MAX44246:36V, Low-Noise, Precision, Single/Quad/Dual Op Amps

Precision, Low-Noise Performance in High-Voltage Applications

The MAX44241/MAX44243/MAX44246 are 36V, ultra- precision, low-noise, low-drift, single/quad/dual opera- tional amplifiers that offer near-zero DC offset and drift through the use of patented chopper stabilized and auto-zeroing techniques. This method constantly mea- sures and compensates the input offset, eliminating drift over time and temperature and the effect of 1/f noise. These single/quad/dual devices feature rail-to-rail out- puts, operate from a single 2.7V to 36V supply or dual ±1.35V to ±18V supplies, and consume only 0.42mA per channel, with only 9nV/√Hz input-referred voltage noise. The ICs are available in 8-pin µMAX® or SO packages and are rated over the -40°C to +125°C temperature range.

Key Features
  • Reduces Noise-Sensitive Precision Applications
    • Low 9nV/√Hz Noise at 1kHz
    • Integrated EMI Filter
  • Eliminates Cost of Calibration with Increased Accuracy and Patented Auto-Zero Circuitry
    • Ultra-Low Input VOS: 5µV (max)
    • Low 20nV/°C (max) of Offset Drift
  • Suitable for High-Bandwidth Applications
    • 1µs Fast Settling Time
    • 5MHz Gain-Bandwidth Product
  • Low 0.55mA Per Channel (max) Quiescent Current
  • Wide Supply for High-Voltage Front-Ends
    • 2.7V to 36V Supply Range
  • Rail-to-Rail Output
MAX44246: Typical Operating Circuit
MAX44246: Typical Operating Circuit
  • Battery-Powered Equipment
  • Load Cell Amplifiers
  • PLC Analog I/O Modules
  • Precision Instrumentation
  • Transducer Amplifiers
titleDownload file
MAX44241-MAX44246 Data SheetMAX44241-MAX44246.pdf
Part NumberAmps.Rail to RailVSUPPLY (Total)
ICC per Amp.
Low Input Bias CMOS InputsInput IBIAS
Unity Gain BW
Slew Rate
minmaxtypmaxtyptypmaxtyptyp<See Notes
MAX442411Output Only2.7364205158166Yes0.653.89µMAX/8
$1.24 @1k
$3.53 @1k
$1.56 @1k
Design kits & evaluation modules
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX44246ASA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX44246ASA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +125°CLead Free
MAX44246AUA+ActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX44246AUA+TActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX44241-MAX44246.pdf MAX44246
MAX44241-MAX44246_cn.pdf MAX44246
Passive Components Aren’t Really So Passive (Part 3): Printed Circuit Boards MAX44280
DC Error Characteristics of an Op Amp and the Effect on High-Precision Applications MAX44260
Passive Components Aren’t Really So Passive (Part 2): Resistors MAX44280
MAX44246_cn.pdf MAX44243