1
FN2809.8
HSP45106
16-Bit Numerically Controlled Oscillator
The Intersil HSP45106 is a high performance 16-bit
quadrature Numerically Controlled Oscillator (NCO16). The
NCO16 simplifies applications requiring frequency and
phase agility such as frequency-hopped modems, PSK
modems, spread spectrum communications, and precision
signal generators. As shown in the block diagram, the
HSP45106 is divided into a Phase/Frequency Control
Section (PFCS) and a Sine/Cosine Section.
The inputs to the Phase/Frequency Control Section consist
of a microprocessor interface and individual control lines.
The frequency resolution is 32 bits, which provides for
resolution of better than 0.008Hz at 33MHz. User
programmable center frequency and offset frequency
registers give the user the capability to perform phase
coherent switching between two sinusoids of different
frequencies. Further, a programmable phase control register
allows for phase control of better than 0.006°. In applications
requiring up to 8-level PSK, three discrete inputs are
provided to simplify implementation.
The output of the PFCS is a 28-bit phase which is input to
the Sine/Cosine Section for conversion into sinusoidal
amplitude. The outputs of the Sine/Cosine Section are two
16-bit quadrature signals. The spurious free dynamic range
of this complex vector is greater than 90dBc.
For added flexibility when using the NCO16 in conjunction
with DACs, a choice of either parallel or serial outputs with
either two’s complement or offset binary encoding is
provided. In addition, a synchronization signal is available
which indicates serial word boundaries.
Features
25.6MHz, 33MHz Versions
32-Bit Center and Offset Frequency Control
16-Bit Phase Control
8-Level PSK Supported Through Three Pin Interface
Simultaneous 16-Bit Sine and Cosine Outputs
Output in Two’s Complement or Offset Binary
<0.008Hz Tuning Resolution at 33MHz
Serial or Parallel Outputs
Spurious Frequency Components <-90dBc
16-Bit Microprocessor Compatible Control Interface
Pb-Free available (RoHS compliant)
Applications
Direct Digital Synthesis
Quadrature Signal Generation
Spread Spectrum Communications
PSK Modems
Modulation - FM, FSK, PSK (BPSK, QPSK, 8PSK)
Frequency Hopping Communications
Precision Signal Generation
Related Products
- Use with Data Acquisition Parts HI5731 or HI5741
Ordering Information
PART
NUMBER
PART
MARKING
TEMP. RANGE
(°C)
PACKAGE
PKG.
DWG. #
HSP45106JC-25
0 to +70
84 Ld PLCC
N84.1.15
HSP45106JC-25Z
(Note)
HSP45106JC-25Z
0 to +70
84 Ld PLCC
(Pb-free)
N84.1.15
HSP45106JC-33
0 to +70
84 Ld PLCC
N84.1.15
HSP45106JC-33Z
(Note)
HSP45106JC-33Z
0 to +70
84 Ld PLCC
(Pb-free
N84.1.15
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100%
matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Data Sheet
October 16, 2008
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2000, 2004, 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.