SC9106 查看數據表（PDF） - Unspecified

零件编号

产品描述 (功能)

生产厂家

SC9106

TONE RINGER

Unspecified 

Silicore

SC9106

With the components shown, the output frequency chops between 512Hz (fH1) and

640 Hz (fH2) at 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 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 (FL) controlled by an external

resistor (R2) and capacitor (C2).

The frequency can be determined using the relation fL=1/1.289 R2* 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 fH1=1/1.504 R3*C3 and

fH2= 1/1.203 R3*C3.

Pin 2 of the SC9106 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 subscriber 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 application circuit) (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 SC9106.

Three curves are drawn to show the variation of initiation current with RSL.

Curve B ( RSL=6.8kΩ) shows the I-V characteristic for SC9106 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 6.8kW initiation current decreases but

again current after triggering is unchanged.

SHAOXING SILICORE TECHNOLOGY CO.,LTD

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