LMH6502MT

Overview

The LMH6502MT is a wideband, low power, linear-in-dB variable gain amplifier manufactured by Texas Instruments. It features a differential input voltage-controlled gain stage followed by a high-speed current feedback operational amplifier capable of driving low impedance loads. The device offers a gain adjustment range exceeding 70dB up to 10MHz with a maximum gain of 40dB. Key electrical parameters include a bandwidth of 130MHz at closed-loop configuration, a typical slew rate of 1800V/µs, and an operating temperature range from -40°C to 85°C. It operates on a single supply voltage between 5V and 12V, consuming approximately 300mW of power.

Feature Summary

• Linear-in-dB gain control suitable for automatic gain control (AGC) circuits
• Differential inputs providing common mode rejection for low-level amplification
• High-speed current feedback output stage capable of driving heavy load currents

Applications

• Automatic Gain Control (AGC) circuits
• Low-level signal amplification requiring common mode rejection
• Wideband signal processing applications

Procurement Notes

Verify the specific suffix 'MT' against the official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with the required operating temperature range and supply voltage constraints. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and availability status prior to procurement.

Selection Notes

Select this component when a wideband variable gain amplifier with linear-in-dB characteristics is required. It is suitable for applications needing high slew rates and the ability to drive low impedance loads directly. Consider the differential input architecture if common mode noise rejection is critical for the signal integrity in the design.

Part Context

The LMH6502 belongs to the LMH series of wideband amplifiers from Texas Instruments. This series focuses on high-speed performance combined with low power consumption. The device integrates a voltage-controlled gain stage with a current feedback op amp, distinguishing it from standard voltage feedback amplifiers by its ability to handle large signals at high frequencies without significant settling time degradation.

Replacement Considerations

Officially documented substitutes include LMH6502MAX/NOPB and LMH6502MA/NOPB. Verify pinout and package compatibility before substitution.