31002A-S08-T datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Wireless rf/communication> Telecom circuit> 31002A-S08-T

31002A-S08-T: DescriptionTELEPHONE TONE RINGER; CategoryWireless rf/communication Telecom circuit; File Size177KB，7 Pages; ManufacturerUNISONIC TECHNOLOGIES CO.,LTD; Websitehttp://www.unisonic.com.tw/; Environmental Compliance

Download Datasheet Parametric Compare View All

31002A-S08-T Overview

TELEPHONE TONE RINGER

31002A-S08-T Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Parts packaging code	SOIC
package instruction	SOP-8
Contacts	8
Reach Compliance Code	compli
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
length	4.92 mm
Number of functions	1
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-45 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
power supply	21 V
Certification status	Not Qualified
Maximum seat height	1.96 mm
Nominal supply voltage	21 V
surface mount	YES
technology	BIPOLAR
Telecom integrated circuit types	TELEPHONE RINGER CIRCUIT
Temperature level	INDUSTRIAL
Terminal surface	TIN LEAD
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
width	3.95 mm
Base Number Matches	1

Preview

Download Datasheet

View All

UNISONIC TECHNOLOGIES CO., LTD

31002A

TELEPHONE TONE RINGER

DESCRIPTION

The UTC

31002A

is a bipolar integrated circuit designed for

telephone bell replacement. It can also be used as alarms or other

alerting devices.

LINEAR INTEGRATED CIRCUIT

SOP-8

FEATURES

*Designed for telephone bell replacement.

*Low current drain for multiple extension of lines.

*Adjustable 2-frequency tone.

*Adjustable warbling rate.

*Built-in hysteresis prevents false triggering and rotary dial

'CHIRPS'.

*Programmable for initiation current by simple external resistor

DIP-8

*Pb-free plating product number: 31002AL

ORDERING INFORMATION

Ordering Number

Normal

Lead Free Plating

31002A-D08-T

31002AL-D08-T

31002A-S08-R

31002AL-S08-R

31002A-S08-T

31002AL-S08-T

Package

DIP-8

SOP-8

Packing

Tube

Tape Reel

Tube

www.unisonic.com.tw

1 of 6

QW-R108-005.C

31002A

APPLICATION NOTE

LINEAR INTEGRATED CIRCUIT

The application circuit illustrates the use of the UTC

31002A

device in typical telephone tone ringer application.

The AC ringer signal voltage appears across the TIP and RING inputs of the circuit and is attenua-ted by capacitor

C1 and resistor R1.

C1 also provides isolation from DC voltage (48V) on the exchanged line.

After full wave rectification by the bridge diode, the wave form is filtered by capacitor C4 to provide a DC supply for

the tone ringer chip.

As this voltage exceeds the initiation voltage (Vsi), oscillation starts.

With the components shown, the output frequency chops between 512Hz (F

) and 640 Hz (F

) at a 10 Hz (F

)

rate.

The loudspeaker load is coupled through a 1300Ω to 8Ω transformer.

The output coupling capacitor C5 is required with transformer coupled loads.

When driving a pizeo-ceramic transducer type load, the coupling C5 and transformer (1300Ω:8Ω) are not required.

However, a current limiting resistor is required.

The low frequency oscillator oscillates at a rate (F

) controlled by an external resistor (R2) and capacitor (C2).

The frequency can be determined using the relation F

=1/1.289 R2* C2. The high frequency oscillates at a F

controlled by an external resistor (R3) and capacitor (C3). The frequency can be determined using the relation

=1/1.504 R3*C3 and F

=1/1.203 R3*C3

Pin 2 of the UTC

31002A

allows connection of external resistor RSL, which is used to program the slope of the

supply current vs. supply voltage characteristics (see Fig.3), and hence the supply current up to the initiation voltage

(Vsi). This initiation voltage remains constant independent of RSL.

The supply current drawn prior to triggering varies inversely with RSL, decreasing for increasing value of

resistance. Thus, increasing the value of RSL, will decrease the amount of AC ringing current required to trigger the

device. As such, longer sucribser loops are possible since less voltage is dropped per unit length of loop wire due to

the lower current level. RSL can also be used to compensated for smaller AC coupling capacitors (C5 on Fig.4)

(higher impedance) to the line which can be used to alter the ringer equivalence number of a tone ringer circuit.

The graph in Fig.3 illustrates the variation of supply current with supply voltage of the UTC

31002A.

Three curves are drawn to show the variation of initiation current with RSL. Curve B ( RSL=6.8K) shows the I-V

characteristic for UTC

31002A

tone ringer. Curve A is a plot with RSL<6.8KΩ and shows an increase in the current

drawn up to the initiation voltage Vsi. The I-V characteristic after initiation remains unchanged. Curve C illustrates

the effect of increasing RSL above 6.8K initiation current decreases but again current alter triggering is unchanged.

Icc(mA),Supply Current

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

Supply Current (mA)

5 of 6

QW-R108-005.C

31002A-S08-T Related Products

	31002A-S08-T	31002A-D08-T	31002AL-S08-R	31002A_08	31002A	31002A-S08-R	31002AL-D08-T	31002AL-S08-T
Description	TELEPHONE TONE RINGER	TELEPHONE TONE RINGER	TELEPHONE TONE RINGER	TELEPHONE TONE RINGER	TELEPHONE TONE RINGER	TELEPHONE TONE RINGER	TELEPHONE TONE RINGER	TELEPHONE TONE RINGER
Is it Rohs certified?	conform to	conform to	conform to	-	-	conform to	conform to	conform to
Parts packaging code	SOIC	DIP	SOIC	-	-	SOIC	DIP	SOIC
package instruction	SOP-8	DIP-8	SOP, SOP8,.25	-	-	SOP-8	DIP, DIP8,.3	SOP, SOP8,.25
Contacts	8	8	8	-	-	8	8	8
Reach Compliance Code	compli	compli	compli	-	-	compli	compli	compli
JESD-30 code	R-PDSO-G8	R-XDIP-T8	R-PDSO-G8	-	-	R-PDSO-G8	R-XDIP-T8	R-PDSO-G8
length	4.92 mm	9.2 mm	4.92 mm	-	-	4.92 mm	9.2 mm	4.92 mm
Number of functions	1	1	1	-	-	1	1	1
Number of terminals	8	8	8	-	-	8	8	8
Maximum operating temperature	85 °C	85 °C	85 °C	-	-	85 °C	85 °C	85 °C
Minimum operating temperature	-45 °C	-45 °C	-45 °C	-	-	-45 °C	-45 °C	-45 °C
Package body material	PLASTIC/EPOXY	UNSPECIFIED	PLASTIC/EPOXY	-	-	PLASTIC/EPOXY	UNSPECIFIED	PLASTIC/EPOXY
encapsulated code	SOP	DIP	SOP	-	-	SOP	DIP	SOP
Encapsulate equivalent code	SOP8,.25	DIP8,.3	SOP8,.25	-	-	SOP8,.25	DIP8,.3	SOP8,.25
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	-	-	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	-	-	SMALL OUTLINE	IN-LINE	SMALL OUTLINE
power supply	21 V	21 V	21 V	-	-	21 V	21 V	21 V
Certification status	Not Qualified	Not Qualified	Not Qualified	-	-	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.96 mm	4.31 mm	1.96 mm	-	-	1.96 mm	4.31 mm	1.96 mm
Nominal supply voltage	21 V	21 V	21 V	-	-	21 V	21 V	21 V
surface mount	YES	NO	YES	-	-	YES	NO	YES
technology	BIPOLAR	BIPOLAR	BIPOLAR	-	-	BIPOLAR	BIPOLAR	BIPOLAR
Telecom integrated circuit types	TELEPHONE RINGER CIRCUIT	TELEPHONE RINGER CIRCUIT	TELEPHONE RINGER CIRCUIT	-	-	TELEPHONE RINGER CIRCUIT	TELEPHONE RINGER CIRCUIT	TELEPHONE RINGER CIRCUIT
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	-	-	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal form	GULL WING	THROUGH-HOLE	GULL WING	-	-	GULL WING	THROUGH-HOLE	GULL WING
Terminal pitch	1.27 mm	2.54 mm	1.27 mm	-	-	1.27 mm	2.54 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	-	-	DUAL	DUAL	DUAL
width	3.95 mm	7.62 mm	3.95 mm	-	-	3.95 mm	7.62 mm	3.95 mm
Base Number Matches	1	1	1	-	-	1	1	1

Recommended Resources

DC voltmeter and ammeter connection circuit

Simple miniature integrated FM wireless microphone circuit

intermittent irrigation controller circuit

Wanbao CFXB50-2P electronic thermal insulation rice cooker circuit diagram

Reversed dual flasher circuit

Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components