TMB Datasheet, PDF (1/2 Pages) EUROQUARTZ limited – TMB SERIES SYNCHRONOUS TIMING MODULES

SYNCHRONOUS TIMING MODULES
TMB SERIES SYNCHRONOUS TIMING MODULES
8kHz Inputs, LVPECL outputs <622.080MHz
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.
OUTLINES & DIMENSIONS
Page 1 of 2
FEATURES
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.
GENERAL SPECIFICATION
Input Reference Frequency:
Output Frequency:
Supply Voltage:
Current Consumption:
Acquisition Time:
Capture/Pull-in Range:
Input Logic:
Output Logic Levels
HIGH:
LOW:
Output Capacitance:
Duty Cycle:
Rise and Fall Times:
Free Run Accuracy:
Output Jitter:
Input Jitter Tolerance:
Jitter Filter Band Width:
Operating Temperature Range
COMMERCIAL:
INDUSTRIAL:
* Custom inputs available.
8kHz (A & B)*
<622.080MHz
+3.3 Volts ±5%
120mA minimum
150mA typical
200mA maximum
1 second
±40ppm
CMOS
2.2V mon., 2.3V typ., 2.5V max.
1.4V min., 1.5V typ., 1.6V max.
10pF
40%60% at 50% level
220ps
±20ppm maximum
1ps RMS,
12kHz to 20MHz bandwidth
7microseconds
10Hz max. 3dB loop response
0°~+70°C (Code ‘C’)
-40°~+85°C (Code ‘I’)
FUNCTIONAL BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Vcc
Vin
Tstg
Tref
Description
Supply Voltage relative to ground
Input Voltage relative to ground
Storage Temperature (Ambient)
Maximum reflow Temperature
Rating
-0.5V to 4.0V
-0.5V to 5.5V
-65° to +100°C
240°C
PART NUMBERS
Part numbers are generated according to this scheme:
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
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
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: [phone] Fax: [phone] email: [e-mail] web: www.euroquartz.co.uk