NTE NTE1800 Integrated circuit tv multiplex sound decoder 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 NTE1800 also features mode switching to facilitate the use of remote control, and can be 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 300mVrms (MONO) composite signal input voltage
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 VCO
D On–chip 5fH VCO
Absolute Maximum Ratings:
Power Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Input Signal Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Vp–p
Control Signal Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Vp–p
Power Dissipation (TA ≤ +70°C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW
Lamp Driver Current, Ilamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +125°C
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Power Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 13.2V
Composite Signal Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mVrms
Electrical Characteristics: (TA = +25°C, VCC = 12V unless otherwise specified)
Parameter
Symbol
Test Conditions
Circuit Current
ICC
VCC = 12V, no signal
Stereo Capture Range
CC1
Stereo demodulation input pin 30mVrms
pilot signal level
Stereo Switch Input Sensitivity
Min
Typ
Max
Unit
27
39
52
mA
±1.5
±3.0
–
%
SWsense
Measure pilot level at stereo demodulation
input. Stereo lamp OFF→ON
12
18
22
mVrms
Stereo Switch Hysteresis
Hy1
Pilot level measured at stereo demodulation
input. Stereo lamp ON→OFF, OFF→ON
5
7
9
dB
Stereo Switch L–R Output
Voltage
VoL–R
150mVrms (MONO) stereo demodulation
input voltage
380
430
480
mVrms
Stereo Demodulation Output
L+R Output Voltage
VoL+R
150mVrms (MONO) stereo demodulation
input voltage
380
430
480
mVrms
L+R Output Voltage Pilot
Cancel Level
fHREJ
150mVrms (MONO) stereo demodulation
input voltage
30
35
–
dB
L–R Output Distortion
THDL–R
150mVrms (MONO) stereo demodulation
input voltage, f = 1kHz
–
0.2
0.7
%
L +R Output Distortion
THD L+R
150mVrms (MONO) stereo demodulation
input voltage, f = 1kHz
–
0.2
0.7
%
±19
±25
–
%
25
35
45
mVrms
SAP Capture Range
SAP Sensitivity
CC2
90mVrms SAP input voltage
SAPSENSE Measure SAP input level. SAP lamp
OFF→ON
SAP Switch Hysteresis
Hy2
Measure SAP input level. SAP Lamp
OFF→ON, ON→OFF
2.5
4.5
6.5
dB
SAP Output Distortion
THDSAP
90mVrms SAP input voltage, f = 1kHz,
∆f = 10kHz
–
0.3
1.0
%
VoSAP
90mVrms SAP input voltage, f = 1kHz,
∆f = 10kHz
380
430
480
mVrms
SAP Output Voltage
Mode Switch Crosstalk
CT
150mVrms stereo input, 90mVrms SAP input
45
60
–
dB
L,R Matrix Separation
SEP
150mVrms (MONO) composite input
30
40
–
dB
VOMONO
215mVrms matrix input. Same phase input
450
500
550
mVrms
Matrix Output Voltage (STEREO)
VOL
215/2mV matrix input. Same phase input
450
500
550
mVrms
Matrix Output Voltage (STEREO)
VOR
215/2mVrms matrix input. Reverse phase
input
450
500
550
mVrms
215mVrms matrix input.
450
500
550
mVrms
–
–70
–60
dB
Matrix Output Voltage (MONO)
Matrix Output Voltage (SAP)
Matrix Output Voltage (MUTE)
VOMSAP
MUTE
Pin17 Open
Pin Connection Diagram
GND
Limiter Amp Input
Filter Cap
Filter Cap
5fh VCO Cap
5fh Adjust
Phase Detector Cap
L–R SAP Output
Mode Switch
Mono Switch
L–R SAP Input
L–R Input
R Output
L Output
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
16
1
15
SAP Lamp
Stereo Lamp
Phase Comp Cap
Phase Comp Cap
Phase Comp Input
Phase Comp
Phase Comp
4fh Adjust
Pilot Regeneration Cap
Pilot Input
Stereo Input
Preamp Output
Preamp Input
Mute
L–R Output
1.066 (27.0)
.388 (8.6)
.200
(5.08)
Max
.070 (1.78)
.125 (3.17)
.400 (10.16)
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