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TWL6040 Datasheet (PDF) - Texas Instruments

TWL6040 Datasheet PDF - Texas Instruments
Part # TWL6040_V02
Download  TWL6040 Download

File Size   458.17 Kbytes
Page   15 Pages
Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments
Description TWL6040 8-Channel Low-Power Audio Codec for Portable Applications

TWL6040 Datasheet (PDF)

Go To PDF Page Download Datasheet
TWL6040 Datasheet PDF - Texas Instruments

Part # TWL6040_V02
Download  TWL6040 Click to download

File Size   458.17 Kbytes
Page   15 Pages
Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments
Description TWL6040 8-Channel Low-Power Audio Codec for Portable Applications

TWL6040 Datasheet (HTML) - Texas Instruments

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TWL6040 Product details

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-Vrms 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 Vrms capability
to a typical 32-Ω load or 1.4 Vrms to a typical 16-Ω load.
Stereo speaker path has filterless class-D outputs with 1.5-W capability per channel. Output power
maximization supply connections to an external boost is supported. Speaker drivers also support hearing
aid coil loads. For vibrator and haptic feedback support, the TWL6040 has two PWM channels with
independent input signals from DL4 or inter-integrated circuit (I2C).
Vibrator drivers are differential H-bridge outputs, enabling fast acceleration and deceleration of vibrator
motor. An external driver for a hearing aid coil or a piezo speaker requiring high voltage can be connected
to line outputs.
The TWL6040 supports three differential microphone inputs (MMIC, HMIC, and SMIC) and a stereo lineinput
(AFML, AFMR) multiplexed to two parallel ADCs. The PDM output from the ADCs is transmitted to
the OMAP4 processor through UL0 and UL1. AFML, AFMR inputs can also be looped to analog outputs
(LB0, LB1).
Two LDOs provide a voltage of 2.1 V to bias analog microphones (MBIAS and HBIAS). The maximum
output current is 2 mA for each analog bias, allowing up to two microphones on one bias. Two LDOs
provide a voltage of 1.8 V/1.85 V to bias digital microphones (DBIAS1 and DBIAS2). One bias generator
can bias several digital microphones at the same time, with a total maximum output current of 10 mA.
The TWL6040 has an integrated negative charge pump (NCP) and two LDOs (HS LDO and LS LDO) for
high PSRR. The only external supply needed is 2.1 V, which is available from the 2.1-V DC-DC of the
TWL6030 power-management IC (PMIC) in the OMAP4 system. By powering audio from low-noise 2.1-V
DC-DC of low power consumption, high dynamic range and high output swing at headset output are
achieved. All other supply inputs can be directly connected to battery or system 1.8-V I/O.
Two integrated PLLs enable operation from a 12-, 19.2-, 26-, and 38.4-MHz system clock (MCLK) or, in
LP playback mode, from a 32-kHz sleep clock (CLK32K). The frequency plan is based on a 48-kS/s audio
data rate for all channels, and host processor uses sample-rate converters to interface with different
sample rates (for example, 44.1 kHz). In the specific case of low-power audio playback, the TWL6040
supports the 44.1-kS/s and 48-kS/s rates. Transitions between sample rates or input clocks are seamless.
Accessory plug and unplug detections are supported (PLUGDET). Some headsets have a manual switch
for submitting send/end signal to the terminal through the microphone input pin. This feature is supported
by a periodic accessory button press detection to minimize current consumption in sleep mode. Detection
cycle properties can be programmed according to system requirements.




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About Texas Instruments


Texas Instruments (TI) is a publicly traded company that designs and manufactures semiconductor and computer technology products.

It was founded in 1930 and is headquartered in Dallas, Texas.

TI is a global leader in the production of analog and digital signal processing (DSP) integrated circuits, as well as embedded processors and other microcontroller products.

The company serves customers in a variety of industries, including automotive, communications, computing, industrial, and consumer electronics.

TI's product portfolio includes data converters, amplifiers and comparators, power management ICs, microcontrollers, sensors, and wireless connectivity solutions, among others.

TI is committed to innovation and customer satisfaction, and has a long history of delivering high-quality, reliable products to its customers.

With a focus on sustainability and energy efficiency, TI is dedicated to making a positive impact on the world through its technology and products.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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