MC34940 Freescale Semiconductor, MC34940 Datasheet
MC34940
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MC34940 Summary of contents
Page 1
... Liquid Level Sensing ORDERING INFORMATION Temperature Device Name MC34940EG/ 90°C © Freescale Semiconductor, Inc., 2006. All rights reserved. Drawing Package Range 98ASB42564B SOICW-24 Document order number: MC34940 Rev 2.0, 2/2006 34940 ELECTRONIC FIELD IMAGING DEVICE 24 LEAD (PB-FREE) SOICW 98ASB42344B DGND N/C N/C E7 SHIELDEN ...
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... ZAP Charge Device Model (CDM), Robotic (C Thermal Ratings Storage Temperature Operating Ambient Temperature Operating Junction Temperature Thermal Resistance Junction-to-Ambient (1) Junction-to-Case (2) Junction-to-Board (3) Soldering Temperature(4) MC34940 2 3 CONTROL LOGIC 2.8 kΩ 2.8 kΩ MUX 22 kΩ (Nominal) OUT MUX Ω 700 IN Ω ...
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... VON – V 0.3 THL V – THH V – HYS -5.0 DET – 3.6 REC V -3.3 RECOFF Typ Max Unit 7.0 8.0 % – 3.0 dB -20 – V – 8.0 – 9 – 5.0 – – – 0 0.06 – µA – 50 – 5.0 50 – kΩ 4.0 4 -3.0 -2.7 V MC34940 3 ...
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... Shield Driver Maximum Harmonic level below Fundamental 10 pF ≤ C ≤ 500 pF LOAD Shield Driver Gain Bandwidth Product Measured at 120 kHz MC34940 4 ≤ 0°C ≤ T ≤ 90°C, GND = 0 V unless otherwise noted. Typical SUP A = 25°C under nominal conditions unless otherwise noted. ...
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... Acrylic Glass Nylon Plastic Polyester Film Flexible Vinyl Film Air d k Water Ice Automotive Oil Low Pass Filter Low Pass Filter Detected Signal Detected Signal Level Decreases Level Decreases with Increasing with Increasing Capacitance Capacitance Thickness (mil) k 84.5 2.4-4.5 74.5 7.5 68 3.0-5.0 10 3.2 9 2.8-4 3.2 - 2.1 MC34940 5 ...
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... Figure 5 Output Voltage vs. Capacitance at 3 Discrete Frequencies MC34940 6 at ROSC respectively wider capacitance range is needed, simply change the ROSC resistor value to 82k to have the signal generator operate at 60 kHz which will extend the capacitance range to 150pF as seen on figure also shows that one can achieve higher sensitivity at lower capacitances by setting the ROSC resistor value to 20k ...
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... A 47µF capacitor is connected to this pin to filter the internal digital regulated supply Connected to the ground return of the AGND analog circuitry Connects to cable shields to cancel cable capacitance. Main IC ground GND Connect to circuit ground TEST Electrode pins E1–E7 39k 10nF Field Electrodes (E1 through E7) MC34940 7 ...
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... MC34940 8 PACKAGING DIMENSIONS EG SUFFIX 24-TERMINAL SOICW 98ASB42344B ISSUE F Sensors Freescale Semiconductor ...
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... Freescale Semiconductor Literature Distribution Center P.O. Box 5405 Denver, Colorado 80217 1-800-441-2447 or 303-675-2140 Fax: 303-675-2150 LDCForFreescaleSemiconductor@hibbertgroup.com MC34940 Rev 2.0 2/2006 RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts. For further information, see http://www.freescale.com Freescale sales representative. For information on Freescale’ ...