PCM1864-Q1数据手册TI中文资料规格书

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
• Temperature Grade 1: –40°C ≤ TA ≤ +125°C
• HBM ESD Classification Level 2
• CDM ESD Classification Level C5

• High SNR Performance:
• 110-dB SNR (PCM1861-Q1/63-Q1/65-Q1)
• 103-dB SNR (PCM1860-Q1/62-Q1/64-Q1)

• ADC Sample Rate (fS) = 8 kHz to 192 kHz
• Up To Four Independent ADC Channels Available
• Single-Ended, 2.1-VRMS Full-Scale (FS) Input
• Differential, 4.2-VRMS FS Input
• Hardware (HW) Control: PCM1860-Q1/61-Q1
• Software (SW) Control (I2C or SPI): PCM1862-Q1/63-Q1/64-Q1/65-Q1
• Support for Up To Four Digital Microphones (SW-Controlled Devices)
• Programmable Gain Amplifier (PGA):
• Fixed Gain: 0 dB, 12 dB, 32 dB (PCM1860-Q1/61-Q1)
• SW-Controlled Gain: –12 dB to +32 dB (PCM1862-Q1/63-Q1/64-Q1/65-Q1)

• Integrated High-Performance Audio PLL
• Single 3.3-V Power-Supply Operation
• Power Dissipation at 3.3 V:
•
• Energysense Audio Content Detector for Auto System Wakeup and Sleep
• Master or Slave Audio Interface
• Automatic PGA Clipping Suppression Control
• PCB-Footprint Compatibility Across All Devices