參數(shù)資料
型號(hào)： TPA2050D4YZKR
廠商： TEXAS INSTRUMENTS INC
元件分類： 音頻／視頻放大
英文描述： 0.94 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA25
封裝： 2.61 X 2.61 MM, GREEN, DSBGA-25
文件頁(yè)數(shù)： 15/29頁(yè)
文件大?。?/td> 931K
代理商： TPA2050D4YZKR
DECOUPLING CAPACITOR (CS)
INPUT CAPACITORS (CI)
C
I
1
f =
(2
R
C )
p
(1)
I
C
1
C =
(2
R
f )
p
(2)
BOARD LAYOUT
SLOS544 – JULY 2008....................................................................................................................................................................................................... www.ti.com
The TPA2050D4 is a high-performance Class-D audio amplifier that requires adequate power supply decoupling
to ensure the efficiency is high and total harmonic distortion (THD) is low. For higher frequency transients,
spikes, or digital hash on the line, a good low equivalent-series-resistance (ESR) 1-
F ceramic capacitor
(typically) placed as close as possible to the device PVDD (L, R) lead works best. Placing this decoupling
capacitor close to the TPA2050D4 is important for the efficiency of the Class-D amplifier, because any resistance
or inductance in the trace between the device and the capacitor can cause a loss in efficiency. For filtering
lower-frequency noise signals, a 4.7
F or greater capacitor placed near the audio power amplifier would also
help, but it is not required in most applications because of the high PSRR of this device.
The input capacitors and input resistors form a high-pass filter with the corner frequency, fC, determined in
The value of the input capacitor is important to consider as it directly affects the bass (low frequency)
performance of the circuit. Speakers in wireless phones cannot usually respond well to low frequencies, so the
corner frequency can be set to block low frequencies in this application. Not using input capacitors can increase
output offset. Equation 2 is used to solve for the input coupling capacitance. If the corner frequency is within the
audio band, the capacitors should have a tolerance of ±10% or better, because any mismatch in capacitance
causes an impedance mismatch at the corner frequency and below.
In making the pad size for the WCSP balls, it is recommended that the layout use non solder mask defined
(NSMD) land. With this method, the solder mask opening is made larger than the desired land area, and the
opening size is defined by the copper pad width. Figure 48 and Table 1 shows the appropriate diameters for a
WCSP layout. The TPA2050D4 evaluation module (EVM) layout is shown in the next section as a layout
example.
22
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA2050D4
相關(guān)PDF資料
PDF描述
TPA2050D4YZKT 0.94 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA25
TPA2051D3YFFR 2.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA25
TPA2051D3YFFT 2.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA25
TPA2054D4AYZKR 0.94 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA25
TPA2054D4AYZKT 0.94 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA25
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPA2050D4YZKR 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC
TPA2050D4YZKT 功能描述:音頻放大器 1.4 W/CH Stereo Class-D Audio Subsys 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
TPA2051D3 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.9 W/Channel Mono Class-D Audio Subsystem with DirectPath? Headphone Amplifier & SpeakerGuard?
TPA2051D3AYFFR 制造商:TI 功能描述:Audio Subsystem
TPA2051D3YFFEVM 功能描述:音頻 IC 開發(fā)工具 TPA2051D3YFF 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
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