PECL OSCILLATORS
HP57 PECL OSCILLATORS
6 Pad 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
Miniature 6 pad SMD package 7.5 x 5 x
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
:
Current Consumption:
Load:
Rise/Fall Times:
Duty Cycle:
Jitter:
SSB Phase noise:
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
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
HP57
Stability Code
(A to F)
Nominal
Frequency
Nominal
Frequency
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:
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.
3HP57-A-125.0
This describes HP62 package PECL, +3.3Volt supply, ±25ppm over 0°to
+70°C, at frequency of 125.0MHz.
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
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