ICS8732-01 Datasheet, PDF (1/17 Pages) Integrated Device Technology – Maximum output frequency

ICS8732-01
LOW VOLTAGE, LOW SKEW
3.3V LVPECL CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS8732-01 is a low voltage, low skew,
3.3V LVPECL Clock Generator. The ICS8732-01 has two
selectable clock inputs. The CLK0, nCLK0 pair can accept
most standard differential input levels. The single ended
clock input accepts LVCMOS or LVTTL input levels. The
ICS8732-01 has a fully integrated PLL along with frequency
configurable outputs. An external feedbackinput and
outputs regenerate clocks with “zero delay”.
The ICS8732-01 has multiple divide select pins for each
bank of outputs along with 3 independent feedback divide
select pins allowing the ICS8732-01 to function both as a
frequency multiplier and divider. The PLL_SEL input can
be usedto bypass the PLL for test and system debug
purposes.In bypass mode, the input clock is routed around
the PLLand into the internal output dividers.
Features
• Ten differential 3.3V LVPECL outputs
• Selectable differential CLK0, nCLK0 or
LVCMOS/LVTTL CLK1 inputs
• CLK0, nCLK0 supports the following input types:
LVPECL, LVDS, LVHSTL, SSTL, HCSL
• CLK1 accepts the following input levels:
LVCMOS or LVTTL
• Maximum output frequency: 350MHz
• VCO range: 250MHz to 700MHz
• External feedback for “zero delay” clock regeneration
with configurable frequencies
• Cycle-to-cycle jitter: CLK0, nCLK0, 50ps (maximum)
CLK1, 80ps (maximum)
• Output skew: 150ps (maximum)
• Static phase offset: -150ps to 150ps
• Lead-Free package fully RoHS compliant
BLOCK DIAGRAM
CLK_SEL
CLK0
nCLK0
CLK1
FB_IN
nFB_IN
0
0
÷2 ÷4 ÷6 ÷8
1
PLL 1
÷2 ÷4 ÷8 ÷12
÷4 ÷6 ÷8 ÷10
÷8 ÷12 ÷16 ÷20
PLL_SEL
DIV_SELA0
DIV_SELA1
DIV_SELB0
DIV_SELB1
FBDIV_SEL0
FBDIV_SEL1
FBDIV_SEL2
MR
8732AY-01
PIN ASSIGNMENT
QA0
nQA0
QA1
nQA1
QA2
nQA2
QA3
nQA3
QB0
nQB0
QB1
nQB1
QB2
nQB2
QB3
nQB3
QFB0
nQFB0
QFB1
nQFB1
VCCO
QA0
52 51 50 49 48 47 46 45 44 43 42 41 40
1
39
2
38
VCCO
nQB3
nQA1
VEE
PLL_SEL
VCCO
nQA2
QA3
nQA3
VEE
5
35
6
34
7
ICS8732-01
33
31
10
30
11
29
12
28
13
27
14 15 16 17 18 19 20 21 22 23 24 25 26
QB2
VEE
MR
VCCO
QB1
nQB0
QB0
VEE
52-Lead LQFP
10mm x 10mm x 1.4mm package body
Y package
Top View
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1
REV. E MAY 2, 2013