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TDA1581T Datasheet(PDF) 6 Page - NXP Semiconductors |
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TDA1581T Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 14 page March 1992 6 Philips Semiconductors Preliminary specification Decoder for traffic warning (VWF) radio transmissions TDA1581T Note 1. selectable by R14-8 or Z12-8. DK circuit V17DKon switch-on threshold level pin 2 high-Z 600 670 750 mV switch hysteresis 3.1 3.6 4.1 dB V18-20off DK switch threshold level for DK-off (Schmitt trigger output) (typ. value = 1 × VBE) pin 2 conducting − 0.6 − V DK output (pin 2) I2 permitted load current −− 0.5 mA V2-20sat saturation voltage I2 = 1.5 mA −− 0.35 V V2-20 rejection voltage I2 <5 µA18 −− V BK and DK filter amplifiers Go open loop gain f = 100 Hz 84 −− dB Gi current gain 120 −− dB Ii input bias current −−±50 nA Vo5-8 output offset voltage R5-6 = R16-17 = 680 kΩ− − ±50 mV V17-8 Io available output current ±1 −− mA Ro output resistance − 2 3.5 k Ω CL permitted load capacitance −− 50 pF Internal reference voltage V8-20 output voltage (typ. value = 0.5VP) 4.0 4.25 4.5 V R8 internal resistance of voltage source −− 5 Ω I8-20 available output current −2 −− mA I20-8 0.6 −− mA I8sc output short-circuit current (typ. value = VP /1 kΩ) −−8 − mA Reference current source V19-20 reference voltage (typ. value = V8-20 − VBE) − 3.6 − V Ri19 internal biasing resistor − 5 − k Ω R19-20 permitted range of external reference resistor 180 − 270 k Ω SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT V 17DKon V 17DKoff ---------------------- |
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