User Manual

Functional Description (Continued)

Note 1: R2

49.5 R1

Note 2: Switches are LMC13334 CMOS analog switches.

Note 3: The 9 resistors used in the auto-zero section can be

5% tolerance.

FIGURE 17. Gain of 100 Differential Transducer Preamp

TL/H/5671–27

FIGURE 18. Microprocessor Interface Circuitry for Differential Preamp