Datasheet

ADS1118

SBAS457D –OCTOBER 2010–REVISED OCTOBER 2013

www.ti.com

Bit 8 MODE: Device operating mode

This bit controls the ADS1118 operating mode.

0 = Continuous conversion mode

1 = Power-down and single-shot mode (default)

Bits[7:5] DR[2:0]: Data rate

These bits control the data rate setting.

000 = 8 SPS 100 = 128 SPS (default)

001 = 16 SPS 101 = 250 SPS

010 = 32 SPS 110 = 475 SPS

011 = 64 SPS 111 = 860 SPS

Bit 4 TS_MODE: Temperature sensor mode

This bit configures the ADC to convert temperature or input signals.

0 = ADC mode (default)

1 = Temperature sensor mode

Bit 3 PULL_UP_EN: Pull-up enable

This bit enables a weak pull-up resistor on the DOUT/DRDY pin. When enabled, a 400-kΩ resistor connects

the bus line to supply. When disabled, the DOUT/DRDY pin floats.

0 = Pull-up resistor disabled on DOUT/DRDY pin

1 = Pull-up resistor enabled on DOUT/DRDY pin (default)

Bits[2:1] NOP[1:0]: No operation

The NOP[1:0] bits control whether data are written to the Config register or not. In order for data to be written to

the Config register, the NOP[1:0] bits must be '01'. Any other value results in a NOP command. DIN can be

held high or low during SCLK pulses without data being written to the Config register.

00 = Invalid data, do not update the contents of the Config register

01 = Valid data, update the Config register (default)

10 = Invalid data, do not update the contents of the Config register

11 = Invalid data, do not update the contents of the Config register

Bit 0 Not used

Always reads '1'

Product Folder Links: ADS1118