MC33794DH
MC33794DH Datasheet
Document order number MC33794/D Rev 04/2004
| Part | Datasheet |
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MC33794DH |
MC33794DH (pdf) |
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| Freescale Semiconductor, Inc. MOTOROLA SEMICONDUCTOR TECHNICAL DATA Advance Information Electric Field Imaging Device The 33794 is intended for applications where noncontact sensing of objects is desired. When connected to external electrodes, an electric field is created. The 33794 is intended for use in detecting objects in this electric field. The IC generates a low-frequency sine wave. The frequency 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. The 33794 also contains support circuits for a microcontroller unit MCU to allow the construction of a two-chip E-field system. 33794 ELECTRIC FIELD IMAGING DEVICE Features • Supports up to 9 Electrodes and 2 References • Shield Driver for Driving Remote Electrodes Through Coaxial Cables • V Regulator to Power External Circuit • ISO-9141 Physical Layer Interface • Lamp Driver Output • Watchdog and Power-ON Reset Timer • Critical Internal Nodes Scaled and Selectable for Measurement • High-Purity Sine Wave Generator Tunable with External Resistor DH SUFFIX CASE 1291-01 44-LEAD HSOP DWB SUFFIX CASE 1390-01 54-LEAD SOICW-EP ORDERING INFORMATION Device Temperature Range TA Package MC33794DH/R2 44 HSOP -40°C to 85°C MC33794DWB/R2 54 SOICW-EP Freescale Semiconductor, Inc... Analog_IN ISO_Tx ISO_Rx Watchdog Reset Electrode Select Shield Disable GPx 33794 Simplified Application Diagram Simplified Application Diagram VPWR 33794 VPWR LAMP_OUT LAMP_SENSE VCC LP_CAP LEVEL VDD _MON PWR_MON LAMP_MON ISO_IN ISO_OUT WD_IN RST A, B, C, D DIS_SHIELD LAMP_CTRL ISO-9141 SIGNAL VDD REF_A REF_B E9 SHIELD R_OSC LAMP_GND TEST AGND ISO-9141 Bus Monitor Opt Field Electrodes E1 through E9 This document contains certain information on a new product. Specifications and information herein are subject to change without notice. Motorola, Inc. 2004 For More Information On This Product, Go to: Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. A,B,C,D TEST E1 E9 + REF_A VDD VCC RST WD_IN |
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