TA8155FG/FNG

2006-04-12

6

(4) Microphone amplifier

Current source of 5.5µA is operated except MIC−REC

mode, because bias is applied to the same output

voltage as output voltage of microphone amplifier

in operation (Fig.3).

(pin(23)) by diode, as internal circuit of termial

explanation.

terminal (pin(1)), in case that the terminal is

on−mode and except REC mode.

Characteristic

Symbol

Rating

Unit

4.5

Supply voltage

4.5

V

TA8155FG

400

Power dissipation

TA8155FNG

500

mW

Operating Temperature

−25~75

°C

Storage temperature

−55~150

°C

(Note) Derated above Ta = 25°C in the proportion of 3.2mW / °C for TA8155FG, and of 4mW / °C for

TA8155FNG.

Fig.2 Reducing a pop sound of

mode switchover (1).

Fig.3 Reducing a pop sound of

mode switchover (2).