av2030 AVIC, av2030 Datasheet - Page 11

• Manufacturer Part Number: av2030
• Description: Linear Integrated Circuit
• Manufacturer: AVIC

@vic
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:
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.
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/Ps is necessary for 0.1% TIM.
As shown Slew-Rates of above 10V/Ps do not contribute to a further reduction in TIM.
Slew-Rates of 100V/Ps 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
voltage less than the maximum value fixed by the IC breakdown voltage.
Using monolithic audio amplifier with non regulated supply correctly. In any working case it must provide a supply
In Fig.25 The experimental results are shown for the 30W amplifier using the UTC2030A as a driver and a
The Diagram of Fig.26 originated by SGS can be used to find the Slew-Rate(SR) required for a given output power
m2
m1
The result is an AC signal at the output whole peak-to-peak value is the TIM voltage, which can be measured
Fig.23 20kHz sawtooth waveform
TIM(%)
AV2030
10
10
10
10
-1
-2
1
0
10
-1
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RC Filter fc=30kHz
UTC2030A
BD908/907
Gv=26dB
Vs=36V
RL=4:
SR(V/Ps)
Fig. 25 TIM distortion Vs.
10
0
Output Power
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10
1
Po(W)
TIM
LINEAR INTEGRATED CIRCUIT
10
2
Vsawtooth
VOUT
Filtered
Siganal
Output
Signal
SR(V/ s)
Input
Ï
* 100
10
10
10
10
-1
1
0
10
2
-1
RC Filter fc=30kHz
Fig.24 Inverting sawtooth waveform
diagram(fc=30kHz)
Fig. 26 TIM design
10
0
10
1
Vo(Vp-p)
QW-R107-004,B
10
2