MAX4202ESA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4202ESA is a single-channel ultra-high-speed open-loop buffer from the MAX4200–MAX4205 series, manufactured by Analog Devices Inc./Maxim Integrated. It operates on dual supplies ranging from ±4V to ±5.5V with a quiescent current of 2.2mA per channel. The device features a -3dB bandwidth of 780MHz and a slew rate of 4200V/μs. It includes an integrated 75Ω back-termination resistor for driving 75Ω transmission lines. Key electrical parameters include an input offset voltage of 1mV typical, input bias current of 0.8μA typical, and output drive capability up to ±44mA into a 75Ω load.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrated 75Ω back-termination resistor designed specifically for driving 75Ω coaxial cables
• Ultra-high-speed performance with 780MHz -3dB bandwidth and 4200V/μs slew rate
• Low noise characteristics with 2.1nV/√Hz voltage-noise density and 0.8pA/√Hz current-noise density
• Excellent capacitive-load-driving capability without oscillation

Instrumentation, Op Amps, Buffer Amps Applications

• High-speed analog-to-digital converter (ADC) input buffers
• Digital-transmission line drivers
• Wireless LAN systems
• IF/communications systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package variant against the datasheet selector guide, as the MAX4202 is available in both 8-pin SO and 5-pin SOT23 packages. Confirm RoHS compliance status via the ordering suffix if required. Ensure supply voltages are within the guaranteed ±4V to ±5.5V range during integration. Check for availability constraints as distribution status may vary.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the MAX4202ESA when a single-channel buffer with integrated 75Ω termination is required for high-frequency signal integrity. Compare against MAX4200ESA if no internal termination is needed or MAX4201ESA for 50Ω applications. Consider the MAX4205ESA if a dual-channel solution is preferred. Evaluate board layout requirements for microstrip/stripline techniques to maintain performance above 6GHz.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX4202ESA belongs to the MAX4200–MAX4205 family of ultra-high-speed, low-noise, low-power open-loop buffers. This family utilizes a proprietary architecture to achieve high slew rates and wide bandwidths while consuming minimal power. Unlike voltage-feedback amplifiers, these devices operate without negative feedback, providing nearly constant group delay time across their frequency range.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

MAX4200ESA: Single buffer without internal termination resistors.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the integrated 75Ω resistor affect the output signal amplitude?

The integrated 75Ω output termination resistor forms a voltage divider with the load resistance, decreasing the signal amplitude at the receiving end of the cable by one half.

Can the MAX4202ESA drive large capacitive loads?

Yes, the device is designed to drive any load capacitance without oscillating, although AC performance may be reduced due to the formation of a lowpass filter with the output resistance.