TI TPA0253

TPA0253
1-W MONO AUDIO POWER AMPLIFIER
WITH HEADPHONE DRIVE
SLOS280B – JANUARY 2000 – REVISED MARCH 2000
D
D
D
D
D
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D
D
D
D
Ideal for Notebook Computers, PDAs, and
Other Small Portable Audio Devices
1 W Into 8-Ω From 5-V Supply
0.3 W Into 8-Ω From 3-V Supply
Stereo Head Phone Drive
Mono (BTL) Signal Created by Summing
Left and Right Signals Internally
Wide Power Supply Compatibility
2.5 V to 5.5 V
Low Supply Current
– 3.2 mA Typical at 5 V
– 2.7 mA Typical at 3 V
Shutdown Control . . . 1 µA Typical
Shutdown Pin is TTL Compatible
–40°C to 85°C Operating Temperature
Range
Space-Saving, Thermally-Enhanced MSOP
Packaging
DGQ PACKAGE
(TOP VIEW)
FILT–CAP
SHUTDOWN
VDD
BYPASS
RIN
1
2
3
4
5
10
9
8
7
6
LO/MO–
LIN
GND
ST/MN
RO/MO+
description
The TPA0253 is a 1-W mono bridge-tied-load (BTL) amplifier designed to drive speakers with as low as 8-Ω
impedance. The mono signal is created by summing left and right inputs internally. The amplifier can be
reconfigured on-the-fly to drive two stereo single-ended (SE) signals into head phones. This makes the device
ideal for use in small notebook computers, PDAs, digital personal audio players, anyplace a mono speaker and
stereo head phones are required. From a 5-V supply, the TPA0253 can delivery 1-W of power into a 8-Ω speaker.
The gain of the input stage is set by the user-selected input resistor and a 50-kΩ internal feedback resistor
(AV = – RF/ RI). The power stage is internally configured with a gain of –1.25 V/V in SE mode, and –2.5 V/V in
BTL mode. Thus, the overall gain of the amplifier is 62.5 kΩ/ RI in SE mode and 125 kΩ/ RI in BTL mode. The
input terminals are high-impedance CMOS inputs, and can be used as summing nodes.
The TPA0253 is available in the 10-pin thermally-enhanced MSOP package (DGQ) and operates over an
ambient temperature range of –40°C to 85°C.
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.
PowerPAD is a trademark of Texas Instruments Incorporated.
Copyright  2000, Texas Instruments Incorporated
PRODUCTION DATA information is 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
TPA0253
1-W MONO AUDIO POWER AMPLIFIER
WITH HEADPHONE DRIVE
SLOS280B – JANUARY 2000 – REVISED MARCH 2000
CB
4
BYPASS
VDD
3
VDD
GND
1
8
BYPASS
FILT–CAP
VDD
50 kΩ
50 kΩ
1.25*R
100 kΩ
5
Right
Audio
Input
CI
RIN
M
U
X
–
R
–
+
CC
RO/MO+
6
+
RI
BYPASS
BYPASS
100 kΩ
50 kΩ
Stereo/Mono
Control
50 kΩ
ST/MN
7
LO/MO–
10
50 kΩ
1.25*R
Left
Audio
Input
CI
RI
9
LIN
M
U
X
–
R
–
+
+
1 kΩ
BYPASS
BYPASS
From
System Control
2
2
SHUTDOWN
CC
Shutdown
and Depop
Circuitry
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TPA0253
1-W MONO AUDIO POWER AMPLIFIER
WITH HEADPHONE DRIVE
SLOS280B – JANUARY 2000 – REVISED MARCH 2000
AVAILABLE OPTIONS
PACKAGED DEVICES
MSOP†
(DGQ)
TA
MSOP
SYMBOLIZATION
– 40°C to 85°C
TPA0253DGQ
AEL
† The DGQ package are available taped and reeled. To order a taped and reeled part, add the
suffix R to the part number (e.g., TPA0253DGQR).
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
FILT–CAP
1
SHUTDOWN
2
I
TTL–compatible shutdown terminal
VDD
3
I
Positive power supply
BYPASS
4
I
Mid–rail bias voltage
Terminal used to filter power supply
RIN
5
I
Right–channel input terminal
RO/MO+
6
O
Right–output in SE mode and mono positive output in BTL mode
ST/MN
7
I
Selects between Stereo and Mono mode. When held high, the amplifier is in SE stereo mode, while held
low, the amplifier is in BTL mono mode.
GND
8
LIN
9
I
Left–channel input terminal
LO/MO–
10
O
Left–output in SE mode and mono negative output in BTL mode.
Ground terminal
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)§
Supply voltage, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to VDD +0.3 V
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . internally limited (see Dissipation Rating Table)
Operating free-air temperature range, TA (see Table 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C
Operating junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 150°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
§ 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 RATING TABLE
PACKAGE
TA ≤ 25°C
2.14 W¶
DERATING FACTOR
TA = 70°C
1.37 W
TA = 85°C
1.11 W
DGQ
17.1 mW/°C
¶ Please see the Texas Instruments document, PowerPAD Thermally Enhanced Package Application Report
(literature number SLMA002), for more information on the PowerPAD package. The thermal data was
measured on a PCB layout based on the information in the section entitled Texas Instruments Recommended
Board for PowerPAD on page 33 of the before mentioned document.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
TPA0253
1-W MONO AUDIO POWER AMPLIFIER
WITH HEADPHONE DRIVE
SLOS280B – JANUARY 2000 – REVISED MARCH 2000
recommended operating conditions
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Supply voltage, VDD
High-level input voltage, VIH
VDD = 3 V
VDD = 5 V
ST/MN
MAX
2.5
5.5
V
V
4.5
2
VDD = 3 V
VDD = 5 V
ST/MN
UNIT
2.7
SHUTDOWN
Low-level input voltage, VIL
MIN
1.65
V
2.75
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SHUTDOWN
0.8
Operating free-air temperature, TA
– 40
°C
85
electrical characteristics at specified free-air temperature, VDD = 3 V, TA = 25°C (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
VIO = 0.1%,
VDD = 2.9 V to 3.1 V,
Gain = 8 dB
VDD = 3.3 V,
VDD = 3.3 V,
VI = VDD
VI = 0
MIN
TYP
MAX
UNIT
|VOO|
Output offset voltage (measured differentially)
PSRR
Power supply rejection ratio
|IIH|
High-level input current
|IIL|
Low-level input current
ZI
IDD
Input impedance
50
Supply current
2.7
4
mA
IDD(SD)
Supply current, shutdown mode
1
10
µA
BTL mode
30
mV
1
µA
65
dB
µA
1
kΩ
operating characteristics, VDD = 3 V, TA = 25°C, RL = 4 Ω, f = 1 kHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
BTL mode,
Gain = 14 dB
SE mode,
RL = 32 Ω
PO
Output power, see Note 1
THD = 0.1%
Gain = 1.9 dB
THD + N
Total harmonic distortion plus noise
Maximum output power bandwidth
PO = 250 mW,
Gain = 1.9 dB,
f = 20 Hz to 20 kHz
BOM
Supple
Su
le ri
ripple
le rejection ratio
f = 1 kHz
kHz,
CB = 0
0.47
47 µF
Vn
Noise output voltage
CB = 0
0.47
47 µF,
µF
f = 20 Hz to 20 kHz
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TYP
MAX
UNIT
300
30
mW
0.2%
THD = 2%
NOTE 1: Output power is measured at the output terminals of the device at f = 1 kHz.
4
MIN
THD = 0.1%,
20
BTL mode
46
SE mode
68
BTL mode
83
SE mode
33
kHz
dB
µVRMS
TPA0253
1-W MONO AUDIO POWER AMPLIFIER
WITH HEADPHONE DRIVE
SLOS280B – JANUARY 2000 – REVISED MARCH 2000
electrical characteristics at specified free-air temperature, VDD = 5 V, TA = 25°C (unless otherwise
noted)
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PARAMETER
TEST CONDITIONS
VIO = 0,
VDD = 4.9 V to 5.1 V,
Gain = 8 dB
VDD = 5.5 V,
VDD = 5.5 V,
VI = VDD
VI = 0
MIN
TYP
|VOO|
Output offset voltage (measured differentially)
PSRR
Power supply rejection ratio
|IIH|
High-level input current
|IIL|
Low-level input current
ZI
IDD
Input impedance
50
Supply current
IDD(SD)
Supply current, shutdown mode
BTL mode
MAX
UNIT
30
mV
1
µA
1
µA
3.2
4.8
mA
1
10
µA
62
dB
kΩ
operating characteristics, VDD = 5 V, TA = 25°C, RL = 4 Ω, f = 1 kHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
THD = 0.1%,
BTL mode
PO
Output power,
power see Note 1
THD = 0.1%,
SE mode,
THD + N
Total harmonic distortion plus
noise
PO = 1 W,
f = 20 Hz to 20 kHz
BOM
Maximum output power bandwidth
Gain = 8 dB,
THD = 2%
Supple ripple rejection ratio
f = 1 kHz
kHz,
CB = 0
0.47
47 µF
Noise output voltage
47 µF,
µF
CB = 0
0.47
f = 20 Hz to 20 kHz
Vn
MIN
RL = 32 Ω
TYP
MAX
UNIT
1
W
85
mW
0.33%
20
BTL mode
46
SE mode
60
BTL mode
85
SE mode
34
kHz
dB
µVRMS
NOTE 1: Output power is measured at the output terminals of the device at f = 1 kHz.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
TPA0253
1-W MONO AUDIO POWER AMPLIFIER
WITH HEADPHONE DRIVE
SLOS280B – JANUARY 2000 – REVISED MARCH 2000
MECHANICAL DATA
DGQ (S-PDSO-G10)
PowerPAD PLASTIC SMALL-OUTLINE PACKAGE
0,27
0,17
0,50
10
0,25 M
6
Thermal Pad
(See Note D)
0,15 NOM
4,98
4,78
3,05
2,95
Gage Plane
0,25
1
0°– 6°
5
3,05
2,95
0,69
0,41
Seating Plane
1,07 MAX
0,15
0,05
0,10
4073273/A 04/98
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion.
The package thermal performance may be enhanced by bonding the thermal pad to an external thermal plane.
This pad is electrically and thermally connected to the backside of the die and possibly selected leads. The dimension of the thermal
pad is 1.40 mm (height as illustrated) × 1.80 (width as illustrated) mm (maximum). The pad is centered on the bottom of the package.
PowerPAD is a trademark of Texas Instruments Incorporated.
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
IMPORTANT NOTICE
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any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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Copyright  2000, Texas Instruments Incorporated