TA31275FN/ TA31275FNG

03-01-23

6

6.

Battery-Saving (BS) Function and Lo Switch LOBS Function

The IC incorporates a battery-saving function and a Lo switch function. These function offer the

following selection.

FM Mode (FM/AM pin: L)

BS Pin/LOBS Pin

Circuit Status in the IC

IC Current

Dissipation

(at no signal)

H/H

Circuits in operation:

･

×8 circuit

･Mixer

･RF amp

･Comparator

･IF amp

･Detector circuit

･RSSI

･Comparator capacitor charger circuit

5.8 mA (typ.)

H/L

×8 circuit only halted, Frequency set by External circuit can be

used as-is.

3.5 mA (typ.)

L/H

×8 circuit only in operation

2.6 mA (typ.)

L/L

All circuits

0 mA (typ.)

AM Mode (FM/AM pin: H)

BS Pin/LOBS Pin

Circuit Status in the IC

IC Current

Dissipation

(at no signal)

H/H

Circuits in operation:

･

×8 circuit

･Mixer

･RF amp

･Comparator

･IF amp

･RSSI

･Comparator capacitor charger circuit

5.4 mA (typ.)

H/L

×8 circuit only halted, Frequency set by External circuit can be

used as-is.

3.1 mA (typ.)

L/H

×8 circuit only in operation

2.6 mA (typ.)

L/L

All circuits

0 mA (typ.)