Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= 3.3V, I
BIAS
= 500µA (MAX9812L/MAX9813L), V
CC
= 5V, I
BIAS
= 800µA (MAX9812H/MAX9813H), V
GND
= 0V, R
L
= open,
SHDN
= V
CC
, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
GENERAL
Supply Voltage Range
Supply Current
Shutdown Supply Current
Amplifier Output Bias Voltage
Input Resistance
Voltage Gain
V
CC
I
CC
I
CC_SHDN
V
OUT_DC
R
IN
A
V
DC
Power-Supply Rejection Ratio
PSRR
OUT
Input referred, T
A
= +25°C
f = 217Hz
f = 1kHz
f = 10kHz
R
L
= 10kΩ to V
CC
/2
V
OH
Output Voltage Swing
V
OL
Output Short-Circuit Current
Small-Signal -3dB Bandwidth
Output Capacitive-Load Stability
Output Impedance
Output Slew Rate
I
OUT_SC
BW
C
L
Z
OUT
SR
R
L
= 1kΩ to V
CC
/2
R
L
= 10kΩ to V
CC
/2
R
L
= 1kΩ to V
CC
/2
Sinking or sourcing
V
OUT
= 10mV
P-P
No sustained oscillations
f = 1kHz
V
OUT
= 1V step
3
V
CC
-
0.25V
19
90
MAX9812L/MAX9813L
MAX9812H/MAX9813H
I
BIAS
= 0A
SHDN
= GND
MAX9812L/MAX9813L
MAX9812H/MAX9813H
1.35
2.25
Inferred from
PSRR test
2.7
4.5
230
0.1
1.5
2.5
85
20
100
100
100
90
V
CC
-
0.1
V
CC
-
0.1V
0.1
0.1
12
400
50
0.5
1
0.25
24
mA
kHz
pF
Ω
V/µs
V
dB
21
3.6
5.5
400
1
1.65
2.75
V
µA
µA
V
kΩ
dB
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
2
Maxim Integrated
MAX9812/MAX9813
Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain
Microphone Amplifiers with Integrated Bias
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.3V, I
BIAS
= 500µA (MAX9812L/MAX9813L), V
CC
= 5V, I
BIAS
= 800µA (MAX9812H/MAX9813H), V
GND
= 0V, R
L
= open,
SHDN
= V
CC
, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
Amplifier Input Voltage-Noise
Density
Total Integrated Input Noise
Off-Isolation
SYMBOL
e
n
V
n
CONDITIONS
Inputs at AC GND
f = 1kHz
MIN
TYP
40
5
75
60
0.04
%
VOUT = 4V
P-P
(H version)
2.1
3.6
70
0.015
MAX
UNITS
nV/√Hz
µV
RMS
dB
22Hz to 22kHz BW, inputs at AC GND
Input referred, MAX9813
only
f = 1kHz, R
L
= 10kΩ to
V
CC
/2, BW = 22Hz to
22kHz
1kHz
10kHz
VOUT = 1V
P-P
(L version)
Total Harmonic Distortion Plus
Noise
BIAS
Bias Output Voltage Range
Bias Output Resistance
Power-Supply Rejection Ratio
(V
CC
to BIAS)
BIAS Current Limit
BIAS Capacitive-Load Stability
Total Integrated BIAS Noise
DIGITAL INPUTS (SHDN, IN1/IN2)
Logic-Low Threshold
Logic-High Threshold
Logic Input Current
Shutdown Enable Time
Shutdown Disable Time
IN1/IN2 Select Time
THD+N
V
BIAS
R
BIAS
MAX9812L/MAX9813L
MAX9812H/MAX9813H
DC, T
A
= +25°C
2.30
4.0
0.1
80
80
75
55
2.55
4.4
V
Ω
PSRR
BIAS
f = 217Hz
f = 1kHz
f = 10kHz
BIAS short to GND
No sustained oscillations
22Hz to 22kHz BW
5
dB
I
BIAS_SC
C
BIAS
V
n
V
IL
V
IH
I
IN
t
SHDN_ON
t
SHDN_OFF
t
SEL
22
50
29
50
mA
pF
µV
RMS
0.8
2.0
SHDN
= GND or V
CC
95% of settled value
10
50
10
±1
V
V
µA
ms
µs
µs
Note 1:
All specifications are 100% tested at T
A
= +25°C. Temperature limits are guaranteed by design.
