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.)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX4208/9 toc10
FREQUENCY (Hz)
GAIN (dB)
10k 100k1k100
-120
-100
-80
-60
-40
-20
0
-140
10 1M
2.0
1.5
1.0
0.5
0
2.5 4.03.0 3.5 4.5 5.0 5.5
SUPPLY CURRENT (BUFFER ON)
vs. SUPPLY VOLTAGE
MAX4208/9 toc15
V
DD
(V)
I
DD
(mA)
V
REFIN/MODE
= V
DD
/2
T
A
= -40°C
T
A
= +25°C
T
A
= +125°C
MAX4208 INPUT-REFERRED NOISE
MAX4208/9 toc11
1s/div
1.2µV/div
0
2.0
1.0
4.0
3.0
5.0
6.0
2.5 3.5 4.03.0 4.5 5.0 5.5
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
MAX4208/9 toc16
V
DD
(V)
I
DD
(µA)
T
A
= -40°C
T
A
= +25°C
T
A
= +125°C
V
REFIN/MODE
= V
DD
INPUT NOISE vs. FREQUENCY
MAX4208/9 toc12
FREQUENCY (Hz)
INPUT-NOISE DENSITY (nV/√Hz)
100 1k
10
100
1000
10,000
1
10 10k 100k
C
FB
= 1nF
CAPACITOR
C
FB
= 10nF
CAPACITOR
WHITE NOISE
140nV/Hz
0
0.3
0.6
0.9
1.2
1.5
0 2.0 2.51.0 1.50.5 3.0 3.5 4.0 4.5 5.0
I
DD
vs. V
REFIN/MODE
MAX4208/9 toc13
V
REFIN/MODE
(V)
I
DD
(mA)
GREY = OUT OF
COMMON-MODE RANGE
INTERNAL BUFFER ON
V
REFIN/MODE
(V
SS
+ 0.2V)
INTERNAL BUFFER OFF
V
REFIN/MODE
(V
SS
+ 0.05V)
SHUTDOWN MODE
400
600
500
800
700
900
1000
2.5 3.5 4.03.0 4.5 5.0 5.5
SUPPLY CURRENT (BUFFER OFF)
vs. SUPPLY VOLTAGE
MAX4208/9 toc14
V
DD
(V)
I
DD
(µA)
V
REFIN/MODE
= V
SS
T
A
= -40°C
T
A
= +25°C
T
A
= +125°C
MAX4208/MAX4209 Ultra-Low Offset/Drift, Precision
Instrumentation Ampliers with REF Buffer
Maxim Integrated │ 8
www.maximintegrated.com
Typical Operating Characteristics (continued)