MAX44246_13 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 36V, Low-Noise, Precision, Dual Op Amp

EVALUATION KIT AVAILABLE
MAX44246
36V, Low-Noise, Precision, Dual Op Amp
General Description
The MAX44246 is a 36V, ultra-precision, low-noise, low-
drift, dual operational amplifier that offers near-zero DC
offset and drift through the use of patented chopper
stabilized and auto-zeroing techniques. This method
constantly measures and compensates the input offset,
eliminating drift over time and temperature and the effect
of 1/f noise. This dual device features rail-to-rail outputs,
operates from a single 2.7V to 36V supply or dual ±1.35V
to ±18V supplies, and consumes only 0.42mA per chan-
nel, with only 9nV/√Hz input-referred voltage noise.
The IC is unity-gain stable with a gain-bandwidth product
of 5MHz. With excellent specifications such as offset
voltage of 5FV (max), drift of 20nV/NC (max), and
117nV_P-P noise in 0.1Hz to 10Hz, the IC is ideally
suited for applications requiring ultra-low noise, and DC
precision such as interfacing with pressure sensors,
strain gauges, precision weight scales, and medical
instrumentation.
The IC is available in 8-pin FMAXM or SO packages and
is rated over the -40NC to +125NC temperature range.
Applications
Transducer Amplifiers
Load Cell Amplifiers
Precision
Instrumentation
Battery-Powered
Equipment
PLC Analog I/O
Modules
Features
S 2.7V to 36V Power-Supply Range
S Ultra-Low Input V_OS: 5µV (max)
S Low 20nV/°C (max) of Offset Drift
S Low 9nV/√Hz noise at 1kHz
S 1µs Fast Settling Time
S 5MHz Gain-Bandwidth Product
S Rail-to-Rail Output
S Integrated EMI Filter
S Low 0.55mA Per Channel (max) Quiescent Current
S 8-Pin µMAX/SO Package
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maximintegrated.com/MAX44246.related.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
15V
3.3V
MAX44246
BUFFER
R
15V
-15V
50RG
R
15V
R1
3V _VOUT
MAX6126
VDD
RG
50RG
BUFFER
R
VDD VREF
VIN+
MAX11211 _OUTPUT
MICRO-
PROCESSOR
15V
-15V
R
MAX44246
VIN-
VSS
BUFFER
1.5V
C1
MAX44246
-15V
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-6375; Rev 3; 5/13