AK4309BVM AKM [Asahi Kasei Microsystems], AK4309BVM Datasheet - Page 10

• Manufacturer Part Number: AK4309BVM
• Description: 16BIT SCF DAC FOR MULTIMEDIA
• Manufacturer: AKM [Asahi Kasei Microsystems]

ASAHI KASEI
When the input data at both channels are continuously zeros for 8192 LRCK cycles, DZF goes to "H". DZF
immediately goes "L" if input data are not zero after going DZF "H".
The AK4309B should be reset once by bringing RST "L" upon power-up. The AK4309B is powered up and the
internal timing starts clocking by LRCK " " after exiting reset and power down state by MCLK. The AK4309B is
in power-down mode until LRCK is input.
Figure 3 shows the system connection diagram. An evaluation board[AKD4310] is available which
demonstrates the optimum layout, power supply arrangements and measurement results.
0177-E-00
Zero detection
System Reset
Notes:
- LRCK=fs, BICK 32fs, MCLK=256fs at CKS="L", MCLK=384fs at CKS="H".
- Power lines of AVDD and DVDD should be distributed separately from the point
- When AOUT drives some capacitive load, some resistor should be added
- The capacitor value on VCOM depends on low frequency noise level of power supply.
with low impedance of regulator etc.
in series between AOUT and capacitive load.
Figure 3 . Typical Connection Diagram
SYSTEM DESIGN
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[AK4309B]
1997/6