PT2037
APPLICATION CIRCUIT
POWER
2
1
VDD
MCU
GND
50
22uF
100n
OUTPUTS
OUT_LF
4.7uF
OUT_RF
OUT_LR
1
2
3
4
5
6
7
TREB_R
33
OUT_RF
4.7uF
4.7uF
18nF
22nF
5.6nF
IN_R
OUT_LR 32
MID_LI 31
MID_LO 30
OUT_RR 29
SMEXT 28
MUXOUT_R
LOUD_R
2.7K
47nF
OUT_RR
DIFFG_R
DIFF_R
ST4_R
ST1_R
ST2_R
ST3_R
MONO
DIFFGND_R
DIFF_R
4.7uF
4.7uF
PT2037
4.7uF
STEREO4_R
STEREO1_R
STEREO2_R
BASS_RO 27
BASS_RI 26
BASS_LO 25
BASS_LI 24
100nF
100nF
100nF
100nF
22nF
470nF
470nF
470nF
470nF
470nF
5.6K
5.6K
2.7K
8
9
10 STEREO3_R
11 MONO
MID_RO
23
INPUTS
18nF
DIFFG_L
DIFF_L
ST4_L
ST1_L
ST2_L
ST3_L
2.2uF
Notes:
1. AGND and DGND trace on the PCB layout must be separated, tight separated GND path together on the bypassing capacitor negative terminal.
A 50Ω resistor on the DGND path could minimize the I2C noises to interference audio outputs.
2. Refer the differential input section description to achieve correspond wiring instruction.
V1.2
2
October 2009
PTC [ PRINCETON TECHNOLOGY CORP ]
