TPA0152
2-W STEREO AUDIO POWER AMPLIFIER
WITH DIGITAL VOLUME CONTROL
SLOS246B JUNE 1999 REVISED MARCH 2000
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Compatible With PC 99 Desktop Line-Out
Into 10-k
Load
D
Compatible With PC 99 Portable Into 8-
Load
D
Internal Gain Control, Which Eliminates
External Gain-Setting Resistors
D
Digital Volume Control From +20 dB to
40 dB
D
2-W/Ch Output Power Into 3-
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 PowerPAD
TM
description
The TPA0152 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-
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-
speakers, the TPA0152 has less than 0.3% 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.
The overall gain of the amplifier is controlled digitally by the UP and DOWN terminals. At power up, the gain
is set at the lowest level, 85 dB. It can then be adjusted to any of 31 discrete steps by pulling the voltage down
at the desired pin to logic low. The gain is adjusted in the initial stage of the amplifier as opposed to the power
output stage. As a result, the THD changes very little over all volume levels.
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 TPA0152
automatically switches into SE mode when the SE/BTL input is activated. This effectively reduces the gain by
6 dB.
The TPA0152 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
A.
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 truly realized in multilayer PCB
applications. This allows the TPA0152 to operate at full power into 8-
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
GND
UP
DOWN
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
PWP PACKAGE
(TOP VIEW)
PowerPAD is a trademark of Texas Instruments Incorporated.
TPA0152
2-W STEREO AUDIO POWER AMPLIFIER
WITH DIGITAL VOLUME CONTROL
SLOS246B JUNE 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
UP
RIN
PC-BEEP
SE/BTL
LHPIN
LLINEIN
LIN
ROUT
PVDD
VDD
BYPASS
SHUTDOWN
GND
LOUT+
LOUT
DOWN
TPA0152
2-W STEREO AUDIO POWER AMPLIFIER
WITH DIGITAL VOLUME CONTROL
SLOS246B JUNE 1999 REVISED MARCH 2000
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
AVAILABLE OPTIONS
PACKAGED DEVICE
TA
TSSOP
(PWP)
40
C to 85
C
TPA0152PWP
The PWP package is available taped and reeled. To order a taped and reeled part,
add the suffix R to the part number (e.g., TPA0152PWPR).
Terminal Functions
TERMINAL
I/O
DESCRIPTION
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 TPA0152 generates an internal clock. An external clock can override the
internal clock input to this terminal.
DOWN
3
I
A momentary pulse on this terminal decreases the volume level by 2 dB. Holding the terminal low for a period
of time will step the amplifier through the volume levels at a rate determined by the capacitor on the CLK
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 in SE mode
LOUT
9
O
Left-channel negative output in BTL mode and high impedance in SE mode
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.
PVDD
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 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.
UP
2
I
A momentary pulse on this terminal increases the volume level by 2 dB. Holding the terminal low for a period
of time will step the amplifier through the volume levels at a rate determined by the capacitor on the CLK
terminal.
VDD
19
I
Analog VDD input supply. This terminal needs to be isolated from PVDD to achieve highest performance.
TPA0152
2-W STEREO AUDIO POWER AMPLIFIER
WITH DIGITAL VOLUME CONTROL
SLOS246B JUNE 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, V
DD
6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
0.3 V to V
DD
+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, 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
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
Texas Instruments Recommended
Board for PowerPAD on page 33 of the before mentioned document.
recommended operating conditions
MIN
MAX
UNIT
Supply voltage, VDD
4.5
5.5
V
High level input voltage VIH
SE/BTL
4
V
High-level input voltage, VIH
SHUTDOWN
2
V
Low level input voltage VIL
SE/BTL
3
V
Low-level input voltage, VIL
SHUTDOWN
0.8
V
Operating free-air temperature, TA
40
85
C
TPA0152
2-W STEREO AUDIO POWER AMPLIFIER
WITH DIGITAL VOLUME CONTROL
SLOS246B JUNE 1999 REVISED MARCH 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, V
DD
= 5 V, T
A
= 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 = 4.9 V to 5.1 V
67
dB
|IIH|
High-level input current
VDD = 5.5 V,
VI = VDD
900
nA
|IIL|
Low-level input current
VDD = 5.5 V,
VI = 0 V
900
nA
IDD
Supply current
BTL mode
10
mA
IDD
Supply current
SE mode
5
mA
IDD(SD)
Supply current, shutdown mode
150
300
A
operating characteristics, V
DD
= 5 V, T
A
= 25
C, R
L
= 4
, Gain = 2 V/V, BTL mode (unless otherwise
noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PO
Output power
THD = 1%,
f = 1 kHz
2
W
THD + N
Total harmonic distortion plus noise
PO = 1 W,
f = 20 Hz to 15 kHz
0.3%
BOM
Maximum output power bandwidth
THD = 5%
>15
kHz
Supply ripple rejection ratio
f = 1 kHz,
BTL mode
65
dB
Supply ripple rejection ratio
,
CB = 0.47
F
SE mode
60
dB
V
Noise output voltage
CB = 0.47
F,
BTL mode
17
VRMS
Vn
Noise output voltage
B
f = 20 Hz to 20 kHz
SE mode
44
VRMS
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
vs Output power
1, 4, 6, 8, 10,
12
THD+N
Total harmonic distortion plus noise
vs Gain
2
vs Frequency
3, 5, 7, 9, 11,
14
Vn
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 respone
21, 22
PO
Output power
vs Load resistance
23, 24
PD
Power dissipation
vs Output power
25, 26
PD
Power dissipation
vs Ambient temperature
22
ZI
Input impedance
vs Gain
28
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