MAX11253 Datasheet, PDF (49/51 Pages) Maxim Integrated Products – Longer Battery Life for Portable Applications

MAX11253
16-Bit, 6-Channel, 64ksps, 6.2nV/√Hz PGA,
Delta-Sigma ADC with SPI Interface
DATA[5:0]: Data Registers (Read Only)
Default = 0x0000
BIT NAME
D15
D14
D13
…
D3
D2
D1
D0
DEFAULT
0
0
0
…
0
0
0
0
Each data register holds the conversion result for the corresponding channel. DATA0 is the data register for channel 0, DATA1 is
for channel 1, etc.
Each data register is a 16-bit read-only register. Any attempt to write data to this location will have no effect. The data read from these
registers is clocked out MSB first. The result is stored in a format according to the FORMAT bit in the CTRL1 register. The data format
while in unipolar mode is always offset binary. In offset binary format the most negative value is 0x0000, the midscale value is 0x8000
and the most positive value is 0xFFFF. In bipolar mode if the FORMAT bit = ‘1’ then the data format is offset binary. If the FORMAT bit
= ‘0’, then the data format is two’s complement. In two’s complement the negative full-scale value is 0x8000, the midscale is 0x0000
and the positive full scale is 0x7FFF. Any input exceeding the available input range is limited to the minimum or maximum data value.
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