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HSP43216JC-52 Datasheet

  • HSP43216JC-52

  • Halfband Filter

  • 19頁

  • INTERSIL   INTERSIL

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HSP43216
Data Sheet
January 1999
File Number
3365.7
Halfband Filter
The HSP43216 Halfband Filter addresses a wide variety of
applications by combining f
S
/4 (f
S
= sample frequency)
quadrature up/down convert circuitry with a 鏗亁ed coef鏗乧ient
halfband 鏗乴ter processor as shown in the block diagram.
These elements may be con鏗乬ured to operate in one of the
four following modes: decimate by 2 鏗乴tering of a real input
signal; interpolate by 2 鏗乴tering of a real input signal; f
S
/4
quadrature down conversion of a real input signal followed
by decimate-by-2 鏗乴tering to produce a complex analytic
signal; interpolate-by-2 鏗乴tering of a complex analytic signal
followed by f
S
/4 quadrature up conversion to produce a real
valued output.
The frequency response of the HSP43216's halfband 鏗乴ter
has a shape factor, (passband+transition band)/passband,
of 1.24:1 with 90dB of stopband attenuation. The passband
has less than 0.0003dB of ripple from 0f
S
to 0.2f
S
with
stopband attenuation of greater than 90dB from 0.3f
S
to
Nyquist. At 0.25f
S
the 鏗乴ter provides 6dB of attenuation.
The HSP43216 processes data streams with word widths up
to 16 bits and data rates up to 52 MSPS. The processing
throughput of the part is easily doubled to rates of up to 104
MSPS by using the part together with an external multiplexer
or demultiplexer. Programmable rounding is provided to
support output precisions from 8 bits to 16 bits.
Features
鈥?Sample Rates to 52 MSPS
鈥?Architected to Support Sample Rates to 104 MSPS Using
External Multiplexer
鈥?Four Modes of Operation:
- Interpolate by 2 Filtering
- Decimate by 2 Filtering
- Quadrature to Real Signal Conversion
- f
S
/4 Quadrature Down Conversion Followed by
Decimate by 2 Filtering
鈥?16-Bit Inputs and Outputs
鈥?67-Tap Halfband FIR Filter with 20-Bit Coef鏗乧ients
鈥?Two鈥檚 Complement or Offset Binary Outputs
鈥?Programmable Rounding on Outputs
鈥?1.24:1 Filter Shape Factor
鈥?>90dB Stopband Attenuation
鈥?<0.0003dB Passband Ripple
鈥?Saturation Logic on Output
Applications
鈥?Digital Down Conversion
鈥?D/A and A/D pre/post Filtering
Ordering Information
PART
NUMBER
HSP43216GC-52
HSP43216JC-52
HSP43216VC-52
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
0 to 70
PACKAGE
TYPE
85 Ld CPGA
84 Ld PLCC
100 Ld MQFP
PKG. NO.
G85.A
N84.1.15
Q100.14x20
鈥?Tuning Bandwidth Expansion for HSP45116 and
HSP45106
Block Diagram
AIN0-15
INPUT DATA
FLOW
BIN0-15
CONTROLLER
f
S
/4
QUADRATURE
DOWN
CONVERT
PROCESSOR
67-TAP
HALFBAND
FILTER
PROCESSOR
f
S
/4
QUADRATURE
UP CONVERT
PROCESSOR
OUTPUT DATA
FLOW
CONTROLLER/
FORMATTER
BOUT0-15
AOUT0-15
SYNC
USB/LSB
MODE0-1
INT/EXT
RND0-2
FMT
OEA
OEB
CLK
3-193
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
漏
Intersil Corporation 1999

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