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ISL5216 Datasheet

  • ISL5216

  • Four-Channel Programmable Digital DownConverter

  • 65頁

  • INTERSIL   INTERSIL

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ISL5216
TM
Data Sheet
February 2002
FN6013.1
Four-Channel Programmable Digital
DownConverter
The ISL5216 Quad Programmable Digital DownConverter
(QPDC) is designed for high dynamic range applications
such as cellular basestations where multiple channel
processing is required in a small physical space. The QPDC
combines into a single package a set of four channels which
include: digital mixers, a quadrature carrier NCO, digital
鏗乴ters, a resampling 鏗乴ter, a Cartesian-to-polar coordinate
converter and an AGC loop.
The ISL5216 accepts four channels of 16-bit 鏗亁ed or up to
14-bit mantissa / 3-bit exponent 鏗俹ating point real or
complex digitized IF samples which are mixed with local
quadrature sinusoids. Each channel carrier NCO frequency
is set independently by the microprocessor. The output of
the mixers are 鏗乴tered with a CIC and FIR 鏗乴ters, with a
variety of decimation options. Gain adjustment is provided
on the 鏗乴tered signal. The digital AGC provides a gain adjust
range of up to 96dB with programmable thresholds and slew
rates. A cartesian to polar coordinate converter provides
magnitude and phase outputs. A frequency discriminator is
also provided to allow FM demodulation. Selectable outputs
include I samples, Q samples, Magnitude, Phase, Frequency
and AGC gain. The output resolution is selectable from 4-bit
鏗亁ed point to 32-bit 鏗俹ating point.
Output bandwidths in excess of 1 MHz are achievable using
a single channel. Wider bandwidths are available by
cascading or polyphasing multiple channels.
Features
鈥?Up to 95MSPS Input
鈥?Four Independently Programmable Downconverter
Channels in a single package
鈥?Four Parallel 17-Bit Inputs providing 16-bit 鏗亁ed or one of
several 17-bit 鏗俹ating point formats
鈥?32-Bit Programmable Carrier NCO with > 115dB SFDR
鈥?110dB FIR Out of Band Attenuation
鈥?Decimation from 4 to >65536
鈥?24-bit Internal Data Path
鈥?Digital AGC with up to 96dB of Gain Range
鈥?Filter Functions
- 1- to 5-Stage CIC Filter
- Halfband Decimation and Interpolation FIR Filtering
- Programmable FIR Filtering
- Resampling FIR Filtering
鈥?Cascadable Filtering for Additional Bandwidth
鈥?Four Independent Serial Outputs
鈥?2.5V Core, 3.3V I/O Operation
Applications
鈥?Narrow-Band TDMA through IS-95 CDMA Digital Software
Radio and Basestation Receivers
鈥?Wide-Band Applications: W-CDMA and UMTS Digital
Software Radio and Basestation Receivers
Ordering Information
PART
NUMBER
ISL5216KI
ISL5216KI-1
TEMP
RANGE (
o
C)
-40 to 85
-40 to 85
PACKAGE
PKG. NO
196 Ld 0.8 mm V196.12x12
BGA
196 Ld 1.0 mm V196.15x15
BGA
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2002. All Rights Reserved

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