SLDS204B October 2014 – June 2020 PGA300
PRODUCTION DATA.
The pressure signal path output conversion time is 128 µs, which equals an output rate of 7.8125 ksamples per second. The output of the decimation filter in the pressure signal path is a 16-bit signed value. Some example decimation output codes for given differential voltages at the input of the sigma-delta modulator are shown in Table 1.
SIGMA-DELTA MODULATOR DIFFERENTIAL INPUT VOLTAGE | 16-BIT NOISE-FREE DECIMATOR OUTPUT |
---|---|
–2.5 V | –32 768 (0x8000) |
–1.25 V | –16 384 (0xC000) |
0 V | 0 (0x0000) |
1.25 V | 16 383 (0x3FFF) |
2.5 V | 32 767 (0x7FFF) |