Test Procedure for the STK433-040NGEVB Evaluation Board Characteristics confirmation [Connection Diagram] Output load (RL=6Ω) CH2 Output load (RL=6Ω) CH1 OSC OUTPUT (600Ω) CH1 Signal OSC OUTPUT (600Ω) CH2 Signal GND GND Constant-voltage supply Stand-By Stand-By Control Active : 5V Stand-By : 0V GND Sound quality confirmation, load short-circuit test, noise examination [Connection Diagram] Speaker(R) Speaker(L) Music source (L) Signal GND Music source (R) 10000F +Vcc Signal DBA40C + 500Ω GND + 500Ω Stand-By Control Active : 5V Stand-By : 0V -Vcc 10000F Specified Transformer Power Supply STK433-040N-E (Equivalent to MG-200) 12/30/2013 1 www.onsemi.com [Required Equipment] Equipment Power supply +Vcc Power supply -Vcc Power supply Stand-By Control Load Measurement Efficiency 50V-5A 50V-5A 10V-1A 6Ohm ( Non-inductive load ) Audio analyzer (Panasonic VP-7723B) [Supply Voltage] +Vcc/-Vcc : Power Supply for audio power amplifiers Output 1 (10%/1kHz) 40W x 2 ch Output 2 (0.4%/2Hz-20kHz) Recommended operating Vcc (6Ohm) 25W x 2 ch ± 24V Stand-By Control (5V) : Power Supply for Stand-By Control Input 5V : Operation / 0V : Stand-by [Operation Guide] 1. Installation of the heat sink 2. Load Connection 3. Power Supply Connection 4. Stand-By Control Connection 5. Input Connection Please refer to a thermal design tip for the amplifier. Connect the RL=6Ω (Non-inductive load) Connect the +Vcc/-Vcc (Output off : 0V) Stand-By Control = 0V . Stand-by Connect the Oscillator (Sine wave / Output resistance 600Ω) The gain of the evaluation board is set in 30dB. At first, supply DC voltage to +Vcc and -Vcc. Next, Stand-By Control = 5V . Operation 6. Power Supply +Vcc=+24V/-Vcc=-24V VIN=389mVrms VO=12.3Vrms(PO=25W) CH1 IN CH1 OUT (CH2 IN) (CH2 OUT) IF NF 6Ohm 56kOhm 1.8kOhm GAIN： 30dB 12/30/2013 2 www.onsemi.com