Entertainment systems take up a large chuck of market share in the consumer electronics niche. The entertainment systems largely include audio and video systems. The CODECs are an integral part of any audio electronic system. CODEC is a short form for coder-decoder. The primary task of an audio CODEC is to convert analog audio signals to digital signals and convert back the digital audio signals to analog signals. The ADC (analog to digital converter) and DAC (digital to analog converter) are the essential parts of an audio CODEC. These CODECs are widely used in sound cards, amplifiers, stereo sound systems and studio recording equipment.
What is SGTL5000XNAA3?
The SGTL5000XNAA3 is a low power stereo CODEC with integrated headphone amp developed by Freescale Semiconductor. This IC is designed to provide a single chip solution for devices which require LINE_IN, LINE_OUT, MIC_IN, HEADPHONE_OUT, and digital I/Os. The major advantages of SGTL5000XNAA3 are the ultra low power consumption, high performance, and small footprint. The IC is ideal for audio applications such as media players, navigation devices, smart phones, tablets, gym machines and consumer electronics. The cap-less headphone design and internal PLL features keep the device cost reasonably low.
Pin Configuration
The pin configuration of the SGTL3000XNAA3 stereo audio CODEC IC is given in the table below:
Pin number | Number of pins |
1 | Right headphone output |
2 | Headphone virtual ground |
3 | Analog voltage supply |
4 | Left headphone output |
5 | DAC VAG filter |
6 | Right LINEOUT |
7 | Left LINEOUT |
8 | Right LINEIN |
9 | Left LINEIN |
10 | MIC input |
11 | MIC bias |
12 | Digital I/O voltage |
13 | System master clock |
14 | I2S frame clock |
15 | I2S bit clock |
16 | I2S data output |
17 | I2S data input |
18,19 | I2C mode |
20 | Digital voltage supply |
Features
- Support for external analog input
- Low power CODEC bypass
- Includes MIC bias
- Programmable MIC gain
- ADC with 85 dB SNR
- Cap-less design
- DAC with 100 dB SNR
- Routing to processor using I2S
- PLL input range of 8-27MHz
- Supply voltage range of 1.6V to 3.6V
Applications
The SGTL5000XNAA3 single chip stereo CODEC has following applications:
- Media players
- Audio systems
- Smart phones
- Tablets
- Medical equipment
- Gym electronic equipment
Specifications
The major technical specifications of the SGTL5000XNAA3 are given as following:
- ADC SNR: 85 dB
- DAC SNR: 100 dB
- Max output power: 62.5mW
- Digital I/O: I2S
- Power supply: 1.6-3.6V
- Inputs: LINE_IN, MIC_IN, I2S_IN
- Outputs: LINE_OUT, HEADPHONE_OUT, I2S_OUT
- Clock frequency: 8.0-27.0MHz
- Operating temperature: -40 to 85 degrees
- Output impedance: 320 Ohm
- Packages: 20-QFN, 32-QFN
Alternatives
AD73311LARSREEL, AD73311LARREEL7, AD73311LARREEL;
How SGTL5000SNAA3 work?
The SGTL5000SNAA3 is a stereo audio codec for consumer electronics applications. This single chip audio CODEC solution can be used in a number of audio applications. This audio CODEC can be used in applications which require LINE_IN, LINE_OUT, MIC_IN, I2S_IN and HEADPHONE_OUT.
The application circuit with MP3 input, MIC input, headphone output, and amplifier output can be seen in the figure below:
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