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參數(shù)資料
| 型號(hào)： | TPA0252PWP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| 封裝： | GREEN, PLASTIC, HTSSOP-24 |
| 文件頁數(shù)： | 1/34頁 |
| 文件大小： | 851K |
| 代理商： | TPA0252PWP |
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www.ti.com
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LOUT–
SHUTDOWN
PVDD
UP
DOWN
CLK
BYPASS
PVDD
VAUX
PC-BEEP
ROUT–
GND
LOUT+
SE/BTL
LIN
LLINEIN
LHPIN
VDD
RHPIN
RLINEIN
RIN
HP/LINE
ROUT+
PWP PACKAGE
(TOP VIEW)
TPA0252
SLOS288B – JUNE 2000 – REVISED SEPTEMBER 2004
2.8-W STEREO AUDIO POWER AMPLIFIER
WITH DIGITAL VOLUME CONTROL
Internal Memory Restores Volume Setting
After Shutdown or Power Down
Digital Volume Control From 20 dB to -40 dB
2.8-W/Ch Output Power Into 3-
Load
Stereo Input MUX
Compatible With PC 99 Desktop Line-Out Into
10-k
Load
Compatible With PC 99 Portable Into 8-
Load
PC-Beep Input
Depop Circuitry
Fully Differential Input
Low Supply Current and Shutdown Current
Surface-Mount Power Packaging 24-Pin
TSSOP PowerPAD
DESCRIPTION
The TPA0252 is a stereo audio power amplifier in a 24-pin TSSOP thermally-enhanced package capable of
delivering 2.8 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 TPA0252 has less than 0.3% THD+N across its specified frequency range.
The integrated depop circuitry virtually eliminates transients that cause noise in the speakers.
Amplifier gain is controlled by two terminals, UP and DOWN. There are 31 discrete steps covering the range of
20 dB (maximum volume setting) to –40 dB (minimum volume setting) in 2 dB steps. By pressing either button
momentarily, the volume steps up or down 2 dB. If a button is held down, the device starts stepping through
volume settings at a rate determined by the capacitor on the CLK terminal.
An internal input MUX, controlled by the HP/LINE pin, allows two sets of stereo inputs to the amplifier. In
notebook applications, where internal speakers are driven as bridge-tied loads (BTL) and the line outputs (often
headphone drive) are required to be single-ended (SE), the TPA0252 automatically switches into SE mode when
the SE/BTL input is activated. This effectively reduces the gain by 6 dB.
The TPA0252 includes a VAUX terminal that is used to power the volume-setting registers when the device is in
SHUTDOWN, and even if the main VDD power supply is removed. As long as the VAUX terminal is held above 3
V, the registers are maintained. If the VAUX terminal is allowed to go below 3 V, then the data in the registers is
lost, and the default gain of –10 dB is loaded into the registers.
The TPA0252 consumes only 9 mA of supply current during normal operation. A miserly shutdown mode
reduces the supply current to 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 TPA0252 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.
PowerPAD is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright 2000–2004, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA0252PWPG4 | 功能描述:音頻放大器 St Class-AB Aud Amp with Dig Vol Control RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA0252PWPR | 功能描述:音頻放大器 Stereo Class-AB w/Ster Hdphn Drive RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA0252PWPRG4 | 功能描述:音頻放大器 Stereo Class-AB w/Ster Hdphn Drive RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA0253 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1-W MONO AUDIO POWER AMPLIFIER WITH HEADPHONE DRIVE |
| TPA0253_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1-W MONO AUDIO POWER AMPLIFIER WITH HEADPHONE DRIVE |
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