AZG489

PECL Video Cable Driver

1630 S. STAPLEY DR., SUITE 127

• MESA, ARIZONA 85204 • USA • (480) 962-5881 • FAX (480) 890-2541

www.azmicrotek.com

ARIZONA MICROTEK, INC.

FEATURES

•

720 Mb/s Typical Data Rate

•

1.6V Typical Output Swing

•

Independent Outputs Operate in Phase

•

5V±10% Supply Voltage

DESCRIPTION

The AZG489 is a multiple output cable driver specifically designed to drive coaxial video cables. The device is

especially useful in Digital Video Broadcasting applications. Each output has its own output stage and thus each is

isolated from the other outputs.

The driver has a voltage gain of approximately 40 and produces an output swing of 1.6 volts, twice as large as a

standard PECL output. When driving a coaxial cable, proper termination is required at both ends of the cable to

minimize reflections. The 1.6V output signal allows for termination at both ends of the cable, while providing an

800mV signal at the receiving end of the cable.

The driver accepts a standard differential PECL input and can be powered with a 5.0V supply. Under open input

conditions internal input clamps will force all outputs HIGH.

Additional power supply filtering is required because of the large amount of in-phase output current. A

capacitor (0.1

μF minimum) must bypass V

Figure 1 for further information.

NOTE: The specifications in the PECL table are valid when thermal equilibrium is established. The maximum

junction temperature is 125

°C. Thermal management may be required in some applications to ensure the junction

temperature does not exceed that value.

LOGIC DIAGRAM AND PINOUT ASSIGNMENT

PIN DESCRIPTION

PIN

FUNCTION

D, D

¯

PECL Data Inputs

Q0, Q1, Q2, Q3

Positive Supply

Negative Supply

8

5

6

7

4

3

2

1

D

Q0

Q3

Q2

D

Q1

V

CC

V

EE

PACKAGE AVAILABILITY

PACKAGE

PART NUMBER

MARKING

NOTES

SOIC 8

AZG489D

AZG489

<Date Code>

1,2

1

Add R1 at end of part number for 7 inch (1K parts), R2 for 13 inch (2.5K parts)

Tape & Reel.

2

Date Code “YWW” on underside of part.