Texas Instruments TPA302EVM, TPA302DR, TPA302D Datasheet
TPA302
300-mW STEREO AUDIO POWER AMPLIFIER
SLOS174B – JANUARY 1997 – REVISE MARCH 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
300-mW Stereo Output
D
PC Power Supply Compatibility 5-V and
3.3-V Specified Operation
D
Shutdown Control
D
Internal Mid-Rail Generation
D
Thermal and Short-Circuit Protection
D
Surface-Mount Packaging
D
Functional Equivalent of the LM4880
description
The TP A302 is a stereo audio power amplifier capable of delivering 250 mW of continuous average power into
an 8-Ω load at less than 0.06% THD+N from a 5-V power supply or up to 300 mW at 1% THD+N. The TPA302
has high current outputs for driving small unpowered speakers at 8 Ω or headphones at 32 Ω. For headphone
applications driving 32-Ω loads, the TP A302 delivers 60 mW of continuous average power at less than 0.06%
THD+N. The amplifier features a shutdown function for power-sensitive applications as well as internal thermal
and short-circuit protection. The amplifier is available in an 8-pin SOIC (D) package that reduces board space
and facilitates automated assembly.
typical application circuit
Audio
Input
Bias
Control
6
1
5
7
VO1
VO2
V
DD
2
8
3
4
IN1
BYPASS
SHUTDOWN
VDD/2
C
I
R
I
R
F
C
B
C
S
Audio
Input
C
I
R
I
IN2
V
DD
–
+
–
+
C
C
C
C
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.
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.
1
2
3
4
8
7
6
5
VO1
SHUTDOWN
BYPASS
IN2
IN1
GND
V
DD
VO2
D PACKAGE
(TOP VIEW)
TPA302
300-mW STEREO AUDIO POWER AMPLIFIER
SLOS174B – JANUARY 1997 – REVISE MARCH 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
AVAILABLE OPTIONS
PACKAGED DEVICES
T
A
SMALL OUTLINE
†
(D)
–40°C to 85°C TPA302D
†
The D packages are available taped and reeled. To order a taped
and reeled part, add the suffix R (e.g., TPA302DR)
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 junction temperature range, T
J
–40°C to 150° C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–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
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
D 731 mW 5.8 mW/°C 460 mW 380 mW
recommended operating conditions
MIN MAX UNIT
Supply voltage, V
DD
2.7 5.5 V
Operating free-air temperature, T
A
–40 85 °C
dc electrical characteristics at specified free-air temperature, VDD = 3.3 V (unless otherwise noted)
PARAMETER TEST CONDITION MIN TYP MAX UNIT
I
DD
Supply current 2.25 5 mA
V
IO
Input offset voltage 5 20 mV
PSRR Power supply rejection ratio VDD = 3.2 V to 3.4 V 55 dB
I
DD(SD)
Quiescent current in shutdown 0.6 20 µA
ac operating characteristics, VDD = 3.3 V, TA = 25°C, RL = 8 Ω (unless otherwise noted)
PARAMETER TEST CONDITION MIN TYP MAX UNIT
THD < 0.08% 100
p
p
Gain = –1,
THD < 1% 125
POOutput power
,
f = 1 kHz
THD < 0.08%, RL = 32 Ω 25
mW
THD < 1%, RL = 32 Ω 35
B
OM
Maximum output power bandwidth Gain = 10, 1% THD 20 kHz
B
1
Unity gain bandwidth Open loop 1.5 MHz
Channel separation f = 1 kHz 75 dB
Supply ripple rejection ratio f = 1 kHz 45 dB
V
n
Noise output voltage Gain = –1 10 µVrms
TPA302
300-mW STEREO AUDIO POWER AMPLIFIER
SLOS174B – JANUARY 1997 – REVISE MARCH 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
dc electrical characteristics at specified free-air temperature, VDD = 5 V (unless otherwise noted)
PARAMETER TEST CONDITION MIN TYP MAX UNIT
I
DD
Supply current 4 10 mA
V
OO
Output offset voltage See Note 1 5 20 mV
PSRR Power supply rejection ratio VDD = 4.9 V to 5.1 V 65 dB
I
DD(SD)
Quiescent current in shutdown 0.6 µA
ac operating characteristics, VDD = 5 V, TA = 25°C, RL = 8 Ω (unless otherwise noted)
PARAMETER TEST CONDITION MIN TYP MAX UNIT
THD < 0.06% 250
p
p
Gain = –1,
THD < 1% 300
POOutput power
,
f = 1 kHz
THD < 0.06%, RL = 32 Ω 60
mW
THD < 1%, RL = 32 Ω 80
B
OM
Maximum output power bandwidth Gain = 10, 1% THD 20 kHz
B
1
Unity gain bandwidth Open loop 1.5 MHz
Channel separation f = 1 kHz 75 dB
Supply ripple rejection ratio f = 1 kHz 45 dB
V
n
Noise output voltage Gain = –1 10 µVrms
typical application
250 mW per Channel at RL = 8 Ω
60 mW per Channel at RL = 32 Ω
Stereo
RLR
L
C
C
C
C
VO1
VO2
BYPASS
IN2–
IN1–
C
B
R
F
R
F
R
I
R
I
C
I
C
I
R
L
Stereo Audio
Input
Bias
Control
From Shutdown
Control Circuit (TPA4860)
C
B
V
DD
4
3
2
1
8
6
5
TPA302
300-mW STEREO AUDIO POWER AMPLIFIER
SLOS174B – JANUARY 1997 – REVISE MARCH 2000
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
p
vs Frequency
1–3, 7–9,
13–15, 19–21
THD+N
Total harmonic distortion plus noise
vs Output power
4–6, 10–12
16–18, 22–24
pp
vs Supply voltage 25
IDDSupply current
yg
vs Free-air temperature 26
V
n
Output noise voltage vs Frequency 27, 28
Maximum package power dissipation vs Free-air temperature 29
Power dissipation vs Output power 30, 31
P
Omax
Maximum output power vs Free-air temperature 32, 33
p
p
vs Load resistance 34
POOutput power
vs Supply voltage 35
Open loop response 36
Closed loop response 37
Crosstalk vs Frequency 38, 39
Supply ripple rejection ratio vs Frequency 40, 41
Figure 1
1
0.1
0.010
10
20 100 1 k 10 k 20 k
THD + N – Total Harmonic Distortion Plus Noise – %
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VCC = 5 V
PO = 250 mW
RL = 8 Ω
AV = –1 V/V
VO1
VO2
Figure 2
1
0.1
0.010
10
20 100 1 k 10 k 20 k
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VCC = 5 V
PO = 250 mW
RL = 8 Ω
AV = –5 V/V
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
TPA302
300-mW STEREO AUDIO POWER AMPLIFIER
SLOS174B – JANUARY 1997 – REVISE MARCH 2000
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 3
1
0.1
0.010
10
20 100 1 k 10 k 20 k
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VCC = 5 V
PO = 250 mW
RL = 8 Ω
AV = –10 V/V
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
Figure 4
1
0.1
0.010
10
0.01 0.1 1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
VCC = 5 V
f = 20 Hz
RL = 8 Ω
AV = –1 V/V
PO – Output Power – W
THD + N – Total Harmonic Distortion Plus Noise – %
VO2
VO1
Figure 5
1
0.1
0.010
10
0.01 0.1 1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
VCC = 5 V
f = 1 kHz
RL = 8 Ω
AV = –1 V/V
PO – Output Power – W
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
Figure 6
1
0.1
0.010
10
0.01 0.1 1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
VCC = 5 V
f = 20 kHz
RL = 8 Ω
AV = –1 V/V
PO – Output Power – W
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
TPA302
300-mW STEREO AUDIO POWER AMPLIFIER
SLOS174B – JANUARY 1997 – REVISE MARCH 2000
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 7
1
0.1
0.010
10
20 100 1 k 10 k 20 k
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VCC = 5 V
PO = 60 mW
RL = 32 Ω
AV = –1 V/V
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
Figure 8
1
0.1
0.010
10
20 100 1 k 10 k 20 k
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VCC = 5 V
PO = 60 mW
RL = 32 Ω
AV = –5 V/V
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
Figure 9
1
0.1
0.010
10
20 100 1 k 10 k 20 k
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VCC = 5 V
PO = 60 mW
RL = 32 Ω
AV = –10 V/V
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
Figure 10
1
0.1
0.010
10
0.01 0.1 1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
VCC = 5 V
f = 20 Hz
RL = 32 Ω
AV = –1 V/V
PO – Output Power – W
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
TPA302
300-mW STEREO AUDIO POWER AMPLIFIER
SLOS174B – JANUARY 1997 – REVISE MARCH 2000
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 11
1
0.1
0.010
10
0.01 0.1 1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
VCC = 5 V
f = 1 kHz
RL = 32 Ω
AV = –1 V/V
PO – Output Power – W
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
Figure 12
1
0.1
0.010
10
0.01 0.1 1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
VCC = 5 V
f = 20 kHz
RL = 32 Ω
AV = –1 V/V
PO – Output Power – W
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
Figure 13
1
0.1
0.010
10
20 100 1 k 10 k 20 k
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VCC = 3.3 V
PO = 100 mW
RL = 8 Ω
AV = –1 V/V
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
Figure 14
1
0.1
0.010
10
20 100 1 k 10 k 20 k
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VCC = 3.3 V
PO = 100 mW
RL = 8 Ω
AV = –5 V/V
THD + N – Total Harmonic Distortion Plus Noise – %
VO1
VO2
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