1.5V signal sensor
Description
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 employs the dual-wave rectified current method for excellent response.
The outputs TE of Pin 3 and TON of Pin 5 can be respectively set by choosing appropriate values for the capacitor between Pin 7 and VCC and the capacitor between Pin 1 and ground.
Drive outputs include two systems OUT1 and OUT which are controlled by the logic block.
These systems can be combined to enable a wide range of designs.
FApplications Tape end sensors for 1.
5 to 3V headphone stereos Mute and song selection sensors FFeatures 1) Operation possible at ultra-low voltages.
(VCC = 0.
8 to 4.
5V) 2) Minimal attached components.
3) Uses dual rectified current method for excellent signal response.
FAbsolute maximum ratings (Ta = 25_C)
4) Very low current dissipation.
(IQ = 0.
9mA) 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.
FRecommended operating conditions (Ta = 25_C)
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Audio ICs
FBlock diagram
BA3714F
FElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC = 1.
25V)
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Audio ICs
FMeasurement circuit
BA3714F
FTiming chart
FApplication example
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Audio ICs
FExternal dimensions (Units: mm)
BA3714F
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