Details

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BUY ADA4941-1YRZ-R7 https://www.utsource.net/itm/p/12357401.html

Parameter	Min	Typ	Max	Unit	Description
Supply Voltage (VDD)	2.7		5.5	V	Operating supply voltage range
Input Voltage Range			VDD-1.2	V	Maximum input voltage range
Output Voltage Swing		VDD-1.8	VDD-0.4	V	Output voltage swing relative to supply voltage
Bandwidth (-3 dB)		650		MHz	Small-signal bandwidth
Slew Rate		1200		V/μs	Slew rate
Input Bias Current		0.9		nA	Typical input bias current
Input Offset Voltage	-1		1	mV	Input offset voltage
CMRR		90		dB	Common-mode rejection ratio
PSRR		90		dB	Power supply rejection ratio
Noise, e (1 kHz)		4.5		nV/√Hz	Input voltage noise density at 1 kHz
Noise, i (1 kHz)		0.5		fA/√Hz	Input current noise density at 1 kHz
Quiescent Current		4.5		mA	Supply current per amplifier

Instructions for ADA4941-1YRZ-R7

1. Power Supply:

   • Ensure the supply voltage (VDD) is within the specified range of 2.7V to 5.5V.
   • Use decoupling capacitors close to the power pins to minimize noise and transient effects.

2. Input Signal:

   • The input signal should not exceed the maximum input voltage range (VDD - 1.2V).
   • For optimal performance, ensure the input signal is within the common-mode voltage range.

3. Output Configuration:

   • The output voltage swing can reach from near ground up to VDD - 0.4V.
   • Use appropriate load resistances to match your application requirements.

4. Signal Bandwidth:

   • The amplifier provides a small-signal bandwidth of 650 MHz.
   • Ensure that the external components do not limit this bandwidth.

5. Slew Rate Consideration:

   • With a slew rate of 1200 V/μs, the device can handle fast transients in the signal without significant distortion.

6. Noise Management:

   • Be mindful of the input voltage and current noise densities when designing low-noise applications.
   • Place the amplifier in a shielded environment if necessary to avoid external noise interference.

7. Biasing and Offset:

   • The typical input bias current is 0.9 nA; design circuits with this in mind to avoid loading issues.
   • Account for the input offset voltage in precision applications by using trimming techniques or calibration.

8. Common Mode Rejection Ratio (CMRR):

   • A CMRR of 90 dB ensures that common-mode signals are effectively rejected.
   • This parameter is crucial for differential signal processing applications.

9. Power Supply Rejection Ratio (PSRR):

   • The PSRR of 90 dB indicates high immunity to power supply variations.
   • Maintain clean power supplies to leverage this characteristic fully.

10. Quiescent Current:

    • The quiescent current is 4.5 mA, which is important for power consumption considerations in battery-operated devices.

Ensure all connections are secure and follow best practices for PCB layout to achieve optimal performance.

(For reference only)