Datasheet

Maxim Integrated │ 168
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
Unused Pins
Table 92 shows how to connect the devices unused
pins when circuit blocks are disabled. If the system is
extremely noisy or there is a concern that unused analog
Table 92. Unused Pin Connections
inputs might be enabled, then alternatively unused analog
audio inputs can be AC coupled to AGND (if component
cost and area allow it).
PIN NAME CONNECTION PIN NAME CONNECTION
SUPPLY PLANES ANALOG AUDIO OUTPUTS
AVDD Always connect HPL Unconnected
AGND Always connect HPR Unconnected
HPVDD Always connect HPSNS AGND
HPGND Always connect SPKLP Unconnected
DVDD Always connect SPKLN Unconnected
DVDDIO Always connect SPKRP Unconnected
DGND Always connect SPKRN Unconnected
SPKVDD Always connect RCVP / LOUTL Unconnected
SPKLVDD Always connect RCVN / LOUTR Unconnected
SPKRVDD Always connect DIGITAL AUDIO INTERFACE
SPKLGND Always connect SDIN DGND
SPKRGND Always connect SDOUT Unconnected
CHARGE PUMP MCLK Always connect
CPVDD Unconnected LRCLK DGND
CPVSS Unconnected BCLK DGND
C1P Unconnected I
2
C INTERFACE
C1N Unconnected SCL Always connect
ANALOG AUDIO INPUTS SDA Always connect
IN1/DMD Unconnected IRQ Unconnected
IN2/DMC Unconnected OTHER
IN3 Unconnected MICBIAS Unconnected
IN4 Unconnected JACKSNS Unconnected
IN5 Unconnected BIAS Always connect
IN6 Unconnected REF Always connect