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ST5088 数据表(PDF) 30 Page - STMicroelectronics |
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ST5088 数据表(HTML) 30 Page - STMicroelectronics |
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30 / 33 page ![]() DISTORTION Symbol Parameter Test Condition Min. Typ. Max. Unit STDx STDr Signal to Total Distortion Sinusoidal Test Methode (measured using C message weighting Filter) Level = 0 dBm0 to - 30 dBm0 Level = - 40 dBm0 Level = - 45 dBm0 36 29 24 dBC dBC dBC SDFx Single Frequency Distortion transmit 0 dBm0 input signal -46 dB SDFr Single Frequency Distortion receive 0 dBm0 input signal -46 dB IMD Intermodulation Loop-around measurament Voltage at VMIC = -4 dBm0 to -21 dBm0, 2 Frequencies in the range 300 - 3400 Hz -41 dB CROSSTALK Symbol Parameter Test Condition Min. Typ. Max. Unit CTx-r Transmit to Receive Transmit Level = 0 dBm0, f = 300 - 3400 Hz DR = QuietPCM Code -65 dB CTr-x Receive to Transmit Receive Level = 0 dBm0, f = 300 - 3400 Hz; VMIC =0V -65 dB APPLICATION NOTE FOR MICROPHONE CONNECTIONS The 4 connection modes (since the MIXED MODE is symmetrical with respect to MIC1 and MIC2) allow one microphone at a time to be selected via the VS bit (bit 7 of Control Register CR4). TAPE RECORDER Symbol Parameter Test Condition Min. Typ. Max. Unit GTRO RX Receive TRO Output DR = 0dBm0 200 245 275 mVRMS GTRO TX Transmit TRO Output DX = 0dBm0 200 246 275 mVRMS ST5088 30/33 |
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