TS472EIJT datasheet(9/20 Pages) STMICROELECTRONICS

Nome de Peças	TS472EIJT

Descrição Electrónicos	Very Low Noise Microphone Preamplifier with 2V Biased Output and Active Low Standby Mode

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Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

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TS472

Electrical Characteristics

9/20

Figure 14. Single-ended output PSRR vs.

frequency

Figure 15. Equivalent input noise voltage

density

Figure 16.

∆ gain vs. power supply voltage

Figure 17.

∆gain vs. ambient temperature

Figure 18. Maximum input voltage vs. gain,

THD+N<1%

Figure 19. Maximum input voltage vs. power

supply voltage, THD+N<1%

100

1000

10000

-80

-70

-60

-50

-40

-30

-20

-10

0

Vcc=5V

Vcc=2.2V

Vcc=3V

Vripple=200mVpp

Inputs grounded

Cb=1

µF

Cin=100nF

Tamb=25

°C

Frequency (Hz)

50

20k

10

100

1k

10k

100k

1

10

100

1000

Cin=100nF

R

EQ

=100

Ω

T

AMB

=25

°C

Frequency (Hz)

34

5

-0.4

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

Maximum Gain

Gain=20dB

F=1kHz

Vin=5mV

Tamb=25°C

Minimum Gain

Power Supply Voltage (V)

2.2

5.5

-40

-20

0

20

406080

-1.00

-0.75

-0.50

-0.25

0.00

0.25

0.50

Maximum Gain

F=1kHz

V

IN

=5mV

Gain=20dB

Minimum Gain

Ambient Temperature (°C)

0

102030

40

0

50

100

150

V

CC

=2.2V

T

AMB

=25°C

F=1kHz

THD+N<1%

Gain (dB)

V

CC

=5.5V

V

CC

=3V

345

0

20

40

60

80

100

120

140

Gain=20dB

Gain=0dB

T

AMB

=25°C, F=1kHz, THD+N<1%

Power Supply Voltage (V)

Gain=30dB

Gain=40dB

2.2

5.5

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