3)
The Pi-DigiAMP+
The Pi-DigiAMP+ is a fully HAT compliant add-on accessory for the Raspberry Pi.
The Pi-DigiAMP+ takes the digital audio signals (I2S) from the Raspberry Pi and through the onboard
Texas Instruments TAS5756M PowerDAC delivers direct connection to stereo speakers at up to
2x35w with variable output. Adjustable gain (+20db or +26db) is selectable by a pin header P7 (not
shown below). Only remove and set this when NO POWER IS APPLIED.
The Pi-DigiAMP+ can be connected to the Raspberry Pi A+/B+/RPi2’s 40way pin header without any
additional soldering. The Pi-DigiAMP+ requires a 12-19volt power source to operate. Power should
be applied via the Pi-DigiAMP+’s standard barrel connector or the two pin JST socket provided.
The Pi-DigiAMP+, when powered, has been designed to provide power to the Raspberry Pi and Pi-
DigiAMP+ combination safely. You can continue to use your Pi devices without risk of damage. The
Pi-AMP+ is by default muted at power on (mute LED lit). Mute state / LED is under software control
(Raspberry Pi GPIO22). Component selection and track layout have been in the forefront of our
design to ensure noise immunity and best possible audio playback / experience with the Pi-DigiAMP
+.
Power LED Mute LED GPIO Header
!
15v Power In Speaker Terminals
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