Kenwood TK-390 Service Manual

Also see for TK-390: Brochure & specs Quick guide Instruction manual Service manual Service manual

Contents

24TK-3902. D/A Converter : M62354GP (TX-RX Unit IC3)2-1. Terminal connection2-2. Block diagram2-3. Terminal functionPin No. Symbol I/O Function1 Do O 12-bit shift register MSB bit data isoutput.2 LD I When the LD is at the high level,the 12-bit shift register value isloaded to the D/A output register.3 CLK I Shift clock input. With the rise ofthe shift clock, the input signal fromthe DI is input to the 12-bit shiftregister.4 DI I Serial data input. Input serial data12 bits long.5,6 AO1, AO2 O 8-bit resolution D/A.7 NC – Not connected.8 GND – GND.9 Vss – Terminal for determining the D/Aconversion reference low side pointlevel.10 NC – Not connected.11~14 AO3~AO6 O 8-bit resolution D/A.15 VDD – Terminal for determining the D/Aconversion reference up side pointlevel.16 Vcc – Power supply.12345678DoLDCLKDIAo1Ao2NCGND161514131211109V CCVDDAo6Ao5Ao4Ao3NCASSM62354GP8 bitR-2R+SegmentD-A converter8 bitR-2R+SegmentD-A Converter+ –+ – + –8 bitLatch8 bitLatch+ –+ –+ –D11D10D9D8D7D6D5D4D3D2D1D0AddressDecoder....... .....12 bit Shift RegisterCh1 Ch2LLLLD-ABufferOP amp1 2 4 5 6 839111213141516D-A D-A D-ACh6 Ch5 Ch4 Ch3(6)(6)VCC VDD Ao 6 Ao 5 Ao 4 Ao 3 VSSGNDAo 2Ao 1DICLKLDDoSEMICONDUCTOR DATA3. RF Power Amplifier : XHW2727-2 (Control Unit IC501)3-1. Block diagram 3-2. Maximum ratings (Flange temperature = 25°C)Rating Symbol Value UnitDC supply voltage (Pins 3,4) VDD1,2 10 VdcDC control voltage (Pin 2) Vcont 10 VdcRF input power Pin 40 dBmRF output power (V DD1,2 =9V) Pout 9 WOperating case temperature range Tc –30 to +100 °CStorage temperature range Tstg –30 to +100 °C1 2 3 4 5