ICS84330CI Datasheet, PDF (1/20 Pages) Integrated Circuit Systems – 720MHZ, LOW JITTER, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER

720MHz, Low Jitter, Crystal-to-LVPECL
Frequency Synthesizer
ICS84330CI
DATA SHEET
General Description
The ICS84330CI is a general purpose, single output high frequency
synthesizer. The VCO operates at a frequency range of 250MHz to
720MHz. The VCO and output frequency can be programmed using
the serial or parallel interfaces to the configuration logic. The output
can be configured to divide the VCO frequency by 1, 2, 4, and 8.
Output frequency steps as small as 250kHz to 2MHz can be
achieved using a 16MHz crystal depending on the output divider
settings.
Features
• Fully integrated PLL, no external loop filter requirements
• One differential 3.3V LVPECL output
• Crystal oscillator interface: 10MHz to 25MHz
• Output frequency range: 31.25MHz to 720MHz
• VCO range: 250MHz to 720MHz
• Parallel or serial interface for programming M and N dividers
during power-up
• RMS period jitter: 6ps (maximum)
• Cycle-to-cycle jitter: 40ps (maximum)
• 3.3V supply voltage
• -40°C to 85°C ambient operating temperature
• Available in both standard (RoHS5) and lead-free (RoHS 6)
packages
Pin Assignments
Block Diagram
OE
XTAL1
XTAL2
FREF_EXT
Pullup
OSC
Pulldown
XTAL_SEL
Pullup
1
0
÷ 16
PLL
PHASE DETECTOR
VCO
÷M
÷2
÷2
1
÷4
÷8
÷1
0
S_LOAD
S_DATA
S_CLOCK
nP_LOAD
Pulldown
Pulldown
Pulldown
Pullup
M0:M8
N0:N1
Pullup
Pullup
CONFIGURATION
INTERFACE
LOGIC
FOUT
nFOUT
TEST
25 24 23 22 21 20 19
S_CLOCK 26
18 N1
S_DATA 27
ICS84330CI
17 N0
S_LOAD 28
28 Lead PLCC
16 M8
VCCA 1
V Package
15 ^M7
11.6mm x 11.4mm x 4.1mm
FREF_EXT 2
package body
14 M6
XTAL_SEL 3
Top View
13 M5
XTAL1 4
12 M4
5 6 7 8 9 10 11
32 31 30 29 28 27 26 25
S_CLOCK 1
24 nc
S_DATA 2
S_LOAD 3
VCCA 4
VCCA 5
FREF_EXT 6
XTAL_SEL 7
ICS84330CI
32 Lead LQFP
Y Package
7mm x 7mm x 1.4mm
package body
Top View
23 N1
22 N0
21 ^M8
20 M7
19 M6
18 M5
XTAL1 8
17 M4
9 10 11 12 13 14 15 16
ICS84330CVI REVISION A JANUARY 7, 2011
1
©2011 Integrated Device Technology, Inc.