Difference between LPS22HH and LPS22HB

dcexpert

Difference between LPS22HH and LPS22HB [Copy link]

 

On the X-NUCLEO-IKS01A3, there is a pressure sensor LPS22HH. On the earlier SensorTile development board, LPS22HB was used. From the name, they are similar, indicating that the functions are also similar, and LPS22HH should be an upgraded model of LPS22HB. After a preliminary comparison of the data sheets of the two sensors, their main differences are listed.

Main differences between LPS22HH and LPS22HB

	LPS22HH	LPS22HB
interface	I2C/SPI/ I3C	I2C/SPI
Lowest power consumption	3uA	4uA
Absolute accuracy	±0.5hPa	±0.1hPa/±1hPa
Relative accuracy	±0.025hPa	±0.1hPa
ODR	1-200Hz	1-75Hz

dcexpert

What is more special and important is that the LPS22HH sensor supports the latest I3C standard, which is an upgrade of the traditional I2C.

I3C Command Table

dcexpert

One more difference is that the identification codes of the two chips are also different (register 0x0F), LPS22HH is 0xB3, and LPS22HB is 0xB1.

yujie2510

The noise levels of these two barometers are also different!

dcexpert

yujie2510 posted on 2019-12-25 17:31 The noise levels of these two barometers are also different!

I didn't notice this, thanks for reminding me.