MAX9812/MAX9813
Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain
Microphone Amplifiers with Integrated Bias
Typical Operating Characteristics (continued)
(V
= 3.3V (MAX9812L/MAX9813L), V
= 5V (MAX9812H/MAX9813H), V
= 0V, R = 10kΩ to V /2, SHDN = V , T = +25°C,
GND
L CC CC A
CC
CC
unless otherwise noted.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT AMPLITUDE
1
10
BW = 22Hz TO 22kHz
H VERSION
BW = 22Hz TO 22kHz
1
0.1
V
= 1V
RMS
OUT
L
0.1
0.01
R = 2kΩ
f = 10kHz
V
= 1V
0.01
0.001
OUT
L
RMS
f = 100Hz
R = 10kΩ
f = 1kHz
0.001
10
100
1k
10k
100k
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT AMPLITUDE (V
FREQUENCY (Hz)
)
RMS
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT AMPLITUDE
INPUT-REFERRED NOISE vs. FREQUENCY
100
100
INPUTS AT AC GND
L VERSION
BW = 22Hz TO 22kHz
10
1
f = 1kHz
f = 10kHz
70
50
0.1
30
10
0.01
0.001
f = 100Hz
10
100
1k
10k
100k
0
0.5
1.0
1.5
FREQUENCY (Hz)
OUTPUT AMPLITUDE (V
)
RMS
OFF-ISOLATION vs. FREQUENCY
BIAS NOISE vs. FREQUENCY
10
0
10,000
1000
100
MAX9813
= 100mV
V
IN1
RMS
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
IN1 TO OUT WITH
IN2 SELECTED
10
10
100
1k
FREQUENCY (Hz)
10k
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
Maxim Integrated
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
