843034I-06 Datasheet, PDF (1/25 Pages) Integrated Device Technology – FemtoClock™ Multi-Rate 3.3V LVPECL Frequency Synthesizer

FemtoClock™ Multi-Rate 3.3V LVPECL
Frequency Synthesizer
843034I-06
DATA SHEET
GENERAL DESCRIPTION
The 843034I-06 is a general purpose, low phase noise LVPECL
synthesizer which can generate frequencies for a wide variety of
applications. The 843034I-06 has a 4:1 input multiplexer from which
the following inputs can be selected: one differential input, one
single-ended input, or one of two crystal oscillators, thus making the
device ideal for frequency translation or frequency generation. The
843034I-06 has dual LVPECL outputs that may be programmed for
÷2, ÷4 or ÷5 of the VCO frequency. The 843034I-06 also supplies
a buffered copy of the reference clock or crystal frequency on the
single-ended REF_OUT pin which can be enabled or disabled
(disabled by default). The output frequency can be programmed
using either a serial or parallel programming interface. This device
supports Spread Spectrum Clocking (SSC) for EMI reduction.
FEATURES
• Dual differential 3.3V LVPECL outputs
• 4:1 Input Mux:
One differential input
One single-ended input
Two crystal oscillator interfaces
• CLK, nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL
• Output frequency range: 120MHz to 375MHz
• Crystal input frequency range: 12MHz to 40MHz
• VCO range: 600MHz to 750MHz
• Supports Spread Spectrum Clocking (SSC)
• Parallel or serial interface for programming feedback divider
and output dividers
• RMS phase jitter at 166.6MHz, using a 22.222MHz crystal
(12kHz to 30MHz): 1.33ps (typical), SSC - Off
• 3.3V supply mode
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package
• Use functional replacement part 8t49N241-dddNLGI
BLOCK DIAGRAM
PIN ASSIGNMENT
843034I-06 REVISION B 8/20/15
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