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HSP45116A

Numerically Controlled Oscillator/

Modulator

The Intersil HSP45116A combines a high performance

quadrature numerically controlled oscillator (NCO) and a

high speed 16-bit Complex Multiplier/Accumulator (CMAC)

on a single IC. This combination of functions allows a

complex vector to be multiplied by the internally generated

(cos, sin) vector for quadrature modulation and

demodulation. As shown in the Block Diagram, the

HSP45116A is divided into three main sections. The Phase/

Frequency Control Section (PFCS) and the Sine/Cosine

Section together form a complex NCO. The CMAC multiplies

the output of the Sine/ Cosine Section with an external

complex vector.

The inputs to the Phase/Frequency Control Section consist

of a microprocessor interface and individual control lines.

The phase resolution of the PFCS is 32 bits, which results in

frequency resolution better than 0.013Hz at 52MHz. The

output of the PFCS is the argument of the sine and cosine.

The spurious free dynamic range of the complex sinusoid is

greater than 90dBc.

The output vector from the Sine/Cosine Section is one of the

inputs to the Complex Multiplier/Accumulator. The CMAC

multiplies this (cos, sin) vector by an external complex vector

and can accumulate the result. The resulting complex vectors

are available through two 20-bit output ports which maintain

the 90dB spectral purity. This result can be accumulated

internally to implement an accumulate and dump filter.

A quadrature down converter can be implemented by

loading a center frequency into the Phase/Frequency

Control Section. The signal to be down converted is the

Vector Input of the CMAC, which multiplies the data by the

rotating vector from the Sine/Cosine Section. The resulting

complex output is the down converted signal. The bit

position and widths for the outputs of CMAC and Complex

Accumulator (ACC) are programmable.

Features

• NCO and CMAC on One Chip

• 52MHz Version

• 32-Bit Frequency Control

• 16-Bit Phase Modulation

• 16-Bit CMAC

• 0.013Hz Tuning Resolution at 52MHz

• Programmable Rounding Option

• Spurious Frequency Components < -90dBc

• Fully Static CMOS

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Frequency Synthesis

• Modulation - AM, FM, PSK, FSK, QAM

• Demodulation, PLL

• Phase Shifter

• Polar to Cartesian Conversions

Ordering Information

PART NUMBER

PART MARKING

TEMP. RANGE (°C)

PACKAGE

PKG. DWG. #

HSP45116AVC-52

HSP45116AVC-52

0 to +70

160 Ld MQFP (28mmx28mm)

Q160.28x28

HSP45116AVC-52Z (Note) HSP45116AVC-52Z

0 to +70

160 Ld MQFP (28mmx28mm) (Pb-free)

Q160.28x28

NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate

termination finish, which are 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

May 7, 2007

FN4156.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Copyright Intersil Americas Inc. 2007. All Rights Reserved

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