LINEAR INTEGRATED CIRCUIT
Iline=15mA at V LN=4V
R1=620 Ω and R9=20 Ω
Typical current Ip available from Vcc peripheral circuitry with Vcc>=2.2V.
curve (a) is valid when the receiving amplifier is not driven or when MUTE =LOW(UTC TEA1062 is
HIGH) .curve(b) is valid when MUTE=HIGH(UTC TEA1062 is LOW) and the receiving amplifier is
driven;Vo(rms)=150mV,RL=150Ω.The supply possibilities can be increased simply by setting the voltage drop
over the circuit VLN to a high value by means of resistor RVA connected between REG and SLPE.
Fig. 10 Alternative microphone arrangement
(a) Magnetic or dynamic microphone. The resistor marked(1) may be connected to decrease the terminating
(b) Electret microphone.
(c) Piezoelectric microphone.
UTC UNISONIC TECHNOLOGIES CO., LTD. 10