HSP50415_07 Datasheet, PDF (1/29 Pages) Intersil Corporation – Wideband Programmable Modulator (WPM)

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Data Sheet
April 23, 2007
HSP50415
FN4559.6
Wideband Programmable Modulator
(WPM)
The HSP50415 Wideband Programmable Modulator (WPM)
is a quadrature amplitude modulator/upconverter designed
for wideband digital modulation. The WPM combines
shaping and interpolation filters, a complex modulator, timing
and carrier NCOs and dual DACs into a single package.
The HSP50415 supports vector modulation, accepting up to
16-bit In phase (I) and Quadrature (Q) samples to generate
virtually any quadrature AM or PM modulation format. A
constellation mapper and 24 Symbol span interpolation
shaping filter is provided for the input baseband signals. Gain
adjustment is provided after the shaping FIR filter. A timing error
generator in the input section allows the on-chip timing NCO to
track the input timing.
The WPM includes a Numerically Controlled Oscillator
(NCO) driven interpolation filter, which allows the input and
output sample rate to have a non-integer or variable
relationship. This re-sampling feature simplifies use of
sample rates that do not have harmonic or integer frequency
relationships to the input data rate and decouples the carrier
from the DATACLK.
A complex quadrature modulator modulates the baseband
data on a programmable carrier center frequency. The WPM
offers digital output spurious Free Dynamic Range (SFDR)
that exceeds 70dB at the maximum output sample rate of
100MSPS, for input sample rates as high as 25MSPS.
X/SIN(X) rolloff compensation filtering is provided. Real
14-bit digital output data is available prior to the 12-bit DACs
providing 20mA full scale output current.
Features
• Output Sample Rates. . . . . . . . . . . . . . . . . . to 100MSPS
• Input Data Rates . . . . . . . . . . . . . . . . Up to 25MSPS (I/Q)
• 32-Bit Programmable Carrier NCO
• X/SIN(X) Rolloff Compensation
• Programmable I and Q Shaping FIR Filters:
- Up to 24 Symbol Span
• Fixed or NCO Controlled Interpolation:
- Interpolation Range . . . . . . . . . . . . . . . . . . . 4 to >128k
- Digital PLL to Lock to Input Symbol Clock
• Digital Signal Processing Capable of >70dB SFDR
• Dual 12-bit D/A Processing Capable of >50dB SFDR
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Wide-Band Digital Modulation
• Base Station Modulators
• HSP50415EVAL1 Evaluation Board Available
Ordering Information
PART NUMBER
PART MARKING
TEMP RANGE (°C)
PACKAGE
PKG. DWG #
HSP50415VI
HSP50415VI
-40 to +85
100 Ld MQFP
Q100.14x20
HSP50415VIZ (Note)
HSP50415VIZ
-40 to +85
100 Ld MQFP (Pb-free) Q100.14x20
HSP50415EVAL1
Evaluation Board
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.
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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