Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

TWL6040

SWCS052B – AUGUST 2010 – REVISED AUGUST 2014

TWL6040 8-Channel Low-Power Audio Codec for Portable Applications

1

Device Overview

1.1

Features

1

• Four Audio Digital-to-Analog Converter (DAC)

• Dual Phase-Locked Loops (PLLs) for Flexible

Channels

Clock Support:

• Stereo Capless Headphone Drivers:

– 32-kHz Sleep Clock Input for System Low-

Power Playback Mode

– Up to 104-dB DR

– 12-, 19.2-, 26-, and 38.4-MHz System Clock

– Power Tune for Performance and Power

Input

Consumption Tradeoff

• Accessory Plug and Unplug Detection, Accessory

• Stereo 8

Ω, 1.5 W per Channel Speaker Drivers

Button Press Detection

• Differential Earpiece Driver

• Integrated Power Supplies:

• Stereo Line-Out

– Negative Charge Pump for Capless Headphone

• Two Audio Analog-to-Digital Converter (ADC)

Driver

Channels:

– Two Low Dropout Voltage Regulators (LDOs)

– 96-dBA SNR

for High Power Supply Rejection Ratio (PSRR)

• Four Audio Inputs:

– Three Differential Microphone Inputs

• Thermal Protection:

– Stereo Line-In and FM Input

– Host Interrupt

• Two Vibrator and Haptics Feedback Channels:

• Power Supplies:

– Differential H-Bridge Drivers

– Analog: 2.1 V

• Two Low-Noise Analog Microphone Bias Outputs

– Digital I/O: 1.8 V

• Two Digital Microphone Bias Outputs

– Battery: 2.3 to 5.5 V

• Analog Low-Power Loop from Line-in to

• Package 6-mm × 6-mm 120-Pin PBGA

Headphone and Speaker Outputs

1.2

Applications

•

Mobile and Smart Phones

•

Handheld Devices

•

MP3 Players

1.3

Description

The TWL6040 device is an audio coder/decoder (codec) with a high level of integration providing analog

audio codec functions for portable applications, as shown in Figure 1-1. The device contains multiple

audio analog inputs and outputs, as well as microphone biases and accessory detection. The device is

connected to the OMAP™ 4 host processor through a proprietary PDM interface for audio data

communication enabling partitioning with optimized power consumption and performance. Multichannel

audio data is multiplexed to a single wire for downlink (PDML) and uplink (PDMUL).

The OMAP4 device provides the TWL6040 device with five PDM audio-input channels (DL0–DL4).

Channels DL0–DL3 are connected to four parallel DAC channels multiplexed to stereo headphone (HSL,

HSR), stereo speaker (HFL, HFR), and earpiece (EAR) or stereo line outputs (AUXL, AUXR).

The stereo headphone path has a low-power (LP) mode operating from a 32-kHz sleep clock to enable

more than 100 hours of MP3 playback time. Very-high dynamic range of 104 dBA is achieved when using

the system clock input and DAC path high-performance (HP) mode. Class-AB headphone drivers provide

to a typical 32-

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. PRODUCT PREVIEW Information. Product in design phase of

development. Subject to change or discontinuance without notice.