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Operating instructions

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Use an oscilloscope to verify that the conversion-start
signal is being strobed. Verify that SHDN is being dri-
ven high.
Problem: Unacceptable errors when measuring a
transducer.
Although most signal sources can be connected directly
to the MAX1132’s analog input, some high-impedance
signal sources may require an input buffer. Check for
settling errors by increasing the acquisition time: operate
the evaluation kit in external clock mode, 32 clocks per
conversion, with the QSPI clock at its slowest setting.
Problem: Measurements are erratic, unstable; poor
accuracy.
Check the reference voltage and input using a digital
voltmeter. Use an oscilloscope to check for noise.
When probing for noise, keep the oscilloscope ground
Evaluate: MAX1132/MAX1133
MAX1132 Evaluation Kit/Evaluation System
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Figure 1. MAX1132 EV Kit Schematic Diagram