
NTE15023
Integrated Circuit
dbx TV Noise Reduction Integrated Circuit
Description:
The NTE15023 is an integrated circuit designed for the dbx–TV noise reduction decode circuit for mul-
tichannel TV sound systems. This device contains a voltage controlled amplifier, a variable de–em-
phasis circuit with new configuration and RMS detectors with completely integrated active band pass
filters, and offers the complete dbx–TV noise reduction decoder only with a few external components.
Features:
Integrated Band Pass Filters using Active Filtering Technique and Thin Film Structure with
High Capacitance
Variable De–emphasis Circuit with New Circuit Configuration
Minimum Number of External Components
Wide Operation Voltage Range: 4.7V to 16V
Absolute Maximum Ratings:
(T
A
= +25
°
C unless otherwise specified)
Power Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allowable Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17V
715mW
–20
°
to +75
°
C
–55
°
to +150
°
C
Recommended Operating Voltage:
Power Supply Voltage, V
CC
Electrical Characteristics:
(T
A
= +25
°
C, V
CC
= +9V Reference Level: 0dB = –5dBm (436mVrms)
unless otherwise specified)
5V to 15V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parameter
Symbol
Test Conditions
No Signal
V
i
= –5dB, f = 300Hz
V
i
= –15dB, f = 300Hz
V
i
= –30dB, f = 300Hz
V
i
= 0dB, f = 1kHz
V
i
= –10dB, f = 1kHz
V
i
= –20dB, f = 1kHz
V
i
= 0dB, f = 8kHz
V
i
= –10dB, f = 8kHz
V
i
= –20dB, f = 8kHz
Min
Typ
Max
Unit
Consumption Current
Decode Characteristics
I
CC
V
od
–1
V
od
–2
V
od
–3
V
od
–4
V
od
–5
V
od
–6
V
od
–7
V
od
–8
V
od
–9
4.0
5.0
6.3
mA
5.5
7.0
8.5
dB
–14.5
–13.0
–11.5
dB
–44.5
–43.0
–41.5
dB
1.3
3.3
5.3
dB
–19.4
–17.4
–15.4
dB
–39.6
–37.6
–35.6
dB
–4.3
–1.8
0.7
dB
–30.9
–28.4
–25.9
dB
–45.2
–42.7
–40.2
dB