LTC2990 Replacement: GX1990 Pin-to-Pin Hardware and Software Compatible Alternative

For engineers and manufacturers currently using LTC2990, replacing a monitoring IC with a different device can involve PCB redesign, software modification, additional verification and increased engineering costs.

GXSC developed GX1990 as a direct alternative to LTC2990 for voltage, current and temperature monitoring applications. GX1990 provides pin-to-pin hardware compatibility and software compatibility with LTC2990, allowing existing LTC2990-based designs to migrate to GX1990 without changing the PCB layout or existing control software.

GX1990 is also suitable for new product development and new board-level monitoring designs. Whether the project requires a compatible replacement for an existing LTC2990 design or a monitoring IC for a newly developed system, GX1990 provides a flexible solution for voltage, current and temperature measurement.
GX1990 as a Direct LTC2990 Replacement and a Choice for New Designs

For existing LTC2990-based products, GX1990 provides a direct migration path while retaining the original hardware and software architecture.

The device supports voltage, current and temperature monitoring and operates from a 2.9V to 5.5V supply. Its compatibility allows engineers to retain existing PCB layouts and control software when replacing LTC2990.

For new designs, GX1990 can also be integrated directly into board-level monitoring systems requiring voltage, current and temperature measurement, making it suitable for both existing products and new development projects.
Pin-to-Pin Hardware and Software Compatibility with LTC2990

Compatibility is one of the key considerations when replacing an IC in an existing design.

GX1990 is pin-to-pin compatible with LTC2990 and is available in the same 10-pin MSOP package, allowing existing PCB layouts to be retained without redesign.

GX1990 also provides software compatibility with LTC2990-based applications. Existing systems can therefore migrate to GX1990 without modification to the original control software.

This compatibility helps reduce engineering effort, PCB redesign costs and verification time, especially for products already in development or mass production.

GX1990 vs LTC2990: Key Specification Comparison

The following comparison highlights key specifications for engineers evaluating GX1990 in LTC2990-based applications.

GX1990 is designed to provide compatibility with existing LTC2990-based systems while also offering a monitoring solution for new product development.
Voltage, Current and Temperature Monitoring Performance

GX1990 supports both single-ended and differential measurement configurations for board-level monitoring applications.

Key GX1990 performance specifications include:

• Single-ended voltage resolution: 305.18 μV
• Differential voltage resolution: 19.075 μV
• Temperature resolution: 0.0625°C
• Voltage measurement accuracy: ≤0.25%
• Current measurement accuracy: ≤0.75%
• Temperature measurement accuracy: ≤1.8°C
• Operating temperature range: -40°C to +125°C
• Internal reference temperature drift: 10 ppm/°C

GX1990 also integrates temperature and voltage sensing functions for monitoring its own operating temperature and supply voltage.

These capabilities make GX1990 suitable for power supply voltage monitoring, current measurement, remote temperature measurement, remote data acquisition, environmental monitoring and other board-level monitoring applications.
Technical Support for Existing and New Designs

For existing LTC2990-based products, GX1990 provides an alternative device option while allowing the original hardware and software architecture to remain unchanged.

For newly developed products, GX1990 can be evaluated as a voltage, current and temperature monitoring IC without being limited to LTC2990 replacement applications.

GXSC provides technical support for device evaluation, compatibility verification and sample testing, supporting customers during both replacement evaluation and new product development.
Request GX1990 Datasheet and Samples

Whether you are replacing LTC2990 in an existing product or evaluating a monitoring IC for a new design, GXSC can provide the GX1990 datasheet, samples and technical support for evaluation and testing.

Contact GXSC to discuss your LTC2990 replacement or new project requirements.