Overview
The TLV320ADC5140IRTWR is a high-performance, quad-channel audio analog-to-digital converter (ADC) produced by Texas Instruments. This device, part of the Burr-Brown™ series, supports simultaneous sampling of up to four analog channels or eight digital channels for pulse density modulation (PDM) microphone inputs. It is designed for use in space-constrained audio systems, particularly in far-field microphone recording applications. The TLV320ADC5140IRTWR offers advanced features such as programmable channel gain, digital volume control, phase-locked loop (PLL), and various filter configurations, making it an excellent choice for voice-activated digital assistants, teleconferencing systems, and security and surveillance systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| ADC Channels | 4 (analog), 8 (digital PDM) |
| Sample Rate (Max) | 768 kHz |
| SNR (Typical) | 120 dB |
| Control Interface | I2C, SPI |
| Digital Audio Interface | TDM, I2S, Left-Justified (LJ) |
| Word Length | 16 bits, 20 bits, 24 bits, 32 bits |
| Supply Voltage | 3.3 V or 1.8 V |
| Package Type | 24-pin WQFN |
| Operating Temperature | –40°C to +125°C |
Key Features
- Programmable channel gain: 0 dB to 42 dB in 1-dB steps
- Digital volume control: –100 dB to 27 dB
- Gain calibration with 0.1-dB resolution and phase calibration with 163-ns resolution
- Programmable microphone bias or supply voltage generation
- Low-latency signal processing filter selection
- Programmable high-pass filter (HPF) and biquad digital filters
- Automatic gain controller (AGC)
- Integrated high-performance audio PLL and automatic clock divider setting configurations
- Single-supply operation: 3.3 V or 1.8 V
Applications
- Microphone array systems
- Voice-activated digital assistants
- Teleconferencing systems
- Security and surveillance systems
Q & A
- What is the maximum sample rate of the TLV320ADC5140IRTWR?
The maximum sample rate is 768 kHz.
- What types of input configurations does the TLV320ADC5140IRTWR support?
The device supports both single-ended and differential input configurations.
- What control interfaces are available for the TLV320ADC5140IRTWR?
The device can be controlled using either I2C or SPI interfaces.
- What is the typical signal-to-noise ratio (SNR) of the TLV320ADC5140IRTWR?
The typical SNR is 120 dB.
- What are the supported digital audio formats for the TLV320ADC5140IRTWR?
The device supports TDM, I2S, and left-justified (LJ) audio formats.
- What is the operating temperature range of the TLV320ADC5140IRTWR?
The device operates from –40°C to +125°C.
- What is the package type and size of the TLV320ADC5140IRTWR?
The device is offered in a 24-pin WQFN package with dimensions of 4 mm x 4 mm.
- Does the TLV320ADC5140IRTWR support programmable microphone bias voltage?
Yes, the device supports programmable microphone bias or supply voltage generation.
- What are some of the key applications for the TLV320ADC5140IRTWR?
Key applications include microphone array systems, voice-activated digital assistants, teleconferencing systems, and security and surveillance systems.
- What is the power consumption of the TLV320ADC5140IRTWR at different sample rates?
The power consumption is approximately 8.5 mW/channel at 16-kHz sample rate and 9.2 mW/channel at 48-kHz sample rate for a 1.8-V AVDD supply.
