Details

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BUY LM335AZ https://www.utsource.net/itm/p/12606569.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Operating Temperature		Junction	-40		125	°C
Supply Voltage	VCC	Continuous operation	2.7		30	V
Output Current	IO	Continuous	0.1	1	10	mA
Quiescent Current	IQ	VCC = 5V	10	60	100	μA
Temperature Coefficient	αV	25°C to 125°C	-10		+10	ppm/°C
Line Regulation	ΔVO/ΔVCC	VCC = 5V to 30V	0.1		1	mV/V
Load Regulation	ΔVO/ΔIL	IL = 0.1mA to 10mA	0.1		1	mV/mA
Thermal Resistance	θJ-A	TO-92 package		150		°C/W
Output Voltage	VO	TJ = 25°C	2.98	2.985	3.015	V

Instructions for Use:

1. Supply Voltage:

   • The LM335AZ operates with a supply voltage ranging from 2.7V to 30V. Ensure the supply voltage is within this range to avoid damage to the device.

2. Output Current:

   • The output current should be between 0.1mA and 10mA for optimal performance. Exceeding these limits can lead to inaccurate readings or damage the device.

3. Quiescent Current:

   • The quiescent current is typically around 60μA at a supply voltage of 5V. This value can vary between 10μA and 100μA depending on the operating conditions.

4. Temperature Coefficient:

   • The temperature coefficient is ±10 ppm/°C over the temperature range from 25°C to 125°C. This ensures that the output voltage changes linearly with temperature.

5. Line Regulation:

   • The line regulation is between 0.1mV/V and 1mV/V, indicating how much the output voltage changes with variations in supply voltage.

6. Load Regulation:

   • The load regulation is between 0.1mV/mA and 1mV/mA, indicating how much the output voltage changes with variations in load current.

7. Thermal Resistance:

   • The thermal resistance (θ_J-A) of the TO-92 package is 150°C/W. Proper heat sinking may be required if the device is expected to dissipate significant power.

8. Output Voltage:

   • At a junction temperature of 25°C, the output voltage is nominally 2.985V, with a tolerance of ±0.015V.

Example Circuit:

To use the LM335AZ as a temperature sensor, connect it in a simple circuit where the output voltage is proportional to the absolute temperature (in Kelvin). A typical configuration involves:

• Connecting the positive terminal (pin 1) to the supply voltage (V_CC).
• Connecting the negative terminal (pin 3) to ground.
• Connecting the output terminal (pin 2) to a resistor to ground, which forms a current-to-voltage converter.

The output voltage (V_O) can be calculated using the formula: [ V_ = 2.985V + 10mV times (T - 298.15K) ] where ( T ) is the temperature in Kelvin.

(For reference only)