Analog Devices Inc./Maxim Integrated MAX9502GELT+

Overview

MAX9502GELT+ from Maxim Integrated is a +6dB fixed-gain, 2.5V–3.6V single-supply video amplifier with integrated 4th-order Chebyshev reconstruction filter, DC-coupled I/O, and active-low shutdown. It delivers 2.1V_P-P into 150Ω at 3.0V supply, maintains 110mV sync-tip level, and achieves 55dB attenuation at 27MHz - optimized for composite video signal conditioning in portable imaging systems.

For engineers reviewing the MAX9502GELT+ datasheet, MAX9502GELT+ pinout, MAX9502GELT+ application, or MAX9502GELT+ equivalent, key selection criteria include its 6-pin μDFN (1mm × 1.5mm) footprint, -40°C to +85°C temperature rating, 5.5MHz passband flatness, 0.01μA shutdown current, and compatibility with current-output video DACs driving 75Ω transmission lines.

Technical Context

The MAX9502GELT+ implements a monolithic BiCMOS architecture integrating a 4-pole Chebyshev lowpass filter (5.5MHz passband, 3dB attenuation at 8MHz) and a rail-to-rail output buffer. Its DC-coupled input accepts 0–1.2V composite video signals directly from single-supply DACs, while the output stage level-shifts the sync tip to 110mV (typ) and sources up to 95mA short-circuit current with automatic pulsed protection.

It operates with 5.3mA quiescent current at 2.5V–3.6V supply and features 50–90dB DC PSRR and 56dB AC PSRR at 100kHz. The active-low SHDN pin reduces supply current to 0.01μA, and the device supports NTSC/PAL signal fidelity with ≤0.4% differential gain error and ≤0.4° differential phase error.

Key Specifications

Pinout & Package

MAX9502GELT+ uses a lead-free 6-pin μDFN package (1.0mm × 1.5mm × 0.8mm, 0.5mm pitch), optimized for space-constrained portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video amplifier applications.

Compared with MAX9502GAALT+, MAX9502GELT+ trades extended temperature capability for lower cost and standard industrial qualification; compared with MAX9504GELT+, it removes offset adjust flexibility to reduce pin count and simplify layout - making it optimal for cost-sensitive, fixed-offset portable video designs.

Availability

MAX9502GELT+ is available at Aetrix Electronics and suitable for mobile phones, digital still cameras, and portable video recorders requiring stable component supply, consistent lead-free packaging, and guaranteed -40°C to +85°C performance.

Supply support for MAX9502GELT+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX9502 product line delivers compact, low-power video signal conditioning solutions targeting portable imaging and display interfaces - emphasizing minimal board area, DC-coupled simplicity, and broadcast-grade video fidelity.

FAQ

What is the maximum output voltage swing of the MAX9502GELT+ into a 150Ω load?

The MAX9502GELT+ delivers 2.1V_P-P (typ) into a 150Ω load at 3.0V supply, with guaranteed 1.97V_P-P minimum. At 2.5V supply, output swing is 2.1V_P-P (typ) with 1.97V_P-P minimum. This performance assumes DC-coupled output and proper 75Ω back-termination - critical for maintaining signal integrity in composite video applications using the MAX9502GELT+.

Does the MAX9502GELT+ require external passive components for basic operation?

No, the MAX9502GELT+ requires only a single 0.1μF VCC bypass capacitor for stable operation. Its integrated 4th-order Chebyshev filter and DC-coupled I/O eliminate external reconstruction filters, coupling capacitors, and level-shift networks - enabling a complete video amplifier solution in just two components (including the bypass cap). This simplifies layout and improves reliability in space-constrained designs using the MAX9502GELT+.

How does the shutdown function operate on the MAX9502GELT+?

The MAX9502GELT+ features an active-low SHDN pin: pulling it to GND reduces supply current to 0.01μA, disabling the amplifier and filter while maintaining high-impedance output. When released (open or pulled high), the device enables within 800ns (t_ON). The pin accepts logic-high ≥2.0V and logic-low ≤0.8V at +25°C - ensuring robust interfacing with 1.8V/3.3V GPIOs in systems using the MAX9502GELT+.

Can the MAX9502GELT+ drive a standard 75Ω video cable directly?

Yes, the MAX9502GELT+ is designed for 75Ω cable drive via series back-termination: a 75Ω resistor is placed between the OUT pin and the cable, with the far end terminated to 75Ω. This configuration halves signal amplitude but preserves DC level - the MAX9502GELT+'s 110mV sync-tip offset compensates for this, ensuring correct DC restoration at the receiver. No AC coupling or transformer is needed in this standard setup for the MAX9502GELT+.

What video standards does the MAX9502GELT+ support with guaranteed performance?

The MAX9502GELT+ guarantees ≤0.4% differential gain error and ≤0.4° differential phase error for both NTSC and PAL composite video signals, meeting broadcast-quality fidelity requirements. Its 5.5MHz passband flatness (±1dB), 3dB attenuation at 8MHz, and 55dB suppression at 27MHz align precisely with NTSC/PAL spectral masks - making it validated for use in certified consumer video equipment where the MAX9502GELT+ is deployed.