VC-800 Voltage Controlled Crystal Oscillator

Vectron International 267 Lowell Road, Hudson NH 03051

Tel:1-88-VECTRON-1

e-mail: vectron@vectron.com

Performance Characteristics

Table 1. Electrical Performance

Parameter

Symbol

Min

Typical

Maximum

Units

Frequency

1.544

75.000

MHz

Supply Voltage

1

(+3.3 V)

(+5.0 V)

2.97

4.5

3.3

5.0

3.63

5.5

V

Supply Current

12

25

mA

Output Logic Levels

Output Logic High

2

Output Logic Low

2

V

V

Transition Times

Rise Time

2

Fall Time

2

1

1

3

3

ns

ns

Tristate

Output Enabled

Output Disabled

2.5

0.7

V

V

Symmetry or Duty Cycle

3

(ordering option)

SYM

40

50

60

%

Operating temperature (ordering option)

0/70 or –40/85

°C

Test Conditions for APR (+5V option)

0.5

4.5

V

Test Conditions for APR (+3.3V option)

0.3

3.0

V

Absolute Pull Range (ordering option)

APR

±50

±70

±80

ppm

Gain Transfer (See Figure 3)

Positive

ppm/V

Control Voltage Leakage Current

±1

uA

Control Voltage Bandwidth (-3dB)

BW

10

kHz

Phase Noise

10 Hz Offset

100 Hz Offset

1 KHz Offset

10 KHz Offset

100 KHz Offset

1 MHz Offset

-58

-88

-118

-143

-151

-151

dBc/Hz

dBc/Hz

dBc/Hz

dBc/Hz

dBc/Hz

dBc/Hz

Package Size

5.0 x 3.2 x 1.5

mm

1. A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended.

2. Figure 1 defines these parameters. Figure 2 illustrates the equivalent five gate TTL load and operating conditions under which

these parameters are tested and specified.

3. Symmetry is defined as (ON TIME/PERIOD with Vs= 1.4 V for TTL and Vs=2.5 V for CMOS, 5 volt operation, and Vs=1.65V

for 3.3 Volt operation.

Figure 1. Output Waveform

Figure 2. Typical Output Test Conditions (25

±5°C)

80

%

Vs

20

%

t

F

t

R

Period

On Time

+

-

+

-

I

C

V

C

4

3

µF

.01

µF

15pF

25

6

1

I

DD

650

Ω

V

DD

1.8k