A single-ended input channel consists of one input. The output is the difference between the input and AGND (common). 

J8 jumper must be installed for single-ended mode of operation. This also configures the STX104 card for sixteen analog input channels. 

The primary path of amplifier bias currents is the AGND (or common) and since the source is tied to AGND amplifier bias currents flow through the sensor to AGND. Amplifier bias currents are typically on the order of tens of nano-amps. 

Source resistance Rsource along with cable and input parasitic capacitances must be taken into considered to determine minimum settling time. More details can be found here. 

The input ranges for single-ended inputs.

NOTE: Analog Configuration Register (ACFG) 

• More analog input channels available
• Less wiring and lower cost

Disadvantages

• Since all inputs are referred to AGND (i.e. common) the possibility exists for ground loops or voltage drops along common connections which will add to noise or measurement errors.

Connectivity