VL-821
CMOS Crystal Oscillator Previous Vectron Model VCS3
VL-821
Description
Vectron’s VL-821 Crystal Oscillator (XO) is a quartz stabilized square wave generator with a CMOS output, operating off either a 1.8, 2.5, or 3.3
volt supply. The VL-821 utilizes a high performance, low frequency quartz resonator followed by a custom ASIC to synthesize the output frequency.
Features
• • • • • • •
•
Applications
• • • • • • SONET/SDH/DWDM Ethernet, GE, SynchE Storage Area Networking Digital Video Broadband Access Microprocessors/DSP/FPGA
Quick delivery CMOS Output 3.2mm x 2.5mm x 1.2mm Output frequencies to 200.00 MHz Tri-state output for the board test and debug -10/70°C or -40/85°C operating temperature Gold over nickel contact pads Product is compliant to RoHS directive and fully compatible with lead free assembly
Block Diagram
VDD
Crystal
Output
Osc
PLL
E/D
Gnd
Page1
Vectron International • 267 Lowell Road, Hudson, NH 03051 • Tel: 1-88-VECTRON-1 • http://www.vectron.com
Performance Specifications
Table 1. Electrical Performance, 3.3V Option Parameter
Operating Supply Voltage
1
Symbol
VDD IDD
Min
Supply 2.97 -0.05
Typical
3.3
Maximum
3.63 5.0 10 15 20 25
Units
V V mA
Absolute Maximum Operating Voltage Supply Current, Output Enabled 10MHz Duty Cycle3 Output Enable/Disable Output Enable Output Disable Start-Up Time Operating Temp, (Ordering Option)
1] 2] 3] 4] 5]
5
VOH VOL IOH IOL tR/tF SYM
0.9*VDD 0.1*VDD 8 8 3 2 45 Enable/Disable 50 55
V V mA mA ns ns %
VIH VIL tSU TOP
0.7*VDD 0.3V*DD 2 -10/70 or -40/85
V V ms °C
A 0.01 uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground). VDD supply ramp should be
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