MAX49925ATB/VY+

Instrumentation, Op Amps, Buffer Amps Overview

The MAX49925ATB/VY+ is a bidirectional current-sense amplifier with an input common-mode range of -40V to +76V and extended protection from -42V to +80V. It operates on a supply voltage of +2.7V to +5.5V over a temperature range of -40°C to +125°C. The device features a 300kHz bandwidth, 140dB DC CMRR, and 5μV typical input offset voltage. Gain is programmable via two pins to 10V/V, 20V/V, 50V/V, or 100V/V. It recovers within 500ns from PWM edges exceeding ±500V/µs.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Fast PWM edge recovery capability for high slew rate signals
• High accuracy with low input offset voltage and gain error
• Wide input common-mode range suitable for automotive transients
• Programmable gain selection using external logic inputs

Instrumentation, Op Amps, Buffer Amps Applications

• PWM H-Bridge Motor In-Line/In-Phase/Winding Current Sensing
• Solenoid Current Sensing
• Current Monitoring of Inductive Loads
• Battery Stack Monitors
• Automotive 48V Hybrid and Electric Vehicles (HEV)

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix /VY+ indicates automotive qualification and side-wettable TDFN packaging. Confirm RoHS compliance status as indicated by the plus sign. Ensure the ordering code matches the required tape-and-reel or tray configuration if applicable. Cross-reference the manufacturer's latest datasheet revision for any updates to electrical characteristics or pin configurations before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring bidirectional sensing in high-voltage environments with significant PWM noise. The wide common-mode range supports 48V HEV systems effectively. Consider the programmable gain options to match specific sense resistor values. Verify that the package thermal resistance meets the system's dissipation requirements under maximum load conditions.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX49925 family of current-sense amplifiers designed for robust performance in electric vehicle and industrial motor control applications. The ATB/VY+ variant specifically denotes automotive-grade qualification and a specialized package type. It complements other Maxim Integrated solutions for power management and signal conditioning in complex automotive electronic architectures.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

MAX49925XATB+

Instrumentation, Op Amps, Buffer Amps FAQ

How is the voltage gain configured?

Gain is selected using the GAIN1 and GAIN2 pins, offering four options: 10V/V, 20V/V, 50V/V, and 100V/V.

What is the input protection range?

The device provides extended input protection against reverse-battery and high-voltage spikes from -42V to +80V.