TA31275FN/ TA31275FNG

03-01-23

2

Pin Description

(the values of resistor and capacitor in the internal equivalent circuit are typical.)

Pin No.

Pin Name

Function

Internal Equivalent Circuit

1

OSC IN

Local oscillator input pin.

2

Local’ power supply pin



3

LOBS

Lo switch pin.

H:

×8 circuit pin.

L: Through pass

4

MIX OUT

Mixer output pin.

The output impedance of the pin is typically

330

Ω.

5

Power supply pin 1.



6

IF IN

IF amp input pin.

7

IF DEC

IF amp input pin.

Used as a bias coupling pin.

8

GND2

GND pin 2.



9

BS

Battery saving pin.

2 pF

1

70 k

Ω

3

245

Ω

4

6

7

3 k

Ω

40 k

Ω

9