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TDA4657T Scheda tecnica(PDF) 9 Page - NXP Semiconductors |
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TDA4657T Scheda tecnica(HTML) 9 Page - NXP Semiconductors |
9 / 17 page June 1993 9 Philips Semiconductors Preliminary specification Generic multi-standard decoder TDA4657 Hue control (NTSC) and service switch (pin 11) φ phase shift of reference carrier relative to phase at open-circuit pin 11 V11 =3V −30 −− degree V11 = open-circuit −50 +5 degree V11 =5 V +30 −− degree V11 internal bias voltage (proportional to supply voltage) pin 11 open-circuit 3.8 4.0 4.2 V R11 input resistance 25 30 35 k Ω Capacitor for identification (pins 12 and 13) V12, V13 DC voltage for an identified signal 2.8 3.2 3.5 V DC voltage for an unidentified signal 1.5 2.0 2.3 V PLL oscillator measured with nominal crystal (pin 14; see Table 1) R14 initial oscillator amplifier input resistance −500 −− Ω C14 oscillator amplifier input capacitance −− 10 pF ∆f L lock-in-range referenced to 4.43361875 MHz note 9 ±400 −±1300 Hz φ phase difference for ±400 Hz deviation of colour carrier frequency −− 1 degree 2xfsc output (pin 16; if the output is not used, the pin should be connected to supply) V16 DC output level I16 = 0 A 6.1 6.3 6.5 V R16 output resistance I16 =0A −− 350 Ω I16 output current −− −1.0 mA V16 output signal (peak-to-peak value) − 250 − mV Standard setting inputs/outputs (pins 17 to 19; note 10) used as output: npn emitter follower output with 0.1 mA source to ground VO on-state, during scanning, colour OFF 2.3 2.5 2.7 V on-state, colour ON 5.8 6.0 6.2 V RO output resistance IO =0 −− 300 Ω IO output current −− −3mA used as input: forced system switching VO threshold for system ON 6.8 7.0 7.2 V IO input current 100 150 180 µA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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