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MAX44251/MAX44252
20V, Ultra-Precision, Low-Noise Op Amps
ELECTRICAL CHARACTERISTICS
(V
DD
= 3.3V, V
SS
= 0V, V
IN+
= V
IN-
= V
DD
/2, R
L
= 10kI to V
DD
/2, T
A
= -40°C to +125°C, unless otherwise noted. Typical values
are at +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
Quiescent Current per Amplifier I
DD
R
L
= J
T
A
= +25NC
1.1 1.5
mA
-40NC < T
A
< +125NC
1.65
Power-Up Time t
ON
25
Fs
DC SPECIFICATIONS
Input Common-Mode Range V
CM
Guaranteed by CMRR test
V
SS
-
0.05
V
DD
-
1.5
V
Common-Mode Rejection Ratio
(Note 3)
CMRR
T
A
= +25NC, V
CM
= -0.05V to (V
DD
-
1.5V)
120 129
dB
-40NC < T
A
< +125NC
117
Input Offset Voltage (Note 3) V
OS
T
A
= +25NC
3 5.5
FV
-40NC < T
A
< +125NC
6.5
Input Offset Voltage Drift
(Note 3)
TC V
OS
8 18
nV/NC
Input Bias Current (Note 3) I
B
T
A
= +25NC
200 1100
pA
-40NC < T
A
< +125NC
1200
Input Offset Current (Note 3) I
OS
400 pA
Open-Loop Gain (Note 3) A
VOL
250mV P V
OUT
P V
DD
- 250mV,
R
L
= 10kI to
V
DD
/2
T
A
= +25NC
136 151
dB
-40NC < T
A
< +125NC
133
Output Short-Circuit Current To V
DD
or V
SS
Noncontinuous 58 mA
Output Voltage Low V
OL
V
OUT
- V
SS
R
L
= 10kI to V
DD
/2
5 22
mV
R
L
= 2kI to V
DD
/2
17 42
Output Voltage High V
OH
V
DD
- V
OUT
R
L
= 10kI to V
DD
/2
9 22
mV
R
L
= 2kI to V
DD
/2
29 52
AC SPECIFICATIONS
Input Voltage-Noise Density e
N
f = 1kHz 6.2
nV/√Hz
Input Voltage Noise 0.1Hz < f < 10Hz 123 nV
P-P
Input Current-Noise Density i
N
f = 1kHz 0.3
pA/√Hz
Input Capacitance C
IN
2 pF
Gain-Bandwidth Product GBW 10 MHz
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