Operating Temperature Range ........................ -40NC to +125NC
Junction Temperature ....................................................+150NC
Lead Temperature (soldering 10s) .................................+300NC
Soldering Temperature (reflow) ......................................+260NC
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial.
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
DD
= 3.3V, V
SS
= 0V, V
IN+
= V
IN-
= V
CM
= V
DD
/2, R
L
= 10kI to V
DD
/2,
SHDN
= V
DD
, T
A
= -40NC to +125NC. Typical values are
at T
A
= +25NC, unless otherwise noted.) (Note 2)
PARAMETER
DC CHARACTERISTICS
Input Voltage Range
Input Offset Voltage
Input Offset Voltage Drift
(Note 3)
Input Bias Current (Note 3)
V
IN
+, V
IN
-
V
OS
TCV
OS
Guaranteed by CMRR
T
A
= +25NC
T
A
= -40NC to +125NC
MAX9636 only
MAX9637, MAX9638 only
T
A
= +25NC
I
B
T
A
= -40NC to +85NC
T
A
= -40NC to +125NC
Common-Mode Rejection Ratio
CMRR
V
SS
< V
CM
<
(V
DD
- 1.4V)
T
A
= +25NC
T
A
= -40NC to +125NC
72
68
58
104
100
77
124
120
55
40
R
L
= 10kI
RL = 600I
RL = 10kI
RL = 600I
0.014
0.044
0.019
0.057
0.01
0.03
0.08
0.04
0.1
1
dB
mA
V
V
FA
86
dB
±0.1
V
SS
-
0.1
0.01
V
DD
+
0.1
2.2
3.5
7
10
±0.8
±50
±800
pA
V
mV
FV/NC
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Open-Loop Gain
Output Short-Circuit Current
Output Voltage Low
Output Voltage High
Output Leakage in Shutdown
A
OL
I
SC
V
OL
V
OH
(V
SS
- 0.1V) < V
CM
< (V
DD
+ 0.1V)
V
OUT
= 0.25V from rails
V
OUT
= 0.4V from rails, R
L
= 600I
Short to V
DD
Short to V
SS
V
OUT
V
DD
- V
OUT
SHDN = V
SS
, V
OUT
= 0V to V
DD
(MAX9636,
MAX9638 only)
2
3V/5V Low-Power, Low-Noise, CMOS,
Rail-to-Rail I/O Op Amps
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3.3V, V
SS
= 0V, V
IN+
= V
IN-
= V
CM
= V
DD
/2, R
L
= 10kI to V
DD
/2,
SHDN
= V
DD
, T
A
= -40NC to +125NC. Typical values are
at T
A
= +25NC, unless otherwise noted.) (Note 2)
PARAMETER
AC CHARACTERISTICS
Input Voltage Noise Density
Input Voltage Noise
Input Current Noise Density
Input Capacitance
Gain Bandwidth
Slew Rate
Capacitive Loading
Distortion
Settling Time
Crosstalk
POWER-SUPPLY CHARACTERISTICS
Power-Supply Range
Power-Supply Rejection Ratio
Quiescent Current
Shutdown Supply Current
Shutdown Input
Shutdown Input
Shutdown Input Bias Current
(Note 3)
Turn-On Time
V
DD
PSRR
I
DD
I
DD_SHDN
V
IL
V
IH
I
SHDN
t
ON
Guaranteed by PSRR
V
IN
+ = V
IN
- = V
SS
,
V
DD
- V
SS
= 2.1V
to 5.5V
Per amplifier
T
A
= +25NC
T
A
= -40NC to +125NC
T
A
= +25NC
T
A
= -40NC to +125NC
2.1
72
69
36
55
60
1
0.5
1.4
1
60
100
100
5.5
V
dB
I
N
C
IN
GBW
SR
C
LOAD
THD
No sustained oscillations
f = 10kHz, V
O
= 2V
P-P
, A
V
= 1V/V
f = 10kHz, V
O
= 2V
P-P
, A
V
= 1V/V,
V
DD
= 5.5V
To 0.1%, V
OUT
= 2V step, A
V
= 1V/V
f = 1kHz (MAX9637, MAX9638)
f = 10kHz (MAX9637, MAX9638)
e
N
f = 1kHz
0.1Hz ≤ f ≤ 10Hz
f = 1kHz
38
5
0.9
2
1.5
0.9
300
-68
-74
11.5
100
80
dB
Fs
dB
nV/√Hz
FV
P-P
fA/√Hz
pF
MHz
V/Fs
pF
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX9636/MAX9637/MAX9638
FA
FA
V
V
nA
Fs
Fs
V
SHDN
P
V
IL
(MAX9636, MAX9638 only)
Over the power-supply range (MAX9636,
MAX9638 only)
Over the power-supply range (MAX9636,
MAX9638 only)
MAX9636, MAX9638 only
V
SHDN
= 0V to 3V (MAX9636, MAX9638
only)
Power-Up Time
t
UP
V
DD
= 0V to 3.3V
18
Note 2:
All devices are 100% production tested at T
A
= +25NC. Temperature limits are guaranteed by design.
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