Support software
Data sheet
A newer version of this product is available
Same functionality with different pin-out to the compared device
PCM1864
- 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)
- Fixed Gain: 0 dB, 12 dB, 32 dB
- 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
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.
Technical documentation
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View all 7 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | PCM186x 4-Channel or 2-Channel, 192-kHz, Audio ADCs datasheet (Rev. D) | PDF | HTML | 28 Mar 2018 |
| Analog Design Journal | Selecting capacitors to minimize distortion in audio applications (Rev. A) | PDF | HTML | 02 May 2023 | |
| White paper | Designing professional audio mixers for every scenario | 28 Jun 2018 | ||
| Application note | Sitara Linux ALSA DSP Microphone Array Voice Recognition | 30 Jun 2017 | ||
| Design guide | PCM1864 Based Circular Microphone Board Reference Design | 10 Apr 2017 | ||
| EVM User's guide | PCM186x EVM User's Guide | 31 Mar 2015 | ||
| Application note | Optimizing Signal Chain Noise on PCM186x Devices | 05 Feb 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
PCM1864EVM — PCM1864 103dB 4-Ch Software-Controlled Audio ADC With Universal Front End Evaluation Module
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 (...)
User guide: PDF
Driver or library
PCM186X-DRIVERS — PCM186x ADC family Linux driver support
These Linux drivers support our low-power audio analog-to-digital converters (ADCs) in the PCM18xx device family, and include both .c and .h files. The "Go to third party" buttons below will allow you to downlod the appropriate drivers from git.kernal.org.
Linux main line status
Linux main line status
Available in Linux (...)
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
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 (...)
Reference designs
TIDEP-0088 — Audio Pre-Processing System Reference Design for Voice-Based Applications
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 (...)
Reference designs
TIDEP-0083 — Voice Triggering and Processing with Cloud Connection to IBM Watson Reference Design
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. (...)
Reference designs
TIDA-01454 — PCM1864-Based Circular Microphone Board (CMB) Reference Design
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 (...)
Reference designs
TIDEP-0077 — Audio Preprocessing System Reference Design for Voice-Based Applications
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 (...)
Reference designs
TIDEP-0099 — Audio Preprocessing System Reference Design for Voice-Based Applications
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TSSOP (DBT) | 30 | Ultra Librarian |
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