HMC832 Datasheet, PDF (1/49 Pages) Analog Devices – Cellular infrastructure

Data Sheet
Fractional-N PLL with Integrated VCO
25 MHz to 3000 MHz
HMC832
FEATURES
RF bandwidth:
25 MHz to 3000 MHz
3.3 V supply
Maximum phase detector rate: 100 MHz
Ultralow phase noise
−110 dBc/Hz in band, typical
Fractional figure of merit (FOM): −226 dBc/Hz
24-bit step size, resolution 3 Hz typical
Exact frequency mode with 0 Hz frequency error
Fast frequency hopping
40-lead 6 mm × 6 mm SMT package: 36 mm²
APPLICATIONS
Cellular infrastructure
Microwave radio
WiMax, WiFi
Communications test equipment
CATV equipment
DDS replacement
Military
Tunable reference source for spurious-free performance
GENERAL DESCRIPTION
The HMC832 is a 3.3 V, high performance, wideband, frac-
tional-N, phase-locked loop (PLL) that features an integrated
voltage controlled oscillator (VCO) with a fundamental
frequency of 1500 MHz to 3000 MHz, and an integrated VCO
output divider (divide by 1/2/4/6/…60/62), that enables the
HMC832 to generate continuous frequencies from 25 MHz to
3000 MHz. The integrated phase detector (PD) and delta-sigma
(Δ-Σ) modulator, capable of operating at up to 100 MHz, permit
wider loop bandwidths and faster frequency tuning with
excellent spectral performance.
Industry leading phase noise and spurious performance, across
all frequencies, enable the HMC832 to minimize blocker effects,
and to improve receiver sensitivity and transmitter spectral
purity. A low noise floor (−160 dBc/Hz) eliminates any contri-
bution to modulator/mixer noise floor in transmitter applications.
FUNCTIONAL BLOCK DIAGRAM
LD/SDO SCK SDI
HMC832
LOCK
DETECT
CONTROL
MODULATOR CAL
SPI
PROGRAMMING
INTERFACE
EN
SEN
RF_P
EN
÷1, 2, 4, 6, ...62
RF_N
÷N
CP
CP
PFD
÷R
VCO
VTUNE
XREFP
Figure 1.
The HMC832 is footprint-compatible to the market leading
HMC830 PLL with integrated VCO. It features 3.3 V supply and
an innovative programmable performance technology that enables
the HMC832 to tailor current consumption and corresponding
noise floor performance to individual applications by selecting
either a low current consumption mode or a high performance
mode for an improved noise floor performance.
Additional features of the HMC832 include 12 dB of RF output
gain control in 1 dB steps; output mute function to automatically
mute the output during frequency changes when the device is
not locked; selectable output return loss; programmable
differential or single-ended outputs, with the ability to select
either output in single-ended mode; and a Δ-Σ modulator exact
frequency mode that enables users to generate output frequencies
with 0 Hz frequency error.
Rev. A
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