NJU7181 Datasheet, PDF (1/13 Pages) New Japan Radio – SIGNAL LEVEL SENSOR SYSTEM

NJU7181
SIGNAL LEVEL SENSOR SYSTEM
GENERAL DESCRIPTION
The NJU7181 is a signal level sensor system IC. It sends
a High flag to the microprocessor or other equipments
whenever it detects the existence of the audio signal.
The NJU7181 includes a delay circuit which allows the
IC continue to hold the flag after the absence of the audio
signal. This holding time can be adjusted with external
capacitor.
Together with its adjustable Input Sensitivity (by external
resistor) & its characteristic of low current consumption and
low operating voltage, NJU7181 is suitable for Eco-Design of
Energy-using Products and for battery operated applications.
PACKAGE OUTLINE
TVSP8
FEATURES
• Operating Voltage
0.9 to 5.5V
• Low Operating Current
55µA typ.
• Delay circuit for long Recovery time
• Adjustable Recovery time by external capacitor
• Adjustable Input Sensitivity by external resistance
• C-MOS Technology
• Package Outline
TVSP8, ESON8
ESON8 (PLAN)
APPLICATIONS
• Power Saving for battery operated devices
• Muting Application
• Memory saving for recording devices
• Half- duplex transmission application
BLOCK DIAGRAM
V⁺
ON
OFF
V⁺
External Trigger
Level
Detector
Delay
D
L
CLR
Latch
OUT
IN
Version 5.1E
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