Products Mentioned

MAX97220A Production
The MAX97220 is a differential input DirectDrive® line driver/headphone amplifier. This device is capable of driving line level loads with 3VRMS into...
Datasheet
MAX97220A on Analog.com

MAX97220B Production
The MAX97220 is a differential input DirectDrive® line driver/headphone amplifier. This device is capable of driving line level loads with 3VRMS into...
Datasheet
MAX97220B on Analog.com

MAX97220E Production
The MAX97220 is a differential input DirectDrive® line driver/headphone amplifier. This device is capable of driving line level loads with 3VRMS into...
Datasheet
MAX97220E on Analog.com

MAX97220D Production
The MAX97220 is a differential input DirectDrive® line driver/headphone amplifier. This device is capable of driving line level loads with 3VRMS into...
Datasheet
MAX97220D on Analog.com

MAX97220C Production
The MAX97220 is a differential input DirectDrive® line driver/headphone amplifier. This device is capable of driving line level loads with 3VRMS into...
Datasheet
MAX97220C on Analog.com

How can I determine if the MAX97220 encounters a thermal-overload event?

The MAX97220A-MAX97220E provide thermal-overload protection by disabling the amplifier when the junction temperature exceeds 160°C. During a thermal-overload event, the charge-pump circuit is disabled which causes the negative PVSS rail to collapse. You could monitor the negative PVSS rail to determine if the part is active; however, this would require a negative threshold detector. Alternatively, the charge-pump circuit causes the C1P pin to swing between PVDD and PGND. Switching on the C1P pin stops when the charge-pump is disabled, so you could also monitor the positive referenced C1P pin with a comparator and LPF to determine when switching stops.
Tags: 000096885 product MAX97220AETE+ MAX97220

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