TLV320AIC22CPT

TEXAS INSTRUMENTS  TLV320AIC22CPT  线路驱动器, I2C/SPI, 3V-3.6电源, LQFP-48

The is a Two Coder/Decoder Codecs for voice applications, including voice over internet protocol VoIP. It features two analogue-to-digital converter ADC channels and two digital-to-analogue converter DAC channels that can be connected to a handset, headset, speaker, microphone or a subscriber line via an analogue cross-point. The TLV320AIC22C has a flexible serial interface that allows the two channels of the TLV320AIC22C to be interfaced to a single multichannel buffered serial port McBSP of the external digital signal processor DSP. The two channels share the digital interface at different time slots. Up to four TLV320AIC22C units can be cascaded together to obtain eight channels. For control purposes, either the serial interface or the inter-integrated circuit I²C interface can be used. Programmable-gain amplifiers PGAs, preamp gain, microphone bias voltages and analogue cross-point are programmed through the serial interface or the I²C interface.

.

Two 16-bit digital-to-analogue converters DACs

.

Programmable input/output gain

.

8-bit A-law/µ-law companded data or 16-bit linear data complying with G.711 standard

.

Filters comply with G.712 and G.722 standards

.

Programmable analogue-to-digital and digital-to-analogue conversion rate

.

Supports 8- and 16-kHz sampling rate

.

Four TLV320AIC22C ICs can be cascaded together to allow up to eight channels

.

2s-complement Data format

.

Differential outputs

.

Hardware/software power-down

.

Independent power-down for drivers

.

2.5V Microphone bias voltage

.

* 204mW Typical power consumption

.

Green product and no Sb/Br