SL1062A

System Logic

Semiconductor

SLS

For measuring gain from MIC+ and MIC- the MUTE input should be HIGH.

For measuring the DTMF input, the MUTE input should be LOW or open-circuit.

Inputs not being tested should be open-circuit.

Figure 3. Test circuit for defining SL1062A voltage gain of MIC+, MIC- and DTMF inputs.

Figure 4. Equivalent circuit of SL1062A anti-sidetone bridge