Data Sheet

EnzyTek Technology, Inc.
7F, No. 35, Hsueh Fu Rd., Hsinchu 300,
Taiwan , R.O.C.
TEL：[phone] FAX： [phone]
16/24
BT Stereo Headset Application Circuit
VDD_PADS
D1 LL4148
USB_5V
D2 LL4148VBAT
BT_VDD
BT_VDD
VDD33
VBAT
PIO3 PIO2
SYS-CTRL
I2S_OUT I2S_CLK I2S_IN I2S_SYNC
C23 4.7uF
BT_VDD
GND_A
PIO15
RESET
R12 NC
USB_DEV_DN USB_DEV_DP LED1 LED0
VDD_PADS
VCHG
C6 10uF/X7R
TBR_TX_D0 TBR_RX_CLK TBR_RX_D0
J10 CON3
1 2 3
R11 0R
PIO15
VDD33
TBR_RX_CLK
PIO23 LED5
PIO23
PIO17 PIO18 PIO19
PIO5 PIO4 TBR_RX_D0
TBR_TX_D0
PIO1
MIC_RN MIC_RP
PIO16
VCHG
U1
BTA-QC3021-3M
PIO19
5
PIO18
6
PIO17
7
PIO16
8
LED0
3
PIO22
23
LED5
24
LED2
25
PIO2
14
SYS_CTRL
16
PIO6
19
PIO7
20
PIO8
21
PIO23
22
PIO3
15
PIO4
16
SPKR_RP
26
SPKR_RN
27
SPKR_LN
26
SPKR_LP
29
PIO1
30
MIC_BIAS
31
MIC_RN
32
MIC_RP
33
MIC_LP
34
MIC_LN
35
PIO15
9
VDD_PADS
1
USB_DN
11
USB_DP
10
GND
13
LED1
4
VCC
12
PIO5
17
VCHG
2
BT_VDD
R29 680R
RGB
LED1
LED_RGB
4
1
2
3
R31 680R
LED0
R30 680R
LED1 LED2
C9 1uF
R22 1M
J4 M106
1 2 3 4 5
6 7
8 9
R20 0R
GND_A
J8
AJ390A-6-SMT
1 2 3 4 5 6
GND_A
GND_A
GND_A GND_A
GND_A
C12 0.1uF
R15 10K
U2 MAX97220A
LINN
14
LINP
15
SHDN
16
CIP
2
CIN
4
RINP
7
RINN
8
ROUT
10
PGND
3
PVDD
1
BIAS
11
PVSS
5
EP
17
SGND
6
SVDD
13
SVDD
9
LOUT
12
R18 10K
R25 10K
R14 10K
R24 10K
R26 10K
EAR_R
C8 1uF
C10 1uF
C7 1uF
C15 1uF
EAR_L
C11
1uF
C4 1uF C5 1uF
C18 1uF C17
1uF
R23 10K
EAR_L EAR_R
R19 10K
PHONE JACK
MIC_IN
GND_A
GND_A
R21 10K
R13 1K
MIC-BIAS
GND_A
L2
15nH
MIC IN
MIC_IN
C21 15pF R33 2.2K
C20
150nF
MICLN MICLP
C22 1uF
C16 NC
U3
S-1333
VDD
1
VSS
2
CE
3
NC
4
Vout
5
C14 4.7uF
C13 4.7uF
VDD33
J6 CON6A
1 2 3 4 5 6
USB_DEV_DP USB_DEV_DN
USB-DP USB-DN
VCHGUSB_5V
Q2
2N3904
R1 10K
BT_VDD
R16 22R
R8 10K
R17 22R
C1 1uF R5 10K
PIO2
R32 10K
SW2 HTS-4030E
PIO3
R34 10K
SW3 HTS-4030E
SYS-CTRL
R4 NC
Power on delay circuit
SW1 HTS-4030E
SYS-CTRL
R27 10K
L1 BEAD
R39 530R R40
530R
C27 5.1nF
SPKLP SPKLN
R42
530R
R41 530R
C28 5.1nF
SPKRN SPKRP
Low pass filter
MICLP MICLN
SPKRP
SPKRN SPKLN SPKLP MIC-BIAS
LED2
VBAT
BT2 BATTERY