TLV320AIC14K

` Mono 16-Bit Oversampling Sigma-Delta A/D Converter
` Mono 16-Bit Oversampling Sigma-Delta D/A Converter
` Support Maximum Master Clock of 100 MHz to Allow the DSP Output Clock to be Used as a Master Clock
` Selectable FIR/IIR Filter With Bypassing Option
` Programmable Sampling Rate up to:
   Max 26 Ksps With On-Chip IIR/FIR Filter
   Max 104 Ksps With IIR/FIR Bypassed
` On-Chip FIR Produced 84-dB SNR for ADC and 92-dB SNR for DAC
` Smart Time Division Multiplexed (SMARTDM<sup>®</sup>) Serial Port
   Glueless 4-Wire Interface to DSP
    Automatic Cascade Detection (ACD) Self-Generates Master/Slave Device Addresses
   Programming Mode to Allow On-the-Fly Reconfiguration
   Continuous Data Transfer Mode to Minimize Bit Clock Speed
   Support Different Sampling Rate for Each Device
   Turbo Mode to Maximize Bit Clock for Faster Data Transfer and Allow Multiple Serial Devices to Share the Same Bus
   Allows up to 16 Devices to be Connected to a Single Serial Port
` Host Port
   2-Wire Interface
   Selectable I2C or S2C
` Differential and Single-Ended Analog Input/Output
` Built-In Analog Functions:
   Analog and Digital Sidetone
   Antialiasing Filter (AAF)
   Programmable Input and Output Gain Control (PGA)
   Microphone/Handset/Headset Amplifiers
   AIC12K Has an 8-W Speaker Driver
   Power Management With Hardware/Software Power-Down Modes 30 W
` Separate Software Control for ADC and DAC Power Down
` Fully Compatible With Common TMS320® DSP Family and Microcontroller Power Supplies
   1.65 V - 1.95 V Digital Core Power
   1.1 V - 3.6 V Digital I/O
   2.7 V - 3.6 V Analog
` Power Dissipation (P<sub>D</sub>)
   11.2 mW at 3.3 V in Standard Operation
   17.8 mW at 3.3 V With Headphone Drivers
` Internal Reference Voltage (V_ref)
` 2s Complement Data Format
` Test Modes Which Include Digital Loopback and Analog Loopback

The TLV320AIC14K is a true low-cost, low-power, high-integrated, high-performance, mono voice codec. It features one 16-bit analog-to-digital (A/D) channel and one 16-bit digital-to-analog (D/A) channel.

The TLV320AIC14K provides high-resolution signal conversion from digital-to-analog (D/A) and from analog-to-digital (A/D) using oversampling sigma-delta technology with programmable sampling rate.The TLV320AIC14K implements the smart time division multiplexed serial port (SMARTDM™). The SMARTDM port is a synchronous 4-wire serial port in TDM format for glue-free interface to TI DSPs (i.e. TMS320C5000™,TMS320C6000™) and microcontrollers. The SMARTDM supports both continuous data transfer mode andon-the-fly reconfiguration programming mode. The TLV320AIC14K can be gluelessly cascaded to anySMARTDM-based device to form multichannel codec and up to 16 TLV320AIC1x codecs can be cascaded to a single serial port.

The TLV320AIC14K also provides a flexible host port. The host port interface is a two-wire serial interface that can be programmed to be either an industrial standard I²C or a simple S²C (start-stop communication protocol).

The TLV320AIC14K also integrates all of the critical functions needed for most voice-band applications including MIC preamplifier, handset amplifier, headset amplifier, antialiasing filter (AAF), input/output programmable gain amplifier (PGA), and selectable low-pass IIR/FIR filters. The AIC12K also includes an 8-W speaker driver.

The TLV320AIC14K implements an extensive power management; including device power-down, independent software control for turning off ADC, DAC, operational-amplifiers, and IIR/FIR filter (bypass) to maximize system power conservation. The TLV320AIC1x consumes only 11.2 mW at 3.3 V.

The TLV320AIC14K low power operation from 2.7 V to 3.6 V power supplies, along with extensive power management, make it ideal for portable applications including wireless accessories, hands free car kits, VOIP,cable modem, and speech processing. Its low group delay characteristic makes it suitable for single or multichannel active control applications.

The TLV320AIC1x is characterized for commercial operation from 0°C to 70°C and industrial operation from -40°C to 85°C. The TLV320AIC14K is characterized for industrial operation from -40°C to 85°C.