TLV320AIC22

Features:

* Two 16-Bit Analog-to-Digital Converters
   (ADC)
* Two 16-Bit Digital-to-Analog Converters
   (DAC)
* Programmable Input/Output Gain
* Analog Crosspoint to Connect the Two
   Coder/Decoders (Codecs) to Any of the I/O
   Ports. Controlled Through the Serial Port or
   the I2C Bus
* 8-Bit A-Law/µ-Law Companded Data or
   16-Bit Linear Data Complying With G.711
   Standard
* Programmable ADC and DAC Conversion
   Rate
* Typical 77-dB Signal-to-Noise + Distortion
   for ADC
* Typical 78-dB Signal-to-Noise + Distortion
   for the DAC
* Typical 80-dB Dynamic Range
* All Typical Sampling Rates, Such as 7.2, 8,
   8.229, 9.6, 10.285, 12, 14.4, and 16 kHz
   Supported
* Preamplifiers for Microphone, Handset,
   Headset, and Speaker Phone Gain
   Selectable Via the Serial Port or I2C Bus
* 2.5-V Microphone Bias Voltage
* Seamless Interface to a Single Multichannel
   Buffered Serial Port (McBSP) of a C54x or a
   C6x DSP
* Four TLV320AIC22 ICs Can Be Cascaded
   Together to Allow up to Eight Channels
* 2s-Complement Data Format
* Differential Outputs
* Typical Low Crosstalk < 85 dB
   (Interchannel)
* Hardware/Software Power Down
* Independent Power Down for Drivers
* Single 3.3-V Supply Operation
* 120-mW Typical Power Consumption
* Packaged in 48-Pin Low-Profile Quad
   Flatpack (LQFP) Package


Pinout




Specifications

Supply voltage, AV_DD1, AV_DD2, AV_DD3 to AV_SS1, AV_SS2, AV_SS3, AV_SS, DV_DD to DV_SS  . ... .0.3 V to 4.5 V
Analog input voltage range to AV_SS1, AV_SS2, and AV_SS3  . . . . . . . . . . . . . . . . . . .0.3 V to AV_DD + 0.3 V
Digital input voltage range  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .0.3 V to DV_DD + 0.3 V
Operating virtual junction temperature range, T_J  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40 to 150
Operating free-air temperature range, T_A  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .40 to 85
Storage temperature range, T_stg  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . .65 to 150
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds  . . . . . . . . . . . . . . . . . . ... . . . . . . .260


Description

The TLV320AIC22 is a dual coder/decoder (codec) for voice applications, including voice-over-internet protocol (VOIP). It features two ADC conversion channels and two DAC conversion channels that can be connected to a handset, headset, speaker, microphone, or a subscriber line via an analog crosspoint.

The TLV320AIC22 has a flexible serial interface that allows the two channels of the TLV320AIC22 to be interfaced to a single multichannel buffered serial port (McBSP) of the DSP. The two channels share the digital interface at different time slots. Up to four TLV320AIC22 units can be cascaded together to allow eight channels. For control purposes, either the serial interface or the I2C interface can be used. Programmable gain amplifiers, preamplifier gain, microphone bias voltages, and analog crosspoint are programmed through the serial interface or the I2C interface. The TLV320AIC22 can be powered down, via a dedicated pin or by using software control, to reduce power dissipation.

The TLV320AIC22 is available in a 48-pin LQFP package and is characterized for operation from 40°C to 85°C.