NTE NTE1800 Datasheet
NTE1800
Integrated Circuit
TV Multiplex Sound Decoder
Description:
The NTE1800 Multiplexed Sound Decoder is a linear integrated circuit in a 30–Lead DIP type package
that incorporates the SAP demodulation and the L, R matrix circuits required to demodulate multiplexed sound signals on the US NTSC system.
The N TE1800 a lso f eatures m ode s witching t o f acilitate the u se o f remote c ontrol, a nd can b e interfaced
easily to the NTE1801 dbx Noise Reduction Decoder IC.
Features:
D Mode switching for remote control
D Built–in muting function
D Pilot cancel circuit
D 8.0 to 13.2V power supply
D 300mV
D 30–pin plastic shrink DIP
D Easily interfaced to the NTE1801
Functions:
D Pilot signal
D SAP signal
D Stereo demodulation
D SAP demodulation
D Mode switching
D Stereo and SAP display drivers
D Pilot canceler
D On–chip 4fH V
D On–chip 5fH V
(MONO) composite signal input voltage
rms
CO
CO
Absolute Maximum Ratings:
Power Supply Voltage, VCCmax 15V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Signal Voltage, V
Control Signal Voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
in
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
in
Power Dissipation (TA ≤ +70°C), PDmax 800mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lamp Driver Current, I
Operating Temperature Range, T
Storage Temperature Range, T
lamp
stg
opg
–20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–40° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Power Supply Voltage, V
CC
Composite Signal Voltage, V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
in
8 to 13.2V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
300mV
5V
5V
30mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
p–p
p–p
rms
Electrical Characteristics: (TA = +25°C, VCC = 12V unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Circuit Current I
CC
Stereo Capture Range CC
VCC = 12V, no signal 27 39 52 mA
Stereo demodulation input pin 30mV
1
rms
pilot signal level
Stereo Switch Input Sensitivity SWsense Measure pilot level at stereo demodulation
input. Stereo lamp OFF→ON
Stereo Switch Hysteresis Hy
Pilot level measured at stereo demodulation
1
input. Stereo lamp ON→OFF, OFF→ON
Stereo Switch L–R Output
Voltage
Stereo Demodulation Output
L+R Output Voltage
L+R Output Voltage Pilot
Cancel Level
L–R Output Distortion THDL–R 150mV
VoL–R 150mV
input voltage
VoL+R 150mV
input voltage
fH
REJ
150mV
input voltage
(MONO) stereo demodulation
rms
(MONO) stereo demodulation
rms
(MONO) stereo demodulation
rms
(MONO) stereo demodulation
rms
input voltage, f = 1kHz
L +R Output Distortion THD L+R 150mV
(MONO) stereo demodulation
rms
input voltage, f = 1kHz
SAP Capture Range CC
SAP Sensitivity SAP
SENSE
90mV
2
SAP input voltage ±19 ±25 – %
rms
Measure SAP input level. SAP lamp
OFF→ON
±1.5 ±3.0 – %
12 18 22 mV
5 7 9 dB
380 430 480 mV
380 430 480 mV
30 35 – dB
– 0.2 0.7 %
– 0.2 0.7 %
25 35 45 mV
rms
rms
rms
rms
SAP Switch Hysteresis Hy
Measure SAP input level. SAP Lamp
2
2.5 4.5 6.5 dB
OFF→ON, ON→OFF
SAP Output Distortion THD
SAP
90mV
SAP input voltage, f = 1kHz,
rms
– 0.3 1.0 %
∆f = 10kHz
SAP Output Voltage V
oSAP
90mV
SAP input voltage, f = 1kHz,
rms
380 430 480 mV
∆f = 10kHz
Mode Switch Crosstalk CT 150mV
L,R Matrix Separation SEP 150mV
Matrix Output Voltage (MONO) V
OMONO
Matrix Output Voltage (STEREO) V
Matrix Output Voltage (STEREO) V
OL
OR
215mV
215/2mV matrix input. Same phase input 450 500 550 mV
215/2mV
stereo input, 90mV
rms
(MONO) composite input 30 40 – dB
rms
matrix input. Same phase input 450 500 550 mV
rms
matrix input. Reverse phase
rms
SAP input 45 60 – dB
rms
450 500 550 mV
input
Matrix Output Voltage (SAP) V
OMSAP
215mV
matrix input. 450 500 550 mV
rms
Matrix Output Voltage (MUTE) MUTE Pin17 Open – –70 –60 dB
rms
rms
rms
rms
rms
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