MAX98090AETL+ Maxim Integrated, MAX98090AETL+ Datasheet - Page 138
MAX98090AETL+
Manufacturer Part Number
MAX98090AETL+
Description
Interface - CODECs 5V 130mW Stereo Headphone Amp
Manufacturer
Maxim Integrated
Datasheet
1.MAX98090BETL.pdf
(166 pages)
Specifications of MAX98090AETL+
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MAX98090
Headphone Ground Sense
To improve channel isolation, the device has a low-side
headphone sense (HPSNS) that senses the ground
return of the headphone load. For optimal performance,
connect the headphone sense line through an isolated
Figure 38. Headphone Output Ground Sense Connections
www.maximintegrated.com
HEADPHONE
HEADPHONE
RIGHT PGA
LEFT PGA
OPTIMAL GROUND SENSE CONFIGURATION
HPSNS
HPR
HPL
SENSE TRACE
ISOLATED HP
OUTPUT JACK
HEADPHONE
CODEC
GROUND
PLANE
trace to a point as close as possible to the ground pole of
the headphone jack (Figure 38). If this is not possible, or
if headphone sense is not used, connect it to the analog
ground plane. In this configuration, channel isolation can
be degraded, resulting in increased channel-to-channel
crosstalk.
Ultra-Low Power Stereo Audio Codec
HEADPHONE
HEADPHONE
RIGHT PGA
LEFT PGA
ALTERNATIVE GROUND SENSE CONFIGURATION
HPSNS
HPR
HPL
TO GROUND
HP SENSE
Maxim Integrated │ 138
OUTPUT JACK
HEADPHONE
CODEC
GROUND
PLANE
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