參數(shù)資料
型號(hào)： TPA302DR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 0.3 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO8
封裝： GREEN, PLASTIC, MS-012AA, SOIC-8
文件頁(yè)數(shù)： 11/25頁(yè)
文件大小： 623K
代理商： TPA302DR
www.ti.com
THERMAL CONSIDERATIONS
RL = 8
RL = 16
VDD = 5 V
Two Channels Active
80
60
40
20
0
0.25
-Free-Air
T
emperature
-
120
140
160
0.5
0.75
100
PO max - Maximum Output Power - W
C
°
T
A
5-V VERSUS 3.3-V OPERATION
TPA302
SLOS174C – JANUARY 1997 – REVISED JUNE 2004
A prime consideration when designing an audio amplifier circuit is internal power dissipation in the device. The
curve in Figure 43 provides an easy way to determine what output power can be expected out of the TPA302 for
a given system ambient temperature in designs using 5-V supplies. This curve assumes no forced airflow or
additional heat sinking.
Figure 43. Free-Air Temperature Versus Maximum Output Power
The TPA302 was designed for operation over a supply range of 2.7 V to 5.5 V. This data sheet provides full
specifications for 5-V and 3.3-V operation because they are considered to be the two most common standard
voltages. There are no special considerations for 3.3-V versus 5-V operation as far as supply bypassing, gain
setting, or stability. Supply current is slightly reduced from 4 mA (typical) to 2.25 mA (typical). The most important
consideration is that of output power. Each amplifier in the TPA302 can produce a maximum voltage swing of
VDD – 1 V. This means, for 3.3-V operation, clipping starts to occur when VO(PP) = 2.3 V as opposed when
VO(PP) = 4 V while operating at 5 V. The reduced voltage swing subsequently reduces maximum output power
into the load before distortion begins to become significant.
19
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA302DRG4 功能描述:音頻放大器 0.3-W Stereo Audio Power Amplifier 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
TPA302EVM 功能描述:0.3-W STEREO AUDIO AMP EVAL MODU RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - 音頻放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:-
TPA3100D2 制造商:TI 制造商全稱:Texas Instruments 功能描述:20-W STEREO CLASS-D AUDIO POWER AMPLIFIER
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