MAX4208 Maxim, MAX4208 Datasheet - Page 10

• Manufacturer Part Number: MAX4208
• Description: The MAX4208/MAX4209 ultra-low offset and drift instrumentation amplifiers feature exceptional precision specifications, low power consumption, rail-to-rail output, excellent gain-bandwidth product, and buffered REFIN/MODE input in a very small &micro
• Manufacturer: Maxim

Ultra-Low Offset/Drift, Precision
Instrumentation Amplifiers with REF Buffer
(V
G = 100V/V (R1 = 1kΩ, R2 = 99kΩ), T
10
DD
______________________________________________________________________________________
= 5V, V
PIN
1
2
3
4
5
6
7
8
SS
REFIN/MODE
= 0V, V
NAME
OUT
REF
V
IN+
V
IN-
FB
DD
SS
CM
10,000
1000
100
10
= V
1
Reference/Shutdown Mode Input. Trimode function is as follows:
Connect to V
Connect to an external reference (between V
REFIN/MODE. Using the REF buffer allows the use of a simple resistor-divider or high-impedance
external reference to set the OUT level at 0mV IN with minimum error.
Connect to V
drive of REF.
Negative Differential Input
Positive Differential Input
Negative Supply Input. Bypass V
single-supply operation.
Output Reference Level. REF sets the OUT voltage for zero differential input. The internal buffer
sets the voltage at REF when the voltage at REFIN/MODE is between V
Feedback Input. Connect FB to the center tap of an external resistive divider from OUT to REF to
set the gain for the MAX4208. MAX4209 FB is internally connected to gain-setting resistors. Connect
an optional capacitor, C
Amplifier Output
Positive Supply Input. Bypass V
REF
= V
A
0.1% SETTLING TIME
= +25°C, unless otherwise noted.)
DD
10
/2, V
vs. GAIN
GAIN (V/V)
DD
SS
REFIN/MODE
to force the internal buffer output into a high-impedance state to allow external direct
to put the device in shutdown mode.
Typical Operating Characteristics (continued)
100
FB
, from OUT to FB to reduce autozero noise.
= V
1000
SS
DD
SS
, R
to ground with a 0.1µF capacitor.
to ground with a 0.1µF capacitor or connect to ground for
L
= 100kΩ to V
180
160
140
120
100
80
60
40
20
0
0.01
SS
FUNCTION
+ 0.2V and V
DD
SETTLING TIME
/2, V
vs. ACCURACY
ACCURACY (%)
DIFF
0.10
DD
= (V
- 1.3V) to buffer the voltage at
IN+
SS
G = 100
- V
+ 0.2V and V
Pin Description
IN-
1.00
) = 0V, MAX4208 set for
DD
- 1.3V.