max9814etdt Maxim Integrated Products, Inc., max9814etdt Datasheet - Page 5

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

500mV/div
(V
T
V
10,000
A
MICOUT
DD
1000
1.00
0.75
0.50
0.25
= +25°C, unless otherwise noted.)
100
10
0V
0
= 5V, C
10
0
V
MICBIAS NOISE vs. FREQUENCY
TH
V
TH
= 1V
CT
= 0.5V
100
= 470nF, C
50
FREQUENCY (Hz)
ATTACK TIME
V
V
OUT
V
IN
200µs/div
_______________________________________________________________________________________
TH
(mV
= 0.75V
1k
vs. V
RMS
)
CG
IN
100
AGC ENABLED
GAIN = 1
= 2.2µF, V
10k
C
CT
Microphone Amplifier with AGC and
= 47nF
100k
150
TH
= V
500mV/div
500mV/div
10mV/div
V
V
MICOUT
MICBIAS
MICOUT
V
Typical Operating Characteristics (continued)
MICIN
1.00
0.75
0.50
0.25
0V
0V
0V
0
0
V
Low-Noise Microphone Bias
SMALL-SIGNAL PULSE RESPONSE
x 0.4, GAIN = V
TH
V
TH
= 1V
= 0.5V
10
ATTACK TIME
V
OUT
V
V
200µs/div
IN
200µs/div
TH
(mV
= 0.75V
20
vs. V
RMS
DD
)
IN
(40dB), AGC disabled, no load, R
AGC ENABLED
GAIN = 0
30
C
C
CT
L
= 10pF
= 100nF
40
500mV/div
V
V
V
MICBIAS
MICOUT
MICOUT
V
5V/div
2V/div
1V/div
1.00
0.75
0.50
0.25
SHDN
0V
0V
0V
0
0V
0
V
TH
V
TH
= 1V
HOLD AND RELEASE TIME
= 0.5V
TURN-ON RESPONSE
5
L
V
V
OUT
V
= 10kΩ, C
TH
IN
20ms/div
20ms/div
(mV
= 0.75V
vs. V
AGC ENABLED
GAIN = UNCONNECTED
RMS
)
IN
10
OUT
C
A/R = GND
CT
= 47nF
= 1µF,
15
5