GD
Applications
●
●
LVDS Differential
F group
0.5 ps
W group
4.0 ps
Min.
Thru-Hole
SMD
3.3V
750KHz
Max.
800MHz
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
Technology
Output Logic
Available Frequency Range
Supply Voltage V
DD
Supply Voltage Code
Output Logic " High " , " 1 "
Output Logic " Low " , " 0 "
Differential Output Voltage, V
OD
Differential Output Error, V
OD
Output Offset Voltage, Vos
Offset Magnitude Error (
△Vos
)
Integrated Phase Jitter
(12 KHz to 20 MHz)
Period Jitter
(RMS ; Decoupling
capacitor between V
DD
and ground )
Period Jitter(peak-to-peak ;Decoupling
capacitor between V
DD
and ground )
Current Consumption (15 pF load)
"
GDF
" series
High Q fundamental crystal +
low jitter multiplier circuit
LVDS
38.0 MHz ~ 640.0 MHz
+3.3 V
DD
± 5%
"3"
1.4 V typical ; 1.6 V max.
0.9 V min. ; 1.1 V typical.
"
GDW
" series
High Q fundamental crystal +
multiplier circuit
750 KHz ~ 800.0 MHz
+3.3 V
DD
± 5%
"3"
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.
0.4 ps typical; 0.5 ps max. [ for 156.250 MHz ]
3.0 ps typical; 5 ps max. [ for 156.250 MHz ]
20 ps typical; 30 ps max. [ for 156.250 MHz ]
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.
( 20%↔80% of the LVDS wave form )
Frequency Stability over
± 25 ppm
± 50 ppm
Operating Temperature Range
Commercial "C" ( -10°C
~ +70°C
)
Industrial "
I
" (
-40°C to +85°C
)
A
D
B
E
2.6 ps typical; 4 ps max. [ for 155.520 MHz ]
4.3 ps typical. [ for 155.520 MHz ]
27 ps typical. [ for 155.520 MHz ]
< 24 MHz - - - - - - - - - - - - - - - - 25 mA max
24.01 MHz ~ 96 MHz - - - - - - - - 65 mA max
96.01 MHz ~ 800 MHz - - - - - - - 100 mA max..
1.5 ns max.
( 20%↔80% of the LVDS wave form )
± 100 ppm
C
F
If non-standard , please enter the desired
stability after the " C " or "
I
" .
For example :
" C20 " : ± 20 ppm over -10°C to +70°C
"
I20
" : ± 20 ppm over -40°C to +85°C
Rise Time / Fall Time
Frequency Stability
(1)
Codes
Load
Start-up Time
Duty Cycle
Drive Capability
Aging at Ta = +25°C
Control Voltage Center , Range
Voltage Control
Characteristics
Frequency Deviation Range
Linearity
Slope Polarity
Modulation Bandwidth
Input Impedance
No Connection
Tri - State Function.
on pad No. 2
Disable
50
Ω
from each output
5 m sec. typical; 10 m sec. max.
50% ± 5% ( measured at 1.25V)
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.) .
6% typical ; 10% max.
Positive : Positive voltage for positive frequency shift
25 KHz min. ( -3dB , 0V
≤
Vcontrol
≤
3.3V )
60 KΩ 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 current : 50 uA max. ( at 0.0V ) , Disable time : 10 ns (max.)
Enable
At disabled mode , both outputs are enabled when Tri-state pad is taken above 0.45*Vcc referenced to
ground ( threshold ) ;
Offset
10 Hz
100 Hz
1 KHz
10 KHz
100 KHz
1 MHz
10 MHz
Enable time : 10ns + one period of the output frequency (max.)
Frequency: 156.250 MHz
-62 dBc / Hz
-92 dBc / Hz
-120 dBc / Hz
-132 dBc / Hz
-128 dBc / Hz
-140 dBc / Hz
-150 dBc / Hz
Frequency: 155.520 MHz
-60 dBc / Hz
-90 dBc / Hz
-115 dBc / Hz
-125 dBc / Hz
-119 dBc / Hz
-120 dBc / Hz
-140 dBc / Hz
2 MΩ min.
Phase Noise :
Tested with Vcontrol pin connected
to ground ( typical )
(1)
Pad 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
GP_
[ LVPECL Differential output ]
Part Number Format and Example
[1]
[2]
[3]
[4]
GD_
[ LVDS Differential output ]
[5]
[6]
[7]
Supply
Voltage
Holder Type
Output Wave
G
Frequency
Stability
–
–
–
Pulling
Range
Range
Code
–
–
–
Center
Frequency
(1)
Examples
(2)
5
3
GPF14
GV576
G
B
D
100
80
N
T
35.328
27.000
Ex (1) :
3GPF14GB - 100N - 155.520
[ +3.3V , G_ 14 type ( F characteristics , PECL output ) , RoHS , ±50ppm( -10°C to 70°C) , pulling : ±100 ppm ( min.) , 155.520 MHz ]
Ex (1) :
3GWD576D - 80T - 125.000
[ +3.3V , G_576 type ( W characteristics , LVDS output ) , ±25ppm ( -40°C to 85°C) , pulling : ±80 ppm ( typical ) , 125.000 MHz ]
[ 1 ] Supply voltage , "
3
" for +3.3V
[ 2 ] Holder type and output wave [ "
P
" for PECL differential , "
D
" for LVDS differential ]
[3]
Please add "
G
" after the " type code " for RoHS compliant equivalent ( Does not apply to
G_576
series ) .
"
A
" ± 25ppm ; "
B
" ± 50ppm ; "
C
" ± 100ppm ;
-10°C ~ 70 °C
If non-standard please enter the desired stability after "
C
" , for example "
C15
" : represents ±15ppm over -10 to +70°C
[4]
"
D
" ± 25ppm ; "
E
" ± 50ppm ; "
F
" ± 100ppm ;
-40°C ~ 85 °C
If non-standard please enter the desired stability after "
I
" , for example "
I20
" : represents ±20ppm over -40 to +85°C
3.3V
[5]
Freqency Pulling Range
5.0V
[ 6 ] Pulling Range Code
[7]
Center Frequency in MHz
From ±70ppm ~ ±200ppm , control Voltage range : 0.5V ~ 4.5V ; control voltage center : ± 2.5 V
"
M
" stands for maximum ; "
N
" stands for minimum ; "
T
" stands for typical ( tolerance is ± 20% )
From ±30ppm ~ ±150ppm , control Voltage range : 0.3V ~ 3.0 ; control voltage center : ± 1.65 V
PECL Square Wave Test Circuit
LVDS Square Wave Test Circuit
PECL Square Wave Output Wave Form
LVDS Square Wave Output Wave Form
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
Embedded System
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