ASAHI KASEI. [AKD].. / – 7 -. [ADC Plot: fs=48kHz]. AKM. AK THD+N vs. Input Level. VA=VD=V, fs=48kHz, fin=1kHz. AKM Semiconductor AKET. Explore Integrated Circuits (ICs) on Octopart: the fastest AKET. Dual Channel Dual ADC Delta-Sigma 96ksps bit. The AK achieves high accuracy and low cost by using Enhanced dual bit ∆Σ WARNING: AKM assumes no responsibility for the usage beyond the.
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Lead frame surface treatment: If these clocks are not provided, the AK may draw excess current due to its use of internal dynamically refreshed logic. Resolution 24 Bits Input Voltage Note 4 2. The audio interface supports both master and slave modes.
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An evaluation board is available which demonstrates application circuits, the optimum layout, power supply arrangements and measurement results. AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
This value is the full scale 0dB of the input voltage. Table 1 shows the relationship of typical sampling frequency and the system clock frequency. The reference frequency of these responses is 1kHz. This time is from the input of an analog signal to the setting of 24bit data both channels to the ADC output register for ADC. Operation at or beyond these limits may result in permanent damage to the device. An electrolytic capacitor 2.
Before considering any use or application, consult the Asahi Kasei Microsystems Co. The AK requires no external components because the analog inputs are single-ended.
The Skm includes an anti-aliasing filter RC filter to attenuate a noise around 64fs. The cut-off frequency of the HPF is 1. Decoupling capacitors should be as near to the AK as possible, with the 53881 value ceramic capacitor being the nearest. In master mode, the internal timing starts when MCLK is input. System analog ground and digital ground should be connected together near to where the supplies are brought onto the printed circuit board.
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A hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property.
The digital filter rejects noise above the stop band except for multiples of 64fs. Alternatively if VA and VD are supplied separately, the power up sequence is not critical. All voltages with respect to ground. Grounding and Power Supply Decoupling The AK requires careful attention to power supply and grounding arrangements.
Voltage Reference The voltage input to VA sets the analog input range.
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The ADC outputs settle in the data corresponding to the input signals after the end 53811 initialization Settling approximately takes the group delay time. Normal operation is not guaranteed at these extremes.
The input signal range scales with the supply voltage and nominally 0. This reset should always be done after power-up. The passband and stopband frequencies scale with fs.
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All signals, especially clocks, should be kept away from the VCOM pin in order to avoid unwanted coupling into the AK An analog initialization cycle starts after exiting the power-down mode. VA and VD are usually supplied from the analog supply in the system. The AK samples the analog inputs at 64fs.
AKM sales office or authorized distributor concerning their current status. In slave mode, aom internal timing starts clocking by the rising edge falling edge at mode 1 of LRCK after exiting from reset and power down state by MCLK. Input voltage is proportional to VA voltage.
No load current may be drawn from these pins.
The power up sequence between VA and VD is not critical. Date Code Marketing Code: A critical component is one whose failure to function or perform may reasonably be expected to result, whether ajm or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. The amm delay time induced by digital filtering.
All digital input pins should not be left floating.