LM35: Application issues.

Reed

Expert 1910 points

Part Number: LM35

Tool/software:

Hi Team,

Using LM35DZ,

As shown in the figure below, what is the function of a resistor?
Adding this resistor to the output is prone to interference.
Can we remove this resistor and directly connect it to a 1uF capacitor?

11 months ago

0 Reed 11 months ago

Expert 1910 points

Hi Team,

Do you have any feedback?

0 Simon Rojas Avila 11 months ago in reply to Reed

TI__Expert 7170 points

Hi Reed,

I apologize for the delay here. Removing the 75 ohm resistor is ok as long as you add a series R as shown in figure 14 to shift the pole of the circuit since the device can only handle a max capacitive load 50pF. Otherwise you run the risk of having an unstable/oscillating output. Note that the typical output impedance of the device is 0.5 ohms.

Best regards,

Simon Rojas

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LM35: Application issues.