TS4890 datasheet(21/32 Pages) STMICROELECTRONICS

部件名	TS4890

功能描述	RAIL TO RAIL OUTPUT 1W AUDIO POWER AMPLIFIER WITH STANDBY MODE ACTIVE LOW

PDF	32 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

21 / 32 page

TS4890

21/32

Fig. 91 : Signal to Noise Ratio vs Power Supply

with Weighted Filter type A

Fig. 93 : Frequency Response Gain vs Cin, &

Cfeed

Fig. 95 : Current Consumption vs Standby

Voltage @ Vcc = 5V

Fig. 92 : Signal to Noise Ratio vs Power Supply

with Weighted Filter Type A

Fig. 94 : Current Consumption vs Power

Supply Voltage (no load)

Fig. 96 : Current Consumption vs Standby

Voltage @ Vcc = 3.3V

2.5

3.0

3.5

4.0

4.5

5.0

100

110

Gv = 2

Cb = Cin = 1

µF

THD+N < 0.4%

Tamb = 25

°C

RL=16

Ω

RL=8

Ω

RL=4

Ω

2.2

Vcc (V)

100

1000

10000

-25

-20

-15

-10

-5

Rin = Rfeed = 22k

Ω

Tamb = 25

°C

Cfeed = 2.2nF

Cfeed = 680pF

Cfeed = 330pF

Cin = 470nF

Cin = 82nF

Cin = 22nF

Frequency (Hz)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

Vcc = 5V

Tamb = 25

°C

Vstandby (V)

2.5

3.0

3.5

4.0

4.5

5.0

100

RL=8

Ω

RL=4

Ω

RL=16

Ω

Gv = 10

Cb = Cin = 1

µF

THD+N < 0.4%

Tamb = 25

°C

2.2

Vcc (V)

012

345

Vstandby = Vcc

Tamb = 25

°C

Vcc (V)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Vcc = 3.3V

Tamb = 25

°C

Vstandby (V)

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