TLV320AIC12K

语音频带单声道编解码器

The TLV320AIC1x 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 TLV320AIC1x 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 TLV320AIC1x 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 DSPs i.e. TMS320C5000, TMS320C6000 and microcontrollers. The SMARTDM supports both continuous data transfer mode and on-the-fly reconfiguration programming mode. The TLV320AIC1x can be gluelessly cascaded to any SMARTDM-based device to form multichannel codec and up to 16 TLV320AIC1x codecs can be cascaded to a single serial port.

The TLV320AIC1x 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 TLV320AIC1x 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- speaker driver.

The TLV320AIC1x 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 TLV320AIC1x 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 TLV320AIC1xk is characterized for industrial operation from -40°C to 85°C.

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Mono 16-Bit Oversampling Sigma-Delta A/D Converter

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Mono 16-Bit Oversampling Sigma-Delta D/A Converter

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Support Maximum Master Clock of 100 MHz to Allow the DSP Output Clock to be Used as a Master Clock

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Selectable FIR/IIR Filter With Bypassing Option

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Programmable Sampling Rate up to:

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Max 26 Ksps With On-Chip IIR/FIR Filter

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Max 104 Ksps With IIR/FIR Bypassed

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On-Chip FIR Produced 84-dB SNR for ADC and 92-dB SNR for DAC

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Smart Time Division Multiplexed SMARTDM Serial Port

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Glueless 4-Wire Interface to DSP

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Automatic Cascade Detection ACD Self-Generates Master/Slave Device Addresses

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Programming Mode to Allow On-the-Fly Reconfiguration

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Continuous Data Transfer Mode to Minimize Bit Clock Speed

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Support Different Sampling Rate for Each Device

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Turbo Mode to Maximize Bit Clock for Faster Data Transfer and Allow Multiple Serial Devices to Share the Same Bus

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Allows up to 16 Devices to be Connected to a Single Serial Port

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Host Port

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2-Wire Interface

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Selectable I2C or S2C

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Differential and Single-Ended Analog Input/Output

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Built-In Analog Functions:

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Analog and Digital Sidetone

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Antialiasing Filter AAF

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Programmable Input and Output Gain Control PGA

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Microphone/Handset/Headset Amplifiers

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AIC12K has an 8- Speaker Driver

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Power Management With Hardware/Software Power-Down Modes 30 µW

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Separate Software Control for ADC and DAC Power Down

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Fully Compatible With Common TMS320™ DSP Family and Microcontroller Power Supplies

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1.65 V - 1.95 V Digital Core Power

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1.1 V - 3.6 V Digital I/O

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2.7 V - 3.6 V Analog

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Power Dissipation PD

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11.2 mW at 3.3 V in Standard Operation

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17.8 mW at 3.3 V With Headphone Drivers

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Internal Reference Voltage Vref

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2s Complement Data Format

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Test Modes Which Include Digital Loopback and Analog Loopback

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APPLICATIONS

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Digital Still Cameras

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Wireless Accessories

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Hands-Free Car Kits

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VOIP

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Cable Modem

SMARTDM, TMS320C5000, TMS320C6000 are trademarks of Texas Instruments.

TMS320 is a trademark of Texas Instrument.