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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8959 датащи(PDF) 12 Page - Wolfson Microelectronics plc |
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WM8959 датащи(HTML) 12 Page - Wolfson Microelectronics plc |
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12 / 155 page  WM8959 Pre-Production w PP, May 2008, Rev 3.1 12 Test Conditions DCVDD = 1.8V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, SPKVDD = 5V, TA = +25 oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Analogue Input Pin Impedances (LIN1, LIN2, LIN3, LIN4, RIN1, RIN2, RIN3, RIN4) LIN1, LIN3, RIN1 or RIN3 (PGA Gain = -16.5dB) 57 k Ω LIN1, LIN3, RIN1 or RIN3 (PGA Gain = 0dB) 33 k Ω LIN1, LIN3, RIN1 or RIN3 (PGA Gain = +30dB) 2 k Ω B1 PGA Input Resistance Note: this will be seen in parallel with the resistance of other enabled input paths from the same pin LIN2, LIN4, RIN2 or RIN4 (Constant for all gains) 65 k Ω LIN2 or RIN2 to INMIXL or INMIXR (-12dB) 60 k Ω LIN2 or RIN2 to INMIXL or INMIXR (0dB) 15 k Ω LIN2 or RIN2 to INMIXL or INMIXR (+6dB) 7.5 k Ω LIN2 or RIN2 to SPKMIX (SPKATTN = 0dB) 20 k Ω LIN2 or RIN2 to SPKMIX (SPKATTN = -12dB) 20 k Ω LIN3 or RIN3 to LOMIX or ROMIX (0dB) 20 k Ω LIN3 or RIN3 to LOMIX or ROMIX (-21dB) 224 k Ω RXP and RXN via RXVOICE to AINLMUX or AINRMUX (Gain = +6dB) 7.5 k Ω RXP and RXN via RXVOICE to AINLMUX or AINRMUX (Gain = 0dB) 15 k Ω RXP and RXN via RXVOICE to AINLMUX or AINRMUX (Gain = -12dB) 45 k Ω RXP and RXN via RXVOICE to AINLMUX and AINRMUX (Gain = +6dB) 3.8 k Ω RXP and RXN via RXVOICE to AINLMUX and AINRMUX (Gain = 0dB) 7.5 k Ω RXP and RXN via RXVOICE to AINLMUX and AINRMUX (Gain = -12dB) 25 k Ω LIN4 to OUT3 or RIN4 to OUT4 (Gain = -6dB) 20 k Ω B2 Line Input Resistance Note: this will be seen in parallel with the resistance of other enabled input paths from the same pin LIN4 to OUT3 or RIN4 to OUT4 (Gain = 0dB) 20 k Ω B3 Input Capacitance All analogue input pins 10 pF |
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