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參數資料
| 型號： | TPA2026D2YZHT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | AUDIO AMPLIFIER, PBGA16 |
| 封裝： | 2.20 X 2.20 MM, GREEN, DSBGA-16 |
| 文件頁數： | 25/39頁 |
| 文件大小： | 823K |
| 代理商： | TPA2026D2YZHT |
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C
I
1
f =
(2
R
C )
p
I
C
1
C =
(2
R
f )
p
www.ti.com
SLOS649A – MARCH 2010 – REVISED JANUARY 2011
DECOUPLING CAPACITOR CS
The TPA2026D2 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-mF ceramic capacitor
(typically) placed as close as possible to the device PVDD (L, R) lead works best. Placing this decoupling
capacitor close to the TPA2026D2 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 mF 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.
INPUT CAPACITORS CI
The input capacitors and input resistors form a high-pass filter with the corner frequency, fC, determined in
(5)
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 6 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.
(6)
YZH PACKAGE DIMENSIONS
The package dimensions for this YZH package are shown in the table below. See the package drawing at the
end of this data sheet for more details.
Packaged Devices
D
E
Max = 2160m
Max = 2137m
TPA2026D2YZH
Min = 2100m
Min = 2077m
BOARD LAYOUT
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 47 and Table 5 show the appropriate diameters for a
WCSP layout. The TPA2026D2 evaluation module (EVM) layout is shown in the next section as a layout
example.
Copyright 2010–2011, Texas Instruments Incorporated
31
Product Folder Link(s): TPA2026D2
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| TPA2028D1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-W Mono Class-D Audio Amplifier with Fast Gain Ramp SmartGain? AGC/DRC |
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| TPA2028D1YZFEVM | 功能描述:音頻 IC 開發工具 TPA2028D1YZFEVM Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| TPA2028D1YZFEVM | 制造商:Texas Instruments 功能描述:DEVELOPMENT TOOL |
| TPA2028D1YZFR | 功能描述:音頻放大器 3.0 W Mono Class-D Audio 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 |
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