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KX-TG9333PK/KX-TG9334PK/KX-TGA931T
4.8.
Circuit Operation (RF Part)
General Description:
RF part includes Transmitter and Receiver functions. Digital signals (Mainly voice data) that come from DSP, are modulated and
are transmitted. On the other hand, received signals are demodulated and go out to DSP.
4.8.1.
Power Supply Circuit
As indicated below, the various voltages are supplied to each block.
V_PA, about 3.2 V at base unit or 3.1 V at handset, is supplied to the Power amplifier.
IC741 is 3.0 V at base unit or 2.7 V at handset Regulator and outputs VRF (3.0 V at base unit or 2.7 V at handset) by order of
RADIO_EN signal.
V_RF is approximately 4.0 V (Base Unit) or 3.1 V (Handset).
Summary of Contents for KX-TG9333PK - Expandable Cordless Phone
Page 2: ...2 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 28: ...28 KX TG9333PK KX TG9334PK KX TGA931T 4 10 Signal Route ...
Page 29: ...29 KX TG9333PK KX TG9334PK KX TGA931T RF part signal route ...
Page 34: ...34 KX TG9333PK KX TG9334PK KX TGA931T 7 1 2 Programming using the Direct Commands ...
Page 35: ...35 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 36: ...36 KX TG9333PK KX TG9334PK KX TGA931T 7 2 Error Messages ...
Page 37: ...37 KX TG9333PK KX TG9334PK KX TGA931T 7 3 Troubleshooting ...
Page 38: ...38 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 39: ...39 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 40: ...40 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 69: ...69 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 70: ...70 KX TG9333PK KX TG9334PK KX TGA931T 11 1 2 Handset ...
Page 71: ...71 KX TG9333PK KX TG9334PK KX TGA931T 11 1 3 Charger Unit ...
Page 72: ...72 KX TG9333PK KX TG9334PK KX TGA931T 11 2 How to Replace the Handset LCD ...
Page 73: ...73 KX TG9333PK KX TG9334PK KX TGA931T ...
Page 78: ...78 KX TG9333PK KX TG9334PK KX TGA931T Memo ...
Page 88: ...88 KX TG9333PK KX TG9334PK KX TGA931T Memo ...
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Page 101: ...101 KX TG9333PK KX TG9334PK KX TGA931T 15 3 Explanation of IC Terminals RF Part 15 3 1 IC701 ...