can also generate SATA and 10Gb Fibre Channel reference
clock frequencies with the appropriate choice of crystals. The
ICS843252I-04 has excellent phase jitter performance and is
packaged in a small 16-pin TSSOP, making it ideal for use in
systems with limited board space.
F
EATURES
•
Two differential 3.3V LVPECL output
•
Crystal oscillator interface designed for
18pF parallel resonant crystals
•
Crystal input frequency range: 19.33MHz - 30MHz
•
Output frequency range: 145MHz - 187.5MHz
•
VCO frequency range: 580MHz - 750MHz
•
RMS phase jitter at 156.25MHz (1.875MHz - 20MHz):
0.39ps (typical)
•
3.3V operating supply
•
-40°C to 85°C ambient operating temperature
•
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
IC
S
C
ONFIGURATION
T
ABLE WITH
25MH
Z
C
RYSTAL
Inputs
Crystal Frequency
25MHz
25MHz
Feedback Divide
÷30
÷25
VCO Frequency
750MHz
625MHz
N Output Divide
÷4
÷4
Output Frequency Application
187.5MHz
12 Gigabit Ethernet
156.25MHz
10 Gigabit Ethernet
C
ONFIGURATION
T
ABLE WITH
S
ELECTABLE
C
RYSTALS
Inputs
Crystal Frequency
20MHz
21.25MHz
24MHz
25.5MHz
30MHz
Feedback Divide
÷30
÷30
÷2 5
÷2 5
÷2 5
VCO Frequency
600MHz
637.5MHz
600MHz
637.5MHz
750MHz
N Output Divide
÷4
÷4
÷4
÷4
÷4
Output Frequency Application
SATA
150MHz
159.375MHz
150MHz
159.375MHz
187.5MHz
10 Gigabit Fibre Channel
SATA
10 Gigabit Fibre Channel
12 Gigabit Ethernet
B
LOCK
D
IAGRAM
OE
nPLL_SEL
REF_CLK
Pullup
Pulldown
P
IN
A
SSIGNMENT
D
Q
LE
1
nQ1
Q1
V
CCO
OE
nPLL_SEL
V
CCO
Q0
nQ0
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
XTAL_IN
XTAL_OUT
V
EE
REF_CLK
CLK_SEL
V
CC
V
CCA
FREQ_SEL
Pulldown
1
XTAL_IN
OSC
XTAL_OUT
CLK_SEL
Pulldown
0
Phase
Detector
VCO
580MHz-750MHz
DIV. N
÷4
0
Q0
nQ0
Q1
nQ1
ICS843252I-04
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
0 = ÷25
(default)
1 = ÷30
FREQ_SEL
Pulldown
The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization
and/or qualification. Integrated Device Technology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.