Dual Diode Packages conserve board space.

Press Release Summary:

ZMDC831BTA and ZMDC832BTA dual common cathode hyperabrupt varactor diodes fit in single SOT323 package. Matched devices have 15 and 22 pF capacitance, respectively, at reverse bias voltage of 2 V. C2/C20 capacitance ratio is 4.5 to 6 and 5 to 6.5, respectively, and reverse leakage current is typically as low as 200 pA. Typical applications include voltage controlled and crystal oscillators, frequency synthesizers, and tuned phase lock loop tank circuits.

Original Press Release:

Dual Varactor Diodes Provide Close Matching and Board Area Reduction

Hauppauge, New York... For applications requiring close tuner diode matching, Zetex has expanded its range of dual common cathode hyperabrupt varactor diodes. Two additional devices, the ZMDC831BTA and ZMDC832BTA, offer high tolerance C-V characteristics, inherent matching, high Q, low leakage and low phase noise performance.

Nominal capacitances (C2) for the '831B and '832B are 15pF and 22pF respectively at a reverse bias voltage of 2V. The C2/C20 capacitance ratio is 4.5 to 6 and 5 to 6.5 respectively, and reverse leakage current is typically as low as 200pA.

By providing two devices in a single miniature package, board area can be reduced significantly. For example, one ZMIDC83x part, employing the SOT323 package, occupies only 1/3 the board area required for two SOT23 packaged parts.

Typical applications for the ZMDC dual varactors include voltage controlled and crystal oscillators (VCO and VXCO), frequency synthesizers and tuned phase lock loop tank circuits.

The 1,000 piece price is $0.30 each. Delivery is quoted at 4-6 weeks in production volumes.

For further information and reader inquiries:

Neil Chadderton, Zetex Inc., 700 Veterans Memorial Highway, Hauppauge, NY 11788

Tel: 631-360-2222

Fax; 631-360-8222

E-mail: nchadderton@zetex.com

Web: www.zetex.com

Zetex designs and manufactures high performance semiconductor solutions for analog signal processing and the management of power in automotive, communications, consumer and industrial electronics.

Meeting the demand for greater power economy, precision and speed in analog circuit design, the broad Zetex product range comprises application specific linear ICs and discrete semiconductor devices in multiple package configurations.

As a specialist in analog technology, Zetex offers a diverse series of ICs that includes audio and video amplifiers and dc-dc converters. Its discrete component range features trench MOSFETs, bipolar transistors and diodes.

Headquartered near Manchester in the UK, Zetex has manufacturing and sales operations in Asia, Europe and the USA, and is supported by distributors in more than 45 countries (www.zetex.com/salesnetwork). The company is a wholly owned subsidiary of Telemetrix plc.

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