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参数资料
| 型号： | TPA6203A1DGN |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 1.25 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8 |
| 封装： | GREEN, PLASTIC, SOP-8 |
| 文件页数： | 2/29页 |
| 文件大小： | 952K |
| 代理商： | TPA6203A1DGN |
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_
+
VDD
VO+
VO-
GND
ToBattery
Cs
Bias
Circuitry
IN-
IN+
+
-
IN
SHUTDOWN
RI
RF
CI
C(
)
BYPASS
(Optional)
_
+
VDD
VO+
VO-
GND
ToBattery
Cs
Bias
Circuitry
IN-
IN+
IN
SHUTDOWN
RI
RF
CI
RI
RF
C(
)
BYPASS
(Optional)
Bypass Capacitor (CBYPASS) and Start-Up Time
Selecting Components
Resistors (RF and RI)
Gain = RF/RI
(1)
SLOS364F – MARCH 2002 – REVISED JUNE 2008.......................................................................................................................................................... www.ti.com
Figure 29. Differential Input Application Schematic Optimized With Input Capacitors
Figure 30. Single-Ended Input Application Schematic
The internal voltage divider at the BYPASS pin of this
device
sets
a
mid-supply
voltage
for
internal
references and sets the output common mode
The input (RI) and feedback resistors (RF) set the
voltage to VDD/2. Adding a capacitor to this pin filters
gain of the amplifier according to Equation 1.
any noise into this pin and increases the kSVR.
C(BYPASS)also determines the rise time of VO+ and VO-
when the device is taken out of shutdown. The larger
RF and RI should range from 1 k to 100 k. Most
the capacitor, the slower the rise time. Although the
graphs were taken with RF = RI = 20 k.
output rise time depends on the bypass capacitor
Resistor matching is very important in fully differential
value, the device passes audio 4
s after taken out of
amplifiers. The balance of the output on the reference
shutdown and the gain is slowly ramped up based on
voltage depends on matched ratios of the resistors.
C(BYPASS).
CMRR, PSRR, and the cancellation of the second
To minimize pops and clicks, design the circuit so the
harmonic distortion diminishes if resistor mismatch
impedance (resistance and capacitance) detected by
occurs. Therefore, it is recommended to use 1%
both inputs, IN+ and IN-, is equal.
tolerance resistors or better to keep the performance
optimized.
10
Copyright 2002–2008, Texas Instruments Incorporated
Product Folder Link(s): TPA6203A1
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| TPA6203A1DGNG4 | 功能描述:音频放大器 1.25-W Mono Fully Diff ClassAB Aud Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA6203A1DGNR | 功能描述:音频放大器 1.25W Mono Fully Dif Class-AB Audio Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA6203A1DGNR | 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 AB 1.25W MSOP-8 |
| TPA6203A1DGNRG4 | 功能描述:音频放大器 1.25W Mono Fully Dif Class-AB Audio Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA6203A1DRB | 功能描述:音频放大器 Mono Fully Diff Class-AB RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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