Texas Instruments TPA112EVM, TPA112MSOPEVM, TPA112DR, TPA112DGNR, TPA112D Datasheet
...
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TP A112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
150-mW Stereo Output
D
Wide Range of Supply Voltages
– Fully Specified for 3.3 V and 5 V
Operation
– Operational From 2.5 V to 5.5 V
D
Thermal and Short-Circuit Protection
D
Surface Mount Packaging
– PowerP AD MSOP
– SOIC
D
Standard Operational Amplifier Pinout
description
The TPA112 is a stereo audio power amplifier packaged in an 8-pin PowerPAD MSOP package capable of
delivering 150 mW of continuous RMS power per channel into 8-Ω loads. Amplifier gain is externally configured
by means of two resistors per input channel and does not require external compensation for settings of 1 to 10.
THD+N when driving an 8-Ω load from 5 V is 0.1% at 1 kHz, and less than 2% across the audio band of 20 Hz
to 20 kHz. For 32-Ω loads, the THD+N is reduced to less than 0.06% at 1 kHz, and is less than 1% across the
audio band of 20 Hz to 20 kHz. For 10-kΩ loads, the THD+N performance is 0.01% at 1 kHz, and less than 0.02%
across the audio band of 20 Hz to 20 kHz.
functional block diagram
Short-Circuit
Protection
Over-Temperature
Protection
V
DD
8
V
DD
IN1–
IN1+
IN2–
IN2+
2
3
6
5
VO1
1
VO2
7
4
R
F
R
F
R
F
R
I
R
I
R
I
R
I
V
DD/2
C
I
C
I
C
I
C
I
LIN–
LIN+
RIN–
RIN+
R
F
R
O
R
O
R
C
R
C
C
C
C
C
To Headphone
Jack
(See TPA152)
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.
1
2
3
4
8
7
6
5
VO1
IN1–
IN1+
GND
V
DD
VO2
IN2–
IN2+
D OR DGN PACKAGE
(TOP VIEW)
PowerPAD is a trademark of Texas Instruments.
TPA112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
AVAILABLE OPTIONS
PACKAGED DEVICES
T
A
SMALL OUTLINE
†
(D)
MSOP
†
(DGN)
MSOP
Symbolization
–40°C to 85°C TPA112D TPA112DGN TI AAD
†
The D and DGN package is available in left-ended tape and reel only (e.g., TPA112DR,
TPA112DGNR).
Terminal Functions
TERMINAL
NAME NO.
I/O
DESCRIPTION
GND 4 I GND is the ground connection.
IN1– 2 I IN1– is the inverting input for channel 1.
IN1+ 3 I IN1+ is the noninverting input for channel 1.
IN2– 6 I IN2– is the inverting input for channel 2.
IN2+ 5 I IN2+ is the noninverting input for channel 2.
V
DD
8 I VDD is the supply voltage terminal.
VO1 1 O VO1 is the audio output for channel 1.
VO2 7 O VO2 is the audio output for channel 2.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
†
Supply voltage, VDD 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage, VI –0.3 V to VDD + 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input current, II ±2.5 µA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, I
O
±250 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation internally limited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating junction temperature range, TJ –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 725 mW 5.8 mW/°C 464 mW 377 mW
DGN 2.14 W
‡
17.1 mW/°C 1.37 W 1.11 W
‡
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
T exas Instruments Recommended
Board for PowerPAD
on page 33 of the before mentioned document.
recommended operating conditions
MIN MAX UNIT
Supply voltage, V
DD
2.5 5.5 V
Operating free-air temperature, T
A
–40 85 °C
TPA112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
dc electrical characteristics at TA = 25°C, VDD = 3.3 V
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IO
Input offset voltage 5 mV
PSRR Power supply rejection ratio VDD = 3.2 V to 3.4 V 83 dB
I
DD(q)
Supply current 1.5 3 mA
I
DD(SD)
Supply current in SHUTDOWN mode 10 50 µA
Z
I
Input impedance >1 MΩ
ac operating characteristics, VDD= 3.3 V, TA = 25°C, RL = 8 Ω
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
P
O
Output power (each channel) THD ≤ 0.1% 70
†
mW
THD+N Total harmonic distortion + noise PO = 70 mW, 20–20 kHz 2%
B
OM
Maximum output power BW G = 10, THD <5% >20 kHz
Phase margin Open loop 58°
S
VRR
Supply ripple rejection f = 1 kHz 68 dB
Channel/channel output separation f = 1 kHz 86 dB
SNR Signal-to-noise ratio PO = 100 mW 100 dB
V
n
Noise output voltage 9.5 µV(rms)
†
Measured at 1 kHz
dc electrical characteristics at TA = 25°C, VDD = 5 V
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IO
Input offset voltage 5 mV
PSRR Power supply rejection ratio VDD = 4.9 V to 5.1 V 76 dB
I
DD(q)
Supply current 1.5 3 mA
I
DD(SD)
Supply current in SHUTDOWN mode 60 100 µA
Z
I
Input impedance >1 MΩ
ac operating characteristics, VDD=5 V, TA = 25°C, RL = 8 Ω
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
P
O
Output power (each channel) THD ≤ 0.1% 70† mW
THD+N Total harmonic distortion + noise PO = 150 mW, 20–20 kHz 2%
B
OM
Maximum output power BW G = 10, THD <5% >20 kHz
Phase margin Open loop 56°
S
VRR
Supply ripple rejection f = 1 kHz 68 dB
Channel/channel output separation f = 1 kHz 86 dB
SNR Signal-to-noise ratio PO = 150 mW 100 dB
V
n
Noise output voltage 9.5 µV(rms)
†
Measured at 1 kHz
TPA112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
ac operating characteristics, VDD= 3.3 V, TA = 25°C, RL = 32 Ω
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
P
O
Output power (each channel) THD ≤ 0.1% 40
†
mW
THD+N Total harmonic distortion + noise PO = 30 mW, 20–20 kHz 0.5%
B
OM
Maximum output power BW G = 10, THD <2% >20 kHz
Phase margin Open loop 58°
S
VRR
Supply ripple rejection f = 1 kHz 68 dB
Channel/channel output separation f = 1 kHz 86 dB
SNR Signal-to-noise ratio PO = 100 mW 100 dB
V
n
Noise output voltage 9.5 µV(rms)
†
Measured at 1 kHz
ac operating characteristics, VDD=5 V, TA = 25°C, RL = 32 Ω
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
P
O
Output power (each channel) THD ≤ 0.1% 40† mW
THD+N Total harmonic distortion + noise PO = 60 mW, 20–20 kHz 0.4%
B
OM
Maximum output power BW G = 10, THD <2% >20 kHz
Phase margin Open loop 56°
S
VRR
Supply ripple rejection f = 1 kHz 68 dB
Channel/channel output separation f = 1 kHz 86 dB
SNR Signal-to-noise ratio PO = 150 mW 100 dB
V
n
Noise output voltage 9.5 µV(rms)
†
Measured at 1 kHz
TPA112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
THD+N Total harmonic distortion plus noise vs Frequency
1, 2, 4, 5, 7, 8,
10, 11, 13, 14,
16, 17, 34, 36
vs Power output
3, 6, 9,
12, 15, 18
PSSR Power supply rejection ratio vs Frequency 19, 20
V
n
Output noise voltage vs Frequency 21, 22
Crosstalk vs Frequency
23 – 26,
37, 38
Mute attenuation vs Frequency 27, 28
Open-loop gain vs Frequency 29, 30
Phase margin vs Frequency 29, 30
Phase vs Frequency 39 – 44
Output power vs Load resistance 31, 32
I
CC
Supply current vs Supply voltage 33
SNR Signal-to-noise ratio vs Voltage gain 35
Closed-loop gain vs Frequency 39 – 44
Power dissipation/amplifier vs Output power 45, 46
TPA112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 1
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
AV = 10
AV = 5
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
AV = 1
VDD = 3.3 V
PO = 30 mW
CB = 1 µ F
RL = 32 Ω
Figure 2
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VDD = 3.3 V
AV = 1 V/V
RL = 32 Ω
CB = 1 µ F
PO = 10 mW
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
PO = 15 mW
PO = 30 mW
Figure 3
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
10 kHz
0.1
0.01
1
10
THD+N –Total Harmonic Distortion + Noise – %
PO – Output Power – mW
11050
VDD = 3.3 V
RL = 32 Ω
AV = 1 V/V
CB = 1 µF
20 kHz
1 kHz
20 Hz
Figure 4
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VDD = 5 V
PO = 60 mW
RL = 32 Ω
CB = 1 µF
AV = 10 mW
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
AV = 5 mW
AV = 1 mW
TPA112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VDD = 5 V
RL = 32 Ω
AV = 1 V/V
CB = 1 µF
PO = 15 mW
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
PO = 30 mW
PO = 60 mW
Figure 6
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
THD+N –Total Harmonic Distortion + Noise – %
20 kHz
0.1
0.01
1
10
PO – Output Power – W
VDD = 5 V
AV = 1 V/V
RL = 32 Ω
CB = 1 µF
10 kHz
1 kHz
20 Hz
0.002 0.01 0.1 0.2
Figure 7
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VDD = 3.3 V
RL = 10 kΩ
PO = 100 µF
CB = 1 µF
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
AV = 5 mW
AV = 2 mW
Figure 8
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VDD = 3.3 V
RL = 10 kΩ
AV = 1 V/V
CB = 1 µF
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
PO = 45 µW
PO = 130 µW
PO = 90 µW
TPA112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 9
5 10 100 200
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
THD+N –Total Harmonic Distortion + Noise – %
20 Hz
0.01
0.001
1
10
PO – Output Power – µW
10 kHz
1 kHz
20 Hz
0.1
VDD = 3.3 V
RL = 10 k Ω
AV = 1 V/V
CB = 1 µF
Figure 10
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VDD = 5 V
RL = 10 kΩ
PO = 300 µW
CB = 1 µF
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
AV = 1
AV = 2
AV = 5
Figure 11
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VDD = 5 V
RL = 10 kΩ
AV = 1 V/V
CB = 1 µF
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
PO = 300 µW
PO = 200 µW
PO = 100 µW
Figure 12
0.1
0.01
0.001
1
10
5 10 100 500
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
VDD = 5 V
RL = 10 kΩ
AV = 1 V/V
CB = 1 µ F
THD+N –Total Harmonic Distortion + Noise – %
20 Hz
1 kHz
20 kHz
10 kHz
PO – Output Power – µW
TPA112
150-mW STEREO AUDIO POWER AMPLIFIER
SLOS212C – AUGUST 1998 – REVISED MARCH 2000
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 13
20
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
THD+N – Total Harmonic Distortion Plus Noise – %
f – Frequency – Hz
2
0.1
0.01
0.001
100 1k 10k 20k
1
AV = 1
AV = 2
AV = 5
VDD = 3.3 V
PO = 75 mW
RL = 8 Ω
CB = 1 µF
Figure 14
0.1
0.01
0.001
1
10
20 100 1k 10k 20k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
VDD = 3.3 V
RL = 8 Ω
AV = 1 V/V
THD+N –Total Harmonic Distortion + Noise – %
f – Frequency – Hz
PO = 75 mW
PO = 15 mW
PO = 30 mW
Figure 15
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
20 kHz
0.1
0.01
1
10
THD+N –Total Harmonic Distortion + Noise – %
PO – Output Power – W
10m 0.1 0.3
VDD = 3.3 V
RL = 8 Ω
AV = 1 V/V
10 kHz
1 kHz
20 Hz
Figure 16
20
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
THD+N – Total Harmonic Distortion Plus Noise – %
f – Frequency – Hz
2
0.1
0.01
0.001
100 1k 10k 20k
1
AV = 1
AV = 2
AV = 5
VDD = 5 V
PO = 100 mW
RL = 8 Ω
CB = 1 µF
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