Surface-mount TCXOs have power-saving sleep mode
These ultra-small temperature-compensated crystal oscillators are
contained in a 32-pin leadless ceramic chip carrier package only 0.450 (L)
x 0.550 (W) x 0.141 (H) in. They are claimed to be the smallest completely
integrated CMOS TCXOs available. The oscillators, designated the NTC-1000
Series, are available over a range of 2.1 to 20 MHz. They provide either a
square-wave or a sine-wave output. A programmable sleep mode allows the
user to disable the output signal for reduced current drain. While in this
mode, the oscillator and its compensation circuits remain operational to
maintain frequency stability. Frequency adjustment is provided by a serial
peripheral interface or by an optional dc voltage frequency adjustment.
($18.55 ea/1,000–8 to 10 weeks ARO.) NEL Frequency Controls, Inc.
Burlington, WI Chuck Ulland 414-763-3591 Fax 414-763-2881
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