TS4974 datasheet(13/25 Pages) STMICROELECTRONICS

部件名	TS4974

功能描述	1W differential audio power amplifier with up/down digital volume control pins

PDF	25 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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13 / 25 page

TS4974

Electrical characteristics

13/25

Figure 26.

SNR vs. supply voltage

Figure 27.

Output power vs. supply voltage

2.5

3.0

3.5

4.0

4.5

5.0

5.5

100

102

104

106

108

110

RL=16

RL=8

Unweighted filter (20Hz to 20kHz)

F = 1kHz

G = 12dB

THD + N < 0.5%

Tamb = 25

°C

Vcc (V)

2.5

3.0

3.5

4.0

4.5

5.0

0.0

0.2

0.4

0.6

0.8

1.0

F = 1kHz

BW < 125 kHz

Tamb = 25

°C

Vcc (V)

Figure 28.

Output power vs. supply voltage

Figure 29.

Output power vs. load resistance

2.5

3.0

3.5

4.0

4.5

5.0

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

F = 1kHz

BW < 125 kHz

Tamb = 25

°C

Vcc (V)

121620242832

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

Vcc=2.6V

Vcc=3V

Vcc=3.3V

Vcc=4.5V

Vcc=5V

Vcc=4V

Load resistance (

Ω)

THD+N = 1%

Cb = 1

μF

BW < 125kHz

Tamb = 25

°C

Vcc=5.5V

Figure 30.

Current consumption vs. supply

voltage

Figure 31.

Standby current vs. supply voltage

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

No load

Tamb = 25

°C

Vcc (V)

456

0.0

0.1

0.2

0.3

0.4

No load

Tamb = 25

°C

Vcc (V)

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