Details

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BUY PCM2902E https://www.utsource.net/itm/p/11302325.html
IC STEREO AUD CODEC W/USB 28SSOP

Parameter	Description	Min	Typ	Max	Unit
Power Supply Voltage (VDD)	Operating voltage range	2.7	-	3.6	V
Digital Interface	Supports I2S, Left-Justified, Right-Justified formats	-	-	-	-
Sample Rate	Supported sample rates	8	-	48	kHz
Signal-to-Noise Ratio (SNR)	Analog input/output SNR	-	90	-	dB
Total Harmonic Distortion + Noise (THD+N)	Analog input/output THD+N	-	0.01	-	%
Output Current (IOUT)	Maximum output current per channel	-	-	15	mA
Operating Temperature Range	Temperature range for operation	-40	-	85	°C
Standby Current	Current consumption in standby mode	-	0.5	-	μA
Active Current	Current consumption in active mode	-	25	-	mA

Instructions for Using PCM2902E

1. Power Supply:

   • Ensure the power supply voltage (VDD) is within the range of 2.7V to 3.6V.
   • Connect the power supply to the VDD pin and ground (GND) pin.

2. Digital Interface Configuration:

   • The PCM2902E supports I2S, Left-Justified, and Right-Justified digital audio formats.
   • Configure the digital interface using the control registers via the I2C or SPI interface.

3. Sample Rate Selection:

   • Set the desired sample rate (8kHz to 48kHz) through the control registers.
   • Ensure the master clock (MCLK) frequency is appropriate for the selected sample rate.

4. Analog Input/Output Connections:

   • Connect analog audio signals to the analog input pins (AINL, AINR).
   • Connect the analog output pins (AOUTL, AOUTR) to your audio amplifier or speaker.

5. Standby Mode:

   • To enter standby mode, set the appropriate bit in the control register.
   • In standby mode, the device consumes approximately 0.5μA of current.

6. Active Mode:

   • To activate the device, clear the standby bit in the control register.
   • In active mode, the device consumes approximately 25mA of current.

7. Temperature Considerations:

   • Ensure the operating temperature is within the range of -40°C to 85°C.
   • Avoid exposing the device to temperatures outside this range to prevent damage.

8. Signal-to-Noise Ratio (SNR):

   • The device provides a typical SNR of 90dB for both analog input and output.

9. Total Harmonic Distortion + Noise (THD+N):

   • The typical THD+N is 0.01% for both analog input and output.

10. Output Current:

    • The maximum output current per channel is 15mA. Ensure that the load does not exceed this limit to avoid damage.

For detailed information and specific register settings, refer to the PCM2902E datasheet and application notes provided by the manufacturer.

(For reference only)