The PCM5102A is a high-performance digital-to-analog converter (DAC) designed for audio applications. It delivers high-resolution audio output with low distortion, making it ideal for high-fidelity audio systems. The component supports a wide range of audio formats, including PCM data, and features a simple interface for seamless integration into audio systems. Its low power consumption and advanced noise suppression make it a popular choice for portable and professional audio devices.
The PCM5102A offers robust performance and flexibility for audio applications. Below are its key technical specifications:
Parameter | Value |
---|---|
Supply Voltage (VDD) | 1.8V to 3.3V |
Analog Output Voltage Range | 2.1V RMS (typical) |
Signal-to-Noise Ratio (SNR) | 112 dB (typical) |
Total Harmonic Distortion + Noise (THD+N) | -93 dB (typical) |
Sampling Rates Supported | 8 kHz to 384 kHz |
Audio Data Formats | I2S, Left-Justified, Right-Justified |
Power Consumption | 20 mW (typical) |
Package Type | TSSOP-20 |
The PCM5102A comes in a 20-pin TSSOP package. Below is the pin configuration and description:
Pin Number | Pin Name | Description |
---|---|---|
1 | DVDD | Digital power supply (1.8V to 3.3V) |
2 | DGND | Digital ground |
3 | SCK | System clock input |
4 | BCK | Bit clock input for I2S |
5 | DIN | Digital audio data input |
6 | LRCK | Left/Right clock input for I2S |
7 | FMT | Audio format selection |
8 | XSMT | Soft mute control |
9 | FLT | Filter response selection |
10 | VCOM | Common-mode voltage output |
11 | VOUTL | Left-channel analog output |
12 | VOUTR | Right-channel analog output |
13 | AGND | Analog ground |
14 | AVDD | Analog power supply (3.3V) |
15 | NC | No connection |
16 | NC | No connection |
17 | NC | No connection |
18 | NC | No connection |
19 | NC | No connection |
20 | NC | No connection |
The PCM5102A can be interfaced with an Arduino UNO using the I2S protocol. Below is an example code snippet to send audio data to the PCM5102A:
#include <I2S.h> // Include the I2S library for Arduino
void setup() {
// Initialize the I2S interface in master mode
if (!I2S.begin(I2S_PHILIPS_MODE, 44100, 16)) {
// Check if I2S initialization failed
while (1) {
// Stay in an infinite loop if initialization fails
}
}
}
void loop() {
// Example: Send a simple sine wave to the PCM5102A
for (int i = 0; i < 360; i++) {
// Generate a sine wave sample
int sample = 32767 * sin(i * PI / 180);
I2S.write(sample); // Send the sample to the DAC
}
}
No Audio Output
Distorted Audio
High Noise or Hiss
Component Overheating
Q: Can the PCM5102A handle DSD audio formats?
A: No, the PCM5102A is designed to handle PCM audio formats only.
Q: What is the maximum sampling rate supported?
A: The PCM5102A supports sampling rates up to 384 kHz.
Q: Do I need an external clock source for the PCM5102A?
A: Yes, the PCM5102A requires a stable system clock input on the SCK pin.
Q: Can I connect the PCM5102A directly to headphones?
A: While the PCM5102A provides analog output, it is recommended to use an amplifier for driving headphones or speakers.