Gennum Corporation GO1515-CTA Datasheet

FEATURES

• generates 1.485GHz or 1.485/1.001GHz signal for
HD-LINX™ ICs

• low current consumption

•50Ω output impedance

• operates from a single 5V supply

• 8 pin tape on reel

APPLICATIONS

VCO for the following HD-LINX™ ICs: GS1515, GS1522,
GS1540, GS1545.

ORDERING INFORMATION

PART NUMBER PACKAGE TEMPERATURE

GO1515 - CTA 8 pin tape on reel 0°C to 70°C

™

HD-LINX

GO1515

Voltage Controlled Oscillator

DATA SHEET

DESCRIPTION

The GO1515 is a self contained, miniature Voltage
Controlled Oscillator (VCO) that is used in conjunction with
Gennum’s HD-LINX™ ICs. It produces a clean 1.485GHz
reference clock signal for such devices as the GS1515
HDTV Reclocker and other HD-LINX™ devices. The control
voltage range is from 3.10 volts to 4.65 volts and is derived
from the on-chip PLLs. The GO1515 frequency can be
pulled approximately 16MHz for every one volt of control.

The output level is approximately 1.0dBm with low spurious

and noise content. It is designed to drive 50Ω strip lines.

The GO1515 VCO is used with the following HD-LINX™ ICs;
GS1515, GS1522, GS1540, GS1545 and is ordered as a
separate item. The VCO requires a single 5V supply and
draws a maximum of 15mA of current. It is packaged in a
miniature 8-pin proprietary surface mount package and
operates over the normal commercial temperature range of
0°C to +70°C.

GO1515

3.3pF

V

CTR

OSCILLATOR CIRCUIT

GND

BLOCK DIAGRAM

V

CC

1000pF47pF

STRIPLINESTRIPLINE

2pF

OUT

Revision Date: March 2000 Document No. 522 - 40 - 02

GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3

Tel. [phone] Fax. [phone] E-mail: [e-mail]

www.gennum.com

ELECTRICAL CHARACTERISTICS

VS = 5.0V ±0.25V, Temperature = 0°C to 70°C unless otherwise specified.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

Supply Current

Control Voltage Range V

Control Voltage Sensitivity df/dV 11 16 21 MHz/V

GO1515

Operating Frequency
Range

Output Signal Level V

Signal to Noise Ratio S/N Signal Level: 1kHz ±8kHz

Carrier to Noise Ratio C/N 25kHz Separation, 1kHz Bandwidth 74 - - dBc

Pushing Figure V

Pulling Figure VSWR = 2.0 for all phase, ref: 50

Temperature Stability T

Spurious Response ---10dBc

Output Impedance Z

PIN CONNECTIONS

ƒ

COEF

CC

Ι

S

CTR

VCO

OUT

O

4.75 5.0 5.25 V

--15mA

+3.1 - +4.65 V

1483.5 - 1485.5 MHz

-2 1 +4 dBm

40 - - dB

Deviation = 0.3~3.0kHz

= 5.0V ±0.25V, ref: VS = 5.0V - ±500 - kHz

S

Ω

- ±1000 - kHz

0°C to 70°C, ref. = 25°C - - ±3 MHz

-50-

Ω

NC GND O/P

765

GO

8

4

GNDGND

1515

TOP VIEW

132

V

NOTE: Pin numbers are arbitrary.
There are no pin markings on the device itself

PIN DESCRIPTIONS

NUMBER SYMBOL TYPE DESCRIPTION

2, 4, 6, 8 GND - Most negative power supply connections.

1V

3V

CTR

CC

5 O/P O VCO signal output.

7 NC - No connection.

I Control voltage for the VCO.

- Most positive power supply connection.

CTR

GND V

CC

522 - 40 - 02

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