TWL6040_16 Datasheet, PDF (1/12 Pages) Texas Instruments – TWL6040 8-Channel Low-Power Audio Codec for Portable Applications

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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)
Channels
• Stereo Capless Headphone Drivers:
– Up to 104-dB DR
– Power Tune for Performance and Power
Consumption Tradeoff
• Stereo 8 Ω, 1.5 W per Channel Speaker Drivers
• Differential Earpiece Driver
• Stereo Line-Out
• Two Audio Analog-to-Digital Converter (ADC)
Channels:
– 96-dBA SNR
• Four Audio Inputs:
– Three Differential Microphone Inputs
– Stereo Line-In and FM Input
• Two Vibrator and Haptics Feedback Channels:
– Differential H-Bridge Drivers
• Two Low-Noise Analog Microphone Bias Outputs
• Two Digital Microphone Bias Outputs
• Analog Low-Power Loop from Line-in to
Headphone and Speaker Outputs
• Dual Phase-Locked Loops (PLLs) for Flexible
Clock Support:
– 32-kHz Sleep Clock Input for System Low-
Power Playback Mode
– 12-, 19.2-, 26-, and 38.4-MHz System Clock
Input
• Accessory Plug and Unplug Detection, Accessory
Button Press Detection
• Integrated Power Supplies:
– Negative Charge Pump for Capless Headphone
Driver
– Two Low Dropout Voltage Regulators (LDOs)
for High Power Supply Rejection Ratio (PSRR)
• I²C Control
• Thermal Protection:
– Host Interrupt
• Power Supplies:
– Analog: 2.1 V
– Digital I/O: 1.8 V
– Battery: 2.3 to 5.5 V
• Package 6-mm × 6-mm 120-Pin PBGA
1.2 Applications
• Mobile and Smart Phones
• MP3 Players
• Handheld Devices
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
a 1-V_rms capability 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 V_rms capability
to a typical 32-Ω load or 1.4 V_rms 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. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.