ICS840001I-25 Datasheet, PDF (1/12 Pages) Integrated Device Technology – FEMTOCLOCK LVCMOS LVTTL CLOCK GENERATOR

ICS840001I-25
FEMTOCLOCK™ LVCMOS/LVTTL CLOCK GENERATOR
FEMTOCLOCK™
LVCMOS/LVTTL CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS840001I-25 is a General Purpose Clock
ICS
Generator and a member of the HiPerClocks^TM fam-
HiPerClockS™ _{ily of high performance devices from IDT. The}
ICS840001I-25 can accept frequency from a
22.4MHz to 170MHz and generate a 22.4MHz to
170MHz output. The ICS840001I-25 has excellent phase jitter
performance, from 637kHz – 10MHz integration range. The
ICS840001I-25 is packaged in a small 8-pin TSSOP, making it
ideal for use in systems with limited board space.
ICS840001I-25
FEATURES
• One LVCMOS/LVTTL output, 15Ω output impedence
• Output frequency range: 22.4MHz – 170MHz
• VCO range: 560MHz to 680MHz
• RMS phase jitter @ 125MHz (637kHz - 10MHz): 0.36ps (typical)
• Full 3.3V or 2.5V operating supply
• -40°C to 85°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
COMMONLY USED FREQUENCY TABLE
Inputs
SEL2
0
0
0
SEL1
0
0
1
SEL0
0
1
0
M Divider
25
10
4
0
1
1
5
1
0
0
10
1
0
1
5
1
1
0
4
1
1
1
10
N Divider
25
25
25
25
10
5
4
25
REF_IN (MHz)
25
62.5
156.25
125
62.5
125
156.25
62.5
Output Frequency (MHz)
Q
25
25
25
25
62.5
125
156.25
25 (default)
BLOCK DIAGRAM
N
REF_IN ^Pullup
Phase
Detector
VCO
560-680MHz
÷4
Q
÷5
÷10
÷25
M
÷4, ÷5, ÷10, ÷25
SEL_[0:2] ^Pullup
3
PIN ASSIGNMENT
VDD 1
REF_IN 2
SEL_0 3
SEL_1 4
8Q
7 VDDO
6 GND
5 SEL_2
ICS840001I-25
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm package body
G Package
Top View
IDT^™ / ICS^™ LVCMOS CLOCK GENERATOR
1
ICS840001BGI-25 REV. A MARCH 31, 2009