1 - PIN DESCRIPTION (continued)

1.2 - Pin List

Pin

Name

Description

Ext. Connection and

Suppl. Information

1

NPRGEN

Serial Data Enable

2

PRGCLK

Serial Data Clock

3

PRGD

Serial Data Input

4

NTXEN

Receive-Transmit Switch

5

LOCK

VCO Lock Detect-all 3 PLL

6

I

I - Transmit Quadrature Input

7

NI

I - Transmit Quadrature Input

STB4395 only

8

NQ

Q-Transmit Quadrature Input

STB4395 only

9

Q

Q-Transmit Quadrature Input

STB4395 only

7

REFIQ

IQ Reference Quadrature Transmit Input

STB4395A only

8

Q

Q-Transmit Quadrature Input

STB4395A only

9

FN

Forces Data Slicer Reference Time Constant To fast

STB4395A only

10

EN

Power Down all functions except buffer

11

VNOSC

Negative Power Supply all VCO ’s

12

SYNCLK

Synthesizer Clock Input

f = 14.4MHz A.C. coupled

13

VRO

PSU Regulated Negative Input for TX IF oscillator and pump circuit

14

VCOO

TX oscillator tank circuit

15

NVCOO

TX Oscillator Tank Circuit

16

FLTRO

Loop Filter for TX PLL

17

VPO

Positive Battery Supply for TX oscillator

18

DO

Receive Data Output

19

SLTC

Slicer Time Constant Capacitor

C= 33nF

20

FSH

Data Slicer Time Constant Setting

21

FLTRS

Loop Filter for channel PLL

22

VRS

Regulated Negative Supply for channel oscillator and pump circuit

23

VPS1

Positive Battery Input for channel oscillator and pump circuit

24

NVCOS

Channel Oscillator Tank Input

650 to 850MHz

25

VCOS

Channel Oscillator Tank Input

650 to 850MHz

26

VPS2

Positive Battery Supply Input for channel oscillator and pump circuit

27

BRF3

Bit Rate Filter3

28

BRF1

Bit Rate Filter1

29

DISCI

FM Discriminator Tank Circuit

30

DISCO

FM Discriminator Tank Circuit

31

BRF2

Bit Rate Filter 2

32

VPI

Positive Battery Supply for RXoscillator and pump circuit

33

FLTRI

Loop Filter for RX oscillator

34

NVCOI

RX Oscillator Tank Circuit

35

VCOI

RX Oscillator Tank Circuit

36

VRI

Regulated Negative Supply for RX oscillator and pump circuit

37

RSSI

RSSI OUTPUT

38

VRIF

Regulated Negative Supply Output for RX sections

39

NDEC

RX IF2 Decoupling

40

NIF2I

RX IF2 Filter Input

41

IF2I

RX IF2 Filter Input

42

DEC

RX IF2 Decoupling

43

IF2O

RX IF2 Filter Output

44

NIF2O

RX IF2 Filter Output

45

VPIF

Positive Battery Supply Input for RX sections

STB4395

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