max9814etdt Maxim Integrated Products, Inc., max9814etdt Datasheet - Page 4

• Manufacturer Part Number: max9814etdt
• Description: Max9814 Microphone Amplifier With Agc And Low-noise Microphone Bias
• Manufacturer: Maxim Integrated Products, Inc.

Microphone Amplifier with AGC and
Low-Noise Microphone Bias
(V
T
4
A
DD
= +25°C, unless otherwise noted.)
0.01
_______________________________________________________________________________________
0.1
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
80
70
60
50
40
30
20
10
10
0
1
= 5V, C
TOTAL HARMONIC DISTORTION PLUS NOISE
2.5
10
10
3.0
GAIN = UNCONNECTED
CT
100
100
vs. SUPPLY VOLTAGE
GAIN vs. FREQUENCY
= 470nF, C
SUPPLY CURRENT
3.5
GAIN = 0
SUPPLY VOLTAGE (V)
vs. FREQUENCY
FREQUENCY (Hz)
FREQUENCY (Hz)
4.0
1k
1k
4.5
GAIN = 1
V
CG
OUT
5.0
= 2.2µF, V
= 800mV
10k
10k
5.5
RMS
100k
100k
6.0
TH
= V
MICBIAS
0.01
-10
-20
-30
-40
-50
-60
-70
-80
0.1
0.5
0.4
0.3
0.2
0.1
10
1
0
0
TOTAL HARMONIC DISTORTION PLUS NOISE
2.5
10
0
POWER-SUPPLY REJECTION RATIO
x 0.4, GAIN = V
3.0
f
IN
100
SHUTDOWN CURRENT
vs. OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
= 10kHz
f
and 3kHz
OUTPUT VOLTAGE (V
IN
3.5
SUPPLY VOLTAGE (V)
vs. FREQUENCY
= 300Hz, 1kHz,
0.5
FREQUENCY (Hz)
4.0
1k
4.5
Typical Operating Characteristics
DD
V
RIPPLE
1.0
RMS
(40dB), AGC disabled, no load, R
5.0
10k
= 200mV
)
5.5
P-P
100k
1.5
6.0
1000
-100
-110
100
-30
-40
-50
-60
-70
-80
-90
2.5
2.0
1.5
1.0
0.5
10
MICBIAS POWER-SUPPLY REJECTION RATIO
0
1
0.01
vs. MICROPHONE BIAS SOURCE CURRENT
10
0
MICROPHONE BIAS VOLTAGE
5
INPUT-REFERRED NOISE
100
0.1
vs. FREQUENCY
vs. FREQUENCY
10
FREQUENCY (kHz)
FREQUENCY (Hz)
L
I
MICBIAS
= 10kΩ, C
1k
15
1
(mA)
MICIN AC-COUPLED
TO GND
V
RIPPLE
20
OUT
10k
= 200mV
10
25
= 1µF,
P-P
100k
100
30