Overview
The TLV320AIC14IDBT-1, produced by Texas Instruments, is a low-cost, low-power, high-performance, and highly integrated voiceband codec. This device is designed with advanced technological features to optimize DSP performance and is particularly suited for voice-band applications. It integrates critical functions such as MIC preamplifiers, handset/headset preamps, antialiasing filters (AAF), input/output programmable gain amplifiers (PGA), and selectable low-pass IIR/FIR filters. The TLV320AIC14IDBT-1 operates with extensive power management, consuming only 10 mW at 3 V, making it ideal for portable applications.
Key Specifications
| Specification | Details |
|---|---|
| ADC/DAC Resolution | 16-Bit Oversampling Sigma-Delta |
| Sampling Rate | Up to 26 KSPS with IIR/FIR Filter, Up to 104 KSPS with IIR/FIR Bypassed |
| SNR | 84 dB for ADC, 91 dB for DAC over 13-kHz BW (On-Chip FIR) |
| Master Clock | Up to 100 MHz |
| Serial Port | Smart Time Division Multiplexed Serial Port (SMARTDM), 4-Wire Interface |
| Host Port | 2-Wire Interface, Selectable I2C or S2C |
| Power Supply | 2.7 V to 3.6 V for Analog and I/O, 1.65 V to 1.95 V for Digital Core |
| Power Consumption | 10 mW at 3 V |
| Operating Temperature | 0°C to 70°C (Commercial), –40°C to 85°C (Industrial) |
Key Features
- C54x Software Driver Available
- Programmable Sampling Rate up to 26 KSPS with IIR/FIR Filter and up to 104 KSPS with IIR/FIR Bypassed
- Selectable FIR/IIR Filter With Bypassing Option
- Smart Time Division Multiplexed Serial Port (SMARTDM) with Glueless 4-Wire Interface to DSP
- Automatic Cascade Detection (ACD) Self-Generates Master/Slave Device Addresses
- Programming Mode to Allow On-the-Fly Reconfiguration and Continuous Data Transfer Mode
- Turbo Mode to Maximize Bit Clock for Faster Data Transfer and Higher Data Bandwidth
- Host Port with 2-Wire Interface, Selectable I2C or S2C
- Differential and Single-Ended Analog Input/Output
- Built-In Functions: Sidetone, Antialiasing Filter (AAF), Programmable Input and Output Gain Control (PGA), Microphone Amplifiers
- Extensive Power Management with Hardware/Software Power-Down Modes
Applications
The TLV320AIC14IDBT-1 is ideal for various portable and voice-band applications, including:
- Wireless accessories
- Hands-free car kits
- VOIP
- Cable modems
- Speech processing
- Single or multichannel active control applications due to its low group delay characteristic
Q & A
- What is the resolution of the ADC and DAC in the TLV320AIC14IDBT-1?
The TLV320AIC14IDBT-1 features 16-bit oversampling sigma-delta ADC and DAC converters.
- What are the programmable sampling rates of the TLV320AIC14IDBT-1?
The device supports programmable sampling rates up to 26 KSPS with the IIR/FIR filter and up to 104 KSPS with the IIR/FIR filter bypassed.
- What is the SMARTDM technology in the TLV320AIC14IDBT-1?
The SMARTDM (Smart Time Division Multiplexed Serial Port) is a synchronous 4-wire serial port that supports continuous data transfer mode and on-the-fly reconfiguration programming mode, allowing up to 16 codecs to share a single serial bus.
- What power management features does the TLV320AIC14IDBT-1 have?
The device includes extensive power management features such as device power-down, independent software control for turning off ADC, DAC, op-amps, and IIR/FIR filter, and consumes only 10 mW at 3 V.
- What are the operating temperature ranges for the TLV320AIC14IDBT-1?
The device is characterized for commercial operation from 0°C to 70°C and industrial operation from –40°C to 85°C.
- What types of host port interfaces are supported by the TLV320AIC14IDBT-1?
The host port interface can be programmed to be either an industrial standard I2C or a simple S2C (start-stop communication protocol).
- What is the maximum master clock frequency supported by the TLV320AIC14IDBT-1?
The device supports a maximum master clock frequency of up to 100 MHz.
- What is the SNR performance of the TLV320AIC14IDBT-1?
The device achieves an SNR of 84 dB for ADC and 91 dB for DAC over a 13-kHz bandwidth using on-chip FIR filters.
- Can the TLV320AIC14IDBT-1 be used in multichannel applications?
Yes, the device supports multichannel applications and can be cascaded with up to 16 codecs on a single serial port.
- What are some typical applications of the TLV320AIC14IDBT-1?
The device is suitable for wireless accessories, hands-free car kits, VOIP, cable modems, speech processing, and single or multichannel active control applications.
