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AD1845JP-REEL Arkusz danych(PDF) 2 Page - Analog Devices |
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AD1845JP-REEL Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 40 page AD1845–SPECIFICATIONS STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED Temperature 25 °C Digital Supply (VDD) 5.0 V Analog Supply (VCC) 5.0 V Word 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 5V VIL 0V ANALOG INPUT Min Typ Max Units Input Voltage (RMS Values Assume Sine Wave Input) Line 1 V rms 2.55 2.83 3.35 V p-p MIC with +20 dB Gain (MGE = 1) 0.1 V rms 0.255 0.283 0.335 V p-p MIC with 0 dB Gain (MGE = 0) 1 V rms 2.55 2.83 3.35 V p-p Input Impedance* 10 17 k Ω Input Capacitance 15 pF PROGRAMMABLE GAIN AMPLIFIER–ADC Min Typ Max Units Step Size (All Steps Tested) (0 dB to 22.5 dB) 0.7 1.5 1.9 dB PGA Gain Range Span 21.5 22.5 23.5 dB AUXILIARY LINE, MONO, AND MICROPHONE INPUT ANALOG GAIN/AMPLIFIERS/ATTENUATORS Min Typ Max Units Step Size : AUX1, AUX2, LINE, MIC (All Steps Tested) (+12 dB to –30 dB) 1.25 1.5 1.75 dB (–31.5 dB to –34.5 dB) 1 1.5 2.0 dB Step Size: M_IN (All Steps Tested) (0 dB to –39 dB) 2.5 3.0 3.6 dB (–42 dB to –45 dB) 2.2 3.0 3.85 dB Input Gain/Attenuation Range: AUX1, AUX2, LINE, MIC 45.0 46.5 49.0 dB Input Gain/Attenuation Range: M_IN 42 45 49 dB DIGITAL DECIMATION AND INTERPOLATION FILTERS* Min Max Units Passband 0 0.4 × F S Hz Passband Ripple ±0.1 dB Transition Band 0.4 × F S 0.6 × F S Hz Stopband 0.6 × F S ∞ Hz Stopband Rejection 74 dB Group Delay 15/FS Group Delay Variation Over Passband 0.0 µs *Guaranteed, not tested. DAC Test Conditions Calibrated 0 dB Relative to Full Scale 16-Bit Linear Mode 10 k Ω Output Load Mute Off, OL = 0 ADC Test Conditions Calibrated 0 dB Gain –1.0 dB Relative to Full Scale Line Input 16-Bit Linear Mode REV. C –2– |
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