VCO-600A Voltage Controlled SAW Oscillator
+5 V
2,12,27
+3V, 50ohms
VCC
VCO-600A
0.5 to 4.5V
23
25
19
OUT
OUT
Control Voltage
21
Output Disable
Test Clock In
Optional
Capacitor
Reduces
4
17
VEE
Ground
Bandwidth
10
1,3,9,11,13,14,15,16,18,20,22,24,26,28
Figure 1. PECL Operation
-5 V
-2V, 50ohms
10
VEE
VCO-600A
23
25
-4.5 to -0.5V
19
21
OUT
Control Voltage
OUT
Output Disable
Test Clock In
Optional
Capacitor
Reduces
4
17
VCC
Ground
Bandwidth
2,12,27
1,3,9,11,13,14,15,16,18,20,22,24,26,28
Figure 2. ECL Operation
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 Low while CLKOUT is held High. 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 10KΩ to GND to avoid any possibility of chatter on
the CLKOUT outputs
Vectron International 267 Lowell Rd, Hudson NH 03051-4916
Tel:1-88-VECTRON-1
e-mail vectron@vectron.com
3
VECTRON [ Vectron International, Inc ]
