Datasheet

3Maxim Integrated
3V/5V Low-Power, Low-Noise, CMOS,
Rail-to-Rail I/O Op Amps
MAX9636/MAX9637/MAX9638
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3.3V, V
SS
= 0V, V
IN+
= V
IN-
= V
CM
= V
DD
/2, R
L
= 10kI to V
DD
/2, SHDN = V
DD
, T
A
= -40NC to +125NC. Typical values are
at T
A
= +25NC, unless otherwise noted.) (Note 2)
Note 2: All devices are 100% production tested at T
A
= +25NC. Temperature limits are guaranteed by design.
Note 3: Parameter is guaranteed by design.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
AC CHARACTERISTICS
Input Voltage Noise Density e
N
f = 1kHz 38 nV/√Hz
Input Voltage Noise 0.1Hz ≤ f ≤ 10Hz 5 FV
P-P
Input Current Noise Density I
N
f = 1kHz 0.9 fA/√Hz
Input Capacitance C
IN
2 pF
Gain Bandwidth GBW 1.5 MHz
Slew Rate SR 0.9 V/Fs
Capacitive Loading C
LOAD
No sustained oscillations 300 pF
Distortion THD
f = 10kHz, V
O
= 2V
P-P
, A
V
= 1V/V -68
dB
f = 10kHz, V
O
= 2V
P-P
, A
V
= 1V/V,
V
DD
= 5.5V
-74
Settling Time To 0.1%, V
OUT
= 2V step, A
V
= 1V/V 11.5 Fs
Crosstalk
f = 1kHz (MAX9637, MAX9638) 100
dB
f = 10kHz (MAX9637, MAX9638) 80
POWER-SUPPLY CHARACTERISTICS
Power-Supply Range V
DD
Guaranteed by PSRR 2.1 5.5 V
Power-Supply Rejection Ratio PSRR
V
IN+
= V
IN-
= V
SS
,
V
DD
- V
SS
= 2.1V
to 5.5V
T
A
= +25NC 72 100
dB
T
A
= -40NC to +125NC 69
Quiescent Current I
DD
Per amplifier
T
A
= +25NC 36 55
FA
T
A
= -40NC to +125NC 60
Shutdown Supply Current I
DD_SHDN
V
SHDN
P V
IL
(MAX9636, MAX9638 only) 1 FA
Shutdown Input V
IL
Over the power-supply range (MAX9636,
MAX9638 only)
0.5 V
Shutdown Input V
IH
Over the power-supply range (MAX9636,
MAX9638 only)
1.4 V
Shutdown Input Bias Current
(Note 3)
I
SHDN
MAX9636, MAX9638 only 1 100 nA
Turn-On Time t
ON
V
SHDN
= 0V to 3V (MAX9636, MAX9638
only)
60 Fs
Power-Up Time t
UP
V
DD
= 0V to 3.3V 18 Fs