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TDA4470-MFLG3 Datasheet(PDF) 9 Page - TEMIC Semiconductors |
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TDA4470-MFLG3 Datasheet(HTML) 9 Page - TEMIC Semiconductors |
9 / 16 page TDA4470-M Preliminary Information TELEFUNKEN Semiconductors Rev. A2, 15-Oct-96 9 (16) Unit Max. Typ. Min. Symbol Test Conditions / Pins Parameters Output resistance See note 1 Rout 150 W Sound IF output voltage (5.5 MHz output voltage) vin = 10 mV vout 180 250 350 mVRMS Weighted signal to noise ratio: (CCIR 468) Ref. signal: vin = 10 mV; FM dev. = ±27 kHz fmod = 1 kHz; tested with the double FM demod. U2860B; B/G modulated VIF signal Black screen: Channel 1/2 Grid pattern: Channel 1/2 Grey screen 50%: Channel 1/2 S/N S/N S/N 60/58 54/52 60/57 dB dB dB Ripple rejection See note 1, Pin 23/Pin 24 RR 35 dB AF output-AM Pin 25 see note 11 DC output voltage VDC 2.2 V Output resistance See note 1 Rout 150 W AF output voltage voAF 400 500 630 mVRMS Total harmonic distortion m = 54% fmod = 1 kHz and 12.5 kHz THD 1 2 % Signal to noise ratio Reference: m = 54 %, fmod = 1 kHz, 22 kHz low pass filter S/N 65 dB Ripple rejection See note 1, Pin 23/Pin 25 RR 28 dB SIF input selector switch Pin 3 Control voltage: input 1 active input 2 active See note 12 VSW 2.0 0 VS 0.8 V V Switching current ISW ±100 mA Notes 1.) This parameter is given as an application information and not tested during production. 2.) In VCR mode the VIF- and SIF path is switched off. 3.) Adjustment of turn over point (delayed tuner AGC) with external resistor Rtop or external voltage Vtop possible. 4.) Resonance circuit of VCO (fo = 38.9 MHz): CVCO = 8.2 – 10 pF, Coil LVCO with unloaded Q-factor Qo w 60 for an oscillator voltage w 100 mVRMS at Pin 20 – 21 (e.g. TOKO coil 7 KM, 292 XNS - 4051Z) 5.) The oscillator drift is related to the picture carrier frequency, at external temperature-compensated LC circuit. 6.) a (1.07) = 20 log (4.43 MHz component/1.07 MHz component); a (1.07) value related to black-white signal input signal conditions: picture carrier = 0 dB, colour carrier = –6 dB, sound carrier = –24 dB 7.) Without external control at Pin 13 the IC automatically operates in mode 1: ⇒ negative modulated video-IF signals and FM/NICAM sound signals. 8.) Without control voltage at Pin 19 falling AFC curve is automatically selected. 9.) With open circuit at Pin 14 the L’ switch is not active. 10.) Picture carrier PC = 38.9 MHz; sound carrier SC1 = 33.4 MHz, SC2 = 33.16 MHz; PC/SC1 =13 dB; PC/SC2 = 20 dB; PC unmodulated (equivalent to sync. peak level). 11.) Sound carrier SC = 32.4 MHz, modulated with fmod = 1 kHz, m = 54%; vin =10 mV 12.) Without control voltage at Pin 3 the SIF input 1 is automatically selected. |
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