4 of 13

NOT

RECOMMENDED

FOR

NEW

DESIGNS

32467 - 0

GS9015B PIN DESCRIPTIONS

PIN NO.

SYMBOL

TYPE

DESCRIPTION

Power Supply. Most negative power supply connection.

Power Supply. Most negative power supply connection.

Power Supply. Most negative power supply connection.

Power Supply. Most negative power supply connection.

5,6

DDI/DDI

Input

Direct Data Inputs (true and inverse). Pseudo-ECL, differential serial data inputs.

They may be

Power Supply. Most positive power supply connection. (Phase Detector, Carrier Detect).

8, 9

Power Supply. Most negative power supply connection.

10

ƒ/2 EN

Input

ƒ/2 Enable-TTL compatible input used to enable the divide by 2 function.

11

Power Supply. Most negative power supply connection. (VCO, MUX, Standard Select)

12

LOOP FILT

Loop Filter. Node for connecting the loop filter components.

13

Input

VCO Resistor 0. Analog current input used to set the centre frequency of the VCO when the two

14

Input

VCO Resistor 1. Analog current input used to set the centre frequency of the VCO when Standard

15

Input

VCO Resistor 2. Analog current input used to set the centre frequency of the VCO when Standard

16

Power Supply. Most negative power supply connection.

17

R

VCO3

Input

VCO Resistor 3. Analog current input used to set the centre frequency of the VCO when the two

Standard Select bits (pins 20 and 21) are set HIGH. A resistor is connected from this pin to V

EE

.

Fig. 2 GS9015B Pin Connections

SD0

SD0

SC0

SC0

SS1

SS0

CD

DDI

DDI

VCC1

VEE1

VEE1

VEE1

VEE1

VEE1 VEE1 VEE1 VEE2 VCC3

GS9015B

TOP VIEW

LOOP RVCO0 RVCO1 RVCO2 VEE3

RVCO3 VCC2

FILT

25

24

23

22

21

20

19

5

6

7

8

9

10

11

12

13

14

15

16

17

18

4

3

2

28

27

26

ƒ/2 EN

VEE3