Active Member
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[China]
Address: Room 36B1-B2, Building C, Electronics Science & Technology Building Shennan Mid-Road, Shenzhen China
Contact name:Sharon Yang
Anterwell Technology Ltd. |
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STK403-030 Fraunhofer IAF Freiburg Split Power Supply Module SIP
STK403-030 AF Power Amplifier (Split Power Supply)
(35 W min, THD = 0.08%)
Features
• Compact packaging supports slimmer set designs (up to 70 W)
• Series designed for 20 up to 100 W (200 W) and pincompatibility (120 to 200 W have 18 pins)
• Simpler heat sink design facilitates thermal design of slim stereo sets
• Current mirror circuit application reduces distortion to 0.08%
• Supports addition of electronic circuits for thermal shutdown and load-short protection circuit as well as pop noise muting which occurs when the power supply switch is turned on and off
Specifications Maximum
Ratings at Ta = 25°C
| Parameter | Symbol | Conditions | Ratings | Unit |
| Maximum supply voltage | Vcc Max | ±45 | V | |
| Thermal resistance | θj-c | 2.1 | °C/W | |
| Junction temperature | Tj | 150 | ºC | |
| Operating substrate temperature | Tc | 125 | ºC | |
| Storage temperature | Tstg | -30 to +125 | ° | |
| Available time for load shorted | tS* | VCC = ±30 V, RL = 8 Ω, f = 50 Hz, PO = 35 W | 2 | s |
Description of External Parts
R1, C1 : Input filter circuit
• Reduces high-frequency noise.
C2 : Input coupling capacitor
• DC current suppression.
A reduction in reactance is effective because of increases in capacitor reactance at low frequencies and 1/f noise dependence on signal source resistance which result in output noise worsening.
R2 : Input bias resistor
• Biases the input pin to zero.
• Effects VN stability (refer to NF circuit).
• Due to differential input, input resistance is more or less determined by this resistance value.
R4, R5 : NFB circuit (AC NF circuit). Use of resistor with 1% error is suggested.
