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TPA6139A2 Datasheet(PDF) 1 Page - Texas Instruments

No. de Pieza. TPA6139A2
Descripción  25mW Headphone Amplifier
Descarga  28 Pages
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Fabricante  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
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TPA6139A2 Datasheet(HTML) 1 Page - Texas Instruments

 
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SOC
TPA 6139A2
RIGHT
DAC
DAC
LEFT
Headphone
Programmable
Gain
-1x to -10x
+
+
Copyright © 2016 Texas Instruments Incorporated
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Folder
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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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.
TPA6139A2
SLOS700C – JANUARY 2011 – REVISED APRIL 2016
TPA6139A2 DirectPath™ 25-mW Headphone Amplifier With Programmable-Fixed Gain
1
1 Features
1
DirectPath™
Eliminates Pops and Clicks
Eliminates Output DC-Blocking Capacitors
3-V to 3.6-V Supply Voltage
Low Noise and THD
SNR > 105 dB at –1x Gain
Typical Vn < 15
μVms 20 to 20 kHz at –1x
Gain
THD+N < 0.003% at 10-k
Ω Load and –1x Gain
25 mW into 32-
Ω Load
2-Vrms Output Voltage into 600-
Ω Load
Single-Ended Input and Output
Programmable Gain Select Reduces Component
Count
13x Gain Values
Active Mute With More Than 80-dB Attenuation
Short-Circuit and Thermal Protection
±8-kV HBM ESD Protected Outputs
2 Applications
PDP and LCD TVs
Blu-ray Discs™, DVD Players
Mini and Micro Combo Systems
Soundcards
Functional Block Diagram
3 Description
The
TPA6139A2
is
a
25-mW,
pop-free
stereo
headphone 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.
The TPA6139A2 device does not require a power
supply greater than 3.3 V to generate its 25 mW, nor
does it require a split rail power supply.
The TPA6139A2 device was 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 25 mW into a 32-
Ω
load and 2 Vrms into a 600-
Ω load. DirectPath also
allows the removal of the costly output DC-blocking
capacitors.
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.
Headphone outputs have ±8-kV HBM ESD protection
enabling
a
simple
ESD
protection
circuit.
The
TPA6139A2 has built-in active mute control with more
that 80-dB attenuation for pop-free mute ON and OFF
control.
The TPA6139A2 device is available in a 14-pin
TSSOP and a 16-pin QFN. For a pin-compatible, 2-
Vrms line driver see DRV612.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA6139A2
TSSOP (14)
5.00 mm × 4.40 mm
VQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.


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