Overview
The TLV320AIC14IDBT, produced by Texas Instruments, is a low-power, high-performance, highly-integrated voiceband codec. This device is designed with advanced technological innovations, particularly the Smart Time Division Multiplexed Serial Port (SMARTDM), which optimizes DSP performance with a glue-free interface to popular DSPs and microcontrollers. The TLV320AIC14 integrates critical functions necessary for most voice-band applications, including microphone preamplifiers, handset/headset preamplifiers, antialiasing filters, and programmable gain amplifiers. It is characterized by its low power consumption and extensive power management features, making it ideal for portable and power-sensitive applications.
Key Specifications
| Specification | Details |
|---|---|
| Converter Type | 16-Bit Oversampling Sigma-Delta A/D and D/A Converter |
| Sampling Rate | Max 26 KSPS with On-Chip IIR/FIR Filter, Max 104 KSPS with IIR/FIR Bypassed |
| Signal-to-Noise Ratio (SNR) | 84 dB for ADC and 91 dB for DAC over 13-kHz BW (On-Chip FIR), 87 dB for ADC and 92 dB for DAC (External DSPs IIR/FIR) |
| Master Clock | Supports up to 100 MHz |
| Power Supply | 1.65 V to 1.95 V (Digital Core), 2.7 V to 3.6 V (Analog and I/O) |
| Power Consumption | 10 mW at 3 V |
| Operating Temperature | Commercial: 0°C to 70°C, Industrial: -40°C to 85°C |
| Interface | SMARTDM (4-Wire), Host Port (2-Wire, I2C or S2C) |
Key Features
- Smart Time Division Multiplexed Serial Port (SMARTDM) for optimized DSP performance
- Glueless 4-Wire Interface to DSP and microcontrollers
- Automatic Cascade Detection (ACD) for self-generated master/slave device addresses
- Programmable Sampling Rate and Selectable FIR/IIR Filters with Bypassing Option
- Continuous Data Transfer Mode and On-the-Fly Reconfiguration Programming Mode
- Turbo Mode for maximizing bit clock rate to 25 MHz
- Supports up to 16 Codecs on a Single Serial Port
- Flexible Host Port with 2-Wire Interface (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 Device Power-Down and Independent Software Control for ADC, DAC, Op-Amps, and IIR/FIR Filter
Applications
The TLV320AIC14IDBT is ideal for various portable and power-sensitive applications, including:
- Wireless accessories
- Hands-free car kits
- VOIP (Voice over Internet Protocol)
- Cable modems
- Speech processing
- Single or multichannel active control applications due to its low group delay characteristic
Q & A
- What is the primary function of the TLV320AIC14IDBT?
The TLV320AIC14IDBT is a low-power, high-performance voiceband codec that converts analog signals to digital and vice versa using oversampling sigma-delta technology.
- What is the SMARTDM technology in the TLV320AIC14IDBT?
SMARTDM is the Smart Time Division Multiplexed Serial Port technology that optimizes DSP performance by providing a glue-free interface to DSPs and microcontrollers, supporting continuous data transfer and on-the-fly reconfiguration.
- What are the power supply requirements for the TLV320AIC14IDBT?
The device operates with a digital core power supply of 1.65 V to 1.95 V and an analog/I/O power supply of 2.7 V to 3.6 V.
- How much power does the TLV320AIC14IDBT consume?
The device consumes only 10 mW at 3 V.
- What is the operating temperature range for the TLV320AIC14IDBT?
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 interfaces does the TLV320AIC14IDBT support?
The device supports a SMARTDM 4-Wire interface and a 2-Wire host port that can be configured as I2C or S2C.
- What are some of the built-in functions of the TLV320AIC14IDBT?
The device includes built-in functions such as sidetone, antialiasing filter (AAF), programmable input and output gain control (PGA), and microphone amplifiers.
- How many codecs can be connected to a single serial port using SMARTDM?
Up to 16 codecs can be connected to a single serial port.
- What is the significance of the turbo mode in the TLV320AIC14IDBT?
The turbo mode maximizes the bit clock rate to 25 MHz, allowing for faster data transfer and higher data bandwidth.
- What are some typical applications of the TLV320AIC14IDBT?
The device is suitable for wireless accessories, hands-free car kits, VOIP, cable modems, speech processing, and single or multichannel active control applications.
