德信 EUTECH

The EUA2811 is a 20-W, digital audio power amplifier with 4 half-bridged power drivers. The EUA2811 is a slave device that all clocks are provided by the external sources. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors. A bidirectional I²C interface allows reading or writing to change the internal register status.

Advanced EMI Suppression Technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements for system cost reduction.

The EUA2811 also features short-circuit and thermal protection preventing the device from being damaged during a fault condition. The EUA2811 is available in thermally efficient 48-pin TQFP package.

• • Audio Input/Output
• - Wide Power Supply Voltage: 8 V to 26 V
• - Digital Supply: 3.3V
• - 20W/ch an 8-Ω Load from an 18-V Supply
• - 40W an 4-Ω Mono load from an 18-V supply
• - Supports 8 kHz - 192 kHz Sample Rates Serial Audio Input (LJ/RJ/I²S)
• - Bidirectional I²C interface
• - Slave Address Pin
• - Support 3-wire I²S Mode (No MCLK Required)
• - Support BTL and PBTL Configuration
• • Audio Processing
• - DC Blocking Filters
• - Channel Volume Control 24 dB to mute
• - 20 Biquads for Speaker EQ
• - Programmable 3-Band Automatic Gain Limiting (AGL)
• - 3D Effects
• • Benefits
• - EQ: Speaker Equalization Improves Audio Performance
• - DRC: Enables Speaker Protection and Night-Mode Listening
• - Soft Mute
• - Auto detect: Automatically Detects Sample-rate Changes
• - Thermal and short circuit protection
• • Available in TQFP-48 (EP) Package
• • RoHS compliant and 100% lead(Pb)-free Halogen-Free

• • LCD TV
• • Low Cost Audio Equipment
• • Sound Bar