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Número de pieza	TDA9809M
Descripción	Single standard multimedia IF-PLL and FM radio demodulator
Fabricantes	NXP Semiconductors
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No Preview Available ! INTEGRATED CIRCUITS DATA SHEET TDA9809M Single standard multimedia IF-PLL and FM radio demodulator Preliminary speciﬁcation File under Integrated Circuits, IC02 1998 Jan 08 1 page Philips Semiconductors Single standard multimedia IF-PLL and FM radio demodulator Preliminary speciﬁcation TDA9809M PINNING SYMBOL PIN DESCRIPTION ViVIF1 ViVIF2 LP0 1 VIF differential input signal voltage 1 2 VIF differential input signal voltage 2 3 logic port 0 ViRIF CVAGC TPLL VoAF LP2 4 RIF input 5 VIF AGC capacitor 6 PLL loop ﬁlter 7 audio output 8 logic port 2 and soft mute threshold adjustment CDEC Vo(int) ViFM TAGC 9 decoupling capacitor 10 intercarrier output voltage 11 sound intercarrier input voltage 12 TV/radio tuner AGC output Vo(vid) AFC 13 composite video output voltage 14 AFC/RIF level output VCO1 15 VCO1 resonance circuit VCO2 16 VCO2 resonance circuit GND 17 ground CERRES 18 ceramic resonator 10.7 MHz VP TADJ 19 supply voltage 20 tuner AGC takeover point adjustment handbook, halfpage ViVIF1 1 ViVIF2 2 LP0 3 20 TADJ 19 VP 18 CERRES ViRIF 4 17 GND CVAGC 5 16 VCO2 TDA9809M TPLL 6 15 VCO1 VoAF 7 14 AFC LP2 8 13 Vo(vid) CDEC 9 12 TAGC Vo(int) 10 11 ViFM MHA958 Fig.2 Pin configuration. FUNCTIONAL DESCRIPTION The TDA9809M is comprised of the functional blocks shown in Fig.1: • Vision IF amplifier and AGC detector • Tuner (TV/radio) and VIF AGC • Frequency Phase-Locked Loop (FPLL) detector • VCO, Travelling Wave Divider (TWD) and TV AFC • Video demodulator and amplifier • Intercarrier mixer • RIF amplifier and AGC detector • FM-PLL demodulator, level detector and radio AFC • Audio Frequency (AF) signal processing • Internal voltage stabilizer • Logic. Vision IF ampliﬁer and AGC detector The vision IF amplifier contains three AC-coupled differential amplifier stages. Each differential stage includes a feedback network controlled by emitter degeneration. The AGC detector generates the required VIF gain control voltage for constant video output by charging/discharging the AGC capacitor. The sync level of the video signal is therefore detected for negative video modulation. Tuner (TV/radio) and VIF AGC For TV operation, the AGC capacitor voltage is converted to an internal IF control signal and then fed to the tuner AGC to generate the tuner AGC output current at pin TAGC (open-collector output). The tuner AGC takeover point can be adjusted at pin TADJ. This allows the tuner to be matched to the SAW filter in order to achieve the optimum IF input level. For FM radio operation, an AGC detector is provided to obtain some adjacent channel protection. 1998 Jan 08 5 5 Page Philips Semiconductors Single standard multimedia IF-PLL and FM radio demodulator Preliminary speciﬁcation TDA9809M SYMBOL PARAMETER CONDITIONS MIN. VIF-AGC DETECTOR (PIN 5) Ich Idch tres(AGC)(r) charge current note 7 discharge current AGC response time to note 11 a rising VIF step tres(AGC)(f) AGC response time to a falling VIF step 0.75 15 − − TV TUNER AGC (PIN 12) Vi(rms) IF input signal voltage for minimum onset of tuner takeover (RMS value) IF input signal voltage for maximum onset of tuner takeover (RMS value) tuner takeover point accuracy (RMS value) Vo(max) maximum output voltage Vsat ∆VTOP/∆T saturation voltage variation of takeover point with temperature Isink sink current ∆GIF IF slip by automatic gain control input at pins 1 and 2; RTOP = 22 kΩ; I12 = 0.4 mA input at pins 1 and 2; RTOP = 0 Ω; I12 = 0.4 mA RTOP = 13 kΩ; I12 = 0.4 mA from external source; note 2 I12 = 1.5 mA I12 = 0.4 mA see Fig.3 no tuner gain reduction; V12 = 13.2 V maximum tuner gain reduction tuner gain current from 20 to 80% − 50 5 − − − − 1.5 − TV AFC DETECTOR (PIN 14); see Fig.6 and note 12 CRstps ∆fIF/∆T control steepness ∆I14/∆f frequency variation with temperature fPC = 38.9 MHz; note 13 fPC = 45.75 MHz; note 13 IAFC = 0; note 4 Vo(max) output voltage upper see Fig.6 without external limit components Vo(min) output voltage lower limit Io(source) Io(sink) ∆Ir(mod)(p-p) output source current output sink current residual video modulation current (peak-to-peak value) 0.5 0.4 − VP − 0.6 − 150 150 − TYP. 1 20 0.05 2.2 2 100 − − − 0.03 − 2 6 0.75 0.65 − VP − 0.3 0.3 200 200 20 MAX. 1.25 25 0.1 3.5 5 − 20 13.2 0.2 0.07 1 2.6 8 1.0 0.9 ±20 × 10−6 − 0.6 250 250 30 UNIT mA µA ms/dB ms/dB mV mV mV V V dB/K µA mA dB µA/kHz µA/kHz K−1 V V µA µA µA 1998 Jan 08 11 11 Page

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