Adding...

Adding...

Adding...

Adding...

This report is a MEMS Process Review of the Bosch BMP180 digital barometric pressure sensor. The unique process technology incorporated into a MEMS device is th more...

This report is a MEMS Process Review of the Bosch BMP180 digital barometric pressure sensor. The unique process technology incorporated into a MEMS device is the focus of Chipworks' detailed MEMS Process Review reports. The MEMS structures are investigated in plan view and in cross section; the control ASIC is also covered.

This report is a circuit analysis of the analog portions of the control ASIC from the Bosch BMP180 digital pressure sensor. The BMP180 piezoresistive transducer more...

This report is a circuit analysis of the analog portions of the control ASIC from the Bosch BMP180 digital pressure sensor. The BMP180 piezoresistive transducer is a high precision (± 0.12 hPa @ ± 1 m) digital pressure sensor ideal for consumer applications, especially in mobile phones, PDAs, GPS navigation devices, and outdoor equipment. The BMP180 device employs a sensor element connected to an analog-to-digital convertor (ADC), a control unit with EEPROM to store calibration data, and a serial I2C interface for easy system integration with the microcontroller of a mobile device. This report covers the full analog circuitry found on the die, including the interface to the pressure sensor, the analog-to-digital conversion circuitry, reference generation, I/O circuits, internal oscillator, EEPROM for trimming, and calibration and local control logic. The larger digital portions of the die are unanalyzed.

Contact Us