8021-2 : DING-DONG SOUND EFFECT GENERATOR IC
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General Description
The 8021-2 is a ding-dong sound effect generator IC produced by LSI CMOS technology. With built-in
RC oscillator and digital envelope circuits, minimal external components are required. This IC simulates
the mechanical ding-dong sound, and is ideal for door bell application.
Features
- 1.3V to 3.3V operating voltage and low power consumption
- One-shot mode of 2 ding-dong playing sequences
-
Standard TO-92 package form
- Dynamic speaker can be driven with external NPN transistor
Absolute Maximum Ratings
DC Supply Voltage ........................................... -0.3V to +5.0V
Operating Ambient Temperature .................... -10°C to 60°C
Storage Temperature ....................................... -55°C to 125°C
Electrical Characteristics
(Vss=0V, Vdd=1.5V, Ta=25°C, unless otherwise specified.)
Parameter
Symbol Min.
Typ.
Max.
Conditions
Operating voltage Vdd 1.3V
1.5V
3.3V
Current stand-by Is
-
-
0.5µA All terminal open
operating
Idd
-
0.5mA
1mA
Osc. frequency
Focs 102kHz 120kHz 144kHz
Pin assignment of TO-92 package form
Application Circuit
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