POWER AMPLIFIER. TPA6112A2 Datasheet

TPA6112A2 AMPLIFIER. Datasheet pdf. Equivalent

TPA6112A2 Datasheet
Recommendation TPA6112A2 Datasheet
Part TPA6112A2
Description 150-mW STEREO AUDIO POWER AMPLIFIER
Feature TPA6112A2; www.ti.com TPA6112A2 SLOS342A – DECEMBER 2000 – REVISED SEPTEMBER 2004 150-mW STEREO AUDIO POWER AM.
Manufacture etcTI
Datasheet
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etcTI TPA6112A2
www.ti.com
TPA6112A2
SLOS342A – DECEMBER 2000 – REVISED SEPTEMBER 2004
150-mW STEREO AUDIO POWER AMPLIFIER
FEATURES
150 mW Stereo Output
Differential Inputs
PC Power Supply Compatible
– Fully Specified for 3.3 V and 5 V Operation
– Operation to 2.5 V
Pop Reduction Circuitry
Internal Mid-Rail Generation
Thermal and Short-Circuit Protection
Surface-Mount Packaging
– PowerPAD™ MSOP
DGQ PACKAGE
(TOP VIEW)
VO1 1 10 VDD
IN1–
2
9 VO2
IN1+
3
8 IN2–
BYPASS
4
7 IN2+
GND
5
6 SHUTDOWN
DESCRIPTION
The TPA6112A2 is a stereo audio power amplifier with differential inputs packaged in a 10-pin PowerPAD MSOP
package capable of delivering 150 mW of continuous RMS power per channel into 16-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.
TYPICAL APPLICATION CIRCUIT
325 k
Ri
Ri
Right In Ci
(Differential)
+
Ri
Ci Rf
2 IN1–
3 IN1+
4 BYPASS
C(B)
+
Left In
(Differential)
Ci
Ci
Rf
Ri
7 IN2+
Ri 8 IN2–
Rf
325 k
VDD/2
VDD 10
VDD
C(S)
VO1 1
+
C(C)
Bias SHUTDOWN 6
Control
From
Shutdown
Control Circuit
+ VO2 9
– 5 C(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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2004, Texas Instruments Incorporated



etcTI TPA6112A2
TPA6112A2
SLOS342A – DECEMBER 2000 – REVISED SEPTEMBER 2004
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device
placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
DESCRIPTION (CONTINUED)
THD+N when driving an 16-load from 5 V is 0.03% at 1 kHz, and less than 1% across the audio band of 20 Hz
to 20 kHz. For 32-loads, the THD+N is reduced to less than 0.02% at 1 kHz, and is less than 1% across the
audio band of 20 Hz to 20 kHz. For 10-kloads, the THD+N performance is 0.005% at 1 kHz, and less than
0.5% across the audio band of 20 Hz to 20 kHz.
TA
-40°C to 85°C
AVAILABLE OPTIONS
PACKAGED DEVICE
MSOP (1)
TPA6112A2DGQ
MSOP SYMBOLIZATION
TI APD
(1) The DGQ package isavailable in left-ended tape and reel only (e.g., TPA6112A2DGQR).
TERMINAL
NAME
NO
BYPASS
4
GND
IN1-
IN1+
IN2-
IN2+
SHUTDOWN
VDD
VO1
VO2
5
2
3
8
7
6
10
1
9
Terminal Functions
I/O DESCRIPTION
I Tap to voltage divider for internal mid-supply bias supply. Connect to a 0.1 µF to 1 µF low ESR capacitor
for best performance.
I GND is the ground connection.
I IN1- is the negative input for channel 1.
I IN1+ is the positive input for channel 1.
I IN2- is the negative input for channel 2.
I IN2+ is the positive input for channel 2.
I Puts the device in a low quiescent current mode when held high.
I VDD is the supply voltage terminal.
O VO1 is the audio output for channel 1.
O VO2 is the audio output for channel 2.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature (unless otherwise noted(1))
VDD Supply voltage
VI Input voltage
Continuous total power dissipation
TJ Operating junction temperature range
Tstg Storage temperature range
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
UNITS
6V
-0.3 V to VDD + 0.3 V
internally limited
-40°C to 150°C
-65°C to 150°C
260°C
(1) Stresses beyond thoselisted under absolute maximum ratings may cause permanent damage to the device.These are stress ratings
only, and functional operation of the device at theseor any other conditions beyond those indicated under recommended
operatingconditions is not implied. Exposure to absolute-maximum-rated conditions forextended periods may affect device reliability.
2



etcTI TPA6112A2
www.ti.com
TPA6112A2
SLOS342A – DECEMBER 2000 – REVISED SEPTEMBER 2004
PACKAGE
DGQ
DISSIPATION RATING TABLE
TA25°C
POWER RATING
2.14 W(1)
DERATING FACTOR
ABOVE TA = 25°C
17.1 mW/°C
TA = 70°C
POWER RATING
1.37 W
TA = 85°C
POWER RATING
1.11 W
(1) Please see the Texas Instrumentsdocument, PowerPAD Thermally EnhancedPackage Application
Report (literature number SLMA002), for moreinformation on the PowerPAD package. The thermal
data was measured on a PCBlayout based on the information in the section entitledTexas
Instruments Recommended Board forPowerPAD on page 33 of the before mentioneddocument.
RECOMMENDED OPERATING CONDITIONS
VDD
TA
VIH, (SHUTDOWN)
VIL, (SHUTDOWN)
Supply voltage
Operating free-air temperature
High-level input voltage
Low-level input voltage
MIN
2.5
-40
60% x VDD
MAX
5.5
85
25% x VDD
UNIT
V
°C
V
V
DC ELECTRICAL CHARACTERISTICS
At TA = 25°C, VDD = 2.5 V (Unless Otherwise Noted)
PARAMETER
VOO
PSRR
Output offset voltage
Power supply rejection ratio
IDD
IDD(SD)
Zi
Supply current
Supply current in SHUTDOWN mode
Input impedance
TEST CONDITIONS
AV = 2 V/V
VDD = 3.2 V to 3.4 V
SHUTDOWN = 0 V
SHUTDOWN = VDD
MIN TYP MAX UNIT
15 mV
83 dB
1.5 3 mA
10 50 µA
>1 M
AC OPERATING CHARACTERISTICS
VDD = 3.3 V, TA = 25°C, RL = 16
PARAMETER
PO Output power (each channel)
THD+N Total harmonic distortion + noise
BOM Maximum output power BW
Phase margin
Supply ripple rejection ratio
Channel/channel output separation
SNR
Signal-to-noise ratio
Vn Noise output voltage
TEST CONDITIONS
THD0.1%, f = 1 kHz
PO = 40 mW, 20 - 20 kHz
G = 10, THD < 5%
Open loop
f = 1 kHz
f = 1 kHz
PO = 50 mW, AV = 1
AV = 1
DC ELECTRICAL CHARACTERISTICS
At TA = 25°C, VDD = 5 .5 V (Unless otherwise noted)
PARAMETER
TEST CONDITIONS
VOO
PSRR
IDD
IDD(SD)
|IIH|
|IIL|
Zi
Output offset voltage
Power supply rejection ratio
Supply current
Supply current in SHUTDOWN mode
High-level input current (SHUTDOWN)
Low-level input current (SHUTDOWN)
Input impedance
AV = 2 V/V
VDD = 4.9 V to 5.1 V
SHUTDOWN = 0 V
SHUTDOWN = VDD
VDD = 5.5 V, VI = VDD
VDD = 5.5 V, VI = 0 V
MIN
MIN TYP MAX UNIT
60 mW
0.4%
> 20
kHz
96°
71 dB
89 dB
100 dB
11 µV(rms)
TYP MAX UNIT
15 mV
76 dB
1.5 3 mA
60 100 µA
1 µA
1 µA
>1 M
3







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