ISL5217 Datasheet, PDF (1/43 Pages) Intersil Corporation – Quad Programmable Up Converter

®
Data Sheet
March 2003
ISL5217
FN6004.2
Quad Programmable Up Converter
The ISL5217 Quad Programmable
UpConverter (QPUC) is a QASK/FM
modulator/FDM upconverter designed
for high dynamic range applications such as cellular
basestations. The QPUC combines shaping and interpolation
filters, a complex modulator, and timing and carrier NCOs into a
single package. Each QPUC can create four FDM channels.
Multiple QPUCs can be cascaded digitally to provide for up to 16
FDM channels in multi-channel applications.
The ISL5217 supports both vector and FM modulation. In vector
modulation mode, the QPUC accepts 16-bit I and Q samples to
generate virtually any quadrature AM or PM modulation format.
The QPUC also has two FM modulation modes. In the FM with
pulse shaping mode, the 16-bit frequency samples are pulse
shaped/bandlimited prior to FM modulation. No band limiting filter
follows the FM modulator. This FM mode is useful for GMSK type
modulation formats. In the FM with band limiting filter mode, the
16-bit frequency samples directly drive the FM modulator. The
FM modulator output is filtered to limit the spectral occupancy.
This FM mode is useful for analog FM or FSK modulation
formats.
The QPUC includes an NCO driven interpolation filter, which
allows the input and output sample rate to have an integer
and/or variable relationship. This re-sampling feature
simplifies cascading modulators with sample rates that do not
have harmonic or integer frequency relationships.
The QPUC offers digital output spectral purity that exceeds
100dB at the maximum output sample rate of 104MSPS, for
input sample rates as high as 6.5MSPS.
A 16-bit microprocessor compatible interface is used to load
configuration and baseband data. A programmable FIFO depth
interrupt simplifies the interface to the I and Q input FIFOs.
Block Diagram
Features
• Output Sample Rates Up to 104MSPS with Input Data
Rates Up to 6.5MSPS
• Processing Capable of >140dB SFDR Out of Band
• Vector modulation for supporting IS-136, EDGE, IS95, TD-
SCDMA, CDMA-2000-1X/3X, W-CDMA, and UMTS
• FM Modulation for Supporting AMPS, NMT, and GSM
• Four Completely Independent Channels on Chip, Each With
Programmable 256 Tap Shaping FIR, Half-Band, and High
Order Interpolation Filters
• 16-Bit parallel µProcessor Interface and Four Independent
Serial Data Inputs
• Two 20-bit I/O Buses and Two 20-bit Output Buses Allow
Cascading Multiple Devices
• 32-Bit Programmable Carrier NCO; 48-Bit Programmable
Symbol Timing NCOs
• Dynamic Gain Profiling and Output Routing Control
Applications
• Single or Multiple Channel Digital Software Radio
Transmitters (Wide-Band or Narrow-Band)
• Base Station Transmitter and Smart Antennas
• Operates with HSP50216 in Software Radio Solutions
• Compatible with the HI5960/ISL5961 or HI5828/ISL5929
D/A Converters
Ordering Information
PART
NUMBER
ISL5217KI
ISL5217EVAL1
TEMP
RANGE (^oC) PACKAGE
-40 to 85 196 Ld BGA
25
Evaluation Kit
PKG. NO
V196.15x15
SDA
SDB
INPUT ^I/Q _SHAPING ^{I/Q I/Q} _HALF ^I/Q _INTPL ^I/Q _COMPLEX ^I/Q
SDC
SDD
DATA
FILTER/
FM MOD.
BAND
FILTER
MIXER
SIN
COS
CARRIER
NCO
SAMPLE
NCO
CHANNEL 0
CHANNEL 1
P<15:0>
A<6:0>
{CNTRL}
PARALLEL HOST INTERFACE
CHANNEL 2
CHANNEL 3
CONFIGURATION AND CONTROL BUS
I0
Q0 _{4 CH}
I1 SUM
Σ ^Q1
I2
Q2
Σ ^I3
Q3 ₁
Σ2
Σ3
Σ⁴
DELAY
SUM
CAS IOUT(19:0)
SUM
CAS
SUM QOUT(19:0)
QIN(19:0)
IIN(19:0)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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