ChipSourceTek-CST8102A audio amplifier chip technology summary

1. ChipSourceTek-CST8102A core parameters

Working MODE: Class AB/Class D can be switched (controlled by MODE pin)
Output power:
Class D mode: 6W@7V/4Ω (THD+N=10%)
Class AB mode: 5.2W@5V/2Ω (THD+N=10%)
Operating voltage: 2.5-7.0V wide range
Efficiency: Class D mode >90%
Package form: ESOP8 with heat sink

2, ChipSourceTek-CST8102A technical highlights

Anti-interference design:
FM mode no interference technology
New filterless architecture
Enter the cable packing suggestion
Dynamic enhancement technology:
DRC dynamic range control technology
Waveform top cutting distortion suppression
Protection mechanism:
Overtemperature protection (triggered by junction temperature >160℃)
Short circuit protection
POP-click noise suppression

3, ChipSourceTek-CST8102A application adaptation

Typical application scenarios:
Battery powered devices (turn-off current <1μA)
Compact audio system (ESOP8 package)
High-fidelity demand scenarios (THD+N as low as 10%)
Industry adaptation:
Smart home: Door lock voice system
Security equipment: monitoring voice alarm
Portable audio: Adaptive for Bluetooth /USB speakers

4. ChipSourceTek-CST8102A PCB design specification

Power processing:
VDD adopts multiple holes in parallel (aperture ≥0.3mm)
Power capacitor spacing <2mm
Signal processing:
Input RC Network Sticking Chip (Cin+Rin)
Signal cable spacing ≥3 times cable width
Thermal design:
The bottom cooling pad is connected to the copper area above 2cm²
Recommended copper exposure treatment (area ratio >30%)
Output wiring:
Line width ≥0.4mm (1oz copper thickness)
Cable length <20mm

5. ChipSourceTek-CST8102A selection comparison suggestion

Mode selection:
Class D Mode: Priority energy efficiency Scenario (Battery equipment)
Class AB Mode: EMI Sensitive Scenarios (FM co-existence)
Load matching:
4Ω load 7V power supply is recommended
2Ω load ≤5V Power supply
Heat dissipation requirements:
For more than 3W, heat dissipation should be strengthened
PCB copper thickness recommended 2oz (high power application)
With its superior EMI performance and flexible architecture design, the ChipSourceTek-CST8302A is particularly suited to balance energy efficiency and sound quality in compact audio systems, and its patented DRC technology effectively solves the problem of large dynamic range output for small devices.