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TDA7340P Datasheet(PDF) 7 Page - STMicroelectronics |
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TDA7340P Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 16 page STEREO DECODER PART ELECTRICAL CHARACTERISTICS (VS = 9V; modulation frequency: 1KHz; de-emphasis time: T= 50 µs; nominal MPX input voltage: VMPX = 0.5VRMS (75KHz deviation); GI = 3.5dB; Tamb =27°C; un- less otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit VIN MPX Input Level 0.5 1.25 VRMS RIN Input Resistance 35 50 65 K Ω GMIN Minimum Input Gain 2.5 3.5 4.5 dB GMAX Maximum Input Gain 9.5 11 12.5 dB GSTEP Step Resolution 1.75 2.5 3.25 dB SVRR Supply Voltage Ripple Rejection VRIPPLE = 100mV; f = 1KHz 50 60 dB VO DC Output Voltage (HCL, HCR) 4.2 4.5 4.8 V α Channel Separation VSB -VR = 100mVDC 50 dB THD Total Harmonic distortion 0.02 0.2 % S + N N Signal plus noise to noise ratio f = 200Hz to 16KHz; S = 2VRMS 91 dB CARRIER AND HARMONIC SUPPRESSION AT THE OUTPUT α19 Pilot Signal f = 19KHz 55 75 dB α38 Subcarrier f = 38KHz 75 dB α57 Subcarrier f = 57KHz 62 dB α76 Subcarrier f = 76KHz 90 dB INTERMODULATION (note 1) α2fmod = 10KHz; fspur = 1KHz 65 dB α3fmod = 13KHz; fspur = 1KHz 75 dB TRAFFIC RADIO (note 2) α57 Signal f = 57KHz 70 dB SCA - SUBSIDIARY COMMUNICATIONS AUTHORIZATION (note 3) α67 Signal f = 67KHz 75 dB ACI - ADJACENT CHANNEL INTERFERENCE (note4) α114 Signal f = 114KHz 95 dB α190 Signal f = 190KHz 84 dB MONO/ STEREO SWITCH VINTH Pilot Threshold Voltage for stereo ”ON” Pth =1 Pth =0 11 18 15 25 22 34 mVRMS mVRMS VINTH Pilot Threshold Voltage for stereo ”OFF” Pth =1 Pth =0 6 13 12 19 18 25 mVRMS mVRMS STEREO BLEND VSB-VR Control Voltage for Channel Separation α = 6dB; VR = 3.6V (note 5) -0.31 -0.26 -0.23 V VSB-VR Control Voltage for Channel Separation α = 26dB; -50 mV HIGH CUT CONTROL τdeemp De-Emphasis Time Constant C13,C14 = 1nF; VHCC-VR = 100mV 50 µs RHCC High Cut Control Resistance VHCC-VR = 100mV 50 K Ω RHCC High Cut Control Resistance VHCC-VR = -1.3V (note 6) 115 150 185 K Ω VCO fOSC Oscillator Frequency 456 ∆f/f Capture and Holding Range 1 TDA7340 7/16 |
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