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參數(shù)資料
| 型號： | UTCTDA2030 |
| 廠商： | 友順科技股份有限公司 |
| 元件分類： | 音頻放大器 |
| 英文描述： | Single Audio Amplifier |
| 中文描述： | 單音頻放大器 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 182K |
| 代理商： | UTCTDA2030 |
UTC TDA2030
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
11
QW-R107-004,B
m2
m1
SR(V/
μ
s)
Input
Signal
Filtered
Output
Siganal
Fig.23 20kHz sawtooth waveform Fig.24 Inverting sawtooth waveform
The result is an AC signal at the output whole peak-to-peak value is the TIM voltage, which can be measured
easily with an oscilloscope. If the peak-topeak value of the signal and the peak-to-peak of the inverting sawtooth are
measured, the TIM can be found very simply from:
TIM
VOUT
Vsawtooth
* 100
=
101
100
101
102
102
101
100
101
UTC2030A
BD908/907
Gv=26dB
Vs=36V
RL=4
RC Filter fc=30kHz
Fig. 25 TIM distortion Vs.
Output Power
Po(W)
TIM(%)
101
100
101
102
Vo(Vp-p)
101
100
101
102
RC Filter fc=30kHz
Fig. 26 TIM design
diagram(fc=30kHz)
TM=01%
TM=001%
TM=1%
SR(V/ s)
米
In Fig.25 The experimental results are shown for the 30W amplifier using the UTC2030A as a driver and a
low-cost complementary pair. A simple RC filter on the input of the amplifier to limit the maximum signal slope(SS) is
an effective way to reduce TIM.
The Diagram of Fig.26 originated by SGS can be used to find the Slew-Rate(SR) required for a given output power
or voltage and a TIM design target.
For example if an anti-TIM filter with a cutoff at 30kHz is used and the max. Peak to peak output voltage is 20V then,
referring to the diagram, a Slew-Rate of 6V/
μ
s is necessary for 0.1% TIM.
As shown Slew-Rates of above 10V/
μ
s do not contribute to a further reduction in TIM.
Slew-Rates of 100V/
μ
s are not only useless but also a disadvantage in hi-fi audio amplifiers because they tend to
turn the amplifier into a radio receiver.
POWER SUPPLY
Using monolithic audio amplifier with non regulated supply correctly. In any working case it must provide a supply
voltage less than the maximum value fixed by the IC breakdown voltage.
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相關代理商/技術參數(shù) |
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| UTCTDA7088 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:FM RECEIVER CIRCUIT FOR BATTERY SUPPLY |
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| UTCTEA1062N | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:LOW VOLTAGE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE |
| UTCTEA2025 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:STEREO AUDIO AMPLIFIER |
| UTCTEA2025A | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:2.3W DUAL AUDIO POWER AMPLIFIER |
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