TPA6139A2

更新时间： 2024-11-20 11:58:27

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
22页	825K
描述
DirectPathâ¢ 25-mW Headphone Amplifier With Programmable-Fixed Gain

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TPA6139A2 数据手册

TPA6139A2

www.ti.com

SLOS700B –JANUARY 2011–REVISED JUNE 2012

DirectPath™ 25-mW Headphone Amplifier With

Programmable-Fixed Gain

Check for Samples: TPA6139A2

FEATURES

DESCRIPTION

The TPA6139A2PW is a 25mW Pop-Free stereo

•

DirectPath™

Head Phone driver designed to reduce component

count, board space and cost. It is ideal for single

supply electronics where size and cost are critical

design parameters.

–

Eliminates Pop/Clicks

Eliminates Output DC-Blocking Capacitors

3 V to 3.6 V Supply voltage

•

Low Noise and THD

The TPA6139A2 does not require a power supply

greater than 3.3V to generate its 25mW, nor does it

require a split rail power supply.

–

SNR > 105 dB at –1x Gain

Typical Vn < 15 μVms 20-20kHz at –1x Gain

Designed using TI’s patented DIRECTPATH™

technology which integrates a charge pump to

generate a negative supply rail that provides a clean,

pop-free ground biased output. The TPA6139A2 is

capable of driving 25mW into 32Ω and 2Vms into a

600Ω load. DIRECTPATH also allows the removal of

the costly output DC-blocking capacitors.

THD+N < 0.003% at 10kΩ Load and –1x

Gain

•

25 mW into 600 Ω Load

2 Vrms Output Voltage into 5kΩ Load

Single Ended Input and Output

Programmable Gain Select Reduces

Component Count

The device has fixed gain single ended inputs with a

gain select pin. Using a single resistor on this pin, the

designer can choose from 13 internal programmable

gain settings to match the line driver with the Codec

output level. It also reduces the component count and

board space.

–

13x Gain Values

•

Active Mute With More Than 80dB Attenuation

Short Circuit and Thermal Protection

±8kV HBM ESD Protected Outputs

Headphone outputs have ±8kV HBM ESD protection

enabling

a simple ESD protection circuit. The

APPLICATIONS

TPA6139A2 has built-in active mute control with more

that 80dB attenuation for pop-free mute on/off control.

•

PDP / LCD TV

Blu-ray Disc™, DVD Players

Mini/Micro Combo Systems

Soundcards

The TPA6139A2 is available in a 14-pin TSSOP and

a 16-pin QFN. For a pin compatible 2vrms line driver

see DRV612.

–

DAC

LEFT

Headphone

Programmable

Gain

-1x to -10x

TPA6139A2

SOC

DAC

–

RIGHT

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

DirectPath, DIRECTPATH are trademarks of Texas Instruments.

Blu-ray Disc is a trademark of Blu-ray Disc Association.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...22

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与TPA6139A2相关器件

型号	品牌	获取价格	描述	数据表
TPA6139A2_16	TI	获取价格	25mW Headphone Amplifier
TPA6139A2PW	TI	获取价格	DirectPathâ¢ 25-mW Headphone Amplifier With
TPA6139A2PWR	TI	获取价格	DirectPathâ¢ 25-mW Headphone Amplifier With
TPA6139A2RGTR	TI	获取价格	DirectPathâ¢ 25-mW Headphone Amplifier With
TPA6139A2RGTT	TI	获取价格	DirectPathâ¢ 25-mW Headphone Amplifier With
TPA6140A2	TI	获取价格	CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIE
TPA6140A2YFF	TI	获取价格	CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIE
TPA6140A2YFFR	TI	获取价格	CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIE
TPA6140A2YFFT	TI	获取价格	CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIE
TPA6141A2	TI	获取价格	CLASS-G DIRECTPATH™ STEREO HEADPHONE AMPLIFIE

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