TPA6101A2_07 Datasheet, PDF (1/19 Pages) Texas Instruments – 50-mW ULTRALOW-VOLTAGE, FIXED-GAIN STEREO HEADPHONE AUDOI POWER AMPLIFIER

TPA6101A2
50ĆmW ULTRALOWĆVOLTAGE, FIXEDĆGAIN STEREO HEADPHONE
AUDIO POWER AMPLIFIER
SLOS331C − AUGUST 2000 − REVISED MARCH 2007
D Minimal External Components Required
D 1.6-V to 3.6-V Supply Voltage Range
D 50-mW Stereo Output
D Low Supply Current . . . 0.75 mA
D Low Shutdown Current . . . 50 nA
D Gain Set Internally to 2 dB
D Pop Reduction Circuitry
D Internal Mid-Rail Generation
D Thermal and Short-Circuit Protection
D Surface-Mount Packaging
− 3-mm y 5-mm MSOP Package (DGN)
− 5-mm y 6-mm SOIC Package (D)
− 2,5-mm y 2,5-mm MicroStar JuniorE BGA
Package (ZQY)
D or DGK PACKAGE
(TOP VIEW)
BYPASS 1
GND 2
SHUTDOWN 3
IN2− 4
8 IN1−
7
V_O1
6
V_DD
5
V_O2
ZQY PACKAGE
(TOP VIEW)
(A1)
BYPASS
(B1)
GND
(C1)
SHUTDOWN
(D1)
IN2−
(A4)
IN1−
(B4)
V_O1
(C4)
V_DD
(D4)
V_O2
description
GND
The TPA6101A2 is a stereo audio power amplifier packaged in an 8-pin SOIC package, an 8-pin MSOP
package, or a 15-ball BGA package, capable of delivering 50 mW of continuous RMS power per channel into
16-Ω loads. Amplifier gain is internally set to 2 dB (inverting) to save board space by eliminating six external
resistors.
The TPA6101A2 is optimized for battery applications because of its low supply current, shutdown current, and
THD+N. To obtain the low-supply-voltage range, the TPA6101A2 biases BYPASS to V_DD/4.
When driving a 16-Ω load with 40-mW output power from 3.3 V, THD+N is 0.08% at 1 kHz, and less than 0.2%
across the audio band of 20 Hz to 20 kHz. For 30 mW into 32-Ω loads, the THD+N is reduced to less than 0.06%
at 1 kHz, and is less than 0.3% across the audio band of 20 Hz to 20 kHz.
typical application circuit
Audio
Input
CI
Audio
Input
CB
CI
From Shutdown
Control Circuit
NOTE: All internal resistor
values are ±20%.
IN 1−
RF
80 kΩ
RI
80 kΩ _{80 kΩ}
BYPASS
RI
IN 2− 80 kΩ
SHUTDOWN
80 kΩ
RF
80 kΩ
VDD/4
−
+
VDD
VO1
VDD
CS
CC
−
+
Bias
Control
VO2
CC
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.
MicroStar BGA is a trademark of Texas Instruments.
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.
Copyright  2007, Texas Instruments Incorporated
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