AK4371VN AKM [Asahi Kasei Microsystems], AK4371VN Datasheet - Page 59

• Manufacturer Part Number: AK4371VN
• Description: DAC with built-in PLL & HP-AMP
• Manufacturer: AKM [Asahi Kasei Microsystems]

Figure 45 shows the system connection diagram. An evaluation board [AKD4371] is available which demonstrates the
optimum layout, power supply arrangements and measurement results.
MS0596-E-00
Analog Supply
Notes:
Headphone
1.6∼3.6V
- VSS1, VSS2 and VSS3 of the AK4371 should be distributed separately from the ground of external controllers.
- All digital input pins (I2C, SDA/CDTI, SCL/CCLK, CAD0/CSN, SDATA, LRCK, BICK, MCKI, PDN) must
not be left floating.
- When the AK4371 is in EXT mode (PMPLL bit = “0”), a resistor and capacitor for the VCOC pin is not needed.
- When the AK4371 is in PLL mode (PMPLL bit = “1”), a resistor and capacitor for the VCOC pin should be
connected as shown in Table 4
- When the AK4371 is used in master mode, LRCK and BICK pins are floating before the M/S bit is changed to
“1”. Therefore, a 100kΩ pull-up resistor should be connected to the LRCK and BICK pins of the AK4371.
- When DVDD is supplied from AVDD via 10Ω series resistor, the capacitor larger than 0.1μF should not be
connected between DVDD and the ground.
16Ω
220µ
+
16Ω
Analog Ground
Digital Ground
220µ
Figure 45. Typical Connection Diagram (In case of AC coupling to MCKI)
+
+
10µ
10
25
26
27
28
29
30
31
32
HPR
HPL
RIN2
LIN2
RIN3
LIN3
RIN1
LIN1
0.1µ
SYSTEM DESIGN
AK4371VN
0.1µ
Top View
2.2µ
Audio Controller
- 59 -
+
0.22µ
Handsfree
Rp
Cp
MUTET
I2C
PDN
CSN
CCLK
CDTI
MCKO
VSS3
16
15
14
13
12
11
10
9
1µ
SPK-Amp
µP
Speaker
[AK4371]
2007/04