GL3361

3

Test Circuit

Pin Descriptions

1

16

15

14

13

12

11

10

9

2

3

4

5

6

7

8

GL3361

Vcc

68pF

0.1

Quad Coil

Mixer input

10.7MHz

51

Audio

Mute

Scan

Control

Squelch

SW

Input

10k

470k

0.01

Filter

Amp

Input

AF

Output

Filter

Amp

Output

C - § Þ

, unless noted

FLT - muRata Erie North America Type CFU455D2 or equivalent

Quadrature Coil - Toko America Type 7MC-8128Z or equivalent

No.

Symbol

Function

No.

Symbol

Function

1

OSC1

The base of the colpitts oscillator

9

AFOUT

Recovered audio output

2

OSC2

The emitter of the colpitts oscillator

10

FLTIN

Filter amplifier input

3

MIXOUT

Output of the Mixer

11

FLTOUT

Filter amplifier output

4

VCC

Supply voltage

12

SQIN

Squelch input

5

LIMIN

Input to the IF amplifier

13

SCAN

Scan control output

6

DEC1

IF decoupling

14

MUTE

Mute output

7

DEC2

IF decoupling

15

GND

Ground

8

QUAD

Quadrature tuning coil

16

MIXIN

Input of the Mixer