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TEA0679 Arkusz danych(PDF) 8 Page - NXP Semiconductors |
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TEA0679 Arkusz danych(HTML) 8 Page - NXP Semiconductors |
8 / 40 page 1998 Nov 12 8 Philips Semiconductors Product specification I2C-bus controlled dual Dolby* B-type noise reduction circuit for playback applications TEA0679T IO DC output current pins OUTA and OUTB connected to ground −2 −− mA pins OUTA and OUTB connected to VCC 0.3 −− mA Zo output impedance − 80 100 Ω Vno(rms) equivalent input noise voltage (RMS value) NR off; unweighted; f = 20 Hz to 20 kHz; Rsource =0 Ω − 0.7 1.4 µV VTD AMS timing (DC level) resistor Rt connected to pin TD VCC − 3 − VCC V Voffset(DC) DC offset voltage at pins OUTA and OUTB f = 900 MHz; Vi(rms) =6V − 40 − mV Voffset(AD) overall offset voltage between AGND (pin 20) and DGND (pin 29) −0.4 − +0.4 V Level adjustment GCR gain control range note 1 24.2 25.2 26.2 dB Gstep step size − 0.4 − dB GE step error between any adjacent step −− 0.4 dB Switching thresholds OPTIONAL EQUALIZATION TIME CONSTANT SWITCH (pin EQS) VIL LOW-level input voltage 70 µs; IL ≥−200 µA −0.3 − +0.8 V VOL LOW-level output voltage 70 µs; IL ≤ 1mA −− 0.4 V VIH HIGH-level input voltage 120 µs2 −− V VOH HIGH-level output voltage 120 µs; IL ≥−50 µA 2.8 − 3.3 V OPTIONAL HEAD SWITCH (pin HS) VIL LOW-level input voltage INPUT 2 on; IL ≥−150 µA −0.3 − +0.8 V VOL LOW-level output voltage INPUT 2 on; IL ≤ 10 µA −− 0.4 V VIH HIGH-level input voltage INPUT 1 on 2 −− V VOH HIGH-level output voltage INPUT 1 on; IL ≥−50 µA 2.8 − 3.3 V Search modes BLANK SKIP BSth(M-P) dynamic level threshold blank skip mode; f = 10 kHz −30 −27 −24 dB tsw(P-M) switching time pause-to-music blank skip mode; f = 10 kHz; signal on channel A and B; note 2 2.1 4.15 6.3 ms blank skip mode; f = 10 kHz; signal on one channel; note 2 4.1 8.3 12.5 ms tsw(M-P) switching time music-to-pause blank skip mode; f = 10 kHz; note 2 10 19 30 ms SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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