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Part: M2004-02PB
Category:
Description:
Company: Integrated Circuit System
Datasheet: Download M2004-02PB datasheet File size : 58 kB
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Integrated Circuit Systems, Inc.
Product Brief
M2004-02
FREQUENCY TRANSLATION PLL
GENERAL DESCRIPTION
The M2004-02 is a VCSO (Voltage Controlled SAW Oscillator) based clock generator PLL designed for reference clock frequency translation and jitter attenuation in a high-speed data communications system. The device's clock multiplication ratio and output divider ratio are user selectable through serial programing or parallel select pins. External loop filter components allow tailoring of the PLL loop response.
PIN ASSIGNMENT (9 x 9 mm SMT)
nDIF_REF REF_CLK REF_SEL DIF_REF GND VCC 19 18 17 16 NC 21 NC 20 M0 27
26
24
25
23
M1 M2 M3 M4
28 29 30 31 32 33 34 35 36 5 6 7 1 2 3 4 8 9
22
NC MR nFOUT FOUT GND N1 N0 VCC GND
F EATURE S
· Similar to M2004-01 but with a differential input · Integrated SAW (surface acoustic wave) delay line · Output clock center frequencies from 37.5 to 700 MHz · · · · ·
(Specify center frequency at time of order) Low phase jitter 0.5ps RMS, typical (12kHz-20MHz) Low phase noise -104dBc/Hz @ 1kHz offset Ideal for OC-48, STM-16, GbE clock reference Single 3.3V power supply Small 9 x 9 mm SMT package includes SAW device
N1:0 00 01 10 11 N Divider Value 1 2 4 8
M5 VCC DNC DNC DNC
M2004-02
(Top View)
15 14 13 12 11 10
nOP_OUT
Example Input / Output Frequency Combinations
Input Clock (MHz) 19.44 38.80 77.76 155.52 25.00 VCSO Freq 1 (MHz) M5:0 Value (decimal) 32 16 8 4 25 Application
Output Divider Ratios
622.08
OP_OUT
nOP_IN
GND
GND
GND
OP_IN
nVC
VC
OC-12/48
625.00
Gibabit Ethernet
BLOCK DIAGRAM
RLOOP C LOOP
1.Specify VCSO center frequency at time of order
RPOST CPOST CPOST RLOOP C LOOP OP_OUT RPOST nOP_OUT nV C VC
Ex terna l Loop Filter Compon ents
M2004-02
MUX Phase Detector
OP_IN
nOP_IN
DIF_REF nDIF_REF REF_CLK REF_SEL
RIN
SAW Delay Line
1 0
RIN Loop Filter Amplifier
Phase Shifter
VCSO
M Divider
M = 3-1023
N Divider
N = 1,2,4,8
FOUT nFOUT
6
2
M5:0
N1:0
MR
MNC 2004-02 Rev 1.0
M2004-02 Frequency Translation PLL
Revision 112602
I n t e g r a t e d Circuit Systems, Inc. Communications Modules
www.icst.com/comm-modules
tel (508) 852-5400
Others parts begin by m2
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