PCM1865-Q1中文资料具有通用前端的汽车类 110dB 4 通道软件控制型音频 ADC数据手册TI规格书

描述 Description

The PCM186x-Q1 family (PCM1860-Q1, PCM1861-Q1, PCM1862-Q1, PCM1863-Q1, PCM1864-Q1, and PCM1865-Q1) of audio front-end devices take a new approach to audio-function integration to ease compliance with European Ecodesign legislation, while enabling high-performance end products at reduced cost. The PCM186x-Q1 support single-supply operation at 3.3 V, and offer an integrated programable gain amplifier (PGA) in a small package; this configuration makes it feasible to implement smaller and smarter products at a reduced cost.

The PCM186x-Q1 audio front end supports single-ended input levels from small-mV microphone inputs to 2.1-VRMS line inputs, without external resistor dividers. The front-end mixer (MIX), multiplexer (MUX), and PGA also support differential (Diff), pseudo-differential, and single-ended (SE) inputs, making these devices an ideal interface for products that require interference suppression. The PCM186x-Q1 integrate many system-level functions that assist or replace some DSP functions.

An integrated band-gap voltage reference provides excellent PSRR, so that a dedicated analog 3.3-V rail may not be required.

特性 Features

• AEC-Q100 Qualified for Automotive Applications
• HBM ESD Classification Level 2
• High SNR Performance:
• 103-dB SNR (PCM1860-Q1/62-Q1/64-Q1)
• ADC Sample Rate (fS) = 8 kHz to 192 kHz
• Single-Ended, 2.1-VRMS Full-Scale (FS) Input
• Hardware (HW) Control: PCM1860-Q1/61-Q1
• Support for Up To Four Digital Microphones (SW-Controlled Devices)
• Fixed Gain: 0 dB, 12 dB, 32 dB (PCM1860-Q1/61-Q1)
• Integrated High-Performance Audio PLL
• Power Dissipation at 3.3 V:
• Energysense Audio Content Detector for Auto System Wakeup and Sleep
• Automatic PGA Clipping Suppression Control
• PCB-Footprint Compatibility Across All Devices