NTE1744 데이터 시트보기 (PDF) - NTE Electronics
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NTE1744 Datasheet PDF : 3 Pages
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NTE1744
Integrated Circuit
Dual dbxII Noise Reduction System
Description:
The NTE1744 is an integrated circuit in a 22–Lead DIP type package designed for use in dbxII noise
reduction circuits for stereo applications. This device can be used for U.S. sound multiplex TV ap-
plications and low voltage operation (1.8V) allows the NTE1744 to be used in battery–operated Hi–Fi
equipment.
Features:
D Wide Dynamic Range: 110dB
D Low Operating Voltage: VCCmin = 1.8V
D Minimum Number of External Components
D Adjustment: Only One
D Low Power Consumption
D Wide Operating Voltage Range: VCC = 1.8V to 14V
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.4V
Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Power Dissipation (TA = +75°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mW
Operating Ambient Temperature range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Electrical Characteristics: (TA = +25°C, VCC = 3V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Input/Output Characteristics
ENCODE Mode
VOE–1 VIN = +20dB, f = 1kHz
+7.5 +10.0 +12.5 dB
VOE–2 VIN = 0dB, f = 1kHz
–2.0 0 +2.0 dB
DECODE Mode
VOE–3
VOD–1
VOD–2
VOD–3
VIN = –40dB, f = 1kHz
VIN = +10dB, f = 1kHz
VIN = 0dB, f = 1kHz
VIN = –20dB, f = 1kHz
–23 –20 –17 dB
+17 +20 +23 dB
–2.0 0 +2.0 dB
–44 –40 –36 dB
Note 1. 0dB = 20mV = –34dBV
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