ICS810252BKI-02LF IDT, Integrated Device Technology Inc, ICS810252BKI-02LF Datasheet

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ICS810252BKI-02LF

Manufacturer Part Number
ICS810252BKI-02LF
Description
IC VCXO ATTENUATOR/MULT 32VFQFPN
Manufacturer
IDT, Integrated Device Technology Inc
Series
HiPerClockS™, FemtoClock®r
Type
Frequency Translator, Jitter Attenuator, Multiplexer , Voltage Controlled Crystal Oscillator (VCXO)r
Datasheet

Specifications of ICS810252BKI-02LF

Pll
Yes
Input
HCSL, LVDS, LVHSTL, LVPECL, SSTL
Output
LVCMOS, LVTTL
Number Of Circuits
1
Ratio - Input:output
2:2
Differential - Input:output
Yes/No
Frequency - Max
312.5MHz
Divider/multiplier
Yes/No
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
*
Frequency-max
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
810252BKI-02LF
VCXO JITTER ATTENUATOR &
IDT
G
and frequency translation. The device contains two internal
frequency multiplication stages that are cascaded in series.
The first stage is a VCXO PLL that is optimized to provide
reference clock jitter attenuation. The second stage is a
FemtoClock™ frequency multiplier that provides the low jitter,
high frequency Ethernet output clock that easily meets Gigabit
and 10 Gigabit Ethernet jitter requirements. Pre-divider and
output divider multiplication ratios are selected using device
selection control pins. The multiplication ratios are optimized
to support most common clock rates used in PDH, SONET
and Ethernet applications. The VCXO requires the use of an
external, inexpensive pullable crystal. The VCXO uses external
passive loop filter components which allows configuration of
the PLL loop bandwidth and damping characteristics. The
device is packaged in a space-saving 32-VFQFN package and
supports industrial temperature range.
P
HiPerClockS™
FEMTOCLOCK™ MULTIPLIER
IC S
IN
ENERAL
/ ICS
A
SSIGNMENT
VCXO JITTER ATTENUATOR/MULTIPLIER
RESERVED
The ICS810252I-02 is a member of the
HiperClockS™ family of high performance clock
solutions from IDT. The ICS810252I-02 is a PLL
based synchronous multiplier that is optimized for
PDH or SONET to Ethernet clock jitter attenuation
CLK_SEL
D
GND
GND
ISET
LF1
LF0
V
ESCRIPTION
DD
5mm x 5mm x 0.925 package body
1
2
3
4
5
6
7
8
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
ICS810252I-02
32-Lead VFQFN
K Package
Top View
24
23
22
21
20
19
18
17
nc
QA
GND
ODASEL_0
GND
nc
QB
V
DDO
1
F
• Two LVCMOS/LVTTL outputs, 14Ω output impedance
• VCXO PLL bandwidth can be optimized for jitter attenuation
• FemtoClock VCO frequency: 625MHz
• 3.3V supply voltage
Each output supports independent frequency selection at
25MHz, 125MHz, 156.25MHz and 312.5MHz
Two differential inputs support the following input types:
LVPECL, LVDS, LVHSTL, SSTL, HCSL
Accepts input frequencies from 8kHz to 155.52MHz including
8kHz, 1.544MHz, 2.048MHz, 19.44MHz, 25MHz, 77.76MHz,
125MHz and 155.52MHz
Attenuates the phase jitter of the input clock by using a low-
cost pullable fundamental mode VCXO crystal
and reference tracking
FemtoClock frequency multiplier provides low jitter, high
frequency output
Absolute pull range: ±50ppm
RMS phase jitter @ 125MHz, using a 25MHz crystal
(10kHz – 20MHz): 1.3ps
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
EATURES
ICS810252BKI-02 REV. A OCTOBER 22,2008
using external loop filter connection
ICS810252I-02

Related parts for ICS810252BKI-02LF

ICS810252BKI-02LF Summary of contents

Page 1

... RMS phase jitter @ 125MHz, using a 25MHz crystal (10kHz – 20MHz): 1.3ps • 3.3V supply voltage • -40°C to 85°C ambient operating temperature • Available in both standard (RoHS 5) and lead-free (RoHS 6) packages 24 GND DDO GND ODASEL_0 17 1 ICS810252I-02 using external loop filter connection ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 2

... Pulldown CLK_SEL 111 = 19440 IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER Loop Filter 25MHz Phase Detector VCXO Charge Pump VCXO Feedback Divider ÷3125 VCXO Jitter Attenuation PLL 2 Output Divider ODASEL_[1:0] FemtoClock PLL 625MHz Output Divider ODBSEL_[1:0] ICS810252BKI-02 REV. A OCTOBER 22,2008 QA QB ...

Page 3

... ICS810252I-02 VCXO JITTER ATTENUATOR & FEMTOCLOCK™ MULTIPLIER ABLE IN ESCRIPTIONS ABLE IN HARACTERISTICS IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER ICS810252BKI-02 REV. A OCTOBER 22,2008 kΩ kΩ Ω ...

Page 4

... ICS810252I-02 VCXO JITTER ATTENUATOR & FEMTOCLOCK™ MULTIPLIER T 3A ABLE RE IVIDER UNCTION ABLE 3B ABLE UTPUT IVIDER UNCTION IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER ABLE ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 5

... ICS810252I-02 VCXO JITTER ATTENUATOR & FEMTOCLOCK™ MULTIPLIER T 3C ABLE REQUENCY UNCTION ABLE IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 6

... DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for ex- tended periods may affect product reliability 3.3V±5 DDO DDX 3.3V±5%, T HARACTERISTICS DD DDO DDX /2. DDO 6 = -40°C 85° – -40°C 85° ICS810252BKI-02 REV. A OCTOBER 22,2008 µ A µ A µ A µ ...

Page 7

... VCXO JITTER ATTENUATOR & FEMTOCLOCK™ MULTIPLIER T 4C ABLE IFFERENTIAL HARACTERISTICS ABLE HARACTERISTICS Ø IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER , 3.3V±5 DDO DDX 3.3V±5 -40°C 85° DDO DDX – ≤ -40°C 85° ICS810252BKI-02 REV. A OCTOBER 22,2008 µ A µ A µ ...

Page 8

... ICS810252I-02 VCXO JITTER ATTENUATOR & FEMTOCLOCK™ MULTIPLIER IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER 125MH YPICAL HASE OISE FFSET REQUENCY 8 Z 125MHz RMS Phase Jitter (Random) 12kHz to 20MHz = 1.04ps (typical ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 9

... VCXO JITTER ATTENUATOR/MULTIPLIER M EASUREMENT V SCOPE nCLK0, Qx nCLK1 CLK0, CLK1 GND D IFFERENTIAL FOUTx Phase Noise Mask FOUTy UTPUT Clock Outputs x 100 UTPUT 9 I NFORMATION DD V Cross Points NPUT EVEL V DDO 2 V DDO 2 tsk(o) KEW 80% 80% 20 ISE ALL IME ICS810252BKI-02 REV. A OCTOBER 22,2008 V CMR 20% ...

Page 10

... R2/R1 = 0.609 Single Ended Clock Input V_REF C1 0. IGURE INGLE NDED IGNAL RIVING 10 3. .01µF 10Ω V DDX 10Ω .01µF 10µF V DDA .01µF 10µ IGURE OWER UPPLY ILTERING = 3.3V, V_REF should be 1.25V DD CLKx nCLKx D I IFFERENTIAL NPUT ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 11

... LVDS_Driv er R1 100 Ohm 3D CLK/nCLK LOCK NPUT D 3.3V LVDS D RIVEN BY A RIVER 2. 120 120 Zo = 60Ω CLK Zo = 60Ω nCLK R1 R2 120 120 3F CLK/ CLK LOCK N NPUT D 2.5V SSTL D RIVEN BY A RIVER ICS810252BKI-02 REV. A OCTOBER 22,2008 3.3V CLK nCLK Receiv er 3.3V HiPerClockS ...

Page 12

... Note on the Surface Mount Assembly of Amkor’s Thermally/ Electrically Enhance Leadfame Base Package, Amkor Technology. EXPOSED HEAT SLUG THERMAL VIA XPOSED AD HERMAL ELEASE 12 : UTPUTS SOLDER PIN LAND PATTERN PIN PAD (GROUND PAD) P – ATH IDE IEW RAWING NOT TO CALE ICS810252BKI-02 REV. A OCTOBER 22,2008 ) ...

Page 13

... It is recommended that the loop filter components be laid out for DD the 3-pole option. This will also allow the 2-pole filter to be used P.C. ICS810252I-02 S IGURE CHEMATIC 13 E XAMPLE ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 14

... µ ± ± ± dependent on the L values for recommended high, mid and low loop TUNE 25MHz C TUNE k ( Ω Ω Ω Ω Ω µ ° ICS810252BKI-02 REV. A OCTOBER 22,2008 in the Crystal LF0 LF1 ISET R SET XTAL_IN XTAL_OUT ...

Page 15

... ABLE FOR JA Multi-Layer PCB, JEDEC Standard Test Boards IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER R I ELIABILITY NFORMATION VFQFN EAD θ θ θ θ θ vs. 0 Air Flow (Meters per Second 37.0°C 2.5 32.4°C/W 29.0°C/W ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 16

... ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER 32 L VFQFN UFFIX FOR EAD layout of this device. The pin count and pinout are shown on the front page. The package dimension are in Table 7 below ABLE ACKAGE IMENSIONS Reference Document: JEDEC Publication 95, MO-220 ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 17

... IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER " " " " " " ° & ° ° & ° ICS810252BKI-02 REV. A OCTOBER 22,2008 ° ° ° ° ...

Page 18

... ICS810252I-02 VCXO JITTER ATTENUATOR & FEMTOCLOCK™ MULTIPLIER IDT ™ / ICS ™ VCXO JITTER ATTENUATOR/MULTIPLIER ICS810252BKI-02 REV. A OCTOBER 22,2008 ...

Page 19

ICS810252I-02 VCXO JITTER ATTENUATOR & FEMTOCLOCK™ MULTIPLIER Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States ...

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