Datasheet
(V
DD
= 5V, V
SS
= 0V, V
CM
= V
REF
= V
DD
/2, V
REFIN/MODE
= V
SS
, R
L
= 100kΩ to V
DD
/2, V
DIFF
= (V
IN+
- V
IN-
) = 0V, MAX4208 set for
G = 100V/V (R1 = 1kΩ, R2 = 99kΩ), T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Power-Supply Rejection Ratio PSRR
V
DD
= 2.85V to 5.5V, V
REF
= V
CM
=
(V
SS
+ 0.5V)
100 125 dB
REFIN/MODE AND REF DC CHARACTERISTICS
REFIN/MODE Buffer Input Offset
Voltage
(Note 2) ±10 ±40 µV
REFIN/MODE Input Voltage Low V
IL
Reference buffer is OFF V
SS
V
SS
+
0.05
V
REFIN/MODE Input Voltage High V
IH
Shutdown mode
V
DD
-
0.2
V
DD
V
REFIN/MODE Buffered
Reference Input Range
V
REFIN/MODE
Reference buffer is ON, guaranteed by
REFIN/MODE CMRR test
V
SS
+
0.2
V
DD
-
1.3
V
REFIN/MODE Buffer
Common-Mode Rejection Ratio
(V
SS
+ 0.2V) ≤ V
REF/MODE
≤ (V
DD
- 1.3V)
(Note 2)
106 135 dB
REFIN/MODE Buffer
Power-Supply Rejection Ratio
V
DD
= 2.85V to 5.5V, V
REF/MODE
= V
CM
= (V
SS
+ 0.5V)
100 125 dB
REFIN/MODE Bias Current I
REFIN
V
SS
< V
REFIN/MODE
< V
DD
(Note 3) 1 pA
REF Common-Mode Range
Guaranteed by reference CMRR test
(Note 4)
V
SS
V
DD
-
1.30
V
REF Common-Mode Rejection
Ratio
V
SS
≤ V
REF
≤ (V
DD
- 1.30V)
(Note 4)
106 135 dB
REF, FB Bias Current MAX4208 (Note 3) 1 pA
REF Input Current (MAX4209) I
REF
V
DIFF
= 0V (Note 5) ±10 nA
V
DIFF
= ±100mV (Note 5) ±100 µA
OUTPUT DC CHARACTERISTICS
Output Voltage Swing
(Notes 6 and 7)
V
OH
V
DD
- V
OUT
R
L
= 100kΩ 30 45
mV
R
L
= 10kΩ 50 70
R
L
= 1kΩ 250 325
V
OL
V
OUT
- V
SS
R
L
= 100kΩ 30 40
R
L
= 10kΩ 50 65
R
L
= 1kΩ 250 285
Short-Circuit Current I
SC
Source +20
mA
Sink -25
Short-Circuit Recovery Time 0.50 ms
AC CHARACTERISTICS
Gain-Bandwidth Product GBW MAX4208, G = 1V/V 750 kHz
Small-Signal Bandwidth BW MAX4209H, G =100V/V 7.5 kHz
Slew Rate (Note 8) SR MAX4208, G = 1V/V, V
OUT
= 100mV step 80 V/ms
MAX4208/MAX4209 Ultra-Low Offset/Drift, Precision
Instrumentation Ampliers with REF Buffer
www.maximintegrated.com
Maxim Integrated
│
3
Electrical Characteristics (continued)