ICS525R-02LF IDT, Integrated Device Technology Inc, ICS525R-02LF Datasheet - Page 4
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ICS525R-02LF
Manufacturer Part Number
ICS525R-02LF
Description
IC CLOCK USER CONFIGURE 28-SSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Generator, Fanout Distributionr
Series
OSCaR™r
Datasheet
1.ICS525R-02LF.pdf
(9 pages)
Specifications of ICS525R-02LF
Pll
Yes with Bypass
Input
Clock, Crystal
Output
CMOS
Number Of Circuits
1
Ratio - Input:output
1:2
Differential - Input:output
No/No
Frequency - Max
250MHz
Divider/multiplier
Yes/No
Voltage - Supply
3 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-SSOP
Frequency-max
200MHz
Number Of Elements
1
Supply Current
8mA
Pll Input Freq (min)
2MHz
Pll Input Freq (max)
50MHz
Operating Supply Voltage (typ)
3.3/5V
Operating Temp Range
0C to 70C
Package Type
QSOP
Output Frequency Range
Up to 250MHz
Operating Supply Voltage (min)
3V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Commercial
Pin Count
28
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
525R-02LF
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ICS525R-02LF
Manufacturer:
MEDIATEK
Quantity:
2 309
Part Number:
ICS525R-02LF
Manufacturer:
IDT
Quantity:
20 000
MDS 525-01/02 T
External Components/Crystal
Selection
Decoupling Capacitors
The ICS525-01/02 requries two 0.01µF decoupling
capacitors to be connected between VDD and GND,
one on each side of the chip. The capacitor must be
connected close to the device to minimize lead
inductance. No external power supply filtering is
required for this device.
External Resistors
A 33 series terminating resistor can be used next to
the CLK and REF pins.
Crystal Load Capacitors
The approximate total on-chip capacitance for a crystal
is 16 pF, so a parallel resonant, fundamental mode
crystal with this value of load (correlation) capacitance
should be used. For crystals with a specified load
capacitance greater than 16 pF, crystal capacitors may
be connected from each of the pins X1 and X2 to
Ground as shown in the block diagram. The value (in
pF) of these crystal caps should be (CL -16)*2, where
CL is the crystal load capacitance in pF. These external
capacitors are only required for applications where the
exact frequency is critical. For a clock input, connect to
X1 and leave X2 unconnected (no capacitors on
either).
Determining the Output Frequency
Users have full control in setting the desired output
frequency over the range shown in the table on page 2.
To replace a standard oscillator, users should connect
the divider select input pins directly to ground (or VDD,
although this is not required because of internal
pull-ups) during Printed Circuit Board layout. The
ICS525-01/02 will automatically produce the correct
clock when all components are soldered. It is also
possible to connect the inputs to parallel I/O ports to
switch frequencies. By choosing divides carefully, the
number of inputs which need to be changed can be
minimized. Observe the restrictions on allowed values
of VDW and RDW.
Integrated Device Technology, Inc.
4
ICS525-01 Settings
The output of the ICS525-01 can be determined by the
following simple equation:
Where:
Reference Divider Word (RDW) = 1 to 127 (0 not
permitted)
VCO Divider Word (VDW) = 4 to 511 (0, 1, 2, 3 not
permitted)
Output Divider (OD) = values on page 3
Also, the following operating ranges should be
observed:
ICS525-02 Settings
The output of the ICS525-02 can be determined by the
following simple equation:
Where:
Reference Divider Word (RDW) = 0 to 127
VCO Divider Word (VDW) = 0 to 511
Output Divider (OD) = values on page 3
Also, the following operating ranges should be
observed:
See table on page 3 for full details of maximum
output.
See table on page 3 for full details of maximum
output.
30M
200kHz
200kHz
30M
CLK
CLK
●
<
<
www.idt.com
Input Frequency
Input Frequency
Frequency
Frequency
<
<
InputFrequency
---------------------------------------------- -
InputFrequency
---------------------------------------------- -
RDW
RDW
=
=
+
+
OSCaR
Input Frequency
Input Frequency
2
2
x2x
x2x
------------------------------ -
------------------------------ -
VDW
RDW
VDW
RDW
TM
+
+
+
+
User Configurable Clock
8
2
8
2
<
2x
<
2x
240
200M
-------------------------------------------- -
-------------------------------------------- -
RDW
RDW
M
VDW
VDW
3.3
3.3
Revision 081810
+
+
ICS525-01/02
2
2
V or
V or
+
+
8
8
OD
OD
320
400
M
M
5
5
v
v