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TDA7479D Datasheet(PDF) 3 Page - STMicroelectronics |
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TDA7479D Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 7 page THERMAL DATA Symbol Description DIP20 SO20 Unit Rth j-amb Thermal Resistance Junction-Ambient Max 100 200 °C/W ELECTRICAL CHARACTERISTICS (Tamb =25 °C, VS = 5V, unless otherwise specified). Symbol Parameter Test Condition Min. Typ. Max. Unit VS Supply voltage 4.5 5 5.5 V IS Supply current 7.5 11.0 mA FILTER fC Center frequency 56.5 57 57.5 kHz BW 3dB Bandwidth 2.5 3 3.5 kHz G Gain f = 57kHz 18 20 22 dB A Attenuation ∆f ± 4kHz 18 22 dB f = 38kHz 50 60 dB f = 67kHz 35 45 dB RI Input impedance of MPX 80 120 150 K Ω RL Load impedance on FILOUT 1 M Ω S/N Signal to noise ratio VIN =3mVRMS 30 40 dB VIN MPX input signal f = 19kHz; T3 ≤ 40dB(1) f = 57kHz (RDS+ ARI) 1000 50 mVRMS mVRMS VREF Reference VS/2 V DEMODULATOR Input pins (EXTRES, FSEL, TM) all with internal pull down resistor Input pin (OSEL) with internal pull up resistor IPD Input Current VIN = 5V (pull-down input) 15 30 µA IPU Input Current VIN = 0V (pull-up input) -25 -10 µA VIH Input voltage high 0.7 ⋅ VS 0.8 ⋅ VS V VIL Input voltage low 0.2 ⋅ VS 0.3 ⋅ VS V Output pins (RDCL, RDDA, ARI, QUAL, T57) VOH Ouput voltage high IL = 0.5mA 4 4.6 V VOL Output voltage low IL = 0.5mA 0.4 1 V OSCILLATOR VCLL Input level OSCIN pin OSEL = open circuit 1 V VCLH Input level OSCIN pin OSEL = open circuit 4 V Amplitude OSCOUT OSEL = open circuit 4.5 V VPP Amplitude OSCIN (for external drive) OSEL = GND, f = 4.332MHz 100 mVpp OSEL = GND, f = 8.664MHz 120 mVpp OSEL = GND, f = 17.328MHz 150 mVpp (1) The 3rd harmonic (57kHz) must be less than -40dB with respect to the input signal plus gain. TDA7479 3/7 |
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