TPA112_16 Datasheet, PDF (1/32 Pages) Texas Instruments – 150-mW STEREO AUDIO POWER AMPLIFIER

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TPA112
SLOS212E – AUGUST 1998 – REVISED JUNE 2004
150-mW STEREO AUDIO POWER AMPLIFIER
FEATURES
• 150-mW Stereo Output
• Wide Range of Supply Voltages
– Fully Specified for 3.3-V and 5-V Operation
– Operational From 2.5 V to 5.5 V
• Thermal and Short-Circuit Protection
• Surface-Mount Packaging
– PowerPAD™ MSOP
– SOIC
• Standard Operational Amplifier Pinout
D OR DGN PACKAGE
(TOP VIEW)
V_O1
1
8
V_DD
IN1– 2
7
V_O2
IN1+ 3
6
IN2–
GND 4
5
IN2+
FUNCTIONAL BLOCK DIAGRAM
R_F
DESCRIPTION
The TPA112 is a stereo audio power amplifier pack-
aged 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 compen-
sation 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.
C_{I RI}
L_IN−
C_{I RI}
L_IN+
R_F
V_DD/2
C_{I RI}
R_F
R_IN−
C_I
R_I
R_IN+
2 ^IN1−
3 ^IN1+
6 ^IN2−
5 ^IN2+
Short-Circuit
Protection
Over-Temperature
Protection
V_DD
8
V_DD
V_O1 1
V_O2 7
4
C_C
R_O
R_C
To Headphone
Jack
(See TPA152)
C_C
R_O
R_C
R_F
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 © 1998–2004, Texas Instruments Incorporated