Inputs and Outputs
3.3.6Inputs and Outputs
The TI
3.3.6.1Inputs
In most cases, audio signals enter the platform through either a pair of RCA phono jacks (J3 and J5) or a miniature (1/8″ ) stereo phone jack (J4). Certain signal conditioning and amplifier EVMs, however, may have additional signal input connectors mounted on the module circuit board.
The platform audio signal input jacks (J3, J4, and J5) are of the
3.3.6.2Outputs
When the TPA0103 EVM is installed, amplified audio output signals leave the platform through the negative left and right compression connectors for stripped speaker wires (J8) and through a miniature (1/8″ ) stereo phone jack (J10), for headphones.
The TPA0103 EVM BTL center channel audio output from amplifier IC leave the platform via the left and right negative (black) compression connectors of J8. The positive (red) connectors of J8 are not used. Each output is isolated from system ground allowing the TPA0103 center channel power amplifier to operate in the
The platform headphone jack (J10) is capacitively coupled to source select switch S3, which connects J10 to the output lines of either the headphone amplifier socket or the power amplifier sockets (Figure 3±6). When the TPA0103
Figure 3±8. Typical Headphone Plug
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Details