QTM216E-40.000MDM-T

Overview

The QTM216E-40.000MDM-T is a low EMI CMOS crystal oscillator manufactured by QST, designed for compact surface-mount applications. It operates at a fixed frequency of 40 MHz with a frequency stability of ±50 ppm. The device supports a supply voltage range including 1.8V and functions within an industrial temperature range of -40°C to +125°C. Housed in a 2.00mm x 1.60mm SMD package with a maximum height of 0.76mm, it integrates phase modulation capabilities to reduce electromagnetic interference. This component is suitable for high-density designs requiring precise clocking with minimal spectral radiation.

Feature Summary

• Integrates phase modulation functionality to spread clock spectrum and reduce EMI peaks without external filtering components
• Features a dedicated control pin (Pin1) that enables or disables the low EMI mode via logic level input
• Utilizes a compact 2.01.6mm ceramic SMD package suitable for space-constrained mobile and industrial devices
• Supports wide operating voltage options including 1.8V, accommodating low-power system architectures

Applications

• High-definition video transmission systems requiring precise clock synchronization
• Compact mobile devices and wearable electronics with strict PCB area limitations
• Industrial control systems operating in extended temperature environments
• Embedded interfaces such as MIPI and LVDS where signal integrity is critical

Procurement Notes

Verify the specific suffix 'MDM' against official QST documentation to confirm the exact voltage and temperature grade, as ordering codes define functional parameters. Ensure Pin1 handling matches the required EMI mode configuration during assembly. Cross-reference the manufacturer part number directly with the datasheet to avoid confusion with similar series variants. Confirm RoHS compliance status through the latest product release notes provided by the supplier.

Selection Notes

Select this component when design constraints require a sub-1mm height profile combined with active EMI reduction features. The ±50 ppm stability meets standard digital interface requirements, while the 1.8V operation supports energy-efficient platforms. Consider the GPIO-controlled phase modulation if EMC testing margins are tight, allowing software-based tuning without hardware redesign. Evaluate the -40°C to +125°C range against the target application's environmental exposure to ensure long-term reliability under thermal stress.

Part Context

The QTM216E series represents QST's portfolio of ultra-low profile oscillators engineered for modern miniaturized electronics. Unlike traditional crystals, these devices embed oscillator circuits and EMI suppression techniques within a single ceramic package. The 2016 footprint allows direct replacement of larger legacy components, facilitating board size reductions in smartphones, tablets, and IoT sensors while maintaining signal quality standards.

Replacement Considerations

Publicly confirmed substitute part numbers include QTM216E-38.400MDM-T and QTM216E-25.000MDM-T from the same family. These alternatives share identical packaging and functional characteristics but differ in output frequency. Verify that the alternative frequency aligns with the system clock requirements before substitution.