Datasheet
MAX4238/MAX4239
Ultra-Low Offset/Drift, Low-Noise,
Precision SOT23 Amplifiers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(2.7V ≤ V
CC
≤ 5.5V, V
CM
= GND = 0V, V
OUT
= V
CC
/2, R
L
= 10kΩ connected to V
CC
/2, SHDN = V
CC
, T
A
= +25
°
C,
unless otherwise noted.)
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.
Power-Supply Voltage (V
CC
to GND).......................................6V
All Other Pins .................................(GND - 0.3V) to (V
CC
+ 0.3V)
Output Short-Circuit Duration
(OUT shorted to V
CC
or GND) ...............................Continuous
Continuous Power Dissipation (T
A
= +70
°
C)
6-Pin Plastic SOT23 (derate 9.1mW/
°
C above +70
°
C).727mW
8-Pin Plastic SO (derate 5.88mW/
°
C above +70
°
C).....471mW
Operating Temperature Range ..........................-40
°
C to +125
°
C
Junction Temperature ......................................................+150
°
C
Storage Temperature Range..............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s) .................................+300
°
C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Offset Voltage V
OS
(Note 1) 0.1 2 µV
Long-Term Offset Drift 50 nV/1000hr
Input Bias Current I
B
(Note 2) 1 pA
Input Offset Current I
OS
(Note 2) 2 pA
Input Noise Voltage e
nP-P
R
S
= 100Ω, 0.01Hz to 10Hz 1.5 µV
P-P
Common-Mode Input
Voltage Range
V
CM
Inferred from CMRR test
GND
- 0.1
V
CC
-
1.3
V
Common-Mode Rejection Ratio CMRR -0.1V ≤ V
CM
≤ V
CC
- 1.3V (Note 1) 120 140 dB
Power-Supply Rejection Ratio PSRR 2.7V ≤ V
CC
≤ 5.5V (Note 1) 120 140 dB
0.05V ≤ V
OU T
≤ V
C C
- 0.05V
( N ote 1)
R
L
= 10kΩ 125 150
Large-Signal Voltage Gain A
VOL
0.1V ≤ V
OUT
≤ V
CC
- 0.1V
(Note 1)
R
L
= 1kΩ 125 145
dB
V
CC
- V
OH
410
R
L
= 10kΩ
V
OL
410
V
CC
- V
OH
35 50
Output Voltage Swing V
OH
/V
OL
R
L
= 1kΩ
V
OL
35 50
mV
Output Short-Circuit Current To either supply 40 mA
Output Leakage Current 0 ≤ V
OUT
≤ V
CC
, SHDN = GND (Note 2) 0.01 1 µA
MAX4238 0.35
Slew Rate
V
CC
= 5V, C
L
= 100pF,
V
OUT
= 2V step
MAX4239 1.6
V/µs
MAX4238 1
Gain-Bandwidth Product GBWP
R
L
= 10kΩ, C
L
= 100pF,
measured at f = 100kHz
MAX4239 6.5
MHz
MAX4238 1
Minimum Stable Closed-Loop
Gain
R
L
= 10kΩ, C
L
= 100pF,
phase margin = 60
o
MAX4239 10
V/V