746

Audio ICs

1.5V signal sensor

BA3714F

The BA3714F is a signal sensor consisting of a sensor circuit which detects the presence of an input signal, a logic circuit

which controls an output drive circuit based on the input signal, and an output drive circuit. The signal sensor circuit em-

ploys the dual-wave rectified current method for excellent response.

Drive outputs include two systems OUT1 and OUT which are controlled by the logic block. These systems can be com-

bined to enable a wide range of designs.

FApplications

Tape end sensors for 1.5 to 3V headphone stereos

Mute and song selection sensors

FFeatures

to 4.5V)

2) Minimal attached components.

3) Uses dual rectified current method for excellent sig-

nal response.

5) When used for a tape end sensor, can also be used

with mechanical auto-off.

6) SOP 8-pin package allows space conservation on

the board.

FAbsolute maximum ratings (Ta = 25_C)

FRecommended operating conditions (Ta = 25_C)