TS421 datasheet(19/42 Pages) STMICROELECTRONICS

19 / 42 page

Figure 43. THD + N vs. output power RL = 32 Ω,

Cb = 1 µF

100

0.1

Vcc=5V

Vcc=3.3V

Vcc=2.5V

Vcc=2V

RL = 32

Ω

F = 20kHz

Av = 2

Cb = 1µF

BW < 125kHz

Tamb = 25°C

Output Power (mW)

Figure 44. THD + N vs. frequency RL = 8 Ω

100

1000

10000

0.01

0.1

Vcc=2V, Po=28mW

Vcc=5V, Po=300mW

RL=8

Ω

Av=2

Cb = 1µF

Bw < 125kHz

Tamb = 25°C

20k

Frequency (Hz)

Figure 45. THD + N vs. frequency RL = 16 Ω

100

1000

10000

0.01

0.1

Vcc=2V, Po=20mW

Vcc=5V, Po=220mW

RL=16

Ω

Av=2

Cb = 1µF

Bw < 125kHz

Tamb = 25°C

20k

Frequency (Hz)

Figure 46. THD + N vs. frequency RL = 32 Ω

100

1000

10000

0.01

0.1

Vcc=2V, Po=13mW

Vcc=5V, Po=150mW

RL=32

Ω

Av=2

Cb = 1µF

Bw < 125kHz

Tamb=25°C

20k

Frequency (Hz)

Figure 47. Signal to noise ratio vs. power supply

voltage with unweighted filter (20 Hz to 20 kHz)

2.0

2.5

3.0

3.5

4.0

4.5

5.0

100

Av = 2

Cb = 1

µF

THD+N < 0.5%

Tamb = 25°C

RL=32

Ω

RL=16

Ω

RL=8

Ω

Power Supply Voltage (V)

Figure 48. Signal to noise ratio vs. power supply

voltage with weighted filter Type A

2.0

2.5

3.0

3.5

4.0

4.5

5.0

100

105

Av = 2

Cb = 1

µF

THD+N < 0.5%

Tamb = 25°C

RL=32

Ω

RL=16

Ω

RL=8

Ω

Power Supply Voltage (V)

TS419, TS421

Electrical characteristics curves

DS3048 - Rev 7

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