參數(shù)資料
型號(hào)： TPA0213DGQR
英文描述： Toggle Switch,STRAIGHT,SPDT,(ON)-OFF-(ON),PC TAIL Terminal,TOGGLE BAT,PCB Hole Count:3
中文描述： 音頻放大器|單|的CMOS | TSSOP封裝| 10PIN |塑料
文件頁(yè)數(shù)： 38/42頁(yè)
文件大?。?/td> 806K
代理商： TPA0213DGQR
TPA0202
2-W STEREO AUDIO POWER AMPLIFIER
SLOS205B – FEBRUARY 1998 – REVISED DECEMBER 2000
38
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
headroom and thermal considerations
Linear power amplifiers dissipate a significant amount of heat in the package under normal operating conditions.
A typical music CD requires 12 dB to 15 dB of dynamic headroom to pass the loudest portions without distortion
as compared with the average power output. From the TPA0202 data sheet, one can see that when the
TPA0202 is operating from a 5-V supply into a 3-
speaker that 2 W peaks are available. Converting watts to
dB:
P
dB
10Log
P
W
P
ref
10Log2
1
3.0 dB
(17)
Subtracting the headroom restriction to obtain the average listening level without distortion yields:
3.0 dB
3.0 dB
3.0 dB
3.0 dB
3.0 dB
15 dB
12 dB
9 dB
6 dB
3 dB
12 dB (15 dB headroom)
9 dB (12 dB headroom)
6 dB (9 dB headroom)
3 dB (6 dB headroom)
0 dB (3 dB headroom)
Converting dB back into watts:
P
W
10
PdB 10
P
ref
63 mW (15 dB headroom)
120 mW (12 dB headroom)
250 mW (9 dB headroom)
500 mW (6 dB headroom)
1000 mW (3 dB headroom)
(18)
This is valuable information to consider when attempting to estimate the heat dissipation requirements for the
amplifier system. Comparing the absolute worst case, which is 2 W of continuous power output with 0 dB of
headroom, against 12 dB and 15 dB applications drastically affects maximum ambient temperature ratings for
the system. Using the power dissipation curves for a 5-V, 3-
system, the internal dissipation in the TPA0202
and maximum ambient temperatures is shown in Table 4.
相關(guān)PDF資料
PDF描述
TPA0222PWPR AUDIO AMPLIFIER|DUAL|CMOS|TSSOP|24PIN|PLASTIC
TPA0223DGQR Switches, Toggle; Circuitry:SPDT; Switch Operation:On-None-On; Current Rating:2A; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes; Switch Function:SPDT
TPA0232PWPR Switches, Toggle; Circuitry:SPDT; Switch Operation:On-None-(On); Contact Current Max:3A; Actuator Style:Bat; Current Rating:3A@120VAC or 29VDC; Leaded Process Compatible:Yes; Operating Temp. Min:-30 C
TPA0233DGQR AUDIO AMPLIFIER|DUAL|CMOS|TSSOP|10PIN|PLASTIC
TPA0242PWPR SWITCH, PCB DPDT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA0213DGQRG4 功能描述:音頻放大器 Mono 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
TPA0213EVM 功能描述:音頻 IC 開(kāi)發(fā)工具 TPA0213 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
TPA0222 制造商:TI 制造商全稱:Texas Instruments 功能描述:STEREO 2-W AUDIO POWER AMPLIFIER WITH FOUR SELECTABLE GAIN SETTINGS AND MUX CONTROL
TPA0222EVM 功能描述:音頻 IC 開(kāi)發(fā)工具 TPA0222 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V
TPA0222PWP 功能描述:音頻放大器 2W Stereo A 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
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