Datasheet

5Maxim Integrated
MAX44250/MAX44251/MAX44252
20V, Ultra-Precision, Low-Noise Op Amps
ELECTRICAL CHARACTERISTICS (continued)
(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 T
A
= +25°C.) (Note 2)
Typical Operating Characteristics
(V
DD
= 10V, V
SS
= 0V, outputs have R
L
= 10kI to V
DD
/2. T
A
= +25NC, unless otherwise specified.)
Note 2: All devices are 100% production tested at T
A
= +25°C. Temperature limits are guaranteed by design.
Note 3: Guaranteed by design.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
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
Phase Margin PM C
L
= 20pF 60 Degrees
Slew Rate SR A
V
= 1V/V, V
OUT
= 1V
P-P
, 10% to 90% 5 V/Fs
Capacitive Loading C
L
No sustained oscillation, A
V
= 1V/V 500 pF
Total Harmonic Distortion THD
V
OUT
= 1V
P-P
,
A
V
= +1V/V,
V
CM
= V
DD
/4,
R
L
= 10kI to
V
DD
/2
f = 1kHz -124
dB
f = 20kHz -100
Settling Time To 0.01%, V
OUT
= 1V step, A
V
= -1V/V 200 ns
OFFSET VOLTAGE HISTOGRAM
MAX44250 toc01
OFFSET VOLTAGE (µV)
PERCENT OCCURRENCE (%)
4.54.03.02.0 3.51.5 2.51.00.5
10
5
15
20
25
30
35
40
45
50
55
60
65
70
75
0
0 5.55.0
INPUT OFFSET VOLTAGE DRIFT HISTOGRAM
MAX44250 toc02
OFFSET VOLTAGE DRIFT (µV/°C)
PERCENT OCCURRENCE (%)
0.0050.0040.002 0.0030 0.001-0.001
5
10
15
20
25
30
35
40
45
0
0.006
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX44250 toc03
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
2015105
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
02
5
T
A
= +85°C
T
A
= +25°C
T
A
= 0°C
T
A
= -40°C
SUPPLY CURRENT
PER AMPLIFIER
T
A
= +125°C