Details

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BUY WM8740SEDS/R https://www.utsource.net/itm/p/12608312.html

Parameter	Description	Min	Typ	Max	Unit
Supply Voltage (AVDD)	Analog supply voltage	2.7		5.25	V
Supply Voltage (DVDD)	Digital supply voltage	1.62		3.6	V
I2C Interface	Control interface		Yes
Sampling Rate	Supported sampling rates				kHz
SNR (Signal-to-Noise Ratio)	Signal-to-noise ratio at 1kHz		104		dB
THD+N (Total Harmonic Distortion + Noise)	At 1kHz, -1dBFS		-98		dB
Power Consumption	Active mode power consumption		6.5		mA
Package Type	IC package type		SSOP-24

Instructions for WM8740SEDS/R

1. Power Supply Connection:

   • Connect AVDD to the analog supply voltage and DVDD to the digital supply voltage as specified in the parameter table.
   • Ensure stable power supplies with appropriate decoupling capacitors close to the device.

2. I2C Configuration:

   • Configure the I2C interface using the provided control registers to set up the codec according to the application requirements.
   • Use standard I2C protocol for communication.

3. Sampling Rate Setup:

   • Set the desired sampling rate through the I2C interface within the supported range.
   • Verify that the master clock (MCLK) is properly configured relative to the selected sampling rate.

4. Audio Path Configuration:

   • Configure input/output paths, volume levels, and other audio settings via the I2C interface.
   • Ensure correct gain settings for optimal signal level.

5. Power Management:

   • Utilize power-down modes when not in use to minimize power consumption.
   • Follow recommended sequencing for power-up and power-down operations.

6. Layout Considerations:

   • Maintain a clean layout with short traces for analog signals to reduce noise.
   • Separate analog and digital grounds and connect them at a single point near the device.

7. Testing and Verification:

   • After setup, test the device for proper operation using known audio signals.
   • Monitor performance parameters like SNR and THD+N to ensure compliance with specifications.

(For reference only)