- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98273 > TPA3200D1DCP (TEXAS INSTRUMENTS INC) 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 PDF資料下載
參數(shù)資料
| 型號： | TPA3200D1DCP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| 封裝： | GREEN, PLASTIC, HTSSOP-44 |
| 文件頁數(shù)： | 15/29頁 |
| 文件大小： | 1083K |
| 代理商： | TPA3200D1DCP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁
www.ti.com
POWER SUPPLY DECOUPLING
BSN AND BSP CAPACITORS
BSN AND BSP RESISTORS
VCLAMP CAPACITOR
MIDRAIL BYPASS CAPACITOR
VREF DECOUPLING CAPACITOR
SWITCHING FREQUENCY
fs +
6.6
R
OSC COSC
(5)
TPA3200D1
SLOS442A – MAY 2005 – REVISED JULY 2005
The typical output voltage, measured across the load, is also given in Table 6 at each of the gain steps. This is
the expected voltage with a full scale input signal applied at the digital inputs and VDD = 5 V. This voltage scales
proportionally with a lower or higher VDD. For example, if VDD = 4.5 V, scale the results in Table 6 by 4.5/5, or
0.9.
The differential offset voltage, measured across the speaker outputs, increases as the gain is increased. For the
lowest offset voltage, specified in the electrical characteristics table, set the gain at the lowest step, 12 dB.
The TPA3200D1 is a high-performance CMOS audio amplifier that requires adequate power supply decoupling
to ensure the output total harmonic distortion (THD) is as low as possible. Power supply decoupling also
prevents oscillations for long lead lengths between the amplifier and the speaker. The optimum decoupling is
achieved by using two capacitors of different types that target different types of noise on the power supply leads.
For higher frequency transients, spikes, or digital hash on the line, a good low equivalent-series-resistance (ESR)
ceramic capacitor, typically 1 F placed as close as possible to the device VCC lead works best. For filtering
lower-frequency noise signals, a larger aluminum electrolytic capacitor of 10 F or greater placed near the audio
power amplifier is recommended.
The full H-bridge output stage uses only NMOS transistors. It therefore requires bootstrap capacitors for the high
side of each output to turn on correctly. A 0.22-F ceramic capacitor, rated for at least 25 V, must be connected
from each output to its corresponding bootstrap input. Specifically, one 0.22-F capacitor must be connected
from OUTP to BSP, and one 0.22-F capacitor must be connected from OUTN to BSN.
To limit the current when charging the bootstrap capacitors, a resistor with a value of approximately 50
(+/–10% maximum) must be placed in series with each bootstrap capacitor. The current will be limited to less
than 500 A.
To ensure that the maximum gate-to-source voltage for the NMOS output transistors is not exceeded, an internal
regulator clamps the gate voltage. A 1-F capacitor must be connected from VCLAMP (pin 15) to ground. This
capacitor must have a rating of VCC or more. The voltage at VCLAMP (pin 15) varies with VCC and may not be
used for powering any other circuitry.
The midrail bypass capacitor is the most critical capacitor and serves several important functions. During start-up
or recovery from shutdown mode, C(BYPASS) determines the rate at which the amplifier starts up. The second
function is to reduce noise produced by the power supply caused by coupling into the output drive signal. This
noise is from the midrail generation circuit internal to the amplifier, which appears as degraded PSRR and
THD+N.
The VREF terminal (pin 34) is the output of an internally-generated 5-V supply, used for the oscillator and gain
setting logic. It requires a 0.1-F to 1-F capacitor to ground to keep the regulator stable. The regulator may not
be used to power any additional circuitry.
The switching frequency is determined using the values of the components connected to ROSC (pin 31) and
COSC (pin 32) and may be calculated using Equation 5:
The frequency may be varied from 225 kHz to 275 kHz by adjusting the values chosen for ROSC and COSC.
22
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPA3200D1DCPR | 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| TPA3200D1DCPRG4 | 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| TPA3200D1DCPG4 | 12.8 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| TPA321DGNR | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| TPA321DGN | 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA3200D1DCP | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC 制造商:Texas Instruments 功能描述:IC, AUDIO PWR AMP, CLASS D 20W HTSSOP-44 |
| TPA3200D1DCPG4 | 功能描述:音頻放大器 Mono High Power Dig Input Class-D 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 |
| TPA3200D1DCPR | 功能描述:音頻放大器 Mono High Power Dig Input Class-D 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 |
| TPA3200D1DCPRG4 | 功能描述:音頻放大器 Mono High Power Dig Input Class-D 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 |
| TPA3200D1EVM | 功能描述:音頻 IC 開發(fā)工具 TPA3200D1 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。