
Unit
V
mVrms
dB
dB



NTE1801
Operating Characteristics: (TA = +25°C, VCC = 12V, 0dB = 100mVrms unless otherwise specified)
Parameter
Symbol
Test Conditions
Notes Min Typ Max Unit
Circuit Current
ICC No Signal
Output Voltage
VO1 f = 300Hz, VIN = +10dB
VO2 f = 300Hz, VIN = 0dB
VO3 f = 300Hz, VIN = 20dB
VO4 f = 8kHz, VIN = +17dB
VO5 f = 8kHz, VIN = +7dB
VO6 f = 8kHz, VIN = 3dB
VO7 f = 1kHz, VIN = 215mV
Maximum Output Voltage VOM f = 1kHz, THD = 1%,
(400 to 300kHz using BPF)
8.0 12.5 17.0 mA
(LR) +17 +20 +23 dB
(LR) 3 0 +3 dB
(LR) 43 40 37 dB
(LR) +12.1 +15.1 +18.1 dB
(LR) 14.6 11.6 8.6 dB
(LR) 43.6 40.6 37.6 dB
(L+R) 0.5 0 +0.5 dB
(LR) 4.0 8.6 VPP
Total Harmonic Distortion THD1 VO = 0dB, f = 1kHz,
(400 to 300kHz using BPF)
(LR) 0.1 0.5 %
THD2 VO = 215mV, f = 1kHz,
(400 to 300kHz using BPF)
(L+R) 0.1 0.3 %
Output Noise Voltage
NL1 Rg = 0, 400 to 30kHz using BPF
NL2
(LR) – –96 90 dBV
(L+R) – –90 70 dBV
Reference Voltage
Vref VCC = 12V
5.8 6.0 6.2 V
Caution: Static Electricity can impair the performance of this device.
Pin Connection Diagram
GND 1
NonInvert Input (Amp 1) 2
Invert Input (Amp 1) 3
Preamp Output 4
Buffer Input 5
Buffer Output 6
RMS Detector 1 Input 7
Capacitor 8
RMS Detector 2 Input 9
Capacitor 10
Resistor Adjust 11
NonInvert Input (Amp 5) 12
Invert Input (Amp 5) 13
VCC 14
28 Reference Voltage
27 Capacitor
26 Buffer Input
25 Buffer Output
24 VCA1 Input
23 VCA1 Adjust
22 N.C.
21 N.C.
20 Input (Amp 3)
19 Output (Amp 3)
18 VCA2 Input
17 Input (Amp 4)
16 LR/SAP Output
15 L+R Output







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