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AD1843JST bảng dữ liệu(PDF) 2 Page - Analog Devices |
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2 / 64 page ANALOG INPUT Min Typ Max Units Full-Scale Input Voltage (RMS Values Assume Sine Wave Input) All Inputs with ADRFLT & ADLFLT = 0 and LINLSD & LINRSD = 0 1 V rms (LINLP, LINRP, AUX1L, AUX1R, AUX2L, 2.55 2.828 3.1 V p-p AUX2R, AUX3L, AUX3R, MIN) All Inputs with ADRFLT & ADLFLT = 0 and LINLSD & LINRSD = 1 2 V rms (LINLP & LINLN, LINRP & LINRN) 5.1 5.656 6.2 V p-p All Inputs with ADRFLT & ADLFLT = 1 and LINLSD & LINRSD = 0 1.127 V rms (LINLP, LINRP, AUX1L, AUX1R, AUX2L, AUX2R, AUX3L, 2.8 3.156 3.5 V p-p AUX3R, MIN) All Inputs with ADRFLT & ADLFLT = 1 and LINLSD & LINRSD = 1 2.254 V rms (LINLP & LINLN, LINRP & LINRN) 5.6 6.312 7.0 V p-p MIC with +20 dB Gain (LMGE & RMGE = 1 and ADRFLT & ADLFLT = 0) 0.1 V rms (MICL, MICR) 0.25 0.2828 0.31 V p-p MIC with 0 dB Gain (LMGE & RMGE = 0 and ADRFLT & ADLFLT = 0) 1 V rms (MICL, MICR) 2.55 2.828 3.1 V p-p AUX, SUM and MIN Input Impedance* 10K Ω (AUX1L, AUX1R, AUX2L, AUX2R, AUX3L, AUX3R, SUML, SUMR, MIN) LIN Input Impedance* (LINLP, LINLN, LINRP, LINRN) 40K Ω MIC Input Impedance* (MICL, MICR) 20K Ω Input Capacitance* (All Inputs) 15 pF PROGRAMMABLE GAIN AMPLIFIER–ADC Min Typ Max Units Step Size (0 dB to 22.5 dB) (All Steps Tested) 1.3 1.5 1.7 dB PGA Gain Range Span* 21.5 22.5 23.5 dB INPUT (AUX1, AUX2, AUX3, MIN, MIC) ANALOG AMPLIFIERS/ATTENUATORS Min Typ Max Units Step Size (+12.0 dB to –30 dB) (All Steps Tested) 1.25 1.5 1.75 dB Step Size (–31.5 dB to –34.5 dB) (All Steps Tested) 1.1 1.5 1.9 dB Input Gain/Attenuation Range* 45.5 46.5 47.5 dB Mute Attenuation* –80.0 dB AD1843–SPECIFICATIONS REV. 0 –2– STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED Temperature 25 °C Digital Supply (VDD) 5.0 V Analog Supply (VCC) 5.0 V Sample Rate (FS) 48 kHz Input Signal 1008 Hz Analog Output Passband 20 Hz to 20 kHz ADC FFT Size 2048 DAC FFT Size 8192 VIH 2.0 V VIL 0.8 V VOH 2.4 V VOL 0.4 V IOH –2 mA IOL 2mA ADC Input Conditions Mic 20 dB Gain Disabled LIN Single-Ended (LINLSD & LINRSD = 0) Autocalibrated 0 dB PGA Gain –1.0 dB Relative to Full Scale Line Input 16-Bit Linear Mode DAC Conditions Autocalibrated 0 dB Attenuation 0 dB Relative to Full Scale 16-Bit Linear Mode No Output Load Mute Off DAC1 Single-Ended DAC2 Differential |
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