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Frequency Timing and Translation Modules
Model Name NW34M25WA
n Main Application
SONET, SDH, FTTH, Communications equipment
NEW
Frequency Controlled Crystal Oscillator (FCXO) Clock Generator Modules
n Features
l Dual reference inputs, LVPECL and CMOS outputs l Simple hardware control for operational mode l Automatic Free-run upon loss of input reference l Lock acquisition time < 1 second
* Module markings may be changed without notice.
n Specifications
Item Supply Voltage (VCC) Current Consumption Operating Temp. Range Input Level Input Reference Frequency Output Levels Output Frequencies (MHz) Free-run accuracy (at 25C) Capture / pull-in range Model NW34M25WA
+3.3 V DC 5% 200 mA typ 0 to +70C 2-CMOS 19.44 MHz* 2(3) LVPECL and 1 CMOS 77.76 (LVPECL1, CMOS) and 155.52 (LVPECL0)* 20x10-6 max. 25 x10-6 min.
(*other frequencies are available)
n List of Ordering Codes
Input reference frequency (MHz) 19.44 LVPECL 0 155.52 Output frequencies (MHz) LVPECL 1 LVPECL 2 77.76 High-Z CMOS 77.76 Ordering Code NW34M25WA-155.52M-NSA3436A
n Dimensions
mm
PAD No.
#1 #2 #3 25.40.3 #4 #5 #6 #7 34.30.3 4.8max #8 #9 #10 #11 #12
#1 #2 #3 #4 #5 #6 #7 #8 #9 #10
n Control Functions
Control 1 Connection
Alarm Output Ref A Input DNC Ref B Input OPT (LVPECL 2+) OPT (LVPECL 2-) VCC GND LVPECL 1+ LVPECL 1- LVPECL 0+ LVPECL 0- GND VCC CMOS Output DNC DNC DNC Control 1
Control 2 0 1 0 1
Mode of operation Lock to Ref A Lock to Ref B Forced Free-run Outputs are Tri-stated
0 0 1 1
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#13 #14 20.40.2 #15 #16 #17 #18 #19
2.540.2
#20 #19 #18 #17 #16 #15 #14 #13 #12 #11
1.80.2
2.540.15
#20 Control 2 DNC : Do not connect
co34_080205_NW34M25WA_e1

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