MAX4237 Maxim, MAX4237 Datasheet - Page 12

• Manufacturer Part Number: MAX4237
• Description: The MAX4236/MAX4237 are high-precision op amps that feature an exceptionally low offset voltage and offset voltage temperature coefficient without using any chopper techniques
• Manufacturer: Maxim

SOT23, Very High Precision, 3V/5V
Rail-To-Rail Op Amps
current, low-noise inputs allow a minimum of capaci-
tance to be used.
Piezoresistive transducers applications require many of
the same qualities. For those applications the
MAX4236/MAX4237 high CMRR, PSRR, and offset sta-
bility are also a good match.
A typical application for a piezoresistive transducer
instrumentation
MAX4236/MAX4237 is shown in the Typical Application
Circuit.
In general, the MAX4236/MAX4237 are good compo-
nents for any application in which an amplifier with an
almost zero input current is required, including high-
precision, long time-constant integrators and electro-
chemical sensors.
The MAX4236/MAX4237 can operate from a single
+2.4V to +5.5V power supply, or from ±1.2V to ±2.75V
power supplies. The power supply pin(s) must be
bypassed to ground with a 0.1µF capacitor as close to
the pin as possible.
A good layout improves performance by decreasing
the amount of parasitic and stray capacitance, induc-
tance and resistance at the amplifier’s inputs, outputs,
and power-supply connections. Since parasitics might
be unavoidable, minimize trace lengths, resistor leads,
and place external components as close to the pins as
possible.
In high impedance, low input current applications, input
lines guarding and shielding, special grounding, and
other physical design and layout techniques, are
mandatory if good results are expected.
The negative effects of crosstalk, EMI and other forms
of interference and noise (thermal, acoustic, etc.) must
be accounted for and prevented beforehand for good
performance in the type of sensitive circuitry in which
the MAX4236/MAX4237 are likely to be used.
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Layout and Physical Design
amplifier
design
Power Supplies
using
the
TRANSISTOR COUNTS: 224
PROCESS: BiCMOS
MAX4236EUT
MAX4236AEUA
MAX4236BEUA
MAX4236AESA
MAX4236BESA
MAX4237EUT
MAX4237AEUA
MAX4237BEUA
MAX4237AESA
MAX4237BESA
PART
Typical Application Circuit
LOAD CELL
GRADE
—
—
A
B
A
B
A
B
A
B
Chip Information
MINIMUM
STABLE
Selector Guide
GAIN
MAX4236
MAX4236
1
1
1
1
1
5
5
5
5
5
-V
+V
-V
S
S
S
TOP MARK
V
+V
OUT
AAUW
AAUV
S
—
—
—
—
—
—
—
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