TS4962MEIKJT 데이터 시트보기 (PDF) - STMicroelectronics

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TS4962MEIKJT

3 W filter-free class D audio power amplifier

STMicroelectronics 

TS4962M

Electrical characteristic curves

5

Electrical characteristic curves

The graphs included in this section use the following abbreviations:

• RL + 15 μH or 30 μH = pure resistor + very low series resistance inductor

• Filter = LC output filter (1 µF+30 µH for 4 Ω and 0.5 µF+60 µH for 8 Ω)

• All measurements made with Cs1=1 µF and Cs2=100 nF except for PSRR where Cs1 is

removed.

Figure 4. Test diagram for measurements

Vcc

1uF 100nF

Cs1 +

Cs2

Cin

GND GND

Rin

In+

150k

Out+

TS4962

Cin

Rin

In-

Out-

150k

GND

15uH or 30uH

or

LC Filter

4 or 8 Ohms

RL

5th order

50kHz low pass

filter

Audio Measurement

Bandwidth < 30kHz

Figure 5. Test diagram for PSRR measurements

100nF

Cs2 20Hz to 20kHz

Vcc

4.7uF Rin

150k

4.7uF Rin

150k

GND

In+

Out+

TS4962

In-

Out-

GND

15uH or 30uH

or

LC Filter

4 or 8 Ohms

RL

5th order

50kHz low pass

filter

GND

5th order

50kHz low pass

filter

GND

Reference

RMS Selective Measurement

Bandwidth=1% of Fmeas

DocID11703 Rev 6

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