VCO600A Vectron International, VCO600A Datasheet - Page 3

• Manufacturer Part Number: VCO600A
• Description: Frequency Range (MHz) = 155 - 800 ;; Output = Ecl or Pecl ;; Package (mm) = 18.5 X 7.5 X 3.6 28 Pin Soic ;; Features = Low-frequency Clock Through Feature
• Manufacturer: Vectron International

VCO-600A Voltage Controlled SAW Oscillator
1. By setting OD low, a test signal may be applied at CLKIN and fed through the VCO-600A to both the CLKOUT and CLKOUT to facilitate on board testing. The test
signal input applied at CLKIN may be either an ECL or sinewave input (up to 1Vpp, AC coupled). CLKIN is biased internally to VBB (Vcc-1.3V)
2. An optional capacitor to ground can be placed on VBW to reduce the modulation bandwidth for narrow bandwidth phase-lock loop applications. The
modulation bandwidth will be approximately 1/(12000*C) Hz, where C is equal to the capacitance in Farads. If the optional capacitor is not utilized, VBW
becomes a no connect (NC) and the modulation bandwidth will be approximately equal to the nominal device frequency 1200.
3. By setting OD low, the outputs are disabled and CLKOUT is held high while CLKOUT is held low. The threshold for OD is 1.4V above VEE. OD should
not be driven above mid supply and during normal operation, should be left floating (use with an open collector or 3-State gate for interfacing with
standard logic). If the OD feature is used during normal operation, then CLKIN should be tied through 10K
the CLKOUT outputs
Vectron International 267 Lowell Road, Hudson, NH 03051
0.5 to 4.5V
-4.5 to -0.5V
19
21
4
19
21
4
2,12,27
10
Control Voltage
Output Disable
Test Clock In
Control Voltage
Output Disable
Test Clock In
V
V
EE
CC
Figure 1. PECL Operation
Figure 2. ECL Operation
Ground
Ground
VCO-600A
VCO-600A
V
V
1,3,9,11,13,14,15,16,18,20,22,24,26,28
1,3,9,11,13,14,15,16,18,20,22,24,26,28
Tel:1-88-VECTRON-1
CC
EE
3
+5 V
2,12,27
-5 V
10
OUT
OUT
OUT
OUT
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+3V, 50ohms
17
-2V, 50ohms
17
to GND to avoid any possibility of chatter on
Optional
Capacitor
Reduces
Bandwidth
Optional
Capacitor
Reduces
Bandwidth
23
25
23
25