HMC983LP5E Datasheet, PDF (1/32 Pages) Hittite Microwave Corporation – DC - 7 GHZ FRACTIONAL-N DIVIDER AND FREQUENCY SWEEPER

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HMC983LP5E
DC - 7 GHZ FRACTIONAL-N DIVIDER
AND FREQUENCY SWEEPER
Typical Applications
Features (Continued)
The HMC983LP5E is suitable for:
Integrated Frequency Sweeper
• Test Equipment
• Portable Instruments
- Linear, Coherent Sweeps
- 2-Way, 1-Way, & User Defined Sweep Modes
- Automatic or Triggered
• High Performance Fractional-N Frequency Synthe-
sizers with Ultra Low Spurious
• Stand-Alone Divider and/or Delta-Sigma Modulator
- Programmable Seed
-SPI & External Triggering
5-GPIO’s, can be used for External DSM
Cycle Slip Prevention Support with PFD Chip
Features
(HMC984LP4E)
Wideband: DC - 7 GHz Input
Differential VCO Input & Divider Output
-20-bit Frequency Divider
Programmable Output Current Control:
Low Noise: -160 dBc/Hz
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Low Spurious: Largest Spurious - 95 dBc
-5 mA to 17.5 mA Open Collector Output Driver
32 pin, 5 x 5 mm, LP5 Package
48-bit 100 MHz Delta-Sigma Modulator (DSM)
- Configurable DSM Size
- Programmable Seed
Functional Diagram
General Description
HMC983LP5E is a fractional frequency divider
targeted for fractional-N frequency synthesis, and
stand-alone low noise frequency divider applications
that require exceptional spurious performance.
Although the HMC983LP5E can work with any VCO
and/or compatible Phase Detector, best performance
and features will be achieved when paired with the
companion part, the HMC984LP4E.
Fabricated in SiGe BiCMOS process, the
HMC983LP5E features a 48-bit Delta Sigma
Fractional Modulator (DSM) with programmable
phase accumulator size, enabling precise control of
frequency step size and resolution. Integrated DSM
can generate frequencies with nearly 0 Hz frequency
error. The DSM also includes a built-in programmable
frequency sweep capability, with various automatic
and user defined sweep modes and triggering options,
including hardware trigger pin, or SPI trigger with
optional delayed trigger.
HMC983LP5E is a versatile part capable of various
configurations. It has 5 general purpose I/Os (GPIOs).
DSM outputs are made available from the GPIO port,
enabling the HMC983LP5E to import and/or export
DSM sequences for various configuration options.
HMC983LP5E divider outputs are differential, open
collector with programmable current to accommodate
different off-chip loads.
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For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel • 978-250-3373 fax • Order On-line at www.hittite.com
Application Support: [e-mail]