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TWL6041

SWCS058D – AUGUST 2010 – REVISED AUGUST 2014

TWL6041 8-Channel Low-Power Audio Codec for Portable Applications

1

Device Overview

1.1

Features

1

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

• Analog Low-Power Loop from Line-in to

Channels

Headphone and Speaker Outputs

• Stereo Capless Headphone Drivers

• Dual Phase-Locked Loops (PLLs) for Flexible

Clock Support:

– Up to 104-dB DR

– 32-kHz Sleep Clock Input for System Low-

– Power Tune for Performance and Power

Power Playback Mode

Consumption Tradeoff

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

• Stereo 8

Ω, 1.5 W per Channel Speaker Drivers

Input

also with 4-

Ω Support Capability

• Accessory Plug and Unplug Detection, Accessory

• Differential Earpiece Driver

Button Press Detection

• Stereo Line-Out

• Integrated Power Supplies:

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

– Negative Charge Pump for Capless Headphone

Channels

Driver

– 96-dBA SNR

– Two Low Dropout Voltage Regulators (LDOs)

• Four Audio Inputs:

for High Power Supply Rejection Ration (PSRR)

– Three Differential Microphone Inputs

– Stereo Line-In and FM Input

• Thermal Protection:

• Two Vibrator and Haptics Feedback Channels

– Host Interrupt

– Differential H-bridge Drivers

• Power Supplies:

• Two Low-Noise Analog Microphone Bias Outputs

– Analog: 2.1 V

• Two Digital Microphone Bias Outputs

– Digital I/O: 1.8 V

– Battery: 2.3 V–5.5 V

• Package 3.8-mm × 3.8-mm 81-Pin WCSP

1.2

Applications

•

Mobile and Smart Phones

•

Handheld Devices

•

MP3 Players

1.3

Description

The TWL6041 is an audio 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 TWL6041 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

a 1-Vrms output and are ground centered for capless connection to a headphone, thus enabling system

size and cost reduction. The earpiece driver is a differential class-AB driver with 2-Vrms capability to a

typical 32-

Ω load or 1.4-Vrms to a typical 16-Ω load.

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.