Headphone Amplifier. TPA6139A2 Datasheet

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TPA6139A2
SLOS700C – JANUARY 2011 – REVISED APRIL 2016
TPA6139A2 DirectPath™ 25-mW Headphone Amplifier With Programmable-Fixed Gain
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-kΩ 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.
DAC
SOC
+
Programmable
Gain
-1x to -10x TPA 6139A2
LEFT
Headphone
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA6139A2
TSSOP (14)
VQFN (16)
5.00 mm × 4.40 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
DAC
RIGHT
+
Copyright © 2016 Texas Instruments Incorporated
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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.


TPA6139A2 Datasheet
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Part TPA6139A2
Description 25-mW Headphone Amplifier
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TPA6139A2
SLOS700C – JANUARY 2011 – REVISED APRIL 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Programmable Gain Settings.................................... 6
7.7 Typical Characteristics, Line Driver .......................... 7
8 Parameter Measurement Information .................. 8
9 Detailed Description .............................................. 9
9.1 Overview ................................................................... 9
9.2 Functional Block Diagram ......................................... 9
9.3 Feature Description................................................... 9
9.4 Device Functional Modes........................................ 10
10 Application and Implementation........................ 12
10.1 Application Information.......................................... 12
10.2 Typical Application ............................................... 13
11 Power Supply Recommendations ..................... 15
12 Layout................................................................... 15
12.1 Layout Guidelines ................................................. 15
12.2 Layout Example .................................................... 16
13 Device and Documentation Support ................. 18
13.1 Device Support...................................................... 18
13.2 Documentation Support ........................................ 18
13.3 Community Resources.......................................... 18
13.4 Trademarks ........................................................... 18
13.5 Electrostatic Discharge Caution ............................ 18
13.6 Glossary ................................................................ 18
14 Mechanical, Packaging, and Orderable
Information ........................................................... 18
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (May 2011) to Revision C
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section. ................................................................................................. 1
• Removed Ordering Information table .................................................................................................................................... 1
• Changed 600-Ω Load value to 32-Ω Load in Features ......................................................................................................... 1
• Changed 5-kΩ Load value to 600-Ω Load in Features .......................................................................................................... 1
• Changed 2 Vms to 2 Vrms in Description ............................................................................................................................. 1
• Added RL valuse for the MIN and MAX columns and changed the TYP value from 5 to 32 in the Recommended
Operating Conditions .............................................................................................................................................................. 4
• Changed Line Driver Amplifiers subsection title to DirectPath Headphone Driver ............................................................... 9
Changes from Original (January 2011) to Revision A
Page
• Changed "2.5-mW" to "25-mW" in Title line and added revision A - May 2011 pub date to Header infomation ................... 1
• Changed conditions statement from "RIN = 10 kΩ, Rfb = 20 kΩ" to "Step = –2V/V" for TYP CHARA, LINE DRIVER
section .................................................................................................................................................................................... 7
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5 Device Comparison Table
Headphone Channels
Output Power (W)
Supply Voltage Range
PSRR (dB)
Pin and Package
TPA6132A2
Stereo
0.025
2.3 to 5.5
100
16-pin WQFN
6 Pin Configuration and Functions
PW Package
14-Pin TSSOP
Top View
1 –IN_L
2 OUT_L
3 GND
4 MUTE
5 VSS
6 CN
7 NC
–IN_R 14
OUT_R 13
GAIN 12
GND 11
VDD 10
CP 9
NC 8
TPA6139A2
SLOS700C – JANUARY 2011 – REVISED APRIL 2016
TPA6136A2
Stereo
0.025
2.3 to 5.5
100
16-pin DSBGA
TPA6139A2
Stereo
0.025
3 to 3.6
80
16-pin VQFN, 14-pin
TSSOP
TPA6141A2
Stereo
0.025
2.5 to 5.5
105
16-pin DSBGA
RGT Package
16-Pin VQFN
Top View
OUT_L 1
GND 2
GND 3
MUTE 4
12 OUT_R
11 GAIN
10 GND
9 VDD
NAME
CN
CP
PIN
TSSOP
6
9
VQFN
6
8
GAIN
12 11
GND
–IN_L
–IN_R
MUTE
NC
OUT_L
OUT_R
VDD
VSS
3, 11
1
14
4
7, 8
2
13
10
5
2, 3, 10
16
13
4
7. 14, 15
1
12
9
5
(1) I = input, O = output, P = power
Pin Functions
TYPE (1)
DESCRIPTION
I/O Charge Pump flying capacitor negative connection
I/O Charge Pump flying capacitor positive connection
I
Gain set programming pin; connect a resistor to ground.
See Table 2 for recommended resistor values
P Ground
I Negative input, left channel
I Negative input, right channel
I MUTE, active low
— No internal connection
O Output, left channel
O Output, right channel
P Supply voltage, connect to positive supply
O Change Pump negative supply voltage
Copyright © 2011–2016, Texas Instruments Incorporated
Product Folder Links: TPA6139A2
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