TS4851 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TS4851

Mono 1W Speaker and Stereo 160mW Headset BTL Drivers with Digital Volume Control

STMicroelectronics 

TS4851

Figure 27: Speaker output power vs. power

supply voltage (output mode 3)

2.0

F = 1kHz

Output mode 3

1.6 BW < 125kHz

Tamb = 25°C

1.2

0.8

0.4

4Ω

8Ω

16Ω

32Ω

0.0

3.0

3.5

4.0

4.5

5.0

5.5

Vcc (V)

Figure 28: Speaker output power vs. power

supply voltage (output mode 3)

2.4

F = 1kHz

Output mode 3

2.0 BW < 125kHz

Tamb = 25°C

1.6

1.2

0.8

0.4

0.0

3.0

3.5

4Ω

8Ω

16Ω

32Ω

4.0

4.5

5.0

5.5

Vcc (V)

Figure 29: Headphone output power vs. load

resistor (output mode 4)

0.35

0.30

0.25

F = 1kHz

Output mode 4

BW < 125kHz

Tamb = 25°C

0.20

0.15

0.10

0.05

0.00

3.0

3.5

16Ω

32Ω

4.0

4.5

Vcc (V)

64Ω

5.0

5.5

Electrical Characteristics

Figure 30: Headphone output power vs. load

resistance (output mode 2)

0.40

0.35

0.30

F = 1kHz

Output mode 4

BW < 125kHz

Tamb = 25°C

0.25

0.20

0.15

0.10

0.05

0.00

3.0

3.5

16Ω

32Ω

64Ω

4.0

4.5

5.0

5.5

Vcc (V)

Figure 31: Spkout PSRR vs. frequency

(output modes 1, 7, input grounded)

0

Output mode 1, 7

-10 RL = 8Ω

-20

Vripple = 0.2Vpp

Tamb = 25°C

-30

-40

Vcc=3V

-50

Vcc=5V

-60

-70

-80

-90

100

1000

10000

Frequency (Hz)

100000

Figure 32: HDout PSRR vs. frequency

(output mode 2, input grounded)

0

Output mode 2

-10 RL = 32Ω

Vripple = 0.2Vpp

-20 Tamb = 25°C

-30

-40

Vcc = 3V & 5V

-50

-60

-70

-80

100

1000

10000

Frequency (Hz)

100000

14/28

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