ICS84330AV-02LF IDT, Integrated Device Technology Inc, ICS84330AV-02LF Datasheet - Page 12

• Manufacturer Part Number: ICS84330AV-02LF
• Description: IC SYNTHESIZER 700MHZ 28-PLCC
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Frequency Synthesizerr

Specifications of ICS84330AV-02LF

• Pll: Yes
• Input: LVCMOS, LVTTL, Crystal
• Output: LVPECL
• Number Of Circuits: 1
• Ratio - Input:output: 2:1
• Differential - Input:output: No/Yes
• Frequency - Max: 700MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-PLCC
• Frequency-max: 700MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 84330AV-02LF

If the FREF_EXT input is driven by a 3.3V LVCMOS driver, the
jitter performance can be improved by reducing the amplitude
swing and slowing down the edge rate. Figure 7A shows an
amplitude reduction approach for a long trace. The swing will
be approximately 0.85V for logic low and 2.5V for logic high
84330AV-02
J
ITTER
R
EDUCTION FOR
F
VDD
IGURE
FREF_EXT S
Driver_LVCMOS
7C. E
F
F
Ro ~ 7 Ohm
IGURE
IGURE
VDD
VDD
Driver_LVCMOS
Driver_LVCMOS
DGE
7B. A
7A. A
Ro ~ 7 Ohm
Ro ~ 7 Ohm
R
INGLE
ATE
RS
43
MPLITUDE
MPLITUDE
R
E
EDUCTION BY
ND
www.idt.com
D
RS
100
R
I
RS
200
IFFERENTIAL
R
NPUT
Zo = 50 Ohm
Td
EDUCTION FOR A
EDUCTION FOR A
12
(instead of 0V to 3.3V). Figure 7B shows amplitude reduction
approach for a short trace. The circuit shown in Figure 7C
reduces amplitude swing and also slows down the edge rate
by increasing the resistor value.
I
700MH
NCREASING THE
R1
R2
R1
R2
VDD
200
200
VDD
400
400
LVPECL F
S
L
Z
HORT
ONG
R1
R2
, L
VDD
100
100
VDD
GND
VDD
GND
R
FREF_EXT
FREF_EXT
OW
T
T
ESISTOR
RACE
TEST_CLK
RACE
TEST_CLK
J
VDD
GND
ITTER
REQUENCY
V
FREF_EXT
ALUE
TEST_CLK
ICS84330-02
, C
RYSTAL
S
YNTHESIZER
REV. B JULY 25, 2010
-
TO
-3.3V