Sharp LC-40LE361E Service Manual ▷ View online
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b. Features
• Audio Input/Output
• TAS5717 Supports 2×10 W and TAS5719 Supports 2×15 W Output.
• Wide PVDD Range, From 4.5 V to 26 V.
• Efficient Class-D Operation Eliminates Need for Heat sinks.
• Requires Only 3.3 V and PVDD.
• One Serial Audio Input (Two Audio Channels).
• I2C Address Selection via PIN (Chip Select).
• Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S).
• External Headphone-Amplifier Shutdown Signal.
• Integrated CAP-Free Headphone Amplifier.
• Stereo Headphone (Stereo 2-V RMS Line Driver) Outputs.
• Wide PVDD Range, From 4.5 V to 26 V.
• Efficient Class-D Operation Eliminates Need for Heat sinks.
• Requires Only 3.3 V and PVDD.
• One Serial Audio Input (Two Audio Channels).
• I2C Address Selection via PIN (Chip Select).
• Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S).
• External Headphone-Amplifier Shutdown Signal.
• Integrated CAP-Free Headphone Amplifier.
• Stereo Headphone (Stereo 2-V RMS Line Driver) Outputs.
• Audio/PWM Processing
• Independent Channel Volume Controls With 24-dB to Mute.
• Programmable Two-Band Dynamic Range Control.
• 14 Programmable Biquads for Speaker EQ.
• Programmable Coefficients for DRC Filters.
• DC Blocking Filters.
• 0.125-dB Fine Volume Support.
• Programmable Two-Band Dynamic Range Control.
• 14 Programmable Biquads for Speaker EQ.
• Programmable Coefficients for DRC Filters.
• DC Blocking Filters.
• 0.125-dB Fine Volume Support.
• General Features
• Serial Control Interface Operational Without MCLK.
• Factory-Trimmed Internal Oscillator for Automatic Rate Detection.
• Surface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package.
• AD, BD, and Ternary PWM-Mode Support.
• Thermal and Short-Circuit Protection.
• Factory-Trimmed Internal Oscillator for Automatic Rate Detection.
• Surface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package.
• AD, BD, and Ternary PWM-Mode Support.
• Thermal and Short-Circuit Protection.
• Benefits
• EQ: Speaker Equalization Improves Audio Performance
• DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker
• DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker
Protection, Easy Listening, Night-Mode Listening.
• Direct Path Technology: Eliminates Bulky DC Blocking Capacitors.
• Stereo Headphone/Stereo Line Drivers: Adjust Gain via External Resistors, Dedicated Active
• Stereo Headphone/Stereo Line Drivers: Adjust Gain via External Resistors, Dedicated Active
Headphone Mute Pin, High Signal-to-Noise Ratio.
• Two-Band DRC: Set Two Different Thresholds for Low- and High-Frequency Content.
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c. Pin descriptions and functions
Table 2: Pin functions
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LC-32/40LE360
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Figure 2: Pin Descriptions
Table 3: Recomnended operating conditions
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Table 4: Recommended operating conditions
C. HEADPHONE AMPLIFIER STAGE
Headphone is a SoC (single on chip) configuration in mainboard, design scheme is shown in figure 4.
Figure 4: Headphone
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