Datasheet

0.01
0.1
1
10
100
0.001 0.01 0.1 1
INPUT VOLTAGE (V
P-P
)
THD+N (%)
0.01
0.1
1
10
100
0.001 0.01 0.1 1
THD+N (%)
INPUT VOLTAGE (V
P-P
)
0.001
0.01
0.1
1
10
100
10 100 1000 10000 100000
FREQUENCY (Hz)
THD+N (%)
0.001
0.01
0.1
1
10
100
10 100 1000 10000 100000
FREQUENCY (Hz)
THD+N (%)
0.001
0.01
0.1
1
10
100
10 100 1000 10000 100000
FREQUENCY (Hz)
THD+N (%)
0.001
0.01
0.1
1
10
100
10 100 1000 10000 100000
FREQUENCY (Hz)
THD+N (%)
LMV1089
SNAS441H –SEPTEMBER 2008–REVISED MAY 2010 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS
Unless otherwise specified, T
J
= 25°C, V
DD
= 3.3V, Input Voltage = 18mV
P-P
, f =1 kHz, pass through mode (The voltage at
I
2
CV
DD
must not exceed the voltage on V
DD
), Pre Amp gain = 20dB, Post Amp gain = 6dB, R
L
= 100kΩ, and C
L
= 4.7pF.
THD+N THD+N
vs vs
Frequency, Mic1 = AC GND, Mic2 = 36mV
P-P
Frequency, Mic2 = AC GND, Mic1 = 36mV
P-P
Noise Canceling Mode Noise Canceling Mode
Figure 8. Figure 9.
THD+N THD+N
vs vs
Frequency, Mic1 = 36mV
P-P
Frequency, Mic2 = 36mV
P-P
Mic1 Pass Through Mode Mic2 Pass Through Mode
Figure 10. Figure 11.
THD+N THD+N
vs vs
Input Voltage, Mic1 = AC GND, f = 1kHz Input Voltage, Mic2 = AC GND, f = 1kHz
Mic2 Noise Canceling Mode Mic1 Noise Canceling Mode
Figure 12. Figure 13.
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