TS4990 datasheet(16/32 Pages) STMICROELECTRONICS

номер детали	TS4990

подробное описание детали	1.2 W audio power amplifier with active low standby mode

PDF	32 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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16 / 32 page

Electrical characteristics

TS4990

16/32

Figure 50.

THD + N vs. output power

Figure 51.

THD + N vs. frequency

1E-3

0.01

0.1

0.01

0.1

Vcc=5V

Vcc=3.3V

Vcc=2.6V

Vcc=2.2V

RL = 16

F = 20kHz

Av = 2

Cb = 1

μF

BW < 125kHz

Tamb = 25

°C

Output Power (W)

100

1000

10000

0.01

0.1

Vcc=2.2V, Po=130mW

Vcc=5V, Po=1W

RL=8

Av=2

Cb = 1

μF

Bw < 125kHz

Tamb = 25

°C

20k

Frequency (Hz)

Figure 52.

SNR vs. power supply with

unweighted filter (20Hz to 20kHz)

Figure 53.

THD + N vs. frequency

2.5

3.0

3.5

4.0

4.5

5.0

100

105

110

Av = 2

Cb = 1

μF

THD+N < 0.7%

Tamb = 25

°C

RL=16

RL=4

RL=8

Power Supply Voltage (V)

100

1000

10000

0.1

Vcc=2.2V, Po=150mW

Vcc=5V, Po=1.3W

RL=4

Av=2

Cb = 1

μF

Bw < 125kHz

Tamb = 25

°C

20k

Frequency (Hz)

Figure 54.

THD + N vs. frequency

Figure 55.

SNR vs. power supply with

unweighted filter (20Hz to 20kHz)

100

1000

10000

0.01

0.1

Vcc=2.2V, Po=100mW

Vcc=5V, Po=0.55W

RL=16

Av=2

Cb = 1

μF

Bw < 125kHz

Tamb = 25

°C

20k

Frequency (Hz)

2.5

3.0

3.5

4.0

4.5

5.0

Av = 10

Cb = 1

μF

THD+N < 0.7%

Tamb = 25

°C

RL=16

RL=4

RL=8

Power Supply Voltage (V)

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