AK4358VQ AKM Semiconductor Inc, AK4358VQ Datasheet - Page 23

• Manufacturer Part Number: AK4358VQ
• Description: IC DAC 24BIT SERIAL 48LQFP
• Manufacturer: AKM Semiconductor Inc

Specifications of AK4358VQ

• Number Of Bits: 24
• Data Interface: I²S, Serial
• Number Of Converters: 8
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Settling Time: -
• Other names: 974-1008-2

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When RSTN=0, DAC is powered down but the internal register values are not initialized. The analog outputs go to
VCOM voltage and DZFL/DZFR pins go to “H”.
Notes:
MS0203-E-02
Reset Function
(1) The analog output corresponding to digital input has the group delay (GD).
(2) Analog outputs go to VCOM voltage.
(3) Click noise occurs at the edges(“↑ ↓”) of the internal timing of RSTN bit. This noise is output even if “0” data is
(4) The external clocks (MCLK, BICK and LRCK) can be stopped in the reset mode (RSTN = “L”).
(5) DZF pins go to “H” when the RSTN bit becomes “0”, and go to “L” at 2/fs after RSTN bit becomes “1”.
(6) There is a delay, 3~4/fs from RSTN bit “0” to the internal RSTN bit “0”, and 2~3/fs from RSTN bit “1” to the
Internal
D/A In
D/A Out
Clock In
MCLK,LRCK,BICK
RSTN bit
Internal
RSTN bit
DZF
input.
internal RSTN “1”.
(Digital)
(Analog)
State
Normal Operation
(1)
Figure 16. Reset Sequence Example
GD
Figure 16
(3)
Digital Block Power-down
- 23 -
3~4/fs (6)
shows the example of reset by RSTN bit.
“0” data
(4)
Don’t care
(2)
(3)
2~3/fs (6)
2/fs(5)
Normal Operation
GD
(1)
[AK4358]
2009/05