Product Info

VTech proprietary and confidential
VTech Communications LTD.
R&D Department
The document is VTech’s proprietary information, Please do not disclose to third party without VTech’s consent
Ref. No.: 20191009 Version: 01 Date: 09 Oct, 2019 Page 18 of 33
Figure 7-5 Differential input
Figure 7-6 Single-ended input
7.2.6 Output stage
The output stage digital circuitry converts the signal from 16 bit per sample, linear PCM of variable sampling frequency to bit
stream, which is fed into the analog output circuitry.
The analog output circuit comprises a DAC, a buffer with gain-setting, a low pass filter, and a class AB output stage amplifier.
Figure 7-7 shows that the output is available as a differential signal between SPKR_LN and SPKR_LP for the left channel,
and between SPKR_RN and SPKR_RP for the right channel.