Details

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BUY MCP3421A0T-E/CH https://www.utsource.net/itm/p/12605893.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VDD	Operating	2.7		5.5	V
Supply Current	IDD			100		渭A
Differential Input Range	VIN	Continuous	-	卤1.28	-	V
Conversion Time (18-bit)	tconv	1 SPS		800		ms
Output Data Rate	ODR		1		3.75	SPS
Input Impedance	Zin	Differential		1		G惟
Common Mode Rejection Ratio	CMRR			90		dB
Signal to Noise Ratio	SNR	18-bit, PGA=1		106		dB
Temperature Range	Toper	Operating	-40		85	掳C

Instructions for MCP3421A0T-E/CH:

1. Power Supply:

   • Ensure the supply voltage is within the range of 2.7V to 5.5V.
   • The device operates with a typical supply current of 100渭A.

2. Input Configuration:

   • Connect differential input signals within the range of 卤1.28V for accurate measurements.
   • Be mindful of the high input impedance (1G惟) which can affect signal sources with higher output impedances.

3. Conversion Settings:

   • Set the conversion time based on the desired resolution; for 18-bit resolution, the conversion time is approximately 800ms at 1 sample per second (SPS).
   • Choose the output data rate between 1 SPS and 3.75 SPS depending on application requirements.

4. Signal Quality:

   • To achieve optimal signal-to-noise ratio (SNR) of 106dB at 18-bit resolution, ensure minimal noise in the power supply and signal lines.
   • Utilize the common mode rejection ratio (CMRR) of 90dB to mitigate interference from common-mode noise.

5. Environmental Considerations:

   • Operate the device within the temperature range of -40掳C to +85掳C to maintain performance specifications.

6. Programming Interface:

   • Communicate with the device using I2C protocol.
   • Refer to the datasheet for specific commands to configure settings such as gain, resolution, and operating modes.

For detailed programming instructions and additional features, refer to the full datasheet provided by Microchip Technology.

(For reference only)