High-Voltage, Precision, Low-Power Op Amps

 

Part Number	Replacement	Explanation

Description

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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.

MAX9943, MAX9944: Typical ±20mA Current-Source in Loop-Powered Systems Enlarge+

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