MB511

2

D

CQ

Q

D

CQ

Q

D

CQ

Q

IN

IN

OUT

S1

S2

Divide

Ratio

Controller

Figure 1. MB511 Block Diagram

FUNCTION TABLE

S1

S2

Divide Ratio

Operating Frequency

L

L

Not used

—

L

H

1

250MHz

H

L

2

500MHz

H

H

8

1000MHz

L = OPEN

PIN DESCRIPTIONS

Pin Number

Symbol

I/O

Descriptions

1

IN

I

Input. The connection with VCO should be an AC connection.

2

–

Power supply voltage input.

3

NC

–

No connection.

4

OUT

O

Output. Termination resistor is necessary due to emitter follower output.

5

GND

–

Ground.

6

S2

I

Divide ratio control input.

7

S1

I

Divide ratio control input.

8

IN

I

Complementary Input.