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AST3TQ-T-25.000MHZ-28

AST3TQ-T-25.000MHZ-28

Abracon LLC
25 MHz TCXO LVCMOS Oscillator 3.3V 4-SMD, No Lead
Active538 in stock

Overview

The AST3TQ-T-25.000MHZ-28 is a precision Temperature Compensated Crystal Oscillator (TCXO) from Abracon designed for high-stability timing applications. It provides a 25 MHz LVCMOS output with a tight frequency stability of +/-280ppb across a wide industrial temperature range of -40C to +85C. This surface-mount component is housed in a standard 7.00mm x 5.00mm 4-SMD package and operates on a 3.3V supply.

Why Choose This Part

This TCXO offers superior frequency stability of +/-280ppb, making it significantly more accurate than standard clock oscillators. The 3.3V LVCMOS output ensures easy integration with modern FPGAs and MCUs, while the low current consumption of approximately 6mA suits power-sensitive designs.

Applications

Network Switches and Routers
Provides the primary reference clock for Ethernet PHYs and switching fabric requiring low jitter and high frequency stability.
Wireless Base Stations
Serves as a stable local oscillator for cellular infrastructure where precise synchronization is critical for spectral efficiency.
Industrial Automation Gateways
Ensures reliable timing for industrial communication protocols over extended temperature ranges in factory environments.
Precision Instrumentation
Acts as a high-accuracy timebase for measurement equipment where standard crystal oscillators lack the required thermal stability.

Key Specifications

Type TCXO
Output LVCMOS
Frequency 25 MHz
Mounting Type Surface Mount
Base Resonator Crystal
Package / Case 4-SMD, No Lead
Size / Dimension 0.276" L x 0.197" W (7.00mm x 5.00mm)
Voltage - Supply 3.3V
Frequency Stability +/-280ppb
Height - Seated (Max) 0.079" (2.00mm)
Operating Temperature -40degC ~ 85degC
Current - Supply (Max) 7mA

Getting Started

To integrate this component, ensure the 3.3V supply is well-decoupled with a 0.1uF ceramic capacitor placed as close to the VDD pin as possible. The 4-SMD footprint requires standard reflow soldering profiles; refer to the Abracon datasheet for the specific thermal ramp-up rates to avoid damaging the internal resonator.

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