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參數資料
| 型號： | TPA721D |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數： | 1/26頁 |
| 文件大小： | 663K |
| 代理商： | TPA721D |
www.ti.com
FEATURES
DESCRIPTION
1
2
3
4
8
7
6
5
SHUTDOWN
BYPASS
IN+
IN–
VO–
GND
VDD
VO+
D OR DGN PACKAGE
(TOP VIEW)
Audio
Input
Bias
Control
VDD
700 mW
6
5
7
VO+
VDD
1
2
4
BYPASS
IN–
VDD/2
CI
RI
CS
CB
RF
SHUTDOWN
VO– 8
GND
From System Control
3
IN+
–
+
–
+
TPA721
SLOS231E – NOVEMBER 1998 – REVISED JUNE 2004
700-mW MONO LOW-VOLTAGE AUDIO POWER AMPLIFIER
Fully Specified for 3.3-V and 5-V Operation
The TPA721 is a bridge-tied load (BTL) audio power
amplifier developed especially for low-voltage appli-
Wide Power Supply Compatibility 2.5 V – 5.5 V
cations
where
internal
speakers
are
required.
Output Power for RL = 8
Operating with a 3.3-V supply, the TPA721 can
– 700 mW at VDD = 5 V, BTL
deliver 250-mW of continuous power into a BTL 8-
– 250 mW at VDD = 3.3 V, BTL
load at less than 0.6% THD+N throughout voice band
frequencies. Although this device is characterized out
Integrated Depop Circuitry
to 20 kHz, its operation is optimized for narrower
Thermal and Short-Circuit Protection
band applications such as wireless communications.
Surface-Mount Packaging
The BTL configuration eliminates the need for exter-
nal coupling capacitors on the output in most appli-
– SOIC
cations, which is particularly important for small
– PowerPAD MSOP
battery-powered equipment. This device features a
shutdown mode for power-sensitive applications with
a supply current of 7 A during shutdown. The
TPA721 is available in an 8-pin SOIC surface-mount
package and the surface-mount PowerPAD MSOP,
which reduces board space by 50% and height by
40%.
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 1998–2004, 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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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPA721DG4 | 功能描述:音頻放大器 700mW Mono Class-AB Aud Amp RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA721DGN | 功能描述:音頻放大器 Mono Class-AB w/Active HIgh Shtdwn RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA721DGNG4 | 功能描述:音頻放大器 Mono Class-AB w/Active HIgh Shtdwn RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA721DGNR | 功能描述:音頻放大器 700mW Lw V Audio RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA721DGNRG4 | 功能描述:音頻放大器 Mono Class-AB w/Active HIgh Shtdwn RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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