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参数资料
| 型号： | TPA0242PWPG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
| 封装： | GREEN, PLASTIC, HTSSOP-24 |
| 文件页数： | 1/35页 |
| 文件大小： | 806K |
| 代理商： | TPA0242PWPG4 |
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FEATURES
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GND
HP/LINE
VOLUME
LOUT+
LLINEIN
LHPIN
PVDD
RIN
LOUT–
LIN
BYPASS
GND
RLINEIN
SHUTDOWN
ROUT+
RHPIN
VDD
PVDD
CLK
ROUT–
SE/BTL
PC-BEEP
GND
PWP PACKAGE
(TOP VIEW)
DESCRIPTION
TPA0242
SLOS287C – NOVEMBER 1999 – REVISED SEPTEMBER 2004
STEREO 2.8-W AUDIO POWER AMPLIFIER
WITH DC VOLUME CONTROL AND MUX CONTROL
Compatible With PC 99 Desktop Line-Out Into
10-k
Load
Compatible With PC 99 Portable Into 8-
Load
Internal Gain Control, Which Eliminates
External Gain-Setting Resistors
DC Volume Control From 20 dB to -40 dB
2.8-W/Ch Output Power Into 3-
Load
Input MUX Select Terminal
PC-Beep Input
Depop Circuitry
Stereo Input MUX
Fully Differential Input
Low Supply Current and Shutdown Current
Surface-Mount Power Packaging 24-Pin
TSSOP PowerPAD
The TPA0242 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 TPA0242 has less than 0.22% 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 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 single-ended (SE) or bridge-tied load (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 TPA0242
automatically switches into SE mode when the SE/BTL input is activated, and this effectively reduces the gain by
6 dB.
The TPA0242 consumes only 20 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 TPA0242 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 1999–2004, 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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| TPA0243DGQR | 2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| TPA0243DGQ | 2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| TPA0243DGQG4 | 2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| TPA0243DGQRG4 | 2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| TPA0252PWPR | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TPA0242PWPR | 功能描述:音频放大器 St 2W Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA0242PWPRG4 | 功能描述:音频放大器 St 2W Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA0243 | 制造商:TI 制造商全称:Texas Instruments 功能描述:2-W MONO AUDIO POWER AMPLIFIER WITH HEADPHONE DRIVE |
| TPA0243DGQ | 功能描述:音频放大器 2W Mono Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA0243DGQG4 | 功能描述:音频放大器 2W Mono Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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