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MXB7846 - 2.375V to 5.25V / 4-Wire Touch-Screen Controller with Internal Reference and Temperature Sensor

General Description

The MXB7846 is an industry-standard 4-wire touchscreen controller.

It contains a 12-bit sampling analogto-digital converter (ADC) with a synchronous serial interface and low on-resistance switches for driving resistive touch screens.

Key Features

  • ESD-Protected ADC Inputs ±15kV IEC 61000-4-2 Air-Gap Discharge ±8kV IEC 61000-4-2 Contact Discharge.
  • Pin Compatible with MXB7843.
  • +2.375V to +5.25V Single Supply.
  • Internal +2.5V Reference.
  • Direct Battery Measurement (0 to 6V).
  • On-Chip Temperature Measurement.
  • Touch-Pressure Measurement.
  • 4-Wire Touch-Screen Interface.
  • Ratiometric Conversion.
  • SPI™/QSPI™, 3-Wire Serial Interface.
  • Programmable 8-/12-B.

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Other Datasheets by Maxim Integrated (now Analog Devices)

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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19-2436; Rev 1; 5/04 2.375V to 5.25V, 4-Wire Touch-Screen Controller with Internal Reference and Temperature Sensor General Description The MXB7846 is an industry-standard 4-wire touchscreen controller. It contains a 12-bit sampling analogto-digital converter (ADC) with a synchronous serial interface and low on-resistance switches for driving resistive touch screens. The MXB7846 uses an internal +2.5V reference or an external reference. The MXB7846 can make absolute or ratiometric measurements. In addition, this device has an on-chip temperature sensor, a battery-monitoring channel, and has the ability to perform touch-pressure measurements without external components. The MXB7846 has one auxiliary ADC input.