Date: 5th Jun 2011
PLL with Integrated VCO can generate an
RF frequency between 35 MHz to 4400 MHz
Analog Devices, Inc. (ADI) has introduced a new PLL (phase-locked
loop) synthesizer for wireless communication systems. The
ADF4351 PLL allows implementation of fractional-N or integer-N
operation continuously over an ultra-wide frequency range
of 35 MHz to 4400 MHz with less phase-noise. The ADF4351
has on-chip VCO (voltage-controlled oscillator) and supports
dual output ports.
The ADF4351 PLL features programmable divide-by-1/2/4/8/16/32/64
circuits, which allow the user to generate an RF output
frequency anywhere between 35 MHz and 4400 MHz, so that
designer is saved from designing multiple synthesizers for
different bands, which speeds design cycle times and reduces
component costs. For applications that require isolation,
the RF output stage can be muted. The mute function is both
pin- and software-controllable. Furthermore, control of
all of the on-chip registers is through a simple 3-wire
interface. The ADF4351 PLL operates with a power supply
ranging from 3.0 V to 3.6 V and can be powered down when
not in use.
Key Features:
RMS jitter of 0.3 ps typ; typical EVM of 0.4% at 2.1 GHz
Programmable dual-modulus prescaler of 4/5 or 8/9; programmable
output power level, dual output ports, integer-N or fractional-N
operation
Programmable dual-modulus prescaler of 4/5 or 8/9; programmable
output power level, dual output ports, integer-N or fractional-N
operation
Switched bandwidth fast-lock mode
Cycle slip reduction
Product |
Price Each in
1,000-unit Quantities |
Availability |
Package
(MSPS) |
ADF4351 |
$11.13 |
Sampling now; volume
production in the fall |
32-lead LFCSP |
For more information, visit: http://www.analog.com/rf.
|