AK5358BETP AKM Semiconductor Inc, AK5358BETP Datasheet - Page 16

• Manufacturer Part Number: AK5358BETP
• Description: IC ADC AUDIO STER 24BIT 16TSSOP
• Manufacturer: AKM Semiconductor Inc
• Type: ADCr

Specifications of AK5358BETP

• Resolution (bits): 24 b
• Sampling Rate (per Second): 8k ~ 96k
• Data Interface: I²S, Serial
• Voltage Supply Source: Analog and Digital
• Voltage - Supply: 5V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 974-1029-2; AK5358BETP

[AK5358B]
1. Grounding and Power Supply Decoupling
The AK5358B requires careful attention to power supply and grounding arrangements. Alternatively if VA and VD are
supplied separately, the power up sequence is not critical. VSS1 and VSS2 of the AK5358B must be connected to
analog ground plane. System analog ground and digital ground should be connected together near to where the supplies
are brought onto the printed circuit board. Decoupling capacitors should be as near to the AK5358A as possible, with the
small value ceramic capacitor being the nearest.
2. Voltage Reference
The voltage input to VA sets the analog input range. VCOM are 50%VA and normally connected to VSS1 with a 0.1μF
ceramic capacitor. A capacitor 2.2μF is attached to VCOM pin. No load current may be drawn from these pins. All
signals, especially clocks, should be kept away from the VCOM pin in order to avoid unwanted coupling into the
AK5358B.
3. Analog Inputs
The ADC inputs are single-ended and internally biased to the common voltage (50%VA) with 20kΩ (typ@fs=48kHz)
resistance. The input signal range scales with the supply voltage and nominally 0.6xVA Vpp (typ). The ADC output data
format is 2’s complement. The internal HPF removes the DC offset.
The AK5358B samples the analog inputs at 64fs (@fs=48kHz). The digital filter rejects noise above the stop band except
for multiples of 64fs. The AK5358B includes an anti-aliasing filter (RC filter) to attenuate a noise around 64fs.
MS1155-E-00
2010/02
- 16 -