Datasheet > GL6851

GL6851

更新时间： 2022-11-26 22:38:14

品牌	Logo	应用领域
海力士 - HYNIX		/
页数	文件大小	规格书
3页	38K
描述
TWO TONE RINGER

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GL6851 数据手册

GL6851

TWO TONE RINGER

Pin Configuration

Description

The GL6851 tone ringer is a monolithic device,

which incorporates two oscillators, an 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 GL6851 has provision for

adjustment of the supply initiation current.

VCC

RSL

OUTPUT

HIGHOSC_2

HIGHOSC_1

GL6851

LOWOSC_1

LOWOSC_2

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.

Adjustable for reduced supply initiation current

Include ESD protection.

Block Diagram

POWER SUPPLY

CONTROL CIRCUIT

(WITH HYSTERESIS)

LOW FREQUENCY

OSCILLATOR

HIGH FREQUENCY

OSCILLATOR

OUTPUT

AMPLIFIER

12 3

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