AK4205EN Datasheet, PDF (21/25 Pages) Asahi Kasei Microsystems – Ultra Low Noise and Distortion Headphone Amp with Analog Switch

[AK4205]
10.2 Example of the connection with AK4492
The AK4492 is a 32-bit 2ch Premium DAC. Ultra low distortion characteristics are realized by distortion
reduction technology. The digital input supports up to 768 kHz PCM and 11.2 MHz DSD (Direct Stream
Digital), making the AK4205 suitable for high-resolution sound source playback that is becoming popular
with smart phones, audio players and etc.
A connection example with the AK4492 is shown below. VSS and DVSS should not interfere each other
by the layout design.
Power Supply
6V
BICK
SDATA
LRCK
0.1F
MCLK
0.1F
51ohm
0.1F
DVSS
DVDD
0V _1F 1.8V
AK4492
BICK/BCK/DCLK(J1)
SDATA/DINL/DSDL(H1)
LRCK/DINR/DSDR(G1)
SMUTE/CSN(F1)
SLOW/CDTI/SDA(E1)
DIF0/DZFL(D1)
DIF1/DZFR(C1)
DEM0/DSDL(B1)
DVSS(K2)
TVDD(J2)
PDN(H2)
SSLOW/WCK(G2)
TDMO(F2)
SD/CCLK/SCL(E2)
DIF2/CAD0(D2)
HLOAD/I2C(C2)
GAIN/DSDR(B2)
ACKS/CAD1(A2)
DVDD(K3)
MCLK(J3)
LDOE(H3)
PSN(D3)
TDM1(B3)
TDM0/DCLK(A3)
AVDD(K4)
AVSS(J4)
DCHAIN(B4)
INVR(A4)
TESTE(B5)
VREFHR(A5,A6)
VREFLR(A7,A8)
VCMR(B8)
AOUTRN(A9)
AOUTRP(B9)
VDDR(C9,C10,D9)
VSSR(D10,E9,E10)
VSSL(F9,F10,G10)
VDDL(G9,H9,H10)
AOUTLP(J9)
AOUTLN(K9)
VCML(J8)
VREFLL(L7,K8)
VREFHL(K5,K6)
NC
EXTR(J5)
External
Regulator Circuit
1F
1F
DC 2.5V
DC 2.5V
1F
DC 2.5V
DC 2.5V
1F
External
Regulator Circuit
33kohm
VSS
DVSS VSS
0V
VDD
5V
Power Supply
-5V
10u 10u
0.1u 0.1u
AUX In
(Ach)
MUTEN
1 NINA
2 PINA
3 AVSSA
4 NC
5 RVDD
10u 0.1u
6 RVSS
7 AVSSB
8 PINB
9 NINB
Rd
33
AK42^A0^K5⁴²⁰⁵
Top View
Rd
33
0.1u 0.1u
10u 10u
Headphone
Rch
AUXA
SWOUTA 27
470n
NC 26
NC 25
CAPSS 24
SWVDD 23
SWVSS 22
Css=0.1u
5VRWM
Zener
diode
SWVDD 3.3V
0.1u 10u
SEL 21
NC 20
SWOUTB 19
AUXB
470n
5VRWM
Zener
diode
Headphone
Lch
AUX In
(Bch)
ACPU
Figure 16. Circuit Example with AK4205 and AK4492
016012367-E-00
- 21 -
2016/12