Datasheet

3Maxim Integrated
MAX44250/MAX44251/MAX44252
20V, Ultra-Precision, Low-Noise Op Amps
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 10V, 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 T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Offset Voltage (MAX44251/
MAX44252)(Note 3)
V
OS
T
A
= +25NC
3 6
FV
-40NC < T
A
< +125NC
7
Input Offset Voltage Drift
(MAX44250) (Note 3)
TC V
OS
5 26
nV/NC
Input Offset Voltage Drift
(MAX44251/MAX44252)(Note 3)
TC V
OS
5 19
nV/NC
Input Bias Current (MAX44250)
(Note 3)
I
B
T
A
= +25NC
200 1400 pA
Input Bias Current (MAX44251/
MAX44252)(Note 3)
I
B
T
A
= +25NC
200 1300
pA
-40NC < T
A
< +125NC
2400
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
145 154
dB
-40NC < T
A
<
+125NC
136
Output Short-Circuit Current To V
DD
or V
SS
Noncontinuous 96 mA
Output Voltage Low
(MAX44250)
V
OL
V
OUT
- V
SS
R
L
= 10kI to V
DD
/2
12 26
mV
R
L
= 2kI to V
DD
/2
45 92
Output Voltage Low
(MAX44251/MAX44252)
V
OL
V
OUT
- V
SS
R
L
= 10kI to V
DD
/2
12 25
mV
R
L
= 2kI to V
DD
/2
45 85
Output Voltage High
(MAX44250)
V
OH
V
DD
- V
OUT
R
L
= 10kI to V
DD
/2
18 40
mV
R
L
= 2kI to V
DD
/2
71 148
Output Voltage High
(MAX44251/MAX44252)
V
OH
V
DD
- V
OUT
R
L
= 10kI to V
DD
/2
18 37
mV
R
L
= 2kI to V
DD
/2
71 135
AC SPECIFICATIONS
Input Voltage-Noise Density e
N
f = 1kHz 5.9
nV/√Hz
Input Voltage Noise 0.1Hz < f < 10Hz 123 nV
P-P
Input Current-Noise Density i
N
f = 1kHz 0.6
pA/√Hz
Input Capacitance C
IN
2 pF
Gain-Bandwidth Product GBW 10 MHz
Phase Margin PM C
L
= 20pF 60 Degrees
Slew Rate SR A
V
= 1V/V, V
OUT
= 2V
P-P
8
V/Fs
Capacitive Loading C
L
No sustained oscillation, A
V
= 1V/V 500 pF
Total Harmonic Distortion THD
V
OUT
= 2V
P-P
,
A
V
= +1V/V,
R
L
= 10kI to
V
DD
/2
f = 1kHz -124
dB
f = 20kHz -119
Settling Time To 0.01%, V
OUT
= 2V step, A
V
= -1V/V 400 ns