Datasheet

Single Ended Inputs
5-2
5.1 Single Ended Inputs
Single ended analog input signals can be applied to screw jack terminals one
or three, referenced to terminal two. While jumpers W1–W9 are in their default
positions (pins 1-2), 2.5 V is applied to the noninverting terminals of U1
through U4. A 5 Vp-p signal, from 0-5 V, applied to terminals 1 or 3 will provide
an inverted 0-5 V signal to the corresponding output pin on J7. Table 5-1
shows the mapping of J1 through J5 to J7.
Table 5-1.Analog Signal Mapping J2-J5 and J1 to J7
Screw Terminal Signal Input J1 Signal Input Signal Output
J5.3 (ADC1) J1.16 (DAC8) J7.2
J5.1 (ADC2) J1.14 (DAC7) J7.4
J4.3 (ADC3) J1.12 (DAC6) J7.6
J4.1 (ADC4) J1.10 (DAC5) J7.8
J3.3 (ADC5) J1.8 (DAC4) J7.10
J3.1 (ADC6) J1.6 (DAC3) J7.12
J2.3 (ADC7) J1.4 (DAC2) J7.14
J2.1 (ADC8) J1.2 (DAC1) J7.16
5.2 Differential Inputs
Differential analog input signals can be applied between screw jack terminals
one and three. The output in this case would be a differential signal taken
between pins 2 and 4, 6 and 8, 10 and 12 or 14 and 16 of J7, with pins 2, 4,
6, and 8 assumed to be the positive input.
Figure 5-1 provides details of the default signal conditioning board
configuration. Components noted with an asterisk in the schematic are not
installed. These components are place holders for 0805 size surface mount
resistors or capacitors. All shunt jumpers are installed in position 1-2,
providing a unity gain inverting buffer configuration.