TMB EUROQUARTZ | Alldatasheet
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EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE SYNCHRONOUS TIMING MODULES Input Reference Frequency: 8kHz (A & B)* Output Frequency: <622.080MHz Supply Voltage: +3.3 Volts ±5% Current Consumption: 120mA minimum 150mA typical 200mA maximum Acquisition Time: 1 second Capture/Pull-in Range: ±40ppm Input Logic: CMOS Output Logic Levels Output Capacitance: 10pF Duty Cycle: 40%60% at 50% level Rise and Fall Times: 220ps Free Run Accuracy: ±20ppm maximum Output Jitter: 1ps RMS, 12kHz to 20MHz bandwidth Input Jitter Tolerance: 7microseconds Jitter Filter Band Width: 10Hz max. 3dB loop response Operating Temperature Range COMMERCIAL: 0°~+70°C (Code ‘C’) INDUSTRIAL: -40°~+85°C (Code ‘I’) Loss of Reference (LOR) and Loss of Lock (LOL) active alarms. Two 8kHz reference inputs, CMOS levels. Custom input frequencies upon request. Continuous input monitoring of the two external frequencies. Automatic FREE RUN mode on Loss of Reference (both A&B) <622.080MHz LVPECL outputs with enable/disable functions Free-run clock output +3.3V SMD package, current 150mA. TMB SERIES SYNCHRONOUS TIMING MODULES * Custom inputs available.
FEATURES
OUTLINES & DIMENSIONS PART NUMBERS
DESCRIPTION
TMB (Synchronous Timing Module, model B) series parts consists of a PLL module that generates LVPECL outputs up to 622.080MHz from a low- jitter VCXO. The module is locked to one of two 8kHz reference inputs, selectable by the A/B SEL pad. PECL and complimentary PECL outputs can be disabled by pad 1, the control pad. Pad 12 gives an alarm signal when ‘Loss Of Lock’ or ‘Loss Of Reference’ occurs. The module will enter into Free Run mode, signaled from pad 9 FR status, when both REF A and REF B are absent. Applications include Line Cards and Service Termination Cards for SONET, SDH, ATM and PDH network equipment. FUNCTIONAL BLOCK DIAGRAM 8kHz Inputs, LVPECL outputs <622.080MHz Page 1 of 2 Supply Voltage Package Type Operating Temperature Range Input Frequency Output Frequency “3” for +3.3 V TMB25 “C”=0°~+70°C “I”=-40°~+85°C Add “k” for kHz Output Frequency in MHz Part numbers are generated according to this scheme: EXAMPLE: 3TMB25-C-8K-622.080 Representing: +3.3V supply, model TMB (25mm square, 18 pad SMD package), Commercial operating temperature range, 8kHz input frequency and output frequency is 622.080MHz ABSOLUTE MAXIMUM RATINGS Vcc Supply Voltage relative to ground -0.5V to 4.0V Vin Input Voltage relative to ground -0.5V to 5.5V Tstg Storage Temperature (Ambient) -65° to +100°C Tref Maximum reflow Temperature 240°C Symbol Description Rating
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE SYNCHRONOUS TIMING MODULES TMB SERIES SYNCHRONOUS TIMING MODULES 8kHz Inputs, LVPECL outputs <622.080MHz Page 2 of 2 AUTO RESET ENABLE A/B SELECT REF A REF B FR FR STATUS ALARM Q Q NOTE 0 1 0 X X X X 1 X X X FR
0 X 1 X X X X X X 0 1
0 0 0 X NA NA 0 1 1 X X FR 1 0 0 X A A 0 0 0 X X RA* 1 0 0 X A NA 0 0 0 X X RA* 1 0 0 X NA A 0 0 0 X X RB** 1 0 0 X NA NA 0 1 1 X X FR KEY A: ACTIVE FR: FREE RUN MODE RA: LOCKED TO A RB: LOCKED TO B NA: NOT ACTIVE NL: NOT LOCKED X: DON’T CARE PAD CONNECTION DESCRIPTION
1 ENABLE VCXO Enable (0=Enable, 1= Disable)
2 NC Not connected
3 NC Not connected
4 REF A Reference Input A
5 A/B SEL Reference Select (0=Input A, 1=Input B)
6 RESET Reset (Reset = 1)
7 REF B Reference Inpt B
8 GRN Ground
9 FR STATUS Free Run Status (Unit on Free Run = 1)
10 Vcc Supply Voltage (+3.3VDC)
11 AUTO Automatic Function
12 ALARM Loss of Reference (Alarm = 1)
13 FR Force Free Run (Free Run = 1)
14 NC Not connected
15 NC Not connected
16 Q LVPECL Complimentary Output
17 GRN Ground
18 Q LVPECL Output
Pad No. Pad Name Description of Function INPUT SELECTION AND OUTPUT RESPONSE * If AUTO is on (1) the system will lock to REF A ** If REF A is lost the system will lock to REF B automatically; if both References are lost the unit go into FREE RUN.