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Setting up Hardware VAD: Part 1/2 - Overview
• You can use the VA1210 as an ultra-low-power
hardware VAD by setting the MODE pin high. The
VA1210 will enter Zero-Power Listening (ZPL) mode,
where supply current is only 10uA .
• In ZPL mode, OUTP and OUTM are disabled, and the
DOUT pin will latch high when the VA1210 detects
that the wearer is speaking. DOUT can be reset low
by lowering the MODE pin (or with an I
• When the earbud speaker is producing sound at ~4.5kHz (VA1210 resonant
frequency), this can cause false DOUT triggers. So, we recommend using hardware
VAD when the speaker is not playing music or voice. Hardware VAD can be used
when ANC is enabled, because ANC does not produce output at 4.5kHz.
11
2
C command).
Vesper - Confidential
VA1210
ZPL module (hardware VAD)
with Dout pin
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