ZHCSIP5 August 2018 PGA305
PRODUCTION DATA.
The pressure signal path internal conversion time is 128 µs.
The output of the decimation filter in the pressure signal path is a 24-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 (V) | 24-BIT NOISE-FREE DECIMATOR OUTPUT |
---|---|
–2.5 | –8 388 608 (0x800000) |
–1.25 | –4 194 304 (0xC00000) |
0 | 0 (0x000000) |
1.25 | 4 194 303 (0x3FFFFF) |
2.5 | 8 388 607 (0x7FFFFF) |