Details

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BUY AD620AN https://www.utsource.net/itm/p/12606059.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	-	2.3	5	36	V
Quiescent Current	IQ	VCC = 5V, TA = 25°C	-	1.4	-	mA
Input Offset Voltage	VOS	VCC = 5V, TA = 25°C	-	50	100	μV
Input Bias Current	IB	VCC = 5V, TA = 25°C	-	1	2	nA
Input Voltage Noise	en	VCC = 5V, TA = 25°C, f = 1 kHz	-	0.9	-	nV/√Hz
Gain Bandwidth Product	GBW	VCC = 5V, TA = 25°C	-	1.2	-	MHz
Slew Rate	SR	VCC = 5V, TA = 25°C	-	0.5	-	V/μs
Common Mode Rejection Ratio	CMRR	VCC = 5V, TA = 25°C, G = 1000	-	80	110	dB
Power Supply Rejection Ratio	PSRR	VCC = 5V, TA = 25°C	-	80	110	dB
Output Voltage Swing	VOUT	VCC = 5V, TA = 25°C, RL = 2kΩ	0.1	-	4.9	V

Instructions for Using AD620AN

1. Power Supply:

   • Ensure the supply voltage (V_CC) is within the range of 2.3V to 36V.
   • Connect the power supply to the V_CC and GND pins.

2. Input Connections:

   • Connect the differential input signals to the IN+ and IN- pins.
   • Ensure the input bias current is minimized by using high impedance sources.

3. Gain Setting:

   • The gain is set using an external resistor (R_G) connected between the RG and REF pins.
   • The gain (G) can be calculated using the formula: ( G = 1 + frac{49.4kOmega} ).
   • For example, to achieve a gain of 1000, use ( R_G = frac{49.4kOmega}{999} approx 49.4Omega ).

4. Output Connections:

   • Connect the output to the desired load resistance (R_L).
   • Ensure the output voltage swing is within the limits specified for the given supply voltage and load resistance.

5. Common Mode Rejection:

   • To maximize common mode rejection, ensure the input signals are balanced and the common mode voltage is within the operational range.

6. Temperature Considerations:

   • The device is designed to operate at temperatures from -40°C to +85°C.
   • Monitor the temperature to ensure it remains within these limits to maintain performance specifications.

7. Noise Reduction:

   • Use proper grounding and shielding techniques to minimize noise.
   • Place the AD620AN close to the signal source to reduce the length of input leads and minimize noise pickup.

8. Stability:

   • Ensure the circuit is stable by using appropriate capacitors and resistors as recommended in the datasheet.
   • Avoid overdriving the input to prevent instability and potential damage to the device.

By following these instructions, you can ensure optimal performance and reliability of the AD620AN in your application.

(For reference only)