User guide

MAX1027/MAX1029/MAX1031
10-Bit 300ksps ADCs with FIFO,
Temp Sensor, Internal Reference
16 ______________________________________________________________________________________
BIT NAME BIT FUNCTION
— 7 (MSB) Set to zero to select averaging register.
— 6 Set to zero to select averaging register.
— 5 Set to 1 to select averaging register.
AVGON 4 Set to 1 to turn averaging on. Set to zero to turn averaging off.
NAVG1 3 Configures the number of conversions for single channel scans.
NAVG0 2 Configures the number of conversions for single channel scans.
NSCAN1 1 Single channel scan count. (Scan mode 10 only.)
NSCAN0 0 (LSB) Single channel scan count. (Scan mode 10 only.)
Table 6. Averaging Register*
AVGON NAVG1 NAVG0 FUNCTION
0 x x Performs 1 conversion for each requested result.
1 0 0 Performs 4 conversions and returns the average for each requested result.
1 0 1 Performs 8 conversions and returns the average for each requested result.
1 1 0 Performs 16 conversions and returns the average for each requested result.
1 1 1 Performs 32 conversions and returns the average for each requested result.
NSCAN1 NSCAN0 FUNCTION (APPLIES ONLY IF SCAN MODE 10 IS SELECTED)
0 0 Scans channel N and returns 4 results.
0 1 Scans channel N and returns 8 results.
1 0 Scans channel N and returns 12 results.
1 1 Scans channel N and returns 16 results.
BIT NAME BIT FUNCTION
— 7 (MSB) Set to zero to select reset register.
— 6 Set to zero to select reset register.
— 5 Set to zero to select reset register.
— 4 Set to 1 to select reset register.
RESET 3 Set to zero to reset all registers. Set to 1 to clear the FIFO only.
x 2 Reserved. Don’t care.
x 1 Reserved. Don’t care.
x 0 (LSB) Reserved. Don’t care.
Table 7. Reset Register
*See below for bit details.