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LSM303AGR Multiple questions about "Offset cancellation", "PD condition"

TomBr
Associate

Hello,

I am using a LSM303AGR sensor.

I am several questions about the datasheet. 
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Firstly, I don't understand why the linear acceleration sensitivity in table 3 Sensor characteristics has a value of 11.72 mg/LSB for +-16g in high resolution (HR) mode.
In HR mode : n = 12 bits. So +/-16g => range : 32g

Sensitivity = Range / 2^n = 32 / 4096 = 7.8125 mg/LSB 

In the datasheet you give 11.72mg/LSB... (48/2^12 = 11.72mg/LSB but why 24 * 2 ?)
My calculations are good with your result from Table 3 for each mode and for each full-scale EXCEPT for +/-16g. I think +/-24g has been used for you Table 3 but I don't know why...

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Secondly, in table 96, line "Set_FREQ", what do you mean by "after PD condition" ?

Thanks a lot

Tom

1 REPLY 1
TomBr
Associate

Anyone can help me ?