L3240D1 datasheet(1/6 Pages) STMICROELECTRONICS

tên linh kiện	L3240D1

Giải thích chi tiết về linh kiện	ELETRONIC TWO-TONE RINGER

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L3240

June 1993

ELETRONIC TWO-TONE RINGER

.

LOW CURRENT CONSUMPTION, IN ORDER

TO ALLOW THE PARALLEL OPERATION OF 4

DEVICES

.

INTEGRATED RECTIFIER BRIDGE

WITH

ZENER DIODES TO PROTECT AGAINST

OVERVOLTAGES

.

LITTLE EXTERNAL CIRCUITRY

.

TONE AND SWITCHING FREQUENCIES AD-

JUSTABLE BY EXTERNAL COMPONENTS

.

INTEGRATED VOLTAGE AND CURRENT

HYSTERESIS

.

COMPLEMENTARY OUTPUT CONFIGURA-

TION

DESCRIPTION

L3240 is a monolithic integrated circuit designed to

replace the mechanical bell in telephone sets, in

connectionwith an electro acoustical converter. The

device can drive either directly a piezo ceramic con-

verter (buzzer) or a small loudspeaker. In this case

a transformer is needed. The two tone frequencies

generated are switched by an internal oscillator in a

fast sequenceand made audible across output am-

plifiers in the transducer ; both tone frequencies and

the switching frequency can be externally adjusted.

The supply voltage is obtained from the AC ring sig-

nal and the circuit is designed so that noise on the

line or variations of the ringing signal cannot affect

the correct operation of the devices.

The output bridge configuration allows to use a high

impedance transducer with acoustical results much

better than in a single ended configuration.

The two outputs can also be connected inde-

pendently to

different

converters

or

actua-

tors (acoustical, opto, logic).

PIN CONNECTION ( top view)

Minidip

SO8

ORDERING NUMBERS : L3240B1 (Minidip)

L3240D1 (SO8)

1/6

Số phần tương tự - L3240D1

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Crydom Inc.,	L324	585Kb / 4P	Power Modules
Texas Instruments	L324	1Mb / 35P	QUADRUPLE OPERATIONAL AMPLIFIERS REVISED MARCH 2010
Connor-Winfield Corpora...	L324-155.52	119Kb / 2P	5.0x7.0mm Surface Mount LVDS Clock Oscillator Series
Texas Instruments	L324A	1Mb / 35P	QUADRUPLE OPERATIONAL AMPLIFIERS REVISED MARCH 2010
Crydom Inc.,	L324F	585Kb / 4P	Power Modules

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Mô tả tương tự - L3240D1

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	LS1240A	496Kb / 7P	Electronic two-tone ringer 23-Aug-2006
Wing Shing Computer Com...	LS1240A	282Kb / 4P	Electronic Two-Tone Ringer
System Logic Semiconduc...	SL2411	50Kb / 6P	Tone Ringer
Daewoo Semiconductor	DBL5001	317Kb / 6P	TONE RINGER
Hynix Semiconductor	GL6840A	87Kb / 8P	Electronic Two Tone Ringer
	GL6850	37Kb / 3P	TWO TONE RINGER
	GL6851	35Kb / 3P	TWO TONE RINGER
STMicroelectronics	LS1241	175Kb / 3P	Electronic Two - Tone Ringer
Integral Corp.	IL2410	330Kb / 7P	Tone Ringer
STMicroelectronics	LS1240A	245Kb / 9P	Electronic two-tone ringer 23-Aug-2006

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L3240D1 bảng dữ liệu(HTML) 1 Page - STMicroelectronics

Số phần tương tự - L3240D1

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