MAX4145ESD+T

Overview

The MAX4145ESD+T is a high-speed, low-distortion differential line receiver manufactured by Analog Devices Inc./Maxim Integrated. It utilizes a three op-amp instrumentation amplifier architecture with fully symmetrical differential inputs and a single-ended output. The device operates from ±4.5V to ±5.5V power supplies and features an external gain-setting resistor allowing closed-loop gains from +1V/V to +10V/V. Key electrical specifications include a -3dB bandwidth of 180MHz at unity gain, a slew rate of 600V/µs, and a common-mode rejection ratio of 75dB at 10MHz. It provides a quiescent supply current of 16mA and includes a shutdown mode drawing 2mA maximum.

Feature Summary

• Three op-amp instrumentation amplifier architecture for high common-mode rejection
• External resistor allows flexible closed-loop gain selection between +1V/V and +10V/V
• Integrated shutdown capability for low-power standby operation
• Internal input protection circuitry against large differential voltages

Applications

• Differential to Single-Ended Conversion
• Twisted-Pair to Coaxial Converter
• High-Speed Instrumentation Amplifier
• Data Acquisition Systems
• Medical Instrumentation

Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm the specific suffix matches the required package and temperature range. Ensure the ordering information aligns with the latest datasheet revisions to avoid discrepancies in pin configurations or electrical characteristics during procurement.

Selection Notes

Select this model when a high-bandwidth differential receiver with variable gain is required. The MAX4145 is distinct from the fixed-gain MAX4144 and the high-gain MAX4146. Consider the 180MHz bandwidth and 600V/µs slew rate for fast signal processing. Ensure the application supports dual ±5V power supplies and requires a 14-pin SOIC package.

Part Context

This component belongs to the MAX4144/MAX4145/MAX4146 family of high-speed differential line receivers. While sharing similar architectures and performance metrics, the MAX4145 is specifically optimized for mid-range gain applications (+1V/V to +10V/V). It complements the MAX4147 differential line driver to form complete transmission links.

Replacement Considerations

The MAX4144ESD and MAX4146ESD are pin-compatible members of the same family but feature different internal gain settings. Direct substitution requires verifying that the fixed gain of the alternative part meets the circuit requirements without modification.