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New range of miniature surface mount temperature compensated oscillators

Frequency control specialist, Euroquartz has launched a range of miniature surface mount temperature-compensated crystal oscillators (TCXO) offering very low current consumption in real time clock applications.

The EME32T series offers frequency of 32.768kHz for real time clock applications in a 3.28 x 2.5 x 1.3mm miniature SMD 4-pad package with selection of supply voltage encompassing 1.8, 2.5, 3.0, 3.3 and 5.0V options.

Very low current consumption – as little as 0.79µA at 1.8V – is a major advantage in battery-controlled applications while frequency stability is just ±5ppm over temperature range from -40 to +85°C.

Frequency stability versus voltage change is ±0.2ppm for a ±5% input voltage change, while frequency stability against ageing is ±3.0ppm maximum for first year.

Additional specifications include initial calibration tolerance of ±1.5ppm at 25°C ±2%, timing error over time of 2.628m/year, CMOS output logic with load of 15pF, 100ns maximum rise and fall time and duty cycle of 50% ±10%. Start-up time is 1s maximum at 25°C (3s maximum over operating temperature range).

Neil Tyler

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