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TDA3845 Scheda tecnica(PDF) 5 Page - NXP Semiconductors |
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TDA3845 Scheda tecnica(HTML) 5 Page - NXP Semiconductors |
5 / 18 page January 1993 5 Philips Semiconductors Objective specification Quasi split-sound circuit and AM demodulator TDA3845; TDA3845T CHARACTERISTICS VP1 = 5 V (note 11); Tamb = 25 °C; all measurements are referenced to ground (pin 13); unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply supply voltage VP1 pin 14 4.5 5.0 8.8 V VP2 pin 11 (not for TDA3845T) 10.8 12.0 13.2 V Itot total supply current − 40 48 mA IF amplifier R1-16 input resistance − 2 − k Ω C1-16 input capacitance − 2.5 − pF V1-16(RMS) minimum IF input voltage (RMS value) note 1 − 70 100 µV V1-16(RMS) maximum IF input voltage (RMS value) note 2 70 100 − mV ∆G gain control range 60 63 − dB Gv3-16 gain control voltage range 1.5 − 3.0 V BIF IF bandwidth −3 dB 50 70 − MHz V1-16 DC potential − 1.7 − V Intercarrier mode (FM mode; standard B/G) notes 3, 4 and 5 Reference amplifier V8-9(p-p) picture carrier amplitude (peak-to-peak value) − 270 − mV R8-9 operating resistance − 4 − k Ω V8-9 DC potential − 3.9 − V Intercarrier mixer and output stage V12(RMS) output signal (RMS value) at 5.5 MHz 70 100 − mV at 5.74 MHz 32 45 − mV B12 intercarrier bandwidth at −1 dB − 8 − MHz at −3 dB − 9 − MHz residual video AM on intercarrier signal note 6 − 310 % R12 output resistance − 30 −Ω V12 DC potential − 1.8 − V I12(peak) permissible AC output current (peak value) note 7 −−±0.7 mA I12 permissible DC output current −−−2mA |
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