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GL68501

Hynix Semiconductor
Part Number GL68501
Manufacturer Hynix Semiconductor
Description TWO TONE RINGER
Published Mar 23, 2005
Detailed Description GL6850 GL6850 TWO TONE RINGER Description The GL6850 tone ringer is a monolithic device, which incorporates two oscilla...
Datasheet PDF File GL68501 PDF File

GL68501
GL68501


Overview
GL6850 GL6850 TWO TONE RINGER Description The GL6850 tone ringer is a monolithic device, which incorporates two oscillators, and output amplifier and a power supply control circuit.
The oscillator frequencies can be adjusted over a wide range by selection of external components.
One oscillator, normally operated at a low frequency, causes the second oscillator to alternate between its nominal frequency and a related higher frequency.
The resulting output is a distinct warbling tone.
The output amplifier will drive either a transformer coupled loudspeaker or a piezo-ceramic transducer.
The device can be powered from a telephone line or a fixed d.
c.
supply.
The power control circuit has builtin hysteresis to prevent false triggering and rotary dial chirps.
The GL6850 can be triggered externally under logic control.
Pin Configuration VCC 1 TRIG_IN 2 8 OUTPUT 7 HIGHOSC_2 GL6850 LOWOSC_1 3 LOWOSC_2 4 6 5 HIGHOSC_1 GND Features • • • • • • • • Low current consumption.
Designed for telephone bell replacement.
Small size MINIDIP package.
Adjustable 2- frequency tone.
Built-in hysteresis prevents false triggering and rotary dial CHIRPS.
Alarms or other alerting devices.
External triggering or ringer disable.
Include ESD protection.
Block Diagram 4 3 2 1 POWER SUPPLY CONTROL CIRCUIT (WITH HYSTERSIS) LOW FREQUENCY OSCILLATOR HIGH FREQUENCY OSCILLATOR OUTPUT AMPLIFIER 5 6 7 8 1 GL6850 Absolute Maximum Ratings (Ta = 25¡ É ) CHARACTERISTICS Supply Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL VCC Po Topr Tstg VALUE 30 400 -25 to 65 -65 to 150 UNIT V mW ¡ É ¡ É ) Electrical Characteristics (Ta = 25¡ É CHARACTERISTICS Operating Supply Voltage Initiation Supply Voltage1 Initiation Supply Current1 Sustaining Voltage2 Sustaining Current2 Trigger Voltage3 Trigger Current3 Disable Voltage4 Disable Current4 Output Voltage High Output Voltage Low SYMBOL VCC VSI ISI VSUS ISUS VTR ITR VDIS IDIS VOH VOL fH1 High Frequency 1 High Frequency 2 Low...


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