mc33941 Freescale Semiconductor, Inc, mc33941 Datasheet
mc33941
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mc33941 Summary of contents
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... The MC33941 is intended for cost-sensitive applications where non-contact sensing of objects is desired. When connected to external electrodes, an electric field is created. The MC33941 detects objects in this electric field. The IC generates a low-frequency sine wave, which is adjustable by using an external resistor and is optimized for 120 kHz. The sine wave has very low harmonic content to reduce harmonic interference ...
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... A,B,C E1-E7 VCCCAP VDDCAP VPWR AGND GND MC33941 2 3 CONTROL LOGIC 2.8 kΩ 2.8 kΩ MUX 22 kΩ (Nominal) OUT MUX 700 Ω IN Ω 700 V CC REG V DD REG Figure 1. Simplified Functional Block Diagram ROSC OSC SHIELDEN 150 Ω SHIELD RECT LPCAP LPF GAIN AND ...
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... Sensors Freescale Semiconductor = 1500 W) = 4.0pF) ZAP Symbol Value Unit V 40 PWRPK V DBLBAT 26.5 V ESD ±2000 ±200 ±1200 T -55 to 150 °C STG 110 ° 150 °C J °C θ 0.2 JC θ R 3.0 θ JB MC33941 ...
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... LPCAP to LEVEL Gain LPCAP to LEVEL Offset Notes 5. Verified by design and characterization. Not tested in production. 6. Current into grounded terminal under test = 1.0 mA. MC33941 4 ≤ 0°C ≤ T ≤ 110°C, GND = 0 V unless otherwise noted. Typical SUP A = 25°C under nominal conditions unless otherwise noted. ...
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... A Symbol f STAB f OSC OSCH ARM SD HARM SD GBW Min Typ Max Unit – – kHz – 120 – – 240 – – 60 – dB – – -20 – – -60 dB – -20 – MHz – 4.5 – MC33941 5 ...
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... F/m) Figure 3. Capacitor Model MC33941 6 PRINCIPLE OF OPERATION formed between the driving electrode and the object, each forming a “plate” that holds the electric charge. The voltage ...
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... If faster response time is required a 1nF capacitor can be used and it will have response times < 200uS. Please note that reducing the LP_CAP capacitor value increases noise accordingly 100 120 Capacitance (pF) Figure 4. The 120 kHz 240 kHz 60 kHz 140 160 MC33941 7 ...
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... VCCCAP SHIELD 17-23 +5V MC33941 ROSC VCCCAP 47uF VDDCAP 47uF LPCAP LEVEL SHIELDEN +12V VPWR E7 TEST SHIELD AGND GND Figure 6. Simplified Application Diagram Definition Connected to the ground return DGND These pins should be left open. ...
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... Sensors Freescale Semiconductor PACKAGE DIMENSIONS EG SUFFIX CASE 751E-04 ISSUE F PAGE MC33941 9 ...
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... MC33941 10 PACKAGE DIMENSIONS EG SUFFIX CASE 751E-04 ISSUE F PAGE 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 MC33941 Rev. 3 11/2006 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’ ...