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UA1029 数据表(PDF) 5 Page - Unisonic Technologies |
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UA1029 数据表(HTML) 5 Page - Unisonic Technologies |
5 / 7 page UA1029 LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 5 www.unisonic.com.tw QW-R107-033.B APPLICATION INFORMATION 1. Adjustment of voltage gain The voltage gain GV is obtained by R1, R2 and RF as below. By increasing RF, reduction of GV is possible. 40dB or over in use is recommended. RF + R1 + R2 GV = 20 log RF+ R1 Sine oscillation is probable as a result of feedback in crease. + - 45Ω 30kΩ AMP + CNF Rf 47μF R1 OUTPUT R2 INPUT 10/11 2/4 Fig.1 9/12 2. Input stage The input circuit of this IC is as shown as below. PNP Tr: TR1 is provided in the input circuit so as to make its usage possible without the input coupling capacitor. However, at Pin 10 and Pin 11 max 60 mV offset voltage is produced. Fig.2 illustrate the input circuit of UTC UA1029. A offset voltage of 60mV max is possible. TR1 is featured to eliminate the usage of coupling capacitor. 2/4 INPUT 30kΩ 30kΩ OUTPUT To DRIVER 45Ω To BIAS NF Rf Fig. 2 + 47μF TR3 TR2 TR1 GND CIN 10/11 13/14 9/12 |
类似零件编号 - UA1029_15 |
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类似说明 - UA1029_15 |
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