gl6840a Hynix Semiconductor, gl6840a Datasheet
gl6840a
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gl6840a Summary of contents
Page 1
... Description GL6840A are monolithic integrated circuits designed to replace the mechanical bell in telephone sets, in connection with an electro acoustical converter. The device can drive either directly a piezo ceramic converter(buzzer small loudspeaker. In this case a transformer is needed. The two tone frequen- cies generated are switched by an internal oscillator ...
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Block Diagram Bridge Diode Sweep Frequency Oscillator 3 Pin Description PIN NAME Input terminals to bridge diode. The AC ringing signal from the 1,8 LINE telephone line drives the ringer through bridge. 2 GND Ground This pin ...
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Electrical Characteristics : T PARAMETER SYMBOL Supply Voltage V Current Consumption without load(pin 1-8) Activation Voltage Sustaining Voltage Differential Resistance in OFF condition(pin 8-1) Output Voltage Swing Short Circuit Current (pin 5-6) Voltage Drop between pin 8-1 and pin 7-2 ...
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... 100§ Ý 14§ Ú GL6840A 100§ Ý 14§ Ú GL6840A 100§ Ý 4 GL6840 0.22§ Þ 10§ Ú 10§ Ú Piezo Vout Speaker 1 1300:8§ ...
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Description GL6840B are monolithic integrated circuits designed to replace the mechanical bell in telephone sets, in connection with an electro acoustical converter. The device can drive either directly a piezo ceramic converter(buzzer small loudspeaker. In this case a ...
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Block Diagram Bridge Diode Sweep Frequency Oscillator 3 Pin Description PIN NAME Input terminals to bridge diode. The AC ringing signal from the 1,8 LINE telephone line drives the ringer through bridge. 2 GND Ground This pin ...
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Electrical Characteristics : T PARAMETER Supply Voltage Current Consumption without load(pin 1-8) Activation Voltage Sustaining Voltage Differential Resistance in OFF condition(pin 8-1) Output Voltage Swing Short Circuit Current (pin 5-6) Voltage Drop between pin 8-1 and pin 7-2 Output Frequencies ...
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Typical Application Figure1 : Single output applied pin#5 TIP 1§ Þ 250V AC 2.2§ Ú Tel Line AB £ « 10§ Þ V RING Figure2 : Single output applied pin#6 1§ Þ 250V ...