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IMI4350PB Datasheet

  • IMI4350PB

  • Phase/Frequency Detector

  • 8頁

  • ETC

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IMI4350
May 1998
Approved Product
PHASE DETECTOR
CMOS LSI
PLL FREQUENCY SYNTHESIZERS
PRODUCT DESCRIPTION
The IMI4350 is a member of a family of phaselock loop
synthesizer ICs from International Microcircuits. This is
a phase-frequency detector intended for use with high
reference frequencies. Compatible with sinewave, ECL,
TTL, and CMOS input waveforms makes the IMI4350
extremely versatile in wideband PLL applications.
The IMI4350 is a Type IV phase frequency detector
which has eliminated by design the inherent dead zone
which causes crossover distortion at the critical center
lock point. The IMI circuitry enables consistent low
noise loop designs using the simple single ended
charge pump output. Lock detect output is also
provided.
PRODUCT FEATURES
忙
忙
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>40 MHz typical input frequency
Low power consumption CMOS
-163 dBc/Hz total phase noise floor
No dead zone, by design
Lock detect output
Polarity switch to invert PDout polarity for active
filtering
380
碌A
Current Mode Charge Pump
Unambiguous PLL acquisition
Zero degree phase difference at lock
ECL compatible inputs when AC coupled
Sinewave inputs when AC coupled
TTL, CMOS inputs can be DC coupled
On- or off-chip reference oscillator operation
Small 8 pin SOP package for SMT available
3-volt and 5-volt characterizations
BLOCK DIAGRAM
VDD
POL 3
8
8
OSCout
2
25
OSCin
1
6
4
1
2
1
2
PFD
7
5
PDout
LD
Fin
VSS
1
2
1
2
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571
Rev 1.0
Page 1 of 8

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