TS472 datasheet(12/25 Pages) STMICROELECTRONICS

Numer części	TS472

Szczegółowy opis	Very low noise microphone preamplifier with 2.0 V bias output and active low standby mode

PDF	25 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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12 / 25 page

Electrical characteristics

TS472

12/25

Doc ID 11015 Rev 6

Figure 26.

THD+N vs. input voltage

Figure 27.

THD+N vs. input voltage

1E-3

0.01

0.1

0.01

0.1

GS grounded

GS=bias

Tamb=25°C, Vcc=3V, F=20kHz,

Cb=1

μF, RL=10kΩ , BW=100Hz-120kHz

Input Voltage (V)

0.3

GS floating

1E-3

0.01

0.1

0.01

0.1

GS floating

GS=bias

GS grounded

Tamb=25°C, Vcc=5V, F=20kHz,

Cb=1

μF, RL=10kΩ , BW=100Hz-120kHz

Input Voltage (V)

0.3

Figure 28.

THD+N vs. frequency

Figure 29.

THD+N vs. frequency

100

1000

10000

0.1

GS=bias, Vin=100mV

GS floating, Vin=100mV

GS grounded, Vin=20mV

Tamb=25°C

Vcc=3V

RL=10k

Cb=1

μF

BW=100Hz-120kHz

20k

Frequency (Hz)

100

1000

10000

0.1

GS=bias, Vin=100mV

GS floating, Vin=100mV

GS grounded, Vin=20mV

Tamb=25

°C

Vcc=5V

RL=10k

Cb=1

μF

BW=100Hz-120kHz

20k

Frequency (Hz)

Figure 30.

Transient response

Figure 31.

Common mode rejection ratio

(CMRR) vs frequency

100

10k

-100

-80

-60

-40

-20

ΔVicm=200mVpp, V

=3V

μF, T

AMB

=25°C

Gain=20dB

Maximum Gain

Minimum Gain

Frequency (Hz)

20k

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