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WM8953ECS/RV 数据表(PDF) 9 Page - Wolfson Microelectronics plc |
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WM8953ECS/RV 数据表(HTML) 9 Page - Wolfson Microelectronics plc |
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9 / 100 page  Production Data WM8953 w PD, January 2009, Rev 4.0 9 Test Conditions DCVDD = 1.8V, DBVDD = 3.3V, AVDD = 3.3V, 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 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 Line Input Resistance Note: this will be seen in parallel with the resistance of other enabled input paths from the same pin LIN2 or RIN2 to INMIXL or INMIXR (+6dB) 7.5 k Ω Input Capacitance All analogue input pins 10 pF Test Conditions DCVDD = 1.8V, DBVDD = 3.3V, AVDD = 3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Input Programmable Gain Amplifiers (PGAs) LIN12, LIN34, RIN12 and RIN34 Minimum Programmable Gain -16.5 dB Maximum Programmable Gain 30 dB Programmable Gain Step Size Guaranteed monotonic 1.5 dB Mute Attenuation Inputs disconnected 90 dB Single PGA in differential mode, gain = +30dB 60 Single PGA in differential mode, gain = 0dB 50 Common Mode Rejection Ratio (1kHz input) Single PGA in differential mode, gain = -16.5dB 50 dB Input Mixers INMIXL and INMIXR Minimum Programmable Gain PGA Outputs to INMIXL and INMIXR 0 dB Maximum Programmable Gain PGA Outputs to INMIXL and INMIXR +30 dB Programmable Gain Step Size PGA Outputs to INMIXL and INMIXR 30 dB Minimum Programmable Gain Line Inputs to INMIXL and INMIXR -12 dB Maximum Programmable Gain Line Inputs to INMIXL and INMIXR +6 dB Programmable Gain Step Size Line Inputs to INMIXL and INMIXR 3 dB Mute attenuation 95 dB |
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