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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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ST7285C Datenblatt(PDF) 109 Page - STMicroelectronics |
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ST7285C Datenblatt(HTML) 109 Page - STMicroelectronics |
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109 / 117 page  109/117 ST72E85 ST72T85 2.3 DC ELECTRICAL CHARACTERISTICS (TA = -40 to +85 °C unless otherwise specified) Note: All voltages are referred to VSS unless otherwise specified. Note:At85 °C and V DD = 5.5V, code 255 is missing. Note *): The 3rd harmonic (57KHz) must be less than -40dB with respect to the input signal plus gain GENERAL Symbol Parameter Condition s Min Typ. Max Unit V DD Supply Voltage RDS Filter operational 4.5 5.5 V Without RDS filter capability 3.0 6.0 STANDARD I/O PORT PINS Symbol Parameter Conditions Min Typ Max Unit VIL Input Low Level Voltage - - 0.3xVDD V VIH Input High Level Voltage 0.7xV DD -- V VOL Output Low Level Voltage I=-5mA - - 0.5 V I=-1.6mA - - 0.3 V VOL Output Low Level Voltage on pins PH3, PH4, PH5 I=-5mA - - 1.0 V I=-1.6mA - - 0.4 V VOH Output High Level Voltage I=5mA 3.1 - - V I=1.6mA 3.4 - - V IL Input Leakage Current VSS<VPIN<VDD -10 - 10 µA IRPU Pull-up Equivalent Resistance VIN=VSS 40 - 250 KW Tohl Output H-L Fall Time Cl=50pF - 30 - ns Tolh Output L-H Rise Time Cl=50pF - 30 - ns A/D CONVERTER Symbol Parameter Condit ions Min Typ Max Unit Val Resolution fOSC = 8 MHz 8 bit Terr Total Error f OSC =8 MHz ± 2 LSB Tcon Conversion Time f OSC =8 MHz 16 µs Rva Analog Source Impedance - 10 K Ω RDS FILTER Symbol Parameter Condit ions Min Typ Max Unit fC Center Frequency 56.5 57 57.5 KHz BW 3dB Bandwidth V IN: 3mV rms 2.5 3 3.5 KHz G Gain @ 57 KHz 18 20 22 dB A Attenuation ∆f= ±4KHz f = 38KHz f = 67KHz 50 35 22 80 50 dB RI Input Impedance of MPX 100 160 200 K Ω RL Load Impedance of FILOUT 1 M Ω S/N Signal to Noise Ratio VIN = 3mVRMS 40 dB VIN MPX input signal f = 19KHz, T3 ≤ 40 dB *) 170 250 600 mVRMS VREF Reference VDD/2 V |
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