Min.
750KHz
Max.
800MHz
F group
0.5 ps
W group
4.0 ps
GD
LVDS Differential
Thru-Hole
SMD
3.3V
Applications
● GDF and GDW uses a high-Q fundamental crystal and a low jitter multiplier circuit.
● GDF offers < 1 ps phase jitter at only a fraction of the cost of a high frequency
fundamental crystal VCXO. GDW series has moderate jitter at a low cost.
General specifications of GDF and GDW only , at Ta=+25°C , CL=15pF
Model
" GDF " series
" GDW " series
High Q fundamental crystal +
low jitter multiplier circuit
High Q fundamental crystal +
multiplier circuit
Technology
Output Logic
LVDS
Available Frequency Range
Supply Voltage VDD
38.0 MHz ~ 640.0 MHz
+3.3 VDD ± 5%
" 3 "
750 KHz ~ 800.0 MHz
+3.3 VDD ± 5%
" 3 "
Supply Voltage Code
Output Logic " High " , " 1 "
Output Logic " Low " , " 0 "
Differential Output Voltage, VOD
Differential Output Error, VOD
Output Offset Voltage, Vos
1.4 V typical ; 1.6 V max.
0.9 V min. ; 1.1 V typical.
247 mV min.; 355 mV typical ; 454 mV max. Output 1 - output 2
-50 mV min ; 50 mV max.
1.125 V min. ; 1.200 V typical ; 1.375 V max.
0 mV min. ; 3 mV typical ; 25 m V max.
Offset Magnitude Error ( △Vos )
Integrated Phase Jitter
(12 KHz to 20 MHz)
0.4 ps typical; 0.5 ps max. [ for 156.250 MHz ]
2.6 ps typical; 4 ps max. [ for 155.520 MHz ]
Period Jitter
(RMS ; Decoupling
3.0 ps typical; 5 ps max. [ for 156.250 MHz ]
20 ps typical; 30 ps max. [ for 156.250 MHz ]
4.3 ps typical. [ for 155.520 MHz
27 ps typical. [ for 155.520 MHz
]
capacitor between VDD and ground )
Period Jitter(peak-to-peak ;Decoupling
capacitor between VDD and ground )
]
38 MHz ~ 100 MHz - - - - - - - - - 65 mA max
100.01 MHz ~ 320 MHz - - - - - - - 80 mA max.
320.01 MHz ~ 640 MHz - - - - - - 90 mA max.
0.7 ns typical , 1.0 ns max.
< 24 MHz - - - - - - - - - - - - - - - - 25 mA max
24.01 MHz ~ 96 MHz - - - - - - - - 65 mA max
96.01 MHz ~ 800 MHz - - - - - - - 100 mA max..
Current Consumption (15 pF load)
Rise Time / Fall Time
1.5 ns max.
( 20%↔80% of the LVDS wave form )
( 20%↔80% of the LVDS wave form )
If non-standard , please enter the desired
Frequency Stability over
± 25 ppm
± 50 ppm
± 100 ppm
Operating Temperature Range
stability after the " C " or " I" .
For example :
Frequency Stability (1) Codes
Commercial "C" ( -10°C ~ +70°C )
A
D
B
E
C
F
" C20 " : ± 20 ppm over -10°C to +70°C
" I20 " : ± 20 ppm over -40°C to +85°C
Industrial " I" ( -40°C to +85°C )
Load
50 Ω from each output
Start-up Time
5 m sec. typical; 10 m sec. max.
50% ± 5% ( measured at 1.25V)
Duty Cycle
Drive Capability
Aging at Ta = +25°C
Control Voltage Center , Range
100 ohms between LVDS output and complimentary LVDS output.
± 3 ppm max. first year ; ± 2 ppm max. per year thereafter
+ 1.65 V , Vcon =+0.3V to +3.0V
±80 ppm ( min.) . Use " N " ( minimum ) , " M " ( maxiimum ) , " T " ( typical,±20% ) for the desired range .
Example : " 100N " represents ±100ppm ( min.) .
Frequency Deviation Range
Linearity
6% typical ; 10% max.
Slope Polarity
Modulation Bandwidth
Input Impedance
No Connection
Positive : Positive voltage for positive frequency shift
25 KHz min. ( -3dB , 0V ≤ Vcontrol ≤ 3.3V )
60 KΩ min.
2 MΩ min.
Differential LVDS and compliantary LVDS outputs .
Both outputs are disabled ( high impedance ) when pad No.2 is taken below 0.45*Vcc referenced to
ground ( threshold ) Oscillator is always On . Only buffer stage is disabled .
Disable
Enable
Tri - State Function.
on pad No. 2
Disable current : 50 uA max. ( at 0.0V ) , Disable time : 10 ns (max.)
At disabled mode , both outputs are enabled when Tri-state pad is taken above 0.45*Vcc referenced to
ground ( threshold ) ; Enable time : 10ns + one period of the output frequency (max.)
Offset
Frequency: 156.250 MHz
-62 dBc / Hz
Frequency: 155.520 MHz
-60 dBc / Hz
10 Hz
Phase Noise :
100 Hz
1 KHz
-92 dBc / Hz
-90 dBc / Hz
Tested with Vcontrol pin connected
to ground ( typical )
-120 dBc / Hz
-132 dBc / Hz
-128 dBc / Hz
-140 dBc / Hz
-150 dBc / Hz
-115 dBc / Hz
-125 dBc / Hz
-119 dBc / Hz
-120 dBc / Hz
-140 dBc / Hz
10 KHz
100 KHz
1 MHz
10 MHz
(1) Inclusive of 25ºC tolerance, operating temperature range, ±10% input voltage variation, load change, aging shock and vibration
Mercury www .mercury-crystal.com
■Taiwan : Tel (886)-2-2406-2779 / sales-tw@mercury-crystal.com ■U.S.A: Tel: (1)-909-466-0427 / sales-us@mercury-crystal.com ■China: Tel: (86)-512-5763-8100 / sales-cn@mecxtal.com
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