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TEA1062ANG-D16-T Arkusz danych(PDF) 10 Page - Unisonic Technologies |
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TEA1062ANG-D16-T Arkusz danych(HTML) 10 Page - Unisonic Technologies |
10 / 14 page TEA1062N/TEA1062AN LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 10 of 14 www.unisonic.com.tw QW-R108-011.D LN VEE Leq Vref Rp R1 C3 C1 100 F 4.7 F REG VCC R9 20 Rp=16.2k Leq=C3*R9*Rp Fig.3 Equivalent impedance circuit The anti-sidetone network for the UTCTEA1062N/TEA1062AN family shown in Fig.4 attenuates the signl received from the line by 32 dB before it enters the receiving amplifier. The attenuation is almost constant over the whole audio frequency range. Fig.5 shows a convertional Wheatstone bridge anti-sidetone circuit that can be used as an alternative. Both bridge types can be used with either resistive or complex set impedances. Fig. 4 Equivalent circuit of UTC TEA1062N/TEA1062AN anti-sidetone bridge Fig. 5 Equivalent circuit of an anti-sidetone network in a wheatstone bridge configuration 150 130 110 90 70 50 30 24 68 10 12 (1) (2) (3) (4) VLN-VSLPE(V) Iline (mA) (1) 45°C 1068mW (2) 55°C 934mW (3) 65°C 800mW (4) 75°C 666mW Tamb Ptot Fig.6 UTC TEA1062N/TEA1062AN safe operating area |
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