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AS2521BP Datasheet(PDF) 11 Page - ams AG |
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AS2521BP Datasheet(HTML) 11 Page - ams AG |
11 / 14 page Preliminary AS2520/21/20B/21B Rev. 5.1 Page 11 May 1999 Receive Symbol Parameter Condition Min. Typ. Max. Units A RX Gain (LS to RO), Default LSP Gain (LSI to LO) Volume reset 1.5 17.5 3 19 4.5 20.5 dB dB ∆A TX/F Variation with Frequency f = 500 Hz to 3.4 kHz +/- 0.8 dB A LLC Gain Range, LLC Speech mode; LLC = V SS or VDD -6 dB A RX Volume Range 10 steps, each 2 dB 20 dB THD Distortion V RI < 0.2 VRMS 2 % V SC A SCO Soft Clip Level (RO) Soft Clip Level (LO) Soft Clip Overdrive V RO = Not AS2520B/21B; V LO = Unloaded 1 1.3 30 V PEAK V PEAK dB V RTH A AD t DECAY t DECAY Threshold Voltage at RTH Attenuation Depth Attack Time Decay Time Channel control; V RI > 0.8 VRMS Channel control 7 15 30 25 mV dB µs/6dB µs/6dB V NO V UFC Noise Output Voltage (RO) Unwanted Frequency Components (RO) HS = high; T AMB = 25°C 50 Hz.........20 kHz -72 -60 dBmp dBmp Z IN Input Impedance, RI 8 kohm V IN RI Input Voltage Range, RI +/- 2 V PEAK A ST Sidetone Cancellation V RI < 0.2 VRMS; TAMB = 25°C 26 dB Z IN Input Impedance, STB 80 kohm V IN ST Input Voltage Range, STB +/- 2 V PEAK General Timings Symbol Parameter Condition Min. Typ. Max. Units t VOL Volume Key Debounce 7 ms t SCA Soft Clip Attack Time V IN above soft clip level 0.12 ms/6dB t SCD Soft Clip Decay Time V IN below soft clip level 128 ms/6dB t PDA Peak Detector Attack Time V IN above VTH 3.2 ms/V t PDD Peak Detector Decay Time V IN below VTH 29 ms/V t LPA Low-Power Attack Time V PP < 3.6V 250 ms/6dB t LPD Low-Power Release V PP > 3.6V 1 sec/6dB |
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