PCM2906CDBR

S/N Ratio, ADCs / DACs (db) Typ:	89 / 96
Base Part Number:	PCM2906C
Supplier Device Package:	28-SSOP
Package / Case:	28-TSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-25°C ~ 85°C
Voltage - Supply, Digital:	3.1 V ~ 3.5 V
Voltage - Supply, Analog:	3.1 V ~ 3.5 V
Dynamic Range, ADCs / DACs (db) Typ:	89 / 93
Series:	--
Sigma Delta:	Yes
Number of ADCs / DACs:	2 / 2
Resolution (Bits):	16 b
Data Interface:	USB
Type:	Stereo Audio
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PCM2906CDBR Application Field and Working Principle

Introduction

PCM2906CDBR is a codec chip manufactured by Texas Instruments that integrates two stereo DACs and two stereo ADCs into a single IC. The high performance, low power DACs support both 16- and 24-bit resolutions, reproducing stunning audio detail in both digital and analog formats. The chip is often used in DVD players, A/V receivers, and other audio applications.

Application Field

The PCM2906CDBR can be used in a wide variety of audio applications. It has a very low power consumption while offering full audio performance at sample rates up to 96kHz and a word length of up to 24 bits. The chip is also very small and can be integrated into a wide range of products, from portable devices to large television home theater systems. This chip makes a great choice for automotive audio systems, providing digital-analog audio conversion with very low power consumption. It can also be used in portable digital recorders, such as digital audio workstations, for excellent audio quality. It is also great for wearable audio devices like headphones and earbuds, delivering superb sound quality with very low power consumption.

Working Principle

The PCM2906CDBR works by providing a digital-analog audio conversion. The chip contains two stereo DACs (Digital-to-Analog Converters) and two stereo ADCs (Analog-to-Digital Converters). These convert the analog signal into a digital signal and back again to an analog signal in order to reproduce audio data with high fidelity. The PCM2906CDBR supports sample rates up to 96kHz and a word length of up to 24 bits. This is roughly 4x larger than the resolution offered by CD quality audio, so the chip can offer excellent audio quality. The chip also has a 50 kHz I2S output that can easily interface with DSPs and microcontrollers. The entire system is powered by a single 3.3V power source. It is protected against ESD (electro-static discharge), as well as static and dynamic vulnerability. This makes it suitable for use in many portable and automotive products where power demands are an issue.

Conclusion

The PCM2906CDBR is an ideal choice for audio applications that require high quality, low power audio conversion. It supports an extensive range of sample rates and word lengths, delivering excellent audio performance. It also has an integrated I2S output that makes it easy to interface with microcontrollers and DSPs. And because it operates on a single 3.3 V power source, it is highly suitable for use in portable and automotive products.

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