Document
Product Folder
Order Now
Technical Documents
Tools & Software
Support & Community
Burr-Brown Audio
PCM1860, PCM1861, PCM1862 PCM1863, PCM1864, PCM1865
SLAS831D – MARCH 2014 – REVISED MARCH 2018
PCM186x 4-Channel or 2-Channel, 192-kHz, Audio ADCs
1 Features
•1 High SNR Performance: – 110-dB SNR (PCM1861/63/65) – 103-dB SNR (PCM1860/62/64)
• 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: PCM1860/61 • Software (SW) Control (I2C or SPI):
PCM1862/63/64/65 • Support for Up To Four Digital Microphones
(SW-Controlled Devices) • Programmable Gain Amplifier (PGA):
– Fixed Gain: 0 dB, 12 dB, 32 dB (PCM1860/61)
– SW-Controlled Gain: –12 dB to +32 dB (PCM1862/63/64/65)
• Integrated High-Performance Audio PLL • Single 3.3-V Power-Supply Operation • Power Dissipation at 3.3 V:
– < 85 mW (PCM1860/61/62/63) – < 145 mW (PCM1864/65) • 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
2 Applications
• Home Theater and TV • Voice Controlled Devices • Bluetooth® Speaker • Microphone Array Processors
3 Description
The PCM186x family (PCM1860, PCM1861, PCM1862, PCM1863, PCM1864, and PCM1865) of audio front-end devices take a new approach to audio-function integration to ease compliance with European Ecodesign legislation, while enabling highperformance end products at reduced cost. The PCM186x 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 audio front end supports single-ended input levels from small-mV microphone inputs to 2.1VRMS line inputs, without external resistor dividers. The front-end mixer (MIX), multiplexer (MUX), and PGA also support differential (Diff), pseudodifferential, and single-ended (SE) inputs, making these devices an ideal interface for products that require interference suppression. The PCM186x 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
PCM186x
TSSOP (30)
7.80 mm × 4.40 mm
(1) For all available packages, see the package option addendum at the end of the data sheet.
Simplified Application Diagram
IN MIC
IN LINE
PCM186x
DOUT BCK LRCK
TMS320C5535
DOUT
PCM5121
SW mix
TPA3116
BCK LRCK
PCM5100
TPA3116
IN USB
Copyright © 2017, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA.
PCM1860, PCM1861, PCM1862 PCM1863, PCM1864, PCM1865
SLAS831D – MARCH 2014 – REVISED MARCH 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Device Comparison Table..................................... 7 6 Pin Configuration and Functions ......................... 8 7 Specifications....................................................... 12
7.1 Absolute Maximum Ratings .................................... 12 7.2 ESD Ratings............................................................ 12 7.3 Recommended Operating Conditions..................... 12 7.4 Thermal Information ................................................ 12 7.5 Electrical Characteristics: PGA and ADC AC
Performance............................................................. 13 7.6 Electrical Characteristics: DC ................................. 14 7.7 Electrical Characteristics: Digital Filter.................... 16 7.8 Timing Requirements: External Clock..................... 16 7.9 Timing Requirements: I2C Control Interface .......... 17 7.10 Timing Requirements: SPI Control Interface ....... 18 7.11 Timing Requirements: Audio Data Interface for
Slave Mode .............................................................. 19 7.12 Timing Requirements: Audio Data Interface for
Master Mode ............................................................ 20 7.13 Typical Characteristics .......................................... 21 8 Parameter Measurement Information ................ 23 9 Detailed Description ............................................ 25 9.1 Overview ..................................................................