Details

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BUY PCM5121PWR https://www.utsource.net/itm/p/12606336.html

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Supply Voltage	VDD	2.7	3.3	5.5	V
Analog Input Voltage	VIN	-0.3	0	VDD+0.3	V
Digital Power Supply	VDDIO	1.62	1.8	3.6	V
I2C Clock Frequency	SCL	10	400	1000	kHz
I2S Clock Frequency	BCLK	2.8	12.288	24.576	MHz
Signal-to-Noise Ratio	SNR	105	110	-	dB	A-weighted
Total Harmonic Distortion	THD+N	-95	-100	-	dB	1kHz, 1Vrms out
Output Current (Max)	IOUT	-	20	30	mA	Continuous
Operating Temperature	Toper	-40	25	85	掳C
Storage Temperature	Tstg	-65	-	150	掳C

Instructions for Using the PCM5121PWR

1. Power Supply Connections:

   • Connect the VDD pin to a stable power supply within the range of 2.7V to 5.5V.
   • Connect the VDDIO pin to a digital power supply within the range of 1.62V to 3.6V.
   • Ensure that both power supplies have appropriate decoupling capacitors (e.g., 0.1渭F and 10渭F) placed close to the device.

2. Analog Input Configuration:

   • Connect the analog input signals to the VIN pins. The input voltage should not exceed the supply voltage plus 0.3V or go below -0.3V.
   • Use appropriate input coupling capacitors if the input signal is AC-coupled.

3. Digital Interface Configuration:

   • Connect the I2C interface (SCL, SDA) to the microcontroller or other I2C master device.
   • Set the I2C clock frequency (SCL) between 10kHz and 1000kHz.
   • Configure the I2S interface (BCLK, LRCLK, DIN) according to the desired audio data format and sample rate.

4. Output Configuration:

   • Connect the output pins to the load or amplifier. The maximum continuous output current is 30mA.
   • Use appropriate output coupling capacitors if the load is DC-coupled.

5. Temperature Considerations:

   • Ensure that the operating temperature is within the range of -40掳C to 85掳C.
   • Store the device in an environment with temperatures between -65掳C and 150掳C.

6. Signal-to-Noise Ratio and Distortion:

   • The device has a high signal-to-noise ratio (SNR) of up to 110dB A-weighted.
   • The total harmonic distortion plus noise (THD+N) is typically -100dB at 1kHz and 1Vrms output.

7. Programming and Configuration:

   • Use the I2C interface to configure the device settings such as sample rate, gain, and other parameters.
   • Refer to the device datasheet for specific register addresses and bit configurations.

8. Testing and Troubleshooting:

   • Verify the power supply voltages and connections.
   • Check the I2C and I2S signals using a logic analyzer or oscilloscope.
   • Measure the output signal to ensure it meets the expected levels and quality.

For detailed information, refer to the PCM5121PWR datasheet and application notes provided by the manufacturer.

(For reference only)