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MC34940 Scheda tecnica(PDF) 3 Page - Freescale Semiconductor, Inc |
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MC34940 Scheda tecnica(HTML) 3 Page - Freescale Semiconductor, Inc |
3 / 9 page MC34940 Sensors Freescale Semiconductor 3 Notes 1. Junction temperature is a function of on-chip power dissipation, package thermal resistance, mounting site (board) temperature, ambient temperature, air flow, power dissipation of other components on the board, and board thermal resistance. In accordance with SEMI G38- 87 and JEDEC JESD51-2 with the single layer board horizontal. 2. Indicates the average thermal resistance between the die and the case top surface as measured by the cold plate method (MILSPEC 883 Method 1012.1) with the cold plate temperature used for the case temperature. 3. Thermal resistance between the die and the printed circuit board per JEDEC JESD51-8. Board temperature is measured on the top surface of the board near the package. 4. Terminal soldering temperature limit is for 10 seconds maximum duration. The device is not designed for immersion soldering. Exceeding these limits may cause malfunction or permanent damage to the device 5. Verified by design and characterization. Not tested in production. 6. Current into grounded terminal under test = 1.0 mA. Table 2. STATIC ELECTRICAL CHARACTERISTICS Characteristics noted under conditions 5.5 V ≤ VSUP ≤ 18 V, 0°C ≤ TA ≤ 90°C, GND = 0 V unless otherwise noted. Typical values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted. Characteristic Symbol Min Typ Max Unit SUPPLY (VPWR) Supply Voltage VPWR 9.0 12 18 V IDD (VPWR = 14V) (Quiescent supply current measured over temperature. Assumes that no external devices connected to internal voltage regulators) IDD 6.0 7.0 8.0 mA ELECTRODE SIGNALS (E1–E7) Total Variance Between Electrode Measurements (5) All CLOAD = 15 pF ELVVAR – – 3.0 % Electrode Maximum Harmonic Level Below Fundamental (5) 5.0 pF ≤ CLOAD ≤ 150 pF ELHARM – -20 – dB Electrode Transmit Output Range 5.0 pF ≤ CLOAD ≤ 150 pF ELTXV 1.0 – 8.0 V Receive Input Voltage Range RXV 0 – 9.0 V Grounding Switch on Voltage(6) ISW = 1.0 mA SWVON – – 5.0 V LOGIC I/O (C, B, A) CMOS Logic Input Low Threshold VTHL 0.3 – – VCC Logic Input High Threshold VTHH – – 0.7 VCC Voltage Hysteresis VHYS – 0.06 – VCC Input Current VIN = VCC VIN = 0 V IIN 10 -5.0 – – 50 5.0 µA SIGNAL DETECTOR (LPCAP) Detector Output Resistance DETRO – 50 – k Ω LPCAP to LEVEL Gain AREC 3.6 4.0 4.4 AV LPCAP to LEVEL Offset VRECOFF -3.3 -3.0 -2.7 V |
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