PECL OSCILLATORS
HP624 PECL OSCILLATORS
6 Pin SMD Package
FEATURES
·
·
·
·
·
Stable and clean 100KH differential signals
Uses inverted mesa, fundamental mode crystals
No PLL, multiplier or overtone-mode crystals used
Very low jitter <1ps
Standard 14 pin DIL, 6 pin SMD package
OUTLINES & DIMENSIONS
GENERAL SPECIFICATION
Output Waveform:
Frequency Range:
Standard Frequencies:
PECL 100K square wave
Fundamental mode crystal
19.440MHz to 250MHz
38.880, 44.736, 50.0, 77.76,
100.0, 106.25, 125.0, 155.52,
166.6286, 200.0, 207.360 and
212.500MHz (partial list)
See table
LVPECL
PECL
+3.3V±5%
+5.0V±5%
2.25V min.
3.95V min.
4.05V typ.
4.15V max.
1.65V max.
3.15V min.
3.25V typ.
3.35V max.
See table
50W into Vcc-2V
or Thevenin equivalent*
1.5ns max (20%~80%Vcc)
50±2% typ., 50±5% max.
(both outputs)
See table
-50dBc @ 10Hz offset
-80dBc @ 100Hz offset
-110dBc @ 1kHz offset
-135dBc @ 10kHz offset
-145dBc @ 100kHz offset
-145dBc @ 1MHz offset
10ms max.
±2ppm/year max.
-55° to +100°C
Frequency Stability:
Input Voltage Vcc
Output Voltage HIGH ‘1’ V
OH
:
LOW ‘0’ V
OL
:
JITTER (Example)
Jitter at 155.520MHz 5.0Volts
pico seconds RMS max.
1Hz ~ 1MHz
10Hz ~ 1MHz
100Hz ~ 1MHz
12kHz ~ 20MHz
10Hz ~ 20MHz
20
1.8
0.2
1.0
5.0
Current Consumption:
Load:
Rise/Fall Times:
Duty Cycle:
Jitter:
SSB Phase noise:
CURRENT CONSUMPTION
Current Consumption (mA)
155.520MHz
+3.3
+5.0
58
85
77.760MHz
54
73
Start-up Time:
Ageing:
Storage Temperature:
Tri-state Option
PECL output is disabled and complementary output remains high
when Tristate pin is
HIGH.
Both PECL and complementary PECL
outputs are high when Tristate pin is
LOW.
* Terminating resistors required on all outputs.)
ORDER CODE
Supply
Voltage
HP624
Stability Code
(A to F)
Nominal
Frequency
Nominal
Frequency
Options
FREQUENCY STABILITY
Stability
(ppm)
±25
±50
±100
Temperature Range Order Code
0°~+70°C
A
B
C
-40°~+85°C
D
E
F
‘3’ for +3.3V Package Stability Code
A to F or
‘5’ for +5.0V Style
Cxx or Ixx
EXAMPLE:
Options
See table
5HP624-A-125.0-1T
This describes HP624 package PECL, +5.0Volt supply, ±25ppm over 0°to
+70°C, at frequency of 125.0MHz with Tristate option.
Note: For non-standard frequency stability for commercial temperature
range use the Code’C’ followed by the stability, example ‘C20’ for
±20ppm over 0° to +70°C. For industrial temperature range use ‘I’
and the stability, example ‘I20’ for ±20ppm over -40° to +85°C.
MODEL OPTIONS
Pt. No.
Suffix
-1T
-3T
Pin 1
Tristate
No Connection
Pin 3
Pin 7
Pin 8
Pin 12
Complimentary
PECL Output
Complimentary
PECL Output
Pin 14
Supply Voltage
Supply Voltage
No Connection Case Ground PECL Output
Tristate
Case Ground PECL Output
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk
Programming Basics
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