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Electronics Manufacturing & Production Handbook 2019


 

Clock generators
21 March 2012, Analogue, Mixed Signal, LSI

Hittite has launched two new SMT packaged clock generators, the HMC1032LP6GE and the HMC1034LP6GE. They are targeted at a wide range of high-performance cellular/4G infrastructure, fibre-optic and networking applications.

The devices offer programmable frequency synthesis from 125 MHz to 3 GHz in both integer- and fractional-N relationships to their reference clocks. The HMC1032LP6GE is ideal for clocking DSP, FPGA and high-performance processors, and operates from 125 MHz to 350 MHz, while the HMC1034LP6GE is designed to meet the stringent requirements of high-speed data converters and physical layer devices (PHY), and operates from 125 MHz to 3 GHz.

Both ICs integrate high-accuracy PLL and VCO circuits and an advanced delta-sigma modulator with 24-bit step range that enables frequency resolution of 3 Hz and below. The serial programming interface (SPI), together with Hittite’s easy-


to-use configuration software, allows for programming frequencies rapidly. A proprietary ‘exact frequency mode’ of operation reduces frequency errors in fractional-N synthesis mode while maintaining the excellent noise and spur performance of the device.

The HMC1034LP6GE clock generator achieves phase jitter performance of 78 fs RMS typical (12 kHz to 20 MHz integration bandwidth) when operating at 800 MHz, and offers desirable link level jitter performance, interface bit-error-rates (BER ) and eye diagram metrics. The device is ideal for low-noise clock multiplication in networking, data centre and storage applications.

The HMC1032LP6GE and the HMC1034LP6GE may be used to generate the sample clocks for high-speed data converters (ADCs and DACs) in cellular infrastructure and fibre-optic applications. With a phase noise floor of less than


-165 dBc/Hz, they improve the SNR (signal-to-noise ratio) performance of data converters by providing very clean sample and device clocks. Both devices provide an AC coupled, differential clock pair with 2-bit adjustable output amplitude, and an output mute function, which may be set via the SPI interface.

The ICs are each assembled in 6 x 6 mm plastic leadless surface mount packages, and support operation over the -40°C to +85°C temperature range. Evaluation kits with easy-to-use USB programming capability, and GUI-based programming software to set the desired register configuration, are available.

For more information contact Andrew Hutton, RF Design, +27 (0)21 555 8400, sales@rfdesign.co.za, www.rfdesign.co.za


Credit(s)
Supplied By: RF Design
Tel: +27 21 555 8400
Fax: 086 653 2139
Email: sales@rfdesign.co.za
www: www.rfdesign.co.za
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