TLV320AIC34 Low Power, Four Channel Audio CODEC for Portable Audio Applications

The TLV320AIC34 is a low-power four-channel stereo audio codec with extensive register-based power control. It has two independent PLLs allowing for simultaneous operation which is useful when different audio streams with different sampling rates pass through the device at the same time; such as audio on a Bluetooth headset and audio capture at CD or MP3 sampling rates. It supports both digital and analog microphones in simultaneous operation. It also has sufficient number of audio inputs to support simultaneous noise cancellation for digital and analog microphones. When coupled with notch filtering these features help reduce or eliminate microphone wind noise or system noise like digital camera lens motor.

Value Statement
The TLV320AIC34 is TI's most flexible portable stereo CODEC. It has excellent SNR and THD performance for the portable consumer electronics market. The TLV320AIC34 also includes an ultra-low power analog bypass mode and notch filtering. Notch filtering reduces or eliminates digital camera lens motor noise, CCD noise, and microphone wind noise. It has two independent PLLs which accept any input clock between 512 kHz - 50MHz, unlike many codecs which require a crystal (increasing power consumption and board space). The device has extremely low power consumption, which extends battery life in portable applications.
FEATURES
Total of four ADCs and DACs
Two independent PLLs
Two independently programmable bass / treble / EQ / deemphasis / 3-D shaping engines and programmable ADC Notch Filters
I2C control interfaces
Wide variety of data interfaces I2S, DSP Mode, Left/Right justified, PCM and TDM
15mW playback and software programmable power module power control
APPLICATIONS
Digital Cameras      •  Smart Cellular Phones

BENEFITS
Simultaneously handle 2 stereo streams or one stereo and two mono or voice streams or four mono streams
Simultaneously deliver two audio streams at different sampling rates from two flexible 512kHz- 50MHz input clocks
Digital audio effects such as filtering and equalization on multiple audio streams
Simple, standard connection to host that controls multiple audio interfaces
Flexible audio inputs allow connection to multiple sound sources such as FM tuners, car kits, microphones and multimedia processors
Extends battery life while maximizing user experience
Texas Instruments
Part Number
Packaging Package # DACs /
# ADCs
Resolution
(Bits)
Voltage - Supply, Analog Voltage - Supply, Digital  
296-22885-2-ND Tape & Reel 87-BGA 4 / 4 24 b 2.4 V ~ 3.6 V 1.525 V ~ 1.95 V Datasheet Image
296-22885-1-ND Cut Tape
Application Example Image