TI PCM1864DBTR

The PCM186x series audio front-end devices introduce a new approach to audio function integration, enabling easy compliance with European Ecodesign regulations while achieving high-performance end products at lower cost. The PCM186x supports 3.3V single-supply operation and provides an integrated PGA in a small package; this configuration enables smaller, smarter products at reduced cost. The PCM186x audio front end supports single-ended input levels ranging from small mV-level microphone inputs to 2.1VRMS line inputs, eliminating the need for external resistor voltage dividers. The front-end mixer (MIX), MUX, and PGA also support differential (Diff), pseudo-differential, and single-ended (SE) inputs, making these devices ideal interfaces for products requiring noise rejection. The PCM186x integrates numerous system-level functions that can supplement or replace certain DSP functions. The integrated bandgap voltage reference delivers excellent PSRR, potentially eliminating the need for a dedicated analog 3.3V supply rail.

• High SNR performance: –110dB SNR (PCM1861/63/65), 103dB SNR (PCM1860/62/64)
• ADC sampling rate (fS) = 8kHz to 192kHz
• Up to four independent ADC channels
• Single-ended 2.1VRMS full-scale (FS) input
• Differential 4.2VRMS FS input
• Hardware (HW) control: PCM1860/61; Software (SW) control (I2C or SPI): PCM1862/63/64/65
• Supports up to four digital microphones (software-controlled devices)
• Programmable gain amplifier (PGA) — Fixed gain: 0dB, 12dB, 32dB (PCM1860/61); Software-controlled gain: –12dB to +32dB (PCM1862/63/64/65)
• Integrated high-performance audio PLL
• 3.3V single-supply operation
• Power consumption at 3.3V: < 85mW (PCM1860/61/62/63); < 145mW (PCM1864/65)
• Energysense audio content detector for audio system wake and sleep
• Master/slave audio interface
• Automatic PGA clip suppression control
• PCB package compatibility across all devices

• Home theater and TV
• Voice control devices
• Bluetooth speakers
• Microphone array processors