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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 +70C), PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mW Lamp Driver Current, Ilamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA Operating Temperature Range, Topg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20 to +70C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40 to +125C Recommended Operating Conditions: (TA = +25C unless otherwise specified) Power Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 13.2V Composite Signal Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mVrms
Electrical Characteristics: (TA = +25C, VCC = 12V unless otherwise specified)
Parameter Circuit Current Stereo Capture Range Stereo Switch Input Sensitivity Stereo Switch Hysteresis Stereo Switch L-R Output Voltage Stereo Demodulation Output L+R Output Voltage L+R Output Voltage Pilot Cancel Level L-R Output Distortion L +R Output Distortion SAP Capture Range SAP Sensitivity SAP Switch Hysteresis SAP Output Distortion SAP Output Voltage Mode Switch Crosstalk L,R Matrix Separation Matrix Output Voltage (MONO) Matrix Output Voltage (STEREO) Matrix Output Voltage (STEREO) Matrix Output Voltage (SAP) Matrix Output Voltage (MUTE) Symbol ICC CC1 SWsense Hy1 VoL-R VoL+R fHREJ THDL-R THD L+R CC2 Test Conditions VCC = 12V, no signal Stereo demodulation input pin 30mVrms pilot signal level Measure pilot level at stereo demodulation input. Stereo lamp OFFON Pilot level measured at stereo demodulation input. Stereo lamp ONOFF, OFFON 150mVrms (MONO) stereo demodulation input voltage 150mVrms (MONO) stereo demodulation input voltage 150mVrms (MONO) stereo demodulation input voltage 150mVrms (MONO) stereo demodulation input voltage, f = 1kHz 150mVrms (MONO) stereo demodulation input voltage, f = 1kHz 90mVrms SAP input voltage Min 27 1.5 12 5 380 380 30 - - 19 25 2.5 - 380 45 30 450 450 450 450 - Typ 39 3.0 18 7 430 430 35 0.2 0.2 25 35 4.5 0.3 430 60 40 500 500 500 500 -70 Max 52 - 22 9 480 480 - 0.7 0.7 - 45 6.5 1.0 480 - - 550 550 550 550 -60 Unit mA % mVrms dB mVrms mVrms dB % % % mVrms dB % mVrms dB dB mVrms mVrms mVrms mVrms dB
SAPSENSE Measure SAP input level. SAP lamp OFFON Hy2 THDSAP VoSAP CT SEP VOMONO VOL VOR VOMSAP MUTE Measure SAP input level. SAP Lamp OFFON, ONOFF 90mVrms SAP input voltage, f = 1kHz, f = 10kHz 90mVrms SAP input voltage, f = 1kHz, f = 10kHz 150mVrms stereo input, 90mVrms SAP input 150mVrms (MONO) composite input 215mVrms matrix input. Same phase input 215/2mV matrix input. Same phase input 215/2mVrms matrix input. Reverse phase input 215mVrms matrix input. 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
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
30
16
1 1.066 (27.0)
15 .388 (8.6) .200 (5.08) Max
.070 (1.78)
.125 (3.17)
.400 (10.16)

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