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TDA9845 データシート(PDF) 9 Page - NXP Semiconductors |
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TDA9845 データシート(HTML) 9 Page - NXP Semiconductors |
9 / 20 page 1995 Mar 20 9 Philips Semiconductors Preliminary specification TV and VTR stereo/dual sound processor with digital identification TDA9845 AF outputs (pins 11 and 12) Vo(rms) nominal output signal voltage (RMS value) THD ≤ 0.3%; 54% modulation − 0.5 − V Vo(rms) clipping voltage level (RMS value) THD ≤ 1.5% VP = 5 V 1.4 1.6 − V VP = 8 V 2.4 2.65 − V Ro output resistance 150 250 350 Ω CL load capacitor on output −− 1.5 nF RL load resistor on output (AC-coupled) 10 −− k Ω B frequency response (bandwidth) fi = 40 to 20000 Hz; note 2 −0.5 − +0.5 dB B−3dB frequency response −3 dB; note 2 300 350 400 kHz THD total harmonic distortion note 1 − 0.2 0.3 % S/N(W) weighted signal-to-noise ratio “CCIR468-3” (quasi-peak) 66 75 − dB αcr crosstalk attenuation for notes 1 and 3 DUAL Zs≤ 1kΩ 70 75 − dB STEREO Z s≤ 1kΩ 40 45 − dB αmute mute attenuation Zs≤ 1kΩ; note 1 76 80 − dB ∆VDC change of DC level output voltage between any two modes of operation after switching −− ±10 mV PSRR power supply ripple rejection fr = 70 Hz; see Fig.6 50 65 − dB IO(DC) DC output current −− ±20 µA 10 MHz crystal oscillator (pin 19) fr series resonant frequency of crystal (fundamental mode) CL = 20 pF 9.995 10.008 10.021 MHz fω working oscillator frequency (running in parallel resonance mode) over operating temperature range including ageing and influence of drive circuit 9.988 10.008 10.028 MHz Rr equivalent crystal series resistance even at extremely low drive level ( <1 pW) over operating temperature range with C0 =6pF − 60 200 Ω Rn crystal series resistance of unwanted mode 2 × Rr −− Ω C0 crystal parallel capacitance with Rr ≤100 Ω− 610 pF C1 crystal motional capacitance − 25 50 fF PXTAL level of drive in operation −− 5 µW VOSC(p-p) oscillator operating voltage (peak-to-peak value) 500 550 600 mV SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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