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)： 24/42頁(yè)
文件大?。?/td> 806K
代理商： TPA0213DGQR
TPA0202
2-W STEREO AUDIO POWER AMPLIFIER
SLOS205B – FEBRUARY 1998 – REVISED DECEMBER 2000
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
bridged-tied load versus single-ended mode
Figure 59 shows a linear audio power amplifier (APA) in a BTL configuration. The TPA0202 BTL amplifier
consists of two linear amplifiers driving both ends of the load. There are several potential benefits to this
differential drive configuration but initially consider power to the load. The differential drive to the speaker means
that as one side is slewing up, the other side is slewing down, and vice versa. This in effect doubles the voltage
swing on the load as compared to a ground referenced load. Plugging 2
×
V
O(PP)
into the power equation, where
voltage is squared, yields 4
×
the output power from the same supply rail and load impedance (see equation 1).
Power
V(rms)
RL
2
(1)
V(rms)
VO(PP)
2 2
RL
2x VO(PP)
VO(PP)
–VO(PP)
VDD
VDD
Figure 59. Bridge-Tied Load Configuration
In a typical computer sound channel operating at 5 V, bridging raises the power into an 8-
speaker from a
singled-ended (SE, ground reference) limit of 250 mW to 1 W. In sound power that is a 6-dB improvement —
which is loudness that can be heard. In addition to increased power there are frequency response concerns.
Consider the single-supply SE configuration shown in Figure 60. A coupling capacitor is required to block the
dc offset voltage from reaching the load. These capacitors can be quite large (approximately 33
μ
F to 1000
μ
F)
so they tend to be expensive, heavy, occupy valuable PCB area, and have the additional drawback of limiting
low-frequency performance of the system. This frequency limiting effect is due to the high pass filter network
created with the speaker impedance and the coupling capacitance and is calculated with equation 2.
fc
1
2 RLCC
(2)
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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