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813001AGILF

Categorysemiconductor    Analog mixed-signal IC   
File Size264KB,20 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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Parameter NameAttribute value
Product CategoryClock Generators & Support Products
ManufacturerIDT (Integrated Device Technology, Inc.)
RoHSDetails
Mounting StyleSMD/SMT
Package / CaseTSSOP-24
PackagingTube
Height1 mm
Length7.8 mm
Factory Pack Quantity62
Width4.4 mm
Unit Weight0.007478 oz
Dual VCXO w/3.3V, 2.5V LVPECL
FemtoClock™ PLL
G
ENERAL
D
ESCRIPTION
The 813001I is a dual VCXO + FemtoClock™ Multiplier de-
signed for use in Discrete PLL loops. Two selectable external
VCXO crystals allow the device to be used in multi-rate appli-
cations, where a given line card can be switched, for example,
between 1Gb Ethernet (125MHz system reference clock) and
1Gb Fibre Channel (106.25MHz system reference clock) modes.
Of course, a multitude of other applications are also possible
such as switching between 74.25MHz and 74.175824MHz for
HDTV, switching between SONET, FEC and non FEC rates, etc.
The 813001I is a two stage device – a VCXO followed
by a FemtoClock PLL. The FemtoClock PLL can multiply
the crystal frequency of the VCXO to provide an output
frequency range of 40.83MHz to 640MHz, with a random rms
phase jitter of less than 1ps (12kHz – 20MHz). This phase jitter
performance meets the requirements of 1Gb/10Gb Ethernet,
1Gb, 2Gb, 4Gb and 10Gb Fibre Channel, and SONET up to
OC48. The FemtoClock PLL can also be bypassed if frequen-
cy multiplication is not required. For testing/debug purposes,
de-assertion of the output enable pin will place both Q and nQ
in a high impedance state.
813001I
DATASHEET
F
EATURES
• One 3.3V or 2.5V LVPECL output pair
• Two selectable crystal oscillator interfaces for the VCXO,
one differential clock or one LVCMOS/LVTTL clock inputs
• CLK1/nCLK1 supports the following input types:
LVPECL, LVDS, LVHSTL, SSTL, HCSL
• Crystal operating frequency range: 14MHz - 24MHz
• VCO range: 490MHz - 640MHz
• Output frequency range: 40.83MHz - 640MHz
• VCXO pull range: ±100ppm (typical)
• Supports the following applications (among others):
SONET, Ethernet, Fibre Channel, HDTV, MPEG
• RMS phase jitter @ 622.08MHz (12kHz - 20MHz):
0.84 (typical)
• Supply voltage modes:
V
CC
/V
CCO
3.3V/3.3V
3.3V/2.5V
2.5V/2.5V
• -40°C to 85°C ambient operating temperature
• Available in RoHS/Lead-Free compliant package
B
LOCK
D
IAGRAM
VCO_SEL
Pullup
CLK_SEL0
Pulldown
CLK_SEL1
Pullup
CLK0
Pulldown
CLK1
Pulldown
nCLK1
Pullup
XTAL_IN0
00
01
PD
10
(default)
0
Output Divider N
N2:N0
000 ÷1
001 ÷2
010 ÷3
011 ÷4
(default)
100 ÷5
101 ÷6
110 ÷8
111 ÷12
VCO
490-640MHz
1
XTAL_OUT0
XTAL_IN1
Q
nQ
VCXO
11
XTAL_OUT1
VC
M2
Pullup
M1
Pulldown
Pulldown
M0
Pulldown
N2
Pullup
N1
Pullup
N0
Pullup
OE
Feedback Divider M
M2:M0
000 ÷16
001 ÷20
010 ÷22
011 ÷24
100 ÷25
(default)
101 ÷32
110 ÷40
111 MR
P
IN
A
SSIGNMENT
VCO_SEL
N0
N1
N2
V
CCO
Q
nQ
V
EE
V
CCA
V
CC
XTAL_OUT1
XTAL_IN1
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
CLK_SEL1
CLK_SEL0
OE
M2
M1
M0
CLK1
nCLK1
CLK0
VC
XTAL_IN0
XTAL_OUT0
813001I
24-Lead TSSOP
4.40mm x 7.8mm x 0.92mm
package body
G Package
Top View
1
©2015 Integrated Device Technology, Inc.
813001I REVISION A 3/17/15
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