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PCM1864

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103dB 4-Channel Software-Controlled Audio ADC With Universal Front End

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103dB 4-Channel Software-Controlled Audio ADC With Universal Front End

PCM1864

ACTIVE
Data sheet Order now

Product details

Parameters

Number of ADC channels 4 Analog inputs 8 Digital audio interface L Control interface I2C Sampling rate (Max) (kHz) 192 ADC SNR (Typ) (dB) 103 Rating Catalog open-in-new Find other Audio ADCs

Package | Pins | Size

TSSOP (DBT) 30 34 mm² 7.8 x 4.4 open-in-new Find other Audio ADCs

Features

  • 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

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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 high-performance 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 2.1-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 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.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet PCM186x 4-Channel or 2-Channel, 192-kHz, Audio ADCs datasheet (Rev. D) Mar. 28, 2018
Application note Selecting capacitors to minimize distortion in audio applications Jun. 23, 2020
White paper Designing professional audio mixers for every scenario Jun. 28, 2018
Application note Sitara Linux ALSA DSP Microphone Array Voice Recognition Jun. 30, 2017
User guide PCM1864 Based Circular Microphone Board Reference Design Apr. 10, 2017
User guide PCM186x EVM User's Guide Mar. 31, 2015
Application note Optimizing Signal Chain Noise on PCM186x Devices Feb. 05, 2015
Application note Dynamic Performance Testing of Digital Audio D/A Converters Oct. 02, 2000

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
Description

The PCM1864 evaluation module (EVM) is an easy-to-use board for full evaluation of the four channel PCM1864 analog-to-digital converter (ADC). The included USB-12X board connects the EVM to the PC and provides 5-V power. The PCM1864EVM is controlled by PurePath™ Console, which allows the ability (...)

Features
  • Simple external 5-V power connection or USB power from USB-I2X
  • All register programming can be done via USB through USB-I2X using PurePath™ Console
  • Headers and test points available for most signals to and from PCM1864
  • Digital audio can be streamed from included SPDIF optical connectors or through USB (...)
View details

Software development

SUPPORT SOFTWARE Download
SLAC663.ZIP (110 KB)

Design tools & simulation

SIMULATION MODEL Download
SLAM211.ZIP (79 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details

Reference designs

REFERENCE DESIGNS Download
PCM1864-Based Circular Microphone Board (CMB) Reference Design
TIDA-01454 — The PCM1864 circular microphone board (CMB) is a low-cost easy-to-use reference design for applications that require clear-spoken audio, such as voice triggering and speech recognition. This TI Design uses a microphone array to capture a voice signal, and converts it to a digital stream (...)
document-generic Schematic
REFERENCE DESIGNS Download
PCM1864-Based Linear Microphone Board (LMB) Reference Design
TIDA-01470 — The PCM1864 linear microphone board (LMB) is an easy-to-use reference design for applications that are cost sensitive and require clear-spoken audio, such as voice triggering and speech recognition. This TI Design uses a linear microphone array (up to four) to capture a voice signal, and (...)
document-generic Schematic
REFERENCE DESIGNS Download
Audio Pre-Processing System Reference Design for Voice-Based Applications
TIDEP-0088 — This reference design uses multiple microphones, a beamforming algorithm, and other processes to extract clear speech and audio amidst noise and other clutter.  The rapid increase in applications that are used in noise-prone environments for voice activated digital assitants creates demand for (...)
document-generic Schematic
REFERENCE DESIGNS Download
Audio Preprocessing System Reference Design for Voice-Based Applications
TIDEP-0077 — This reference design uses multiple microphones, a beamforming algorithm, and other processes to extract clear speech and audio amidst noise and other clutter.  The rapid increase in applications that are used in noise-prone environments for voice activated digital assistants creates (...)
document-generic Schematic
REFERENCE DESIGNS Download
Voice Triggering and Processing with Cloud Connection to IBM Watson Reference Design
TIDEP-0083 — This reference design enables a single platform for demonstrating end-to-end voice capture, recognition and processing functionality.  It further enhances application development time by including pre-integration with the sensory keyword recognition software and the IBM Watson Cloud services (...)
document-generic Schematic
REFERENCE DESIGNS Download
Audio Preprocessing System Reference Design for Voice-Based Applications
TIDEP-0099 — This reference design uses multiple microphones, a beamforming algorithm, and other processes to extract clear speech and audio amidst noise and other clutter.  The rapid increase in applications that are used in noise-prone environments for voice activated digital assistants creates demand for (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
TSSOP (DBT) 30 View options

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