VCO-600A Voltage Controlled SAW Oscillator
Pin Information
Table 1. Pin Function
Pin
2,12,27
4
5,6,7,8
10
Symbol
VCC
Function
Positive Supply
Test Clock In
No Connect
Top View of Package
CLKIN 1
NC
VEE
Negative Supply
Modulation Bandwidth
Adjust
2
17
VBW
19
21
23
25
VC
Control Voltage
Output Disable
ECL Output
Complementary
ECLOutput
OD3
CLKOUT
CLKOUT
1,3,9,11,13,14,15,
16,18,20,22,24,26,28
GND
Case and Circuit
Ground
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.
Performance Characteristics
Table 2. Electrical Performance
Parameter
Center Frequency, see ordering information
Operating Temperature
Symbol
FN
TOP
IEE
VEE
APR
KV
KV
Lin
FSTAB
VOL
VOH
tR
Minimum
155
Typical
Maximum
Units
MHz
°C
mA
V
ppm
ppm/V
ppm/V
%
ppm
V
1000
+85
70
-5.5
-
-40
25
55
-5
Supply Current
Supply Voltage1
-4.5
±50
175
60
Absolute Pull Range (Vc= -0.5 to -4.5)
Positive Gain Transfer (freq vs Vc) 155.520MHz
Positive Gain Transfer (freq vs Vc) 622.080MHz
Linearity
-
350
135
±3
±150
-
700
290
Frequency Stability, -40 to 85 wrt 25°C
Output Level Low2
-1.95
-0.98
100
100
-50
45
8
-
VEE
-
-55
-
-1.63
-0.75
400
Output Level High2
-
V
pS
pS
dB
Output Rise Time3
250
250
-60
49/51
10
500
-
-
-
-
Output Fall Time3
tF
400
Spurious Suppression
Data Symmetry
Control Voltage Input Impedance
Control Voltage Modulation Bandwidth4
Control Voltage Range
Output Current
Storage Temperature
Soldering Temp./Time
SYM
Zc
BW
VC
IOUT
TS
TLS
55
12
-
VCC
20
125
240/10
%
KΩ
kHz
V
mA
°C
°C/S
1. The VCO-600A may be configured for PECL operation. All outputs and inputs including VC are referenced to Vcc
2. Output Levels are standard 10K ECL and are fully 100K ECL compatible.
3. Transition times are measured from 20% to 80% of a full 10K ECL level swing.
4. The modulation bandwidth is a function of nominal center frequency and may be adjusted down through the use of an external capacitor on pin 17.
Please see Figure 1 and Figure 2 along with Notes 1, 2 and 3.
Table 3. Typical Single Side-Band Phase Noise (dBc/Hz)
Offset from Carrier
100 Hz
1 kHz
10 kHz
100 kHz
1 MHz
VCO600A 622.080
-50
-80
-110
-130
-145
Vectron International 267 Lowell Rd, Hudson NH 03051-4916
Tel:1-88-VECTRON-1
e-mail vectron@vectron.com
2
VECTRON [ Vectron International, Inc ]
