Datasheet

MAX4036–MAX4039
Low I
BIAS
, +1.4V/800nA, Rail-to-Rail Op Amps
with +1.2V Buffered Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +3V, V
SS
= V
CM
= 0V, V
OUT_
= V
DD
/2, R
L
to V
DD
/2, C
L
= 15pF, T
A
= +25°C, unless otherwise specified.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
R
L
= 100kΩ, 50mV ≤ V
OUT
≤ (V
DD
- 50mV) 80 108
Large-Signal Voltage Gain A
VOL
R
L
= 5kΩ, 150mV ≤ V
OUT
≤ (V
DD
- 150mV) 78 105
dB
R
L
= 100kΩ 25
Output Voltage Swing High V
DD
- V
OH
R
L
= 5kΩ 25 50
mV
R
L
= 100kΩ 25
Output Voltage Swing Low V
OL
- V
SS
R
L
= 5kΩ 25 50
mV
Output Short-Circuit Current I
SCO
To V
DD
or V
SS
±13 mA
Gain-Bandwidth Product GBW 4 kHz
Phase Margin θ
M
90 Degrees
Slew Rate SR 4 V/ms
Power-On Time t
ON
(Note 3) 0.25 ms
Input Noise-Voltage Density e
n
f = 1kHz 500 nV/√Hz
Capacitive-Load Stability C
LOAD
A
VCL
= 1V/V, no sustained oscillations 5000 pF
REFERENCE (MAX4037/MAX4039)
Reference Voltage V
REF
1.226 1.232 1.238 V
Line Regulation
ΔV
REF
/
ΔV
DD
V
DD
= +1.8V to +3.6V 0.3 %/V
0 ≤ I
LOAD
≤ 100µA, sourcing 0.0015
Load Regulation
ΔV
REF
/
ΔI
LOAD -20µA ≤ I
LOAD
≤ 0, sinking 0.0075
%/µA
Reference Output Voltage Noise e
n
0.1Hz to 10Hz 60 µV
P-P
Short to V
DD
0.25
Output Short-Circuit Current I
SCR
Short to V
SS
1.9
mA
Capacitive-Load Stability Range C
LOAD
(Note 1) 0 250 pF
ELECTRICAL CHARACTERISTICS
(V
DD
= +3V, V
SS
= V
CM
= 0V, V
OUT_
= V
DD
/2, R
L
to V
DD
/2, C
L
= 15pF, T
A
= T
MIN
to T
MAX
, unless otherwise specified.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4036/MAX4038, guaranteed by PSRR
test
1.4 3.6
Supply Voltage Range V
DD
MAX4037/MAX4039, guaranteed by PSRR
and line regulation tests
1.8 3.6
V
V
DD
= 1.4V 1.7
MAX4036
V
DD
= 3.6V 1.8
V
DD
= 1.4V 2.0
MAX4036A
V
DD
= 3.6V 2.1
V
DD
= 1.8V 3.1
Supply Current I
DD
MAX4037
V
DD
= 3.6V 3.2
µA