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TDA7705 데이터시트(PDF) 20 Page - STMicroelectronics |
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TDA7705 데이터시트(HTML) 20 Page - STMicroelectronics |
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20 / 42 page ![]() Electrical specifications TDA7705 20/42 Doc ID 15938 Rev 9 3.4.7 Audio DAC 3.4.8 IO interface pins Table 13. Audio DAC Symbol Parameter Test condition Min Typ Max Units Vout Max. output voltage Full scale - 1 - Vrms BW Bandwidth 1dB attenuation - 15 - KHz Rout Output resistance - 600 750 900 VN, out Output noise - - 60 95 µVrms THD Distortion -6 dBFS - 0.03 0.04 % Table 14. IO interface pins Symbol Parameter Test condition Min Typ Max Units - High level output voltage (all IOs except GPO pin 2) Iout = 500 µA 2.9 3.2 - V - GPIOs source current (all IOs in source mode except pin 2) Total sourced current by all GPIOs - - 1.25 mA - Low level output voltage (all IOs except GPO pin 2) Iout = -1 mA - 0.1 0.3 V - Input voltage range - 0 - 3.5 V - High level input voltage - 2.0 - - V - Low level input voltage - - - 0.8 V Treset Reset time Minimum time during which pin RSTN must be low so as to reset the device 10 - - µs Tlatch Boot mode configuration latch time Minimum time during which the voltage applied at pins 25 and 39 must be kept in order to latch the correct boot mode (serial bus configuration) 10 - - µs - GPO PLLTEST (pin 2) max source current -- - 1 mA - GPO PLLTEST (pin 2) max sink current --1 - mA - GPO PLLTEST (pin 2) minimum high level output voltage Iout = 1 mA 2.8 3.1 - V GPO PLLTEST (pin 2) maximum high level output voltage Iout = 1 mA - 0.1 0.3 V |
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