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TS31002 Datenblatt(PDF) 4 Page - Taiwan Semiconductor Company, Ltd

Teilenummer TS31002
Bauteilbeschribung  Tong Ringer
Download  8 Pages
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Hersteller  TSC [Taiwan Semiconductor Company, Ltd]
Direct Link  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

TS31002 Datenblatt(HTML) 4 Page - Taiwan Semiconductor Company, Ltd

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TS31002
Tong Ringer
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Version: A07
Application Circuit
SWITCH POSITION IS THE FOLLOWING TABLE: :
PARAMETER
SW1
SW2
Vsi , Isi
1
1
Vsus , Isus
1
1
Voh
2
2
Vol
2
3
Figure 3. Test Circuit (2)
SWITCH POSITION IS THE FOLLOWING TABLE:
PARAMETER
SW1
SW2
FL
1
1
fH1
3
2
fH2
2
2
Application Note
The application circuit illustrates the use of the TS31002 devices in typical telephone or extension tone ringer
application.
The AC ringer signal voltage appears across the TIP and RING inputs of the circuit and is attenuated by capacitorC1
and resistor R1.
C1 also provides isolation from DC voltages (48V) on the exchange line.
After full wave rectification by the bridge diode, the waveform 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 512(fh1) and 640Hz(fh2) at a 10Hz(fL) rate.
The loudspeaker load is coupled through a 1300W to 8W transformer.
The output coupling capacitor C5 is required with transformer coupled loads.
When driving a piezo-ceramic transducer type load, the coupling C5 and transformer (1300W:8W) are not required.
However, a current limiting resistor is required.
The low frequency oscillator oscillates at a rate (fL) controlled by an external resistor (R2) and capacitor (C2).
The frequency can be determined using the relation fL=1/1.289R2*C2. The high frequency oscillates at a fH1, fH2
controlled by an external resistor (R3) and capacitor (C3). The frequency can be determined using the relation
H1=1/1.504R3*C3, fH2=1/1.203R3*C3.
R1 = 165 K (+/-)
1%
R2 = 191 K (+/-)
1%
C1 = 0.47 µF (+/-) 5%
C2 = 0.0068 µF (+/-) 5%
R1 = 165 K (+/-) 1%
R2 = 191 K (+/-) 1%
C1 = 0.47 µF (+/-) 5%
C2 = 0.0068 µF (+/-) 5%


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