Datenblatt-Suchmaschine für elektronische Bauteile |
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TDA1576T Datenblatt(PDF) 8 Page - NXP Semiconductors |
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TDA1576T Datenblatt(HTML) 8 Page - NXP Semiconductors |
8 / 16 page 1998 Nov 18 8 Philips Semiconductors Product specification FM/IF amplifier/demodulator circuit TDA1576T OPERATING CHARACTERISTICS VP = 8.5 V; fIF = 10.7 MHz; RS =60 Ω; fm = 400 Hz with ∆f= ±22.5 kHz; 50 µs de-emphasis (C8-9 = 6.8 nF); Tamb =25 °C and measurements taken in Fig.1; unless otherwise specified. The demodulator circuit is adjusted at minimum second harmonic distortion with ViIF = 1 mV. Standby switch; see Fig.9 V5 input voltage for FM on ; V19 = 0.3 V 2.4 2.5 − V input voltage for FM off − 2.9 3 V linear range − 350 − mV I5 input current V5 =0to2V −−−100 µA V5 = 3.5 to 15 V −− 1 µA temperature dependence FM on (3.5VBE) − 7 − mV/K FM off (5VBE) − 10 − mV/K Supply voltage smoothing V1-2 internal voltage drop proportional to V1 − 3VBE 80 210 400 mV R1-2 internal resistor 5.8 8.3 10.8 k Ω SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT IF amplifier and demodulator ViIF(rms) input sensitivity (RMS value) −3 dB before limiting 14 22 35 µV S/N = 26 dB − 10 −µV S/N = 46 dB − 55 −µV VoAF(rms) AF output voltage (RMS value) 60 67 75 mV VoN noise voltage for ViIF = 0 (RMS value; pins 8 and 9) RS = 300 Ω; f = 250 to 15000 Hz − 900 −µV weighted noise voltage in accordance with “DIN 45405” − 2 − mV S/N signal-to-noise ratio (pins 8 and 9) ViIF = 1 mV (RMS); see Fig.3 − 72 − dB α AM AM suppression ViIF = 0.5 to 200 mV; FM: 70 Hz; ±15 kHz; AM: 1 kHz; m = 30% − 50 − dB α FM FM suppression for FM off ViIF = 500 mV; V5 =3V 80 −− dB ∆V 8, 9 AFC shift in relation to minimum second harmonic distortion α 2H ViIF = 0.03 to 500 mV − 25 − mV DC offset at second harmonic distortion operating − 0 ±100 mV mute or FM off − 0 ±50 mV α 3H distortion for third harmonic − 0.65 − % RR ripple rejection Vripple = 200 mV on VP f = 100 Hz 43 48 − dB SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT V 3, 7 V 3, 7(max) ----------------------- 0.9 = V 5 T ∆ ------- |
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