TS4994 datasheet(24/35 Pages) STMICROELECTRONICS

部件名	TS4994

功能描述	1W differential input/output audio power amplifier with selectable standby

PDF	35 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

24 / 35 page

Application information

TS4994

24/35

The three following graphs show PSRR versus frequency and versus bypass capacitor Cb in

worst-case conditions (

ΔR = 0.1%).

Figure 70.

PSRR vs. frequency (worst case

conditions)

Figure 71.

PSRR vs. frequency (worst case

conditions)

Figure 72.

PSRR vs. frequency (worst case

conditions)

100

1000

10000

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Cb=0.1

μF

Cb=1

μF

Cb=0

20k

Cb=0.47

μF

Vcc = 5V, Vripple = 200mVpp

Av = 1, Cin = 4.7

μF

ΔR/R = 0.1%, RL ≥ 8Ω

Tamb = 25

°C, Inputs = Grounded

Frequency (Hz)

100

1000

10000

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Cb=0.1

μF

Cb=1

μF

Cb=0

20k

Cb=0.47

μF

Vcc = 3.3V, Vripple = 200mVpp

Av = 1, Cin = 4.7

μF

ΔR/R = 0.1%, RL ≥ 8Ω

Tamb = 25

°C, Inputs = Grounded

Frequency (Hz)

100

1000

10000

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Cb=0.1

μF

Cb=1

μF

Cb=0

20k

Cb=0.47

μF

Vcc = 2.5V, Vripple = 200mVpp

Av = 1, Cin = 4.7

μF

ΔR/R = 0.1%, RL ≥ 8Ω

Tamb = 25

°C, Inputs = Grounded

Frequency (Hz)

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