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TPA0232PWP Datenblatt(PDF) 1 Page - Texas Instruments

Teilenummer TPA0232PWP
Bauteilbeschribung  STEREO 2-W AUDIO POWER AMPLIFIER WITH DC VOLUME CONTROL AND MUX CONTROL
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Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

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TPA0232
STEREO 2-W AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL AND MUX CONTROL
SLOS286 – NOVEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Compatible With PC 99 Desktop Line-Out
Into 10-k
Ω 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 Input MUX Select Terminal
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
description
The TPA0232 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 TPA0232 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. The HP/LINE terminal allows the user to select which MUX input is active
regardless of whether the amplifier is in SE or BTL mode. In notebook applications, where internal speakers
are driven as BTL and the line outputs (often headphone drive) are required to be SE, the TPA0232
automatically switches into SE mode when the SE/BTL input is activated, and this effectively reduces the gain
by 6 dB.
The TPA0232 consumes only 10 mA of supply current during normal operation. A miserly shutdown mode
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 TPA0232 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
© 1999, 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.
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PWP PACKAGE
(TOP VIEW)
GND
HP/LINE
VOLUME
LOUT+
LLINEIN
LHPIN
PVDD
RIN
LOUT–
LIN
BYPASS
GND
GND
RLINEIN
SHUTDOWN
ROUT+
RHPIN
VDD
PVDD
CLK
ROUT–
SE/BTL
PC-BEEP
GND
PowerPAD is a trademark of Texas Instruments Incorporated.


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