LM134, LM234, LM334

SNVS746E – MARCH 2000 – REVISED MAY 2013

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Typical Applications

*Select R3 = VREF/583μA. VREF may be any stable positive voltage ≥ 2V

Trim R3 to calibrate

Figure 16. Ground Referred Fahrenheit Thermometer

Figure 17. Terminating Remote Sensor for Voltage Output

*Output impedance of the LM134 at the “R” pin is approximately

where R2 is the equivalent external resistance connected from the V

− pin to ground. This negative resistance can be

reduced by a factor of 5 or more by inserting an equivalent resistor R3 = (R2/16) in series with the output.

Figure 18. Low Output Impedance Thermometer

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