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High-Voltage, Precision, Low-Power Op Amps

Excellent Combination of Low Power and Precision in a Small Package

Product Details

Key Features

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 2.4
Input IBIAS (nA) (max) 90
VOS (µV) (max) 100
VSUPPLY (Total) (V) (min) 6
VSUPPLY (Total) (V) (max) 38
# Amplifiers 1
Rail to Rail Output Only
Package/Pins TDFN/6
UMAX/8
Budgetary
Price (See Notes)
1.15
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Simplified Block Diagram

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Parameters

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 2.4
Input IBIAS (nA) (max) 90
VOS (µV) (max) 100
VSUPPLY (Total) (V) (min) 6
VSUPPLY (Total) (V) (max) 38
# Amplifiers 1
Rail to Rail Output Only
Package/Pins TDFN/6
UMAX/8
Budgetary
Price (See Notes)
1.15

Key Features

  • Wide 6V to 38V Supply Range
  • Low 100µV (max) Input Offset Voltage
  • Low 0.4µV/°C Offset Drift
  • Unity Gain Stable with 1nF Load Capacitance
  • 2.4MHz Gain-Bandwidth Product
  • 550µA Supply Current
  • 20mA Output Current
  • Rail-to-Rail Output
  • Package Options
    • 3mm x 5mm, 8-Pin µMAX or 3mm x 3mm, 6-Pin TDFN Packages (Single)
    • 5mm x 6mm, 8-Pin SO or 3mm x 3mm, 8-Pin TDFN Packages (Dual)

Applications/Uses

  • Amplifiers
  • Automatic Test Equipment (ATE)
  • Displays: Industrial, Front Panel, and Instrumentation
  • High-Performance ADC/DAC Input/Output
  • High-Voltage ATE
  • Industrial Instrumentation
  • Industrial: Process Measurement and Control
  • Loop-Powered Systems
  • Panel Meters
  • Power Meters
  • Programmable Logic Controllers (PLCs)
  • Sensor Interfaces

Description

The MAX9943/MAX9944 is a family of high-voltage amplifiers that offers precision, low drift, and low power consumption.

The MAX9943 (single) and MAX9944 (dual) op amps offer 2.4MHz of gain-bandwidth product with only 550µA of supply current per amplifier.

The MAX9943/MAX9944 family has a wide power supply range operating from ±3V to ±19V dual supplies or a 6V to 38V single supply.

The MAX9943/MAX9944 are ideal for sensor signal conditioning, high-performance industrial instrumentation and loop-powered systems (e.g., 4mA–20mA transmitters).

The MAX9943 is offered in a space-saving 6-pin TDFN or 8-pin µMAX® package. The MAX9944 is offered in an 8-pin SO or an 8-pin TDFN package. These devices are specified over the -40°C to +125°C automotive temperature range.

Simplified Block Diagram

MAX9943, MAX9944: Typical ±20mA Current-Source in Loop-Powered Systems MAX9943, MAX9944: Typical ±20mA Current-Source in Loop-Powered Systems Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .