Datasheet

Maxim Integrated │ 151
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
Figure 45. Jack Detection Operation with External Pullup Resistance
HPSNS
HPR
HPL
MICBIAS
ANALOG
MIC INPUT
INTERNAL
PULLUP
DISABLED
JACK DETECT
COMPARATORS
DISABLED
V
IN+
V
IN-
JACKSNS
2.2kΩ
1µF
HI-Z
JDETEN = 0
JDWK = X
MBEN = 1
SHDN = 1
OPEN JACK
JDETEN = 1
JDWK = X
MBEN = 1
SHDN = 1
OPEN JACK
HI-Z
HI-Z
HI-Z
HI-Z
JDETEN = 1
JDWK = X
MBEN = 1
SHDN = 1
HEADPHONE
JACK
JDETEN = 1
JDWK = X
MBEN = 1
SHDN = 1
HEADSET
JACK
INTERNAL
PULLUP
DISABLED
SPKLVDD
SPKLVDD
INTERNAL
PULLUP
DISABLED
SPKLVDD
INTERNAL
PULLUP
DISABLED
SPKLVDD
HPSNS
HPR
HPL
MICBIAS
ANALOG
MIC INPUT
JACK DETECT
COMPARATORS
ENABLED
SHORT TO GND BIAS CURRENT
PULLUP PATH
V
IN+
V
IN-
JACKSNS
2.2kΩ
1µF
LSNS = 0
JKSNS = 0
LSNS = 0
JKSNS = 1
LSNS = 1
JKSNS = 1
LSNS /JKSNS =
LAST STATE
HPSNS
HPR
HPL
MICBIAS
ANALOG
MIC INPUT
JACK DETECT
COMPARATORS
ENABLED
V
IN+
V
IN-
JACKSNS
2.2kΩ
1µF
HPSNS
HPR
HPL
MICBIAS
ANALOG
MIC INPUT
JACK DETECT
COMPARATORS
ENABLED
V
IN+
V
IN-
JACKSNS
2.2kΩ
1µF
1µF
1µF
1µF
1µF
HEADPHONE DETECT (INTERNAL PULLUP)
JACK DETECTION DISABLED
1 2
3 4
HEADSET DETECT (INTERNAL PULLUP)
OPEN JACK DETECT (INTERNAL PULLUP)
1µF
GNDMIC RIGHT
LEFTRIGHTGND
LEFT
1µF
1µF
1µF