Noise Reduction. NTE1859 Datasheet

NTE1859 Reduction. Datasheet pdf. Equivalent

Part NTE1859
Description Integrated Circuit dbx TV Noise Reduction
Feature NTE1859 Integrated Circuit dbx TV Noise Reduction Integrated Circuit Description: The NTE1859 is an .
Manufacture NTE
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NTE1859
NTE1859
Integrated Circuit
dbx TV Noise Reduction Integrated Circuit
Description:
The NTE1859 is an integrated circuit designed for the dbx–TV noise reduction decode circuit for multi-
channel TV sound systems. This device contains a voltage controlled amplifier, a variable de–empha-
sis circuit with new configuration and RMS detectors with completely integrated active band pass fil-
ters, and offers the complete dbx–TV noise reduction decoder only with a few external components.
Features:
D Integrated Band Pass Filters using Active Filtering Technique and Thin Film Structure with
High Capacitance
D Variable De–emphasis Circuit with New Circuit Configuration
D Minimum Number of External Components
D Wide Operation Voltage Range: 4.7V to 16V
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Power Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17V
Allowable Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 715mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Recommended Operating Voltage:
Power Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V to 15V
Electrical Characteristics: (TA = +25°C, VCC = +9V Reference Level: 0dB = –5dBm (436mVrms)
unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Consumption Current
Decode Characteristics
ICC
Vod–1
Vod–2
Vod–3
Vod–4
Vod–5
Vod–6
Vod–7
Vod–8
Vod–9
No Signal
Vi = –5dB, f = 300Hz
Vi = –15dB, f = 300Hz
Vi = –30dB, f = 300Hz
Vi = 0dB, f = 1kHz
Vi = –10dB, f = 1kHz
Vi = –20dB, f = 1kHz
Vi = 0dB, f = 8kHz
Vi = –10dB, f = 8kHz
Vi = –20dB, f = 8kHz
4.0 5.0 6.3
5.5 7.0 8.5
–14.5 –13.0 –11.5
–44.5 –43.0 –41.5
1.3 3.3 5.3
–19.4 –17.4 –15.4
–39.6 –37.6 –35.6
–4.3 –1.8 0.7
–30.9 –28.4 –25.9
–45.2 –42.7 –40.2
mA
dB
dB
dB
dB
dB
dB
dB
dB
dB



NTE1859
Electrical Characteristics (Cont’d): (TA = +25°C, VCC = +9V Reference Level: 0dB = 5dBm
(436mVrms) unless otherwise specified)
Parameter
Symbol
Test Conditions
VCA Filter Characteristics
Vemp. Filter Characteristics
Total Harmonic Distortion Ratio
Maximum Output Voltage
Vfp1
Vfp2
Vfg1
Vfg2
THD
Vom1
f = 3kHz, Vi = 0dB, refer to 1kHz
f = 8kHz, Vi = 0dB, refer to 1kHz
f = 5kHz, Vi = 0dB, refer to 8kHz
f = 2kHz, Vi = 0dB, refer to 8kHz
f = 1kHz, Vi = 3dB
f = 300Hz, THD = 1.5%
Vom2 f = 8kHz, THD = 1.5%
Output Noise Level
Von A weight
Timing Current
Itime
Center Potential
VCC/2
Min Typ Max Unit
5.5 4.0 2.5 dB
13.0 11.0 9.0 dB
9.4 7.4 5.4 dB
32.3 28.8 25.3 dB
0.1 0.3 %
11.0 12.5 dB
2.0 1.0 dB
– –104 80 dB
(7.1) 7.5 (7.9) µA
4.3 4.5 4.7 V
Electrical Characteristics: (TA = +25°C, VCC = +9V Reference Level: 0dB = 5dBm (436mVrms)
Note 1 unless otherwise specified)
Parameter
Consumption Current
Decoding Characteristics
300Hz, 5dB
300Hz, 15dB
300Hz, 30dB
1kHz, 0dB
1kHz, 10dB
1kHz, 20dB
8kHz, 0dB
8kHz, 10dB
8kHz, 15dB
VCA Filter Characteristics
3kHz
8kHz
Vemp Filter Characteristics
5kHz
2kHz
Total Harmonic Distortion Ratio
Maximum Output Voltage
300Hz
8kHz
Output Noise Level
Middle Point Potential
Symbol 1
Switch Condition
23456
ICC OFF – – – – b
Vod1 ON b b b b
Vod2 ON b b b b
Vod3 ON b b b b
Vod4 ON b b b b
Vod5 ON b b b b
Vod6 ON b b b b
Vod7 ON b b b b
Vod8 ON b b b b
Vod9 ON b b b b
Vfp1 ON a a b b b
Vfp2 ON a a b b b
Vfg1 ON b a b b b
Vfg2 ON b a b b b
THD ON b b b b
Vom1 ON b b b b
Vom2 ON b b b b
Von OFF b a a b
VCC/2 OFF – – – – b
7
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
Note 1. It suffices that a or b is inserted into ().







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