TS4962_V01 datasheet(19/44 Pages) STMICROELECTRONICS

tên linh kiện	TS4962

Giải thích chi tiết về linh kiện	2.8 W filter-free mono class D audio power amplifier

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DocID10968 Rev 9

19/44

TS4962

Electrical characteristics

3.1

Electrical characteristics curves

The graphs shown 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. 5µF + 60 µH for 8 Ω)

All measurements are done with CS1 = 1 µF and CS2 = 100 nF (see Figure 2), except for the

PSRR where CS1 is removed (see Figure 3).

Figure 2. Schematic used for test measurements

Figure 3. Schematic used for PSSR measurements

In+

In-

Rin

150k

Rin

150k

Cin

GND

Vcc

Cs1

1uF

GND

Cs2

100nF

GND

4 or 8 Ohms

15uH or 30uH

LC Filter

5th order

50kHz low pass

filter

Audio Measurement

Bandwidth < 30kHz

Out+

Out-

TS4962

In+

In-

Rin

150k

Rin

150k

4.7uF

GND

Cs2

100nF

GND

4 or 8 Ohms

15uH or 30uH

LC Filter

5th order

50kHz low pass

filter

RMS Selective Measurement

Bandwidth=1% of Fmeas

Out+

Out-

TS4962

GND

5th order

50kHz low pass

filter

Reference

20Hz to 20kHz

Vcc

GND

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