TI TPA6133A2RTJT

TPA6133A2
www.ti.com
SLOS821 – JUNE 2013
138-mW DIRECTPATH™ STEREO HEADPHONE AMPLIFIER
Check for Samples: TPA6133A2
FEATURES
DESCRIPTION
•
The TPA6133A2 is a stereo DirectPath™ headphone
amplifier with GPIO control. The TPA6133A2 has
minimal quiescent current consumption, with a typical
IDD of 4.2 mA, making it optimal for portable
applications. The GPIO control allows the device to
be put in a low power shutdown mode.
1
2
•
•
•
•
•
•
•
DirectPath™ Ground-Referenced Outputs
– Eliminates Output DC Blocking Capacitors
– Reduces Board Area
– Reduces Component Height and Cost
– Full Bass Response Without Attenuation
Power Supply Voltage Range: 2.5 V to 5.5 V
High Power Supply Rejection Ratio
(>100 dB PSRR)
Differential Inputs for Maximum Noise
Rejection (69 dB CMRR)
High-Impedance Outputs When Disabled
Advanced Pop and Click Suppression
Circuitry
GPIO Control for Shutdown
20 Pin, 4 mm x 4 mm QFN Package
The TPA6133A2 is a high fidelity amplifier with an
SNR of 93 dB. A PSRR greater than 100 dB enables
direct-to-battery connections without compromising
the listening experience. The output noise of 12
μVrms (typical A-weighted) provides a minimal noise
background during periods of silence. Configurable
differential inputs and high CMRR allow for maximum
noise rejection in the noisy environment of a mobile
device.
TPA6133A2 is available in a 4 by 4 mm QFN
package.
APPLICATIONS
•
•
•
•
Mobile Phones
Audio Headsets
Notebook Computers
High Fidelity Applications
SIMPLIFIED APPLICATION DIAGRAM
GPIO
VBAT
2.2KQ
Audio Source
TEST1
SD
TEST2
0.47uF
LEFT_OUTM
LEFTINM
0.47uF
RIGHT_OUTM
HPLEFT
LEFTINP
LEFT_OUTP
0.47uF
0.47uF
RIGHT_OUTP
HPRIGHT
RIGHTINM
GND
RIGHTINP
GND
CPP
CPN
CPVSS
VDD
VDD
VBAT
1uF
1uF
1uF
1uF
1
2
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 is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated
TPA6133A2
SLOS821 – JUNE 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
FUNCTIONAL BLOCK DIAGRAM
TEST2
TEST1
LEFTINM
HPLEFT
LEFT
LEFTINP
INPUT
STAGE
DEPOP
RIGHTINM
HPRIGHT
RIGHT
RIGHTINP
THERMAL
CURRENT
LIMIT
CPP
SD
CHARGE
PUMP
CPN
POWER
MANAGEMENT
SHUTDOWN
CONTROL
CPVSS
VDD
GND
VDD
GND
Headphone channels and the charge pump are activated by toggling the SD pin to logic 1. The charge pump
generates a negative supply voltage for the output amplifiers. This allows a 0 V bias at the outputs, eliminating
the need for bulky output capacitors. The thermal block detects faults and shuts down the device before damage
occurs. The current limit block prevents the output current from getting high enough to damage the device. The
De-Pop block eliminates audible pops during power-up, power-down, and amplifier enable and disable events.
2
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
www.ti.com
SLOS821 – JUNE 2013
20
19
18
CPVSS
CPN
CPP
VDD
GND
RJT PACKAGE
(Top VIEW)
17
16
1
15
LEFTINM
CPVSS
2
14
LEFTINP
HPLEFT
Top View
3
GND
13
GND
4
12
RIGHTINP
VDD
5
11
RIGHTINM
HPRIGHT
GND
10
GND
9
TEST1
8
TEST2
7
SD
6
Top View QFN Package (RTJ)
PIN FUNCTIONS
PIN
PIN QFN
INPUT,
OUTPUT,
POWER
VDD
20
P
Charge pump voltage supply. VDD must be connected to the common VDD voltage
supply. Decouple to GND (pin 19 ) with its own 1 μF capacitor.
GND
19
P
Charge pump ground. GND must be connected to common supply GND. It is
recommended that this pin be decoupled to the VDD of the charge pump pin (pin 20 on
the QFN).
CPP
18
P
Charge pump flying capacitor positive terminal. Connect one side of the flying capacitor
to CPP.
CPN
17
P
Charge pump flying capacitor negative terminal. Connect one side of the flying
capacitor to CPN.
LEFTINM
1
I
Left channel negative differential input. Impedance must be matched to LEFTINP.
Connect the left input to LEFTINM when using single-ended inputs.
LEFTINP
2
I
Left channel positive differential input. Impedance must be matched to LEFTINM. AC
ground LEFTINP near signal source while maintaining matched impedance to
LEFTINM when using single-ended inputs.
CPVSS
15, 16
P
Negative supply generated by the charge pump. Decouple to pin 19 or a GND plane.
Use a 1 μF capacitor.
HPLEFT
14
O
Headphone left channel output. Connect to left terminal of headphone jack.
RIGHTINM
5
I
Right channel negative differential input. Impedance must be matched to RIGHTINP.
Connect the right input to RIGHTINM when using single-ended inputs.
RIGHTINP
4
I
Right channel positive differential input. Impedance must be matched to RIGHTINM.
AC ground RIGHTINP near signal source while maintaining matched impedance to
RIGHTINM when using single-ended inputs.
GND
3, 9, 10, 13
P
Analog ground. Must be connected to common supply GND. It is recommended that
this pin be used to decouple VDD for analog. Use pin 13 to decouple pin 12 on the QFN
package.
VDD
12
P
Analog VDD. VDD must be connected to common VDD supply. Decouple with its own 1μF capacitor to analog ground (pin 13).
SD
6
I
Shutdown. Active low logic. 5V tolerant input.
NAME
DESCRIPTION
3
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
SLOS821 – JUNE 2013
www.ti.com
PIN FUNCTIONS (continued)
PIN
NAME
PIN QFN
INPUT,
OUTPUT,
POWER
TEST2
7
I
Factory test pins. Pull up to VDD supply. See Applications Diagram.
TEST1
8
I
Factory test pins. Pull up to VDD supply. See Applications Diagram.
HPRIGHT
11
O
Headphone light channel output. Connect to the right terminal of the headphone jack.
Die Pad
P
Solder the thermal pad on the bottom of the QFN package to the GND plane of the
PCB. It is required for mechanical stability and will enhance thermal performance.
Thermal pad
DESCRIPTION
ABSOLUTE MAXIMUM RATINGS (1)
over operating free-air temperature range, TA = 25°C (unless otherwise noted)
Supply voltage, VDD
MAX
UNIT
6
V
CPVSS-0.2 V to minimum of
(3.6 V, VDD+0.2 V)
RIGHTINx, LEFTINx
Input voltage
MIN
–0.3
SD, TEST1, TEST2
–0.3
Output continuous total power dissipation
7
V
See Dissipation Rating Table
Operating free-air temperature range, TA
–40
85
°C
Operating junction temperature range, TJ
–40
150
°C
Storage temperature range, Tstg
–65
150
°C
3
kV
ESD Protection
HBM
12.8 Ω
Minimum Load Impedance
(1)
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
DISSIPATION RATINGS TABLE
(1)
(2)
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING
FACTOR (1) (2)
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
RTJ
4100 mW
41 mW/°C
2250 mW
1640 mW
Derating factor measured with JEDEC High K board: 1S2P - One signal layer and two plane layers.
See JEDEC Standard 51-3 for Low-K board, JEDEC Standard 51-7 for High-K board, and JEDEC
Standard 51-12 for using package thermal information. Please see JEDEC document page for
downloadable copies: http://www.jedec.org/download/default.cfm.
AVAILABLE OPTIONS
(1)
(2)
TA
PACKAGED DEVICES (1)
PART NUMBER
SYMBOL
–40°C to 85°C
20-pin, 4 mm × 4 mm QFN
TPA6133A2RTJ (2)
SIZ
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
Web site at www.ti.com.
The RTJ package is only available taped and reeled. To order, add the suffix “R” to the end of the part number for a reel of 3000, or add
the suffix “T” to the end of the part number for a reel of 250 (that is, TPA6133A2RTJR).
RECOMMENDED OPERATING CONDITIONS
Supply voltage, VDD
VIH
High-level input voltage
TEST1, TEST2, SD
VIL
Low-level input voltage
SD
TA
Operating free-air temperature
MIN
MAX
2.5
5.5
1.3
–40
4
UNIT
V
V
0.35
V
85
°C
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
www.ti.com
SLOS821 – JUNE 2013
ELECTRICAL CHARACTERISTICS
TA = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
|VOS|
Output offset voltage
VDD = 2.5 V to 5.5 V, inputs grounded
135
400
μV
PSRR
DC Power supply rejection ratio VDD = 2.5 V to 5.5 V, inputs grounded
–101
-85
dB
CMRR
Common mode rejection ratio
VDD = 2.5 V to 5.5 V
|IIH|
High-level input current
VDD = 5.5 V, VI = VDD
|IIL|
Low-level input current
VDD = 5.5 V, VI = 0 V
IDD
Supply current
–69
TEST1, TEST2
dB
1
SD
10
SD
VDD = 2.5 V to 5.5 V, SD = VDD
Shutdown mode, VDD = 2.5V to 5.5 V, SD = 0 V
µA
1
µA
4.2
6
mA
0.08
1
µA
OPERATING CHARACTERISTICS
VDD = 3.6 V , TA = 25°C, RL = 16 Ω (unless otherwise noted)
PARAMETER
PO
Output power
TEST CONDITIONS
Stereo, Outputs out of phase,
THD = 1%, f = 1 kHz, Gain = +4 dB
MIN
VDD = 2.5V
63
VDD = 3.6V
133
VDD = 5V
142
f = 100 Hz
THD+N
Total harmonic distortion
plus noise
PO = 35 mW
Supply ripple rejection ratio
MAX
UNIT
mW
0.0096%
f = 1 kHz
0.007%
f = 20 kHz
0.0021%
200 mVpp ripple, f = 217 Hz
kSVR
TYP
-94.3
200 mVpp ripple, f = 1 kHz
-85
-92
200 mVpp ripple, f = 20 kHz
-77.1
SD = VDD
1.597
dB
Av
Channel DC Gain
ΔAv
Gain matching
0.1
%
Slew rate
0.4
V/µs
12
µVRMS
Vn
Noise output voltage
fosc
Charge pump switching
frequency
VDD = 3.6V, A-weighted, Gain = +4 dB
300
Start-up time from shutdown
Signal-to-noise ratio
Thermal shutdown
ZO
HW Shutdown HP output
impedance
CO
Output capacitance
500
kHz
4.8
ms
36.6
kΩ
93
dB
Threshold
180
°C
Hysteresis
35
°C
112
Ω
80
pF
Differential input impedance
SNR
381
V/V
Po = 35 mW
SD = 0 V, measured output to ground.
5
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
SLOS821 – JUNE 2013
www.ti.com
Table of Graphs
FIGURE
Total harmonic distortion + noise
versus Output power
1–4
Total harmonic distortion + noise
versus Frequency
5–12
Supply voltage rejection ratio
versus Frequency
13-14
Common mode rejection ratio
versus Frequency
15-16
Crosstalk
versus Frequency
17-18
TYPICAL CHARACTERISTICS
C(PUMP, DECOUPLE, ,BYPASS, CPVSS) = 1 μF, CI = 2.2µF.
All THD + N graphs taken with outputs out of phase (unless otherwise noted).
TOTAL HARMONIC DISTORTION +
NOISE
vs
OUTPUT POWER
TOTAL HARMONIC DISTORTION +
NOISE
vs
OUTPUT POWER
10
10
10
VDD = 3.6V
f = 1kHz
RL = 16Ÿ
Stereo
VDD = 3.6V
f = 1kHz
RL = 32Ÿ
Stereo
VDD = 2.5V
f = 1kHz
RL = 16Ÿ
Stereo
0.1
0.01
1
THD+N (%)
1
THD+N (%)
1
THD+N (%)
TOTAL HARMONIC DISTORTION +
NOISE
vs
OUTPUT POWER
0.1
0.01
0.1
VDD = 2.5V
0.01
Out of Phase
Out of Phase
In Phase
In Phase
VDD = 3.0V
VDD = 3.6V
0.001
0.01
0.1
0.001
0.01
1
0.1
Output Power (W)
VDD = 5.0V
0.001
0.001
1
0.01
Output Power (W)
0.1
1
Output Power (W)
C007
C007
C006
Figure 1.
Figure 2.
Figure 3.
TOTAL HARMONIC DISTORTION +
NOISE
vs
OUTPUT POWER
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
10
1
1
VDD = 2.5V
RL = 16Ÿ
VDD = 2.5V
f = 1kHz
RL = 32Ÿ
Stereo
VDD = 3.0V
RL = 16Ÿ
1
0.1
THD+N (%)
0.1
THD+N (%)
THD+N (%)
0.1
0.01
0.01
VDD = 2.5V
0.01
VDD = 3.0V
Po = 1mW
VDD = 3.6V
Po = 4mW
VDD = 5.0V
0.001
0.001
Po = 5mW
Po = 20mW
Po = 20mW
Po = 40mW
0.001
0.01
0.1
1
Output Power (W)
0.001
20
200
2k
Frequency (Hz)
C006
Figure 4.
20k
20
200
2k
C004
Figure 5.
6
20k
Frequency (Hz)
C004
Figure 6.
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
www.ti.com
SLOS821 – JUNE 2013
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
1
1
1
VDD = 3.6V
RL = 16Ÿ
VDD = 5.0V
RL = 16Ÿ
VDD = 2.5V
RL = 32Ÿ
0.01
THD+N (%)
0.1
THD+N (%)
0.1
THD+N (%)
0.1
0.01
0.01
Po = 5mW
Po = 5mW
Po = 35mW
Po = 50mW
Po = 70mW
Po = 1mW
Po = 4mW
Po = 80mW
0.001
Po = 20mW
0.001
20
200
2k
20k
0.001
20
200
Frequency (Hz)
2k
20k
20
2k
20k
Frequency (Hz)
C004
C004
Figure 7.
Figure 8.
Figure 9.
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
1
1
1
VDD = 3.0V
RL = 32Ÿ
VDD = 3.6V
RL = 32Ÿ
VDD = 5.0V
RL = 32Ÿ
0.01
THD+N (%)
0.1
THD+N (%)
0.1
THD+N (%)
0.1
0.01
0.01
Po = 5mW
Po = 5mW
Po = 20mW
Po = 35mW
Po = 40mW
Po = 5mW
Po = 50mW
Po = 70mW
0.001
Po = 80mW
0.001
20
200
2k
20k
0.001
20
200
Frequency (Hz)
2k
20k
20
200
Frequency (Hz)
2k
20k
Frequency (Hz)
C004
C004
C004
Figure 10.
Figure 11.
Figure 12.
SUPPLY VOLTAGE REJECTION
RATIO
vs
FREQUENCY
SUPPLY VOLTAGE REJECTION
RATIO
vs
FREQUENCY
COMMON MODE REJECTION RATIO
vs
FREQUENCY
0
0
0
VDD = 2.5V
Vrip = 0.1VPK
RL = 16Ÿ
Ci = 1µF
Stereo
-40
-60
-80
VDD = 3.6V
VDD = 5.0V
-40
-60
-80
-100
-100
-120
-120
VDD = 2.5V
Vo = 0.1Vrms
RL = 16Ÿ
Ci = 1µF
Stereo
-10
Common-mode Rejection Ratio (dB)
-20
VDD = 5.0V
VDD = 2.5V
Vrip = 0.1VPK
RL = 32Ÿ
Ci = 1µF
Stereo
VDD = 3.6V
Supply Voltage Rejection Ratio (dB)
-20
200
Frequency (Hz)
C004
Supply Voltage Rejection Ratio (dB)
TOTAL HARMONIC DISTORTION +
NOISE
vs
FREQUENCY
VDD = 3.6V
VDD = 5.0V
-20
-30
-40
-50
-60
-70
20
200
2k
20k
Frequency (Hz)
-80
20
200
2k
20k
Frequency (Hz)
C010
Figure 13.
20
200
2k
Figure 14.
20k
Frequency (Hz)
C010
C010
Figure 15.
7
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
SLOS821 – JUNE 2013
www.ti.com
COMMON MODE REJECTION RATIO
vs
FREQUENCY
CROSSTALK
vs
FREQUENCY
0
0
0
VDD = 2.5V
Vo = 0.1Vrms
RL = 32Ÿ
Ci = 1µF
Stereo
-10
VDD = 3.6V
VDD = 2.5V
Vo = 1Vrms
RL = 16Ÿ
Ci = 1µF
Stereo
-10
VDD = 5.0V
VDD = 3.6V
VDD = 5.0V
-20
-30
-30
-30
-40
-50
Crosstalk (dB)
-20
-40
-50
-60
-70
-70
-70
-80
-80
2k
20k
Frequency (Hz)
-80
20
200
2k
20k
Frequency (Hz)
C010
Figure 16.
VDD = 5.0V
-50
-60
200
VDD = 3.6V
-40
-60
20
VDD = 2.5V
Vo = 1Vrms
RL = 32Ÿ
Ci = 1µF
Stereo
-10
-20
Crosstalk (dB)
Common-mode Rejection Ratio (dB)
CROSSTALK
vs
FREQUENCY
20
200
2k
Figure 17.
8
20k
Frequency (Hz)
C010
C010
Figure 18.
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
www.ti.com
SLOS821 – JUNE 2013
APPLICATION INFORMATION
VDD
SIMPLIFIED APPLICATIONS CIRCUIT
CPN
CPP
VDD
20
19
18
CPVSS
1uF
GND
1uF
17
16
1
15
LEFTINM
CPVSS
0.47uF
1uF
2
14
LEFTINP
HPLEFT
0.47uF
Top View
3
13
GND
VDD
GND
4
12
RIGHTINP
VDD
0.47uF
1uF
5
11
RIGHTINM
HPRIGHT
0.47uF
GND
10
GND
9
TEST1
8
TEST2
7
SD
6
VDD
SD
2.2KQ
Headphone Amplifiers
Single-supply headphone amplifiers typically require dc-blocking capacitors. The capacitors are required because
most headphone amplifiers have a dc bias on the outputs pin. If the dc bias is not removed, the output signal is
severely clipped, and large amounts of dc current rush through the headphones, potentially damaging them. The
top drawing in Figure 19 illustrates the conventional headphone amplifier connection to the headphone jack and
output signal.
DC blocking capacitors are often large in value. The headphone speakers (typical resistive values of 16 Ω or 32
Ω) combine with the dc blocking capacitors to form a high-pass filter. Equation 1 shows the relationship between
the load impedance (RL), the capacitor (CO), and the cutoff frequency (fC).
1
fc +
2pRLC O
(1)
CO can be determined using Equation 2, where the load impedance and the cutoff frequency are known.
1
CO +
2pRLf c
(2)
If fc is low, the capacitor must then have a large value because the load resistance is small. Large capacitance
values require large package sizes. Large package sizes consume PCB area, stand high above the PCB,
increase cost of assembly, and can reduce the fidelity of the audio output signal.
9
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
SLOS821 – JUNE 2013
www.ti.com
Two different headphone amplifier applications are available that allow for the removal of the output dc blocking
capacitors. The Capless amplifier architecture is implemented in the same manner as the conventional amplifier
with the exception of the headphone jack shield pin. This amplifier provides a reference voltage, which is
connected to the headphone jack shield pin. This is the voltage on which the audio output signals are centered.
This voltage reference is half of the amplifier power supply to allow symmetrical swing of the output voltages. Do
not connect the shield to any GND reference or large currents will result. The scenario can happen if, for
example, an accessory other than a floating GND headphone is plugged into the headphone connector. See the
second block diagram and waveform in Figure 19.
Conventional
VDD
CO
VOUT
CO
VDD/2
GND
Capless
VDD
VOUT
VBIAS
GND
VBIAS
DirectPath
TM
VDD
GND
VSS
Figure 19. Amplifier Applications
The DirectPath™ amplifier architecture operates from a single supply but makes use of an internal charge pump
to provide a negative voltage rail. Combining the user provided positive rail and the negative rail generated by
the IC, the device operates in what is effectively a split supply mode. The output voltages are now centered at
zero volts with the capability to swing to the positive rail or negative rail. The DirectPath™ amplifier requires no
output dc blocking capacitors, and does not place any voltage on the sleeve. The bottom block diagram and
waveform of Figure 19 illustrate the ground-referenced headphone architecture. This is the architecture of the
TPA6133A2.
Input-Blocking Capacitors
DC input-blocking capacitors block the dc portion of the audio source, and allow the inputs to properly bias.
Maximum performance is achieved when the inputs of the TPA6133A2 are properly biased. Performance issues
such as pop are optimized with proper input capacitors.
The dc input-blocking capacitors may be removed provided the inputs are connected differentially and within the
input common mode range of the amplifier, the audio signal does not exceed ±3 V, and pop performance is
sufficient.
10
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
TPA6133A2
www.ti.com
SLOS821 – JUNE 2013
CIN is a theoretical capacitor used for mathematical calculations only. Its value is the series combination of the dc
input-blocking capacitors, C(DCINPUT-BLOCKING). Use Equation 3 to determine the value of C(DCINPUT-BLOCKING). For
example, if CIN is equal to 0.22 μF, then C(DCINPUT-BLOCKING) is equal to about 0.47 μF.
1 C
CIN =
(DCINPUT-BLOCKING)
2
(3)
The two C(DCINPUT-BLOCKING) capacitors form a high-pass filter with the input impedance of the TPA6133A2. Use
Equation 3 to calculate CIN, then calculate the cutoff frequency using CIN and the differential input impedance of
the TPA6133A2, RIN, using Equation 4. Note that the differential input impedance changes with gain. See for
input impedance values. The frequency and/or capacitance can be determined when one of the two values are
given.
1
1
fc IN +
or C IN + 2p fc R
2p RIN C IN
IN IN
(4)
If a high pass filter with a -3 dB point of no more than 20 Hz is desired over all gain settings, the minimum
impedance would be used in the above equation. shows this to be 37 kΩ. The capacitor value by the above
equation would be 0.215 μF. However, this is CIN, and the desired value is for C(DCINPUT-BLOCKING). Multiplying CIN
by 2 yields 0.43 μF, which is close to the standard capacitor value of 0.47 μF. Place 0.47 μF capacitors at each
input terminal of the TPA6133A2 to complete the filter.
Charge Pump Flying Capacitor and CPVSS Capacitor
The charge pump flying capacitor serves to transfer charge during the generation of the negative supply voltage.
The CPVSS capacitor must be at least equal to the flying capacitor in order to allow maximum charge transfer.
Low ESR capacitors are an ideal selection, and a value of 1 µF is typical.
Decoupling Capacitors
The TPA6133A2 is a DirectPath™ headphone amplifier that requires adequate power supply decoupling to
ensure that the noise and total harmonic distortion (THD) are low. Use good low equivalent-series-resistance
(ESR) ceramic capacitors, typically 1.0 µF. Find the smallest package possible, and place as close as possible to
the device VDD lead. Placing the decoupling capacitors close to the TPA6133A2 is important for the performance
of the amplifier. Use a 10 μF or greater capacitor near the TPA6133A2 to filter lower frequency noise signals.
The high PSRR of the TPA6133A2 will make the 10 μF capacitor unnecessary in most applications.
Layout Recommendations
Exposed Pad On TPA6133A2RTJ Package
Solder the exposed metal pad on the TPA6133A2RTJ QFN package to the a pad on the PCB. The pad on the
PCB may be grounded or may be allowed to float (not be connected to ground or power). If the pad is grounded,
it must be connected to the same ground as the GND pins (3, 9, 10, 13, and 19). See the layout and mechanical
drawings at the end of the datasheet for proper sizing. Soldering the thermal pad improves mechanical reliability,
improves grounding of the device, and enhances thermal conductivity of the package.
GND Connections
The GND pin for charge pump should be decoupled to the charge pump VDD pin, and the GND pin adjacent to
the Analog VDD pin should be separately decoupled to each other.
Modes of Operation
The TPA6133A2 supports two modes of operation. When the SD pin is driven to logic 0, the device is in low
power mode where the charge pump is powered down, the headphone channel is disabled and the outputs are
weakly pulled to ground. When the SD pin is driven to logic 1, the device enters an active mode with charge
pump powered up and headphone channel enabled with channel gain of +4dB. The transition from inactive to
active and active to inactive states is done softly to avoid audible artifacts.
11
Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: TPA6133A2
PACKAGE OPTION ADDENDUM
www.ti.com
9-Aug-2013
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
(2)
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
TPA6133A2RTJR
ACTIVE
QFN
RTJ
20
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
SIZ
TPA6133A2RTJT
ACTIVE
QFN
RTJ
20
250
Green (RoHS
& no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
-40 to 85
SIZ
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
Samples
PACKAGE MATERIALS INFORMATION
www.ti.com
12-Aug-2013
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
B0
(mm)
K0
(mm)
P1
(mm)
W
Pin1
(mm) Quadrant
TPA6133A2RTJR
QFN
RTJ
20
3000
330.0
12.4
4.25
4.25
1.15
8.0
12.0
Q2
TPA6133A2RTJT
QFN
RTJ
20
250
180.0
12.4
4.25
4.25
1.15
8.0
12.0
Q2
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
12-Aug-2013
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
TPA6133A2RTJR
QFN
RTJ
20
3000
367.0
367.0
35.0
TPA6133A2RTJT
QFN
RTJ
20
250
210.0
185.0
35.0
Pack Materials-Page 2
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other
changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest
issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and
complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale
supplied at the time of order acknowledgment.
TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms
and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary
to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily
performed.
TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and
applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide
adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or
other intellectual property right relating to any combination, machine, or process in which TI components or services are used. Information
published by TI regarding third-party products or services does not constitute a license to use such products or services or a warranty or
endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the
third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration
and is accompanied by all associated warranties, conditions, limitations, and notices. TI is not responsible or liable for such altered
documentation. Information of third parties may be subject to additional restrictions.
Resale of TI components or services with statements different from or beyond the parameters stated by TI for that component or service
voids all express and any implied warranties for the associated TI component or service and is an unfair and deceptive business practice.
TI is not responsible or liable for any such statements.
Buyer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-related requirements
concerning its products, and any use of TI components in its applications, notwithstanding any applications-related information or support
that may be provided by TI. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which
anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause
harm and take appropriate remedial actions. Buyer will fully indemnify TI and its representatives against any damages arising out of the use
of any TI components in safety-critical applications.
In some cases, TI components may be promoted specifically to facilitate safety-related applications. With such components, TI’s goal is to
help enable customers to design and create their own end-product solutions that meet applicable functional safety standards and
requirements. Nonetheless, such components are subject to these terms.
No TI components are authorized for use in FDA Class III (or similar life-critical medical equipment) unless authorized officers of the parties
have executed a special agreement specifically governing such use.
Only those TI components which TI has specifically designated as military grade or “enhanced plastic” are designed and intended for use in
military/aerospace applications or environments. Buyer acknowledges and agrees that any military or aerospace use of TI components
which have not been so designated is solely at the Buyer's risk, and that Buyer is solely responsible for compliance with all legal and
regulatory requirements in connection with such use.
TI has specifically designated certain components as meeting ISO/TS16949 requirements, mainly for automotive use. In any case of use of
non-designated products, TI will not be responsible for any failure to meet ISO/TS16949.
Products
Applications
Audio
www.ti.com/audio
Automotive and Transportation
www.ti.com/automotive
Amplifiers
amplifier.ti.com
Communications and Telecom
www.ti.com/communications
Data Converters
dataconverter.ti.com
Computers and Peripherals
www.ti.com/computers
DLP® Products
www.dlp.com
Consumer Electronics
www.ti.com/consumer-apps
DSP
dsp.ti.com
Energy and Lighting
www.ti.com/energy
Clocks and Timers
www.ti.com/clocks
Industrial
www.ti.com/industrial
Interface
interface.ti.com
Medical
www.ti.com/medical
Logic
logic.ti.com
Security
www.ti.com/security
Power Mgmt
power.ti.com
Space, Avionics and Defense
www.ti.com/space-avionics-defense
Microcontrollers
microcontroller.ti.com
Video and Imaging
www.ti.com/video
RFID
www.ti-rfid.com
OMAP Applications Processors
www.ti.com/omap
TI E2E Community
e2e.ti.com
Wireless Connectivity
www.ti.com/wirelessconnectivity
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2013, Texas Instruments Incorporated