Details

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BUY AD594AQ https://www.utsource.net/itm/p/12610307.html

Parameter	Symbol	Min	Typical	Max	Units	Conditions
Supply Voltage	Vcc	4.5		30	V
Supply Current	Icc		1.2		mA	Vcc = 5V, 25°C
Output Current	Iout			20	mA
Temperature Range		-40		125	°C
Accuracy			±1		%	25°C, Vcc = 5V
Linearity			±0.1		%	25°C, Vcc = 5V
Hysteresis			0.02		%	25°C, Vcc = 5V
Thermal Coefficient	α		0.085		%/°C	25°C to 125°C, Vcc = 5V
Zero Offset	Vos		5		mV	25°C, Vcc = 5V
Span	Span		10		mV/°C	25°C, Vcc = 5V
Response Time	τ		5		s	25°C, Vcc = 5V
Operating Humidity		0		95	% RH	Non-condensing
Storage Temperature		-65		150	°C

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the specified range of 4.5V to 30V.
   • The typical supply current (Icc) is 1.2mA at 5V.

2. Temperature Measurement:

   • The AD594AQ provides a linear output current proportional to the temperature.
   • The output current can be converted to a voltage using a precision resistor.
   • The span of the output is typically 10mV/°C.

3. Calibration:

   • Calibrate the device at 25°C to ensure accuracy.
   • Adjust the zero offset (Vos) and span as needed to match the desired temperature range.

4. Environmental Considerations:

   • Operate the device within the specified temperature range of -40°C to 125°C.
   • Store the device within the storage temperature range of -65°C to 150°C.
   • Ensure the operating humidity does not exceed 95% RH (non-condensing).

5. Response Time:

   • The response time (τ) is approximately 5 seconds at 25°C and 5V supply.

6. Thermal Coefficient:

   • The thermal coefficient (α) is 0.085%/°C from 25°C to 125°C, which affects the accuracy over the temperature range.

7. Hysteresis:

   • The hysteresis is 0.02%, which should be considered in applications where temperature cycling is frequent.

8. Linearity:

   • The linearity is ±0.1%, ensuring a consistent and reliable output over the temperature range.

9. Mounting:

   • Mount the device in a location where it is not subject to mechanical stress or vibration that could affect its performance.

10. Handling:

    • Handle the device with care to avoid damage to the pins and internal components.
    • Follow standard ESD (Electrostatic Discharge) precautions when handling the device.

By following these instructions, you can ensure optimal performance and reliability of the AD594AQ temperature sensor.

(For reference only)