Audio ADC. TLV320ADC5140 Datasheet

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TLV320ADC5140
SBAS892A – JULY 2019 – REVISED OCTOBER 2019
TLV320ADC5140 Quad-Channel, 768-kHz, Burr-BrownTM Audio ADC
1 Features
1 Multichannel high-performance ADC:
– 4-channel analog microphones or line-in,
– 8-channel digital PDM microphones, or
– Combination of analog and digital microphones
• ADC line and microphone differential input
performance:
– Dynamic range (DR):
– 120-dB, dynamic range enhancer (DRE)
enabled
– 108-dB, DRE disabled
– THD+N: –98 dB
• ADC channel summing mode, DR performance:
– 111-dB, DRE disabled, 2-channel summing
– 114-dB, DRE disabled, 4-channel summing
• ADC input voltage:
– Differential, 2-VRMS full-scale inputs
– Single-ended, 1-VRMS full-scale inputs
• ADC sample rate (fS) = 8 kHz to 768 kHz
• Programmable channel settings:
– Channel gain: 0 dB to 42 dB, 1-dB steps
– Digital volume control: –100 dB to 27 dB
– Gain calibration with 0.1-dB resolution
– Phase calibration with 163-ns resolution
• Programmable microphone bias or supply voltage
generation
• Low-latency signal processing filter selection
• Programmable HPF and biquad digital filters
• Automatic gain controller (AGC)
• I2C or SPI controls
• Integrated high-performance audio PLL
• Automatic clock divider setting configurations
• Audio serial data interface:
– Format: TDM, I2S, or left-justified (LJ)
– Word length: 16 bits, 20 bits, 24 bits, or 32 bits
– Master or slave interface
• Single-supply operation: 3.3 V or 1.8 V
• I/O-supply operation: 3.3 V or 1.8 V
• Power consumption for 1.8-V AVDD supply:
– 8.5 mW/channel at 16-kHz sample rate
– 9.2 mW/channel at 48-kHz sample rate
1
2 Applications
• Microphone array systems
• Voice-activated digital assistants
• Teleconferencing systems
• Security and surveillance systems
3 Description
The TLV320ADC5140 is a Burr-Brown™ high-
performance, audio analog-to-digital converter (ADC)
that supports simultaneous sampling of up to four
analog channels or eight digital channels for the
pulse density modulation (PDM) microphone input.
The device supports line and microphone inputs, and
allows for both single-ended and differential input
configurations. The device integrates programable
channel gain, digital volume control, a programmable
microphone bias voltage, a phase-locked loop (PLL),
a programmable high-pass filter (HPF), biquad filters,
low-latency filter modes, and allows for sample rates
up to 768 kHz. The device supports time-division
multiplexing (TDM), I2S, or left-justified (LJ) audio
formats, and can be controlled with either the I2C or
SPI interface. These integrated high-performance
features, along with the ability to be powered from a
single-supply of 3.3 V or 1.8 V, make the device an
excellent choice for space-constrained audio systems
in far-field microphone recording applications.
The TLV320ADC5140 is specified from –40°C to
+125°C, and is offered in a 24-pin WQFN package.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
TLV320ADC5140
WQFN (24)
4.00 mm × 4.00 mm with
0.5-mm pitch
(1) For all available packages, see the package option addendum
at the end of the data sheet.
Simplified Block Diagram
IN1P_GPI1
IN1M_GPO1
Digital PDM Microphones
Interface
PLL and Clock
Generation
SHDNZ
GPIO1
IN2P_GPI2
IN2M_GPO2
IN3P_GPI3
IN3M_GPO3
IN4P_GPI4
IN4M_GPO4
MICBIAS
VREF
Quad Channel
ADC with
Front-End PGA
Programmable
Digital Filters,
Biquads, AGC
and DRE
Audio Serial
Interface
(TDM, I2S, LJ)
MICBIAS, Regulators and
Voltage Reference
I2C or SPI Control
Interface
AREG DREG Thermal Pad AVSS
(VSS)
AVDD IOVDD
FSYNC
BCLK
SDOUT
SDA_SSZ
SCL_MOSI
ADDR0_SCLK
ADDR1_MISO
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.


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TLV320ADC5140
SBAS892A – JULY 2019 – REVISED OCTOBER 2019
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 7
7.5 Electrical Characteristics........................................... 7
7.6 Timing Requirements: I2C Interface........................ 11
7.7 Switching Characteristics: I2C Interface.................. 11
7.8 Timing Requirements: SPI Interface ....................... 12
7.9 Switching Characteristics: SPI Interface ................. 12
7.10 Timing Requirements: TDM, I2S or LJ Interface ... 12
7.11 Switching Characteristics: TDM, I2S or LJ
Interface ................................................................... 12
7.12 Timing Requirements: PDM Digital Microphone
Interface ................................................................... 13
7.13 Switching Characteristics: PDM Digial Microphone
Interface ................................................................... 13
7.14 Typical Characteristics .......................................... 15
8 Detailed Description ............................................ 18
8.1 Overview ................................................................. 18
8.2 Functional Block Diagram ....................................... 19
8.3 Feature Description................................................. 19
8.4 Device Functional Modes........................................ 56
8.5 Programming........................................................... 57
8.6 Register Maps ......................................................... 61
9 Application and Implementation ...................... 108
9.1 Application Information.......................................... 108
9.2 Typical Applications .............................................. 108
9.3 What to Do and What Not to Do ........................... 115
10 Power Supply Recommendations ................... 115
11 Layout................................................................. 116
11.1 Layout Guidelines ............................................... 116
11.2 Layout Example .................................................. 116
12 Device and Documentation Support ............... 117
12.1 Documentation Support ...................................... 117
12.2 Receiving Notification of Documentation
Updates.................................................................. 117
12.3 Community Resources........................................ 117
12.4 Trademarks ......................................................... 117
12.5 Electrostatic Discharge Caution .......................... 117
12.6 Glossary .............................................................. 117
13 Mechanical, Packaging, and Orderable
Information ......................................................... 118
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (July 2019) to Revision A
Page
• Changed document status from advance information to production data ............................................................................. 1
2
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5 Device Comparison Table
TLV320ADC5140
SBAS892A – JULY 2019 – REVISED OCTOBER 2019
FEATURES
Control interface
Digital audio serial interface
Audio analog channel
Digital PDM channel
Dynamic range enhancer (DRE)
Dynamic range (DRE disabled)
Dynamic range (DRE enabled)
Compatibility
Package
TLV320ADC3140
TLV320ADC5140
TLV320ADC6140
I2C or SPI
TDM, I2S, or left-justified (LJ)
4
4
4
8
8
8
Not available
Available
Available
106 dB
108 dB
113 dB
Not available
120 dB
123 dB
Pin-to-pin, package, and control registers compatible; drop-in replacements of each other
WQFN (RTW), 24-pin, 4.00 mm × 4.00 mm (0.5-mm pitch)
Copyright © 2019, Texas Instruments Incorporated
Product Folder Links: TLV320ADC5140
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