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TEA1062NL-S16-R Datasheet(PDF) 11 Page - Unisonic Technologies |
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TEA1062NL-S16-R Datasheet(HTML) 11 Page - Unisonic Technologies |
11 / 13 page TEA1062N/TEA1062AN LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 11 of 13 www.unisonic.com.tw QW-R108-011.C 4 9 QR VEE 9 4 QR VEE 4 9 QR VEE (2) (1) (a) (b) (c) Fig.11 Alternative receiver arrangement (a) Dynamic earpiece. (b) Magnetic earpiece. The resistor marked(1) may be connected to prevent distortion(inductive load) (c) Piezoelectric earpiece. The earpiece marked(2) is required to increase the phase margin (capacitive load) -6 -4 -2 0 0 20406080 100 120 140 Iline (mA) R9=20 78.7k 110k 140k (1) (2) (3) (3) (1) (2) R6= R6= R6= Fig. 12 Variation of gain with line current, with R6 as a parameter. →Gv (dB) R6=∞ Rexch( Ω) 400 600 800 1000 R6(k Ω) 36 100 78.7 × × Vexch(V) 48 140 110 93.1 82 60 × × 120 102 Table 1 Values of resistor R6 for optimum line loss compensation for various usual values of exchange supply voltage (Vexch) and exchange feeding bridge resistance(Rexch);R9=20 Ω. 10 6 11 7 12 13 1 4 5 2 3 16 8 15 14 9 MIC- MIC+ REG AGC STAB SLPE GAS2 GAS1 GAR QR LN VCC VEE IR DTMF MUTE R1 620 Ω 100 μF C4 100pF C7 1nF C6 100pF R4 100k Ω R7 68k Ω R9 20 Ω R5 3.6k Ω R6 C3 4.7 μF 10 μF C1 100 μF Vi Vi RL 600 Ω C8 1nF 10 TO 140 mA Vo Fig.13 Test circuit defining voltage gain of MIC+, MIC- and DTMF inputs. |
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