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EG-2121CA (Crystal Oscillator Low-Jitter SAW Oscillator)

  • Frequency range
    53.125MHz to 700MHz
  • Supply voltage
    2.5V Typ.
  • Output
    LV-PECL or LVDS or HCSL
  • Function
    Output enable (OE)
  • External dimensions
    7.0 × 5.0 × 1.2mm
  • Very low jitter and low phase noise by SAW unit.

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RoHS Compliant

EG-2121CA
EG-2121CA

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Specifications

LV-PECL Output

Item Symbol LV-PECL Conditions/Remarks
Output frequency range f0 53.125MHz to 500MHz Please contact us for inquiries regarding available frequencies.
Supply voltage VCC 2.5V ± 0.125V
Storage temperature T_stg -40°C to +100°C Store as bare product.
Operating temperature T_use P : 0°C to +70°C
R : -5°C to +85°C
S : -20°C to +70°C
Frequency tolerance f_tol G : ± 50 × 10-6
H : ±100 × 10-6
Current consumption ICC 80mA Max. OE = VCC , L_ECL = 50Ω
Disable current I_dis 20mA Max. OE = GND
Symmetry SYM P : 40% to 60%
( f0 > 350MHz )		 at outputs crossing point
P : 45% to 55%
( f0 ≦ 350MHz )
D : 48% to 52%
( f0 ≦ 175MHz )
Output voltage VOH 1.55V Typ. DC characteristics
VCC - 1.025V to VCC - 0.88V
VOL 0.8V Typ.
VCC - 1.81V to VCC - 1.62V
Output load condition
(ECL)		 L_ECL 50Ω Terminated to VCC - 2.0V
Input voltage VIH 70% VCC Min. OE terminal
VIL 30% VCC Max.
Rise time / Fall time tr / tf 400ps Max. Between 20% and 80% of ( VOH - VOL)
Start-up time t_str 10ms Max. Time at minimum supply voltage to be 0s
Phase Jitter tPJ 0.8ps Max. f0 < 100MHz Offset frequency:
12kHz to 20MHz
0.5ps Max. 100MHz ≦ f0 < 200MHz
0.3ps Max. 200MHz ≦ f0
Frequency aging f_aging ± 10 × 10-6 / year Max. +25°C , First year , VCC = 2.5V

LVDS Output

Item Symbol LVDS Conditions/Remarks
Output frequency range f0 53.125MHz to 700MHz Please contact us for inquiries regarding available frequencies.
Supply voltage VCC 2.5V ± 0.125V
Storage temperature T_stg -40°C to +100°C Store as bare product.
Operating temperature T_use P : 0°C to +70°C
R : -5°C to +85°C
S : -20°C to +70°C
Frequency tolerance f_tol G : ± 50 × 10-6
H : ±100 × 10-6
Current consumption ICC 30mA Max. OE = VCC , L_LVDS = 100Ω
Disable current I_dis 20mA Max. OE = GND
Symmetry SYM L : 40% to 60%
( f0 > 350MHz )		 at outputs crossing point
L : 45% to 55%
( f0 ≦ 350MHz )
V : 48% to 52%
( f0 ≦ 175MHz )
Output voltage VOD 350mV Typ.
247mV to 454mV		 VOD1 , VOD2 DC characteristics
dVOD 50mV Max. dVOD = | VOD1 - VOD2 |
VOS 1.25V Typ.
1.125V to 1.375V		 VOS1 , VOS2
dVOS 150mV Max. dVOS = | VOS1 - VOS2 |
Output load condition
(LVDS)		 L_LVDS 100Ω Connected between OUT to OUT
Input voltage VIH 70% VCC Min. OE terminal
VIL 30% VCC Max.
Rise time / Fall time tr / tf 400ps Max. Between 20% and 80% of Differential Output peek to peek voltage
Start-up time t_str 10ms Max. Time at minimum supply voltage to be 0s
Phase Jitter tPJ 0.8ps Max. f0 < 100MHz Offset frequency:
12kHz to 20MHz
0.5ps Max. 100MHz ≦ f0 < 200MHz
0.3ps Max. 200MHz ≦ f0
Frequency aging f_aging ± 10 × 10-6 / year Max. +25°C , First year , VCC = 2.5V

HCSL Output

Item Symbol HCSL Conditions/Remarks
Output frequency range f0 100MHz to 350MHz Please contact us for inquiries regarding available frequencies.
Supply voltage VCC 2.5V ± 0.125V
Storage temperature T_stg -40°C to +125°C Store as bare product.
Operating temperature T_use P : 0°C to +70°C ,
R : -5°C to +85°C ,
S : -20°C to +70°C
Frequency tolerance f_tol G : ± 50 × 10-6
H : ±100 × 10-6
Current consumption ICC 80mA Max. OE = VCC , L_HCSL = 50Ω
Disable current I_dis 20mA Max. OE = GND
Symmetry SYM 45% to 55% at outputs crossing point
Output voltage VOH 0.75V Typ. DC characteristics
VOL -0.3V Typ.
Output load condition
(HCSL)		 L_HCSL 50Ω Terminated to GND
Input voltage VIH 70% VCC Min. OE terminal
VIL 30% VCC Max.
Rise time / Fall time tr / tf 500ps Max. Between 0.175V and 0.525V of output
Start-up time t_str 10ms Max. Time at minimum supply voltage to be 0s
Phase Jitter tPJ 0.8ps Max. f0 < 100MHz Offset frequency:
12kHz to 20MHz
0.5ps Max. 100MHz ≦ f0 < 200MHz
0.3ps Max. 200MHz ≦ f0
Frequency aging f_aging ± 10 × 10-6 / year Max. +25°C , First year , VCC = 2.5V

Jitter

Item Symbol Specifications Remarks
Jitter * tDJ 0.2ps Typ. Deterministic Jitter
tRJ 3ps Typ. Random Jitter
tRMS 3ps Typ. σ (RMS of total distribution)
tp-p 25ps Typ. Peak to Peak
tacc 4ps Typ. Accumulated Jitter(σ) n=2 to 50000cycles

* Based on DTS-2075 Digital timing system made from WAVECREST with jitter analysis software VISI6. : Differential LV-PECL, LVDS output
* Based on SIA-3100C signal integrity analyzer made from WAVECREST. : HCSL output

External dimensions

dimension
(Unit: mm)

OE pin = HIGH : Specified frequency output.
OE pin = LOW : Output is high impedance

Footprint (Recommended)

footprint
(Unit: mm)

To maintain stable operation, provide a 0.01uF to 0.1uF by-pass capacitor at a location as near as possible to the power source terminal of the crystal product (between Vcc - GND).

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