MAX1932ETC/GG8

Overview

The MAX1932ETC/GG8 is an integrated circuit designed to generate a low-noise, high-voltage output for avalanche photodiodes (APDs) in optical receivers. It utilizes a constant frequency pulse-width modulation (PWM) boost topology with a unique structure that incorporates a variable duty cycle control loop. The device operates on a single supply voltage ranging from 2.7V to 5.5V and provides an adjustable output voltage between 4.5V and 90V. It features a surface-mount TQFN-28 package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Generates high-voltage bias for APDs using PWM boost topology
• Integrates variable duty cycle control for stable regulation
• Supports wide input voltage range with single-supply operation

Applications

• Optical receiver circuits requiring APD biasing
• Fiber optic communication systems
• Lidar and ranging applications

Procurement Notes

Verify the specific suffix GG8 against official Analog Devices documentation to confirm pinout and thermal pad configuration. Ensure the component meets the required environmental specifications for your application. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit parts. Check for any recent lifecycle notices or obsolescence warnings directly from the manufacturer.

Selection Notes

Select this component when designing optical front-ends that require precise, low-noise high-voltage generation for APDs. Consider the input voltage range and the maximum output voltage requirements of your specific photodiode. Evaluate the thermal performance within the TQFN-28 package for your PCB layout constraints. Ensure compatibility with the system's power supply architecture.

Part Context

This part belongs to the Maxim Integrated line of power management and signal conditioning ICs, now under Analog Devices. It addresses the specific need for efficient, compact high-voltage generation in optical sensing applications. The integration of the boost converter and control logic reduces external component count compared to discrete solutions.

Replacement Considerations

Consult Analog Devices official substitution guides for verified alternatives. Generic equivalents may not match the specific noise characteristics or control loop dynamics required for APD stability.