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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UBA1707TS датащи(PDF) 19 Page - NXP Semiconductors |
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UBA1707TS датащи(HTML) 19 Page - NXP Semiconductors |
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19 / 36 page  1999 Feb 17 19 Philips Semiconductors Product specification Cordless telephone, answering machine line interface UBA1707 Fig.14 Safe operating area (UBA1707T). LINE Tamb (°C) Ptot (mW) (1) 45 1000 (2) 55 875 (3) 65 750 (4) 75 625 When power is delivered to a loudspeaker with RL impedance, the curves must be shifted to the left by: with maximum power dissipated by the loudspeaker amplifier (dotted line given for VCC = 5.5 V, RL =16 Ω). ∆V ref V CC 2 2 π 2 R L I LN × × × ------------------------------------------ = The line current value can be calculated from ILN value as follows: where RSET is the resistive part of ZSET. I line I LN R SET R SLPE + () V LN V SLPE – + × R SET ---------------------------------------------------------------------------------------------- = handbook, full pagewidth 12 150 30 23456 89 10 11 MGK714 7 50 70 90 110 130 VLN − VSLPE (V) ILN (mA) (1) (2) (3) (4) no power delivered to the loudspeaker with power delivered to the loudspeaker ∆ Vref |
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