Texas Instruments TPA0132PWPR, TPA0132PWP, TPA0132EVM Datasheet
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Compatible With PC 99 Desktop Line-Out
Into 10-kΩ Load
D
Compatible With PC 99 Portable Into 8-Ω
Load
D
Internal Gain Control, Which Eliminates
External Gain-Setting Resistors
D
DC Volume Control From +20 dB to –40 dB
D
2-W/Ch Output Power Into 3-Ω Load
D
PC-Beep Input
D
Depop Circuitry
D
Stereo Input MUX
D
Fully Differential Input
D
Low Supply Current and Shutdown Current
D
Surface-Mount Power Packaging
24-Pin TSSOP PowerP AD
description
The TPA0132 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of
delivering 2 W of continuous RMS power per channel into 3-Ω loads. This device minimizes the number of
external components needed, which simplifies the design and frees up board space for other features. When
driving 1 W into 8-Ω speakers, the TP A0132 has less than 0.4% THD+N across its specified frequency range.
Included within this device is integrated depop circuitry that virtually eliminates transients that cause noise in
the speakers.
Amplifier gain is controlled by means of a dc voltage input on the VOLUME terminal. There are 31 discrete steps
covering the range of +20 dB (maximum volume setting) to –40 dB (minimum volume setting) in 2 dB steps.
When the VOLUME terminal exceeds 3.54 V, the device is muted. An internal input MUX allows two sets of
stereo inputs to the amplifier. In notebook applications, where internal speakers are driven as BTL and the line
outputs (often headphone drive) are required to be SE, the TP A0132 automatically switches into SE mode when
the SE/BTL
input is activated, and this effectively reduces the gain by 6 dB.
The TPA0132 consumes only 10 mA of supply current during normal operation. A miserly shutdown mode is
included that reduces the supply current to less than 150 µA.
The PowerPAD package (PWP) delivers a level of thermal performance that was previously achievable only
in TO-220-type packages. Thermal impedances of approximately 35°C/W are readily realized in multilayer PCB
applications. This allows the TP A0132 to operate at full power into 8-Ω loads at ambient temperatures of 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.
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
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
PWP PACKAGE
(TOP VIEW)
GND
PCB ENABLE
VOLUME
LOUT+
LLINEIN
LHPIN
PV
DD
RIN
LOUT–
LIN
BYPASS
GND
GND
RLINEIN
SHUTDOWN
ROUT+
RHPIN
V
DD
PV
DD
CLK
ROUT–
SE/BTL
PC-BEEP
GND
PowerPAD is a trademark of Texas Instruments Incorporated.
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
functional block diagram
ROUT+
–
+
–
+
R
MUX
32-Step
Volume
Control
PC
Beep
MUX
Control
Depop
Circuitry
Power
Management
–
+
–
+
L
MUX
32-Step
Volume
Control
RHPIN
RLINEIN
VOLUME
RIN
PC-BEEP
SE/BTL
LHPIN
LLINEIN
LIN
ROUT–
PV
DD
V
DD
BYPASS
SHUTDOWN
GND
LOUT+
LOUT–
PCB ENABLE
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
AVAILABLE OPTIONS
PACKAGED DEVICE
T
A
TSSOP
†
(PWP)
–40°C to 85°C TPA0132PWP
†
The PWP package is available taped and reeled. T o order a taped and reeled part,
add the suffix R to the part number (e.g., TPA0132PWPR).
Terminal Functions
TERMINAL
NAME NO.
I/O
DESCRIPTION
BYPASS 11 Tap to voltage divider for internal mid-supply bias generator
CLK 17 I
If a 47-nF capacitor is attached, the TPA0132 generates an internal clock. An external clock can override
the internal clock input to this terminal.
GND
1, 12
13, 24
Ground connection for circuitry. Connected to thermal pad.
LHPIN 6 I Left channel headphone input, selected when SE/BTL is held high
LIN 10 I Common left input for fully differential input. AC ground for single-ended inputs.
LLINEIN 5 I Left channel line negative input, selected when SE/BTL is held low
LOUT+ 4 O Left channel positive output in BTL mode and positive output in SE mode
LOUT– 9 O Left channel negative output in BTL mode and high-impedance in SE mode
PCB ENABLE 2 I
If this terminal is high, the detection circuitry for PC-BEEP is overridden and passes PC-BEEP through
the amplifier, regardless of its amplitude. If PCB ENABLE is floating or low, the amplifier continues to
operate normally .
PC-BEEP 14 I
The input for PC Beep mode. PC-BEEP is enabled when a > 1-V (peak-to-peak) square wave is input
to PC-BEEP or PCB ENABLE is high.
PV
DD
7, 18 I Power supply for output stage
RHPIN 20 I Right channel headphone input, selected when SE/BTL is held high
RIN 8 I Common right input for fully differential input. AC ground for single-ended inputs.
RLINEIN 23 I Right channel line input, selected when SE/BTL is held low
ROUT+ 21 O Right channel positive output in BTL mode and positive output in SE mode
ROUT– 16 O Right channel negative output in BTL mode and high-impedance in SE mode
SE/BTL 15 I
Input MUX control input. When this terminal is held high, the LHPIN or RHPIN and SE output is selected.
When this terminal is held low, the LLINEIN or RLINEIN and BTL output are selected.
SHUTDOWN 22 I
When held low, this terminal places the entire device, except PC-BEEP detect circuitry, in shutdown
mode.
V
DD
19 I Analog VDD input supply. This terminal needs to be isolated from PVDD to achieve highest performance.
VOLUME 3 I
VOLUME detects the dc level at the terminal and sets the gain for 31 discrete steps covering a range of
20 dB to –40 dB for dc levels of 0.15 V to 3.54. When the dc level is over 3.54 V, the device is muted.
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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, T
A
–40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 DERATING FACTOR TA = 70°C TA = 85°C
PWP 2.7 W
§
21.8 mW/°C 1.7 W 1.4 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
4.5
5.5
V
p
SE/BTL 4
High-level input voltage, V
IH
SHUTDOWN 2
V
p
SE/BTL 3
Low-level input voltage, V
IL
SHUTDOWN 0.8
V
Operating free-air temperature, T
A
–40
85
°C
electrical characteristics at specified free-air temperature, VDD = 5 V , TA = 25°C (unless otherwise
noted)
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
|VOO|
Output offset voltage (measured differentially)
VI = 0, AV = 2
25
mV
PSRR
Power supply rejection ratio
VDD = 4 V to 5 V
67
dB
|IIH| High-level input current
VDD = 5.5 V,
VI = V
DD
ÁÁÁÁÁ
Á
900
Á
Á
nA
|IIL| Low-level input current
VDD = 5.5 V,
VI = 0 V
900
nA
Z
I
Input impedance
See Figure 28
pp
BTL mode
10
15
IDDSupply current
SE mode
5
7.5
mA
I
DD(SD)
Supply current, shutdown mode
150
300
µA
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
operating characteristics, VDD = 5 V , T
A
= 25°C, R
L
= 4 Ω, Gain = 2 V/V , BTL mode (unless otherwise
noted)
PARAMETER TEST CONDITIONS
MIN TYP MAX UNIT
P
O
БББББББББББ
Output power
THD = 1%,
f = 1 kHz
2
W
THD + N
БББББББББББ
Total harmonic distortion plus noise
PO = 1 W,
f = 20 Hz to 15 kHz
0.4%
B
OM
БББББББББББ
Maximum output power bandwidth
THD = 5%
>15
kHz
БББББББББББ
pp
pp
f = 1 kHz,
BTL mode
65
БББББББББББ
Supply ripple rejection ratio
,
CB = 0.47 µF
SE mode
60
dB
p
CB = 0.47 µF,
BTL mode
34
V
n
БББББББББББ
Noise output voltage
B
µ
f = 20 Hz to 20 kHz
SE mode
44
µ
V
RMS
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
vs Output power 1, 4, 6, 8, 10
p
vs Gain 2
THD+N
Total harmonic distortion plus noise
vs Frequency 3, 5, 7, 9, 11
vs Output voltage 12
V
n
Output noise voltage vs Frequency 13
Supply ripple rejection ratio vs Frequency 14, 15
Crosstalk vs Frequency 16, 17, 18
Shutdown attenuation vs Frequency 19
SNR Signal-to-noise ratio vs Frequency 20
Closed loop response 21, 22
P
O
Output power vs Load resistance 23, 24
p
vs Output power 25, 26
PDPower dissipation
vs Ambient temperature 27
Z
I
Input impedance vs Gain 28
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 1
0.1%
0.01%
0.5 0.75 1 1.25 1.5 1.75 2
1%
10%
2.25 2.5 2.75 3
PO – Output Power – W
AV = +20 to 0 dB
f = 1 kHz
BTL
THD+N –Total Harmonic Distortion + Noise
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
RL = 8 Ω
RL = 3 Ω
RL = 4 Ω
Figure 2
0.01%
–40 –30 –20 –10 0
THD+N –Total Harmonic Distortion + Noise
A - Voltage Gain - dB
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
GAIN
1%
0.1%
10 20
V
PO = 1 W for AV≥6dB
VO = 1 V
RMS
for AV≤4 dB
RL = 8 Ω
BTL
Figure 3
0.01%
10%
20 100 1k 10k 20k
THD+N –Total Harmonic Distortion + Noise
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
1%
0.1%
RL = 3 Ω
AV = +20 to 0 dB
BTL
PO = 1.75 W
PO = 0.5 W
PO = 1 W
Figure 4
0.1%
0.01%
0.01 0.1
1%
10%
110
f = 20 Hz
f = 1 kHz
PO – Output Power – W
RL = 3 Ω
AV = +20 to 0 dB
BTL
THD+N –Total Harmonic Distortion + Noise
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
f = 20 kHz
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 5
0.1%
0.01%
20 100
1%
10%
1k 10k
f – Frequency – Hz
RL = 4 Ω
AV = +20 to 0 dB
BTL
THD+N –Total Harmonic Distortion + Noise
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
PO= 0.25 W
20k
PO= 1 W
PO=1.5 W
Figure 6
0.1%
0.01%
0.01 0.1
1%
10%
110
f = 20 Hz
f = 1 kHz
PO – Output Power – W
THD+N –Total Harmonic Distortion + Noise
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
f = 20 kHz
RL = 4 Ω
AV = +20 to 0 dB
BTL
Figure 7
0.01%
10%
20 100 1k 10k 20k
THD+N –Total Harmonic Distortion + Noise
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
1%
0.1%
PO = 0.25 W
PO = 0.5 W
PO = 1 W
RL = 8 Ω
AV = +20 to 0 dB
BTL
Figure 8
0.1%
0.01%
0.01 0.1
1%
10%
110
f = 20 Hz
f = 1 kHz
PO – Output Power – W
THD+N –Total Harmonic Distortion + Noise
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
f = 20 kHz
RL = 8 Ω
AV = +20 to 0 dB
BTL
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 9
0.1%
0.01%
20
1%
10%
10k
f – Frequency – Hz
THD+N –Total Harmonic Distortion + Noise
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
PO = 25 mW
20k
RL = 32 Ω
AV = +14 to 0 dB
SE
PO = 50 mW
PO = 75 mW
100 1k
0.001%
Figure 10
0.1%
0.01%
0.01 0.1
1%
10%
1
f = 20 Hz
f = 1 kHz
PO – Output Power – W
THD+N –Total Harmonic Distortion + Noise
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT POWER
f = 20 kHz
RL = 32 Ω
AV = +14 to 0 dB
SE
Figure 11
0.001%
10%
20 100 1k 10k 20k
THD+N –Total Harmonic Distortion + Noise
f – Frequency – Hz
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
FREQUENCY
1%
0.1%
VO = 1 V
RMS
0.01%
RL = 10 kΩ
AV = +14 to 0 dB
SE
Figure 12
THD+N –Total Harmonic Distortion + Noise
TOTAL HARMONIC DISTORTION PLUS NOISE
vs
OUTPUT VOLTAGE
PO = 20 kHz
VO – Output Voltage – V
RMS
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0.001%
0.01%
0.1%
1%
10%
RL = 10 kΩ
AV = +14 to 0 dB
SE
PO = 1 kHz
PO = 20 Hz
TPA0132
2-W STEREO AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL
SLOS223B – MAY 1999 – REVISED MARCH 2000
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 13
120
0
0 100
140
160
1k 10k
f – Frequency – Hz
VDD = 5 V
BW = 22 Hz to 22 kHz
RL = 4 Ω
OUTPUT NOISE VOLTAGE
vs
FREQUENCY
AV = +20 dB
20k
AV = +6 dB
– Output Noise Voltage – VµV
n
RMS
20
40
60
80
100
Figure 14
–100
–120
20 100
–80
1k 10k
RL = 8 Ω
CB = 0.47 µF
BTL
Supply Ripple Rejection Ratio – dB
SUPPLY RIPPLE REJECTION RATIO
vs
FREQUENCY
AV = +6 dB
–60
–40
–20
0
f – Frequency – Hz
20k
AV = +20 dB
Figure 15
–100
–120
20 100
–80
1k 10k
RL = 32 Ω
CB = 0.47 µF
SE
SUPPLY RIPPLE REJECTION RATIO
vs
FREQUENCY
AV = +6 dB
–60
–40
–20
0
f – Frequency – Hz
20k
AV = +14 dB
Supply Ripple Rejection Ratio – dB
Figure 16
–120
–80
20 100 1k 10k 20k
Crosstalk – dB
f – Frequency – Hz
CROSSTALK
vs
FREQUENCY
–90
–100
–110
PO = 1 W
RL = 8 Ω
AV = +20 dB
BTL
–70
–60
LEFT TO RIGHT
RIGHT TO LEFT
–50
–40
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