TS472_06 Datasheet, PDF (13/24 Pages) STMicroelectronics – Very low noise microphone preamplifier with 2.0V bias output and active low standby mode

TS472
Electrical characteristics
Figure 26. THD+N vs. input voltage
10
GS floating
GS=bias
1
Figure 27. THD+N vs. input voltage
10
GS floating
GS grounded
1
GS=bias
0.1
0.1
GS grounded
Tamb=25°C, Vcc=3V, F=20kHz,
0.01 _{Cb=1μF, RL=10kΩ , BW=100Hz-120kHz}
Tamb=25°C, Vcc=5V, F=20kHz,
0.01 _{Cb=1μF, RL=10kΩ , BW=100Hz-120kHz}
1E-3
0.01
0.1
0.3
1E-3
0.01
0.1
0.3
Input Voltage (V)
Input Voltage (V)
Figure 28. THD+N vs. frequency
10
Tamb=25°C
Vcc=3V
RL=10kΩ
Cb=1μF
BW=100Hz-120kHz
GS=bias, Vin=100mV
1
GS grounded, Vin=20mV
Figure 29. THD+N vs. frequency
10
Tamb=25°C
Vcc=5V
RL=10kΩ
Cb=1μF
BW=100Hz-120kHz
GS=bias, Vin=100mV
1 _{GS grounded, Vin=20mV}
0.1
50 100
GS floating, Vin=100mV
1000
Frequency (Hz)
10000 20k
0.1
50
GS floating, Vin=100mV
100
1000
Frequency (Hz)
Figure 30. Transient response
Figure 31. Transient response
10000 20k
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