Datasheet

2-1

Analog Interface

The ADS8342 modular EVM easily interfaces to multiple analog sources.

Samtec part numbers SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P

provide a convenient 10-pin dual row header/socket combination at J1.

Connector J1 and jumpers W1 through W4 provide access to the ADS8342

analog input pins. Analog signals applied to J1 are fed directly to the data

converter when shunts are placed on pins 1-2 of W1–W4.

When using the onboard AFE, a single analog input can be applied to any of

the four input channels by moving the shunt on W1–W4 to cover pins 2-3. The

SMA connector labeled INPUT applies the signal to be converted to the AFE.

The AFE consists of a single channel OPA726 op amp at U2. Gain and filter

configurations can be modified as necessary by using the pin sockets installed

at resistor and capacitor locations R9–R12, C21 and C27.

Chapter 2