Universal front-end 103dB, 4-channel audio ADC "PCM1864"
Adopting a new approach to audio function integration that facilitates compliance with the European Commission's Ecodesign Directive, achieving high performance in the final product. It enables the development of lower-cost, smaller, and smarter products without the need for a 5V power supply or external programmable gain amplifiers (PGA). The highly flexible audio front end eliminates the need for external voltage divider resistors and accommodates a wide range of input levels from a few mV small microphone inputs to 2.1VRMS line inputs. It also integrates numerous system-level functions that support or serve as alternatives to DSP capabilities. All these functions can be powered by a single 3.3V supply. Since the built-in bandgap voltage reference provides excellent PSRR, a dedicated analog 3.3V rail is unnecessary. Evaluation modules and reference designs are also available.
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basic information
■ Universal analog mic input, 2.1VRMS full scale 8 analog input pins with MUX/PGA PGA/MUX front-end analog pre-mix function Single-ended/pseudo-differential/differential input with mic bias 4 digital microphone inputs ■ Up to 4 mono ADC channels ■ I2C/SPI control ■ Hardware programmable gain amplifier ■ Software programmable gain amplifier ■ Built-in high-performance audio PLL ■ Single 3.3V power supply for analog/digital Additional 1.8V core/interface to reduce power consumption ■ Power consumption at 3.3V: <145mW ■ Audio content detector using TI's "Energysense technology": for automatic system wake-up/sleep ■ Master/slave audio interface ■ Mixer function: Digital mixer that mixes ADC output and I2S Simultaneous input Zero-crossing PGA gain change ■ Automatic PGA clip suppression control ■ PCB footprint compatibility across all products in the PCM186x family ■ AEC-Q100 compliant product 'PCM1864-Q1'
Price information
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Applications/Examples of results
Home theater/TV, car head unit, Bluetooth speakers, microphone array processor, etc.
Company information
Texas Instruments (Headquarters: Dallas, Texas, USA; Chairman, President, and CEO: Rich Templeton; Abbreviation: TI) supports customers in developing new electronic devices that make the world "more convenient, healthier, safer, environmentally friendly, and enjoyable," and works together to solve challenges. TI has manufacturing, design, and sales locations in over 30 countries worldwide and continues to pursue innovation. TI's analog ICs and embedded processing support everyday life from behind the scenes in a society overflowing with digital devices. The company is actively investing in products and technologies for markets that will become increasingly important in the future, such as the environment, energy, healthcare, medical devices, and security. Technical Inquiry Contact TI Japan Product Information Center 【http://www.tij.co.jp/pic/】
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