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AK4536 Datasheet(PDF) 8 Page - Asahi Kasei Microsystems |
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AK4536 Datasheet(HTML) 8 Page - Asahi Kasei Microsystems |
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8 / 59 page  ASAHI KASEI [AK4536] MS0174-E-00 2002/09 - 8 - FILTER CHRACTERISTICS (Ta = 25 °C; AVDD, DVDD, SVDD =2.4 ∼ 3.6V; fs=8kHz) Parameter Symbol min typ max Units ADC Digital Filter (Decimation LPF): Passband (Note 18) ±0.16dB -0.66dB −1.1dB −6.9dB PB 0 - - - 3.5 3.6 4.0 3.0 - - - kHz kHz kHz kHz Stopband (Note 18) SB 4.8 kHz Passband Ripple PR ±0.1 dB Stopband Attenuation SA 68 dB Group Delay (Note 19) GD 17.1 1/fs Group Delay Distortion ∆GD 0 µs ADC Digital Filter (HPF): Frequency Response (Note 18) −3.0dB −0.5dB −0.1dB FR - - - 1.25 3.56 8.14 - - - Hz Hz Hz DAC Digital Filter: Passband (Note 18) ±0.12dB −6.2dB PB 0 - 4.0 3.6 - kHz kHz Stopband (Note 18) SB 4.4 kHz Passband Ripple PR ±0.06 dB Stopband Attenuation SA 43 dB Group Delay (Note 19) GD 16.9 1/fs Group Delay Distortion ∆GD 0 µs DAC Digital Filter + Analog Filter: Frequency Response: 0 ∼ 3.4kHz FR ±1.0 dB Note 18. The passband and stopband frequencies are proportional to fs (system sampling rate). For example, ADC is PB=0.45*fs (@-1.1dB). A reference of frequency response is 1kHz. Note 19. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the 16-bit data of a channel from the input register to the output register of the ADC. This time includes the group delay of the HPF. For the DAC, this time is from setting the 16-bit data of a channel from the input register to the output of analog signal. DC CHRACTERISTICS (Ta = 25 °C; AVDD, DVDD, SVDD=2.4 ∼ 3.6V) Parameter Symbol min typ max Units High-Level Input Voltage Low-Level Input Voltage Input Voltage at AC Coupling (Note 20) VIH VIL VAC 70%DVDD - 50%DVDD - - - - 30%DVDD - V V Vpp High-Level Output Voltage (Iout= −80µA) Low-Level Output Voltage (Iout= 80 µA) VOH VOL DVDD −0.4 - - - - 0.4 V V Input Leakage Current Iin - - ±10 µA Note 20. When AC coupled capacitor is connected to MCKI pin. |
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