PAMS5825

Description

The PAMS5825 is a fully integrated, high-efficiency, stereo Class-D audio amplifier with digital inputs. The application circuit requires few passives components to operate with 4.5V to 21V PVDD supply, 3.3V or 1.8V DVDD supply. It can drive 2×33W output power into BTL 6Ω and 1×51W into PBTL 4Ω@1% THD+N.

The PAMS5825 features one novel PWM modulation architecture, which adjusts PWM common duty cycle during startup phase to avoid startup pop click.

Spread spectrum technology provides lower EMI radiated emissions. It allows inductor-free application with specified output power situation with PAMS5825.

The advanced audio effect tuning capability inside PAMS5825 provides one highly integrated solution. It allows turning on/off each block with highly free operations. Both pre and post BQs/volume help a lot to maintain audio headroom. Furthermore, 3 band DRC with time delay buffer and post compensation BQs is available to implement flexible and flat multiple band control.

The PAMS5825 supports the TSSOP-28EP (Type TH-1) package.

Feature(s)

• Flexible Power-Supply Configurations
  • PVDD: 4.5V to 21V
  • DVDD and I/O: 3.3V or 1.8V
• Various Output Configurations
  • 2×33W, Stereo Mode (6Ω, 21V, THD+N = 1%)
  • 1×51W, Mono Mode (4Ω, 21V, THD+N = 1%)
• Excellent Audio Performance
  • THD+N ≤ 0.04% at 1W, 1kHz, PVDD = 12V
  • 112 dB A-Weighted Signal-to-Noise Ratio (SNR)
  • Idle Switching A-Weighted Noise ≤ 35µVRMS
  • 23.5mA Low Quiescent Current
  • 90% Efficiency into 6Ω Load at 12V
• Configurable Digital Audio Interface
  • I2C Control with up to 4 Selectable Addresses
  • I2S, Left-Justified, Right-Justified, TDM Audio Format
  • 3-Wire Digital Audio Interface Without MCLK Required
  • 32kHz, 44.1kHz/48kHz, 88.2kHz/96kHz, 176.4kHz/192kHz Input Sample Rate
  • SDOUT for Acoustic Echo Cancellation – AEC or 1.1/2.1 System Sub-Channel Signal Routing
• Advanced Audio Effect Tuning
  • Flexible Digital and Analog Gain Adjustment
  • Highpass Filter for DC Blocking
  • Input Signal Router for Left and Right Channel
  • 2×15 Pre BQs & 2×5 Post BQs to Support Enhanced Audio Frequency Tuning
  • Pre Volume & Post Volume for Dynamic Headroom and Loudness Control
  • 3 Band Dynamic Range Control (DRC) with Time Delay Buffer & Post Compensation BQs for Flexible and Flat Multiple Band Control
• Analog Protections
  • FAULT Status Report Through GPIO and I2C Registers
  • Overcurrent and Direct Current Protection
  • Overtemperature Protection
  • Undervoltage and Overvoltage Protection
  • Clock Error Protection
• TSSOP-28EP (Type TH-1) Package
• Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative.  https://www.diodes.com/quality/product-definitions/

Application(s)

• Portable speakers: Bluetooth, smart speakers with voice assistant
• Home audio: TV, soundbar, STB (set top box), HTiB (home theatre in a box)
• Smart appliances
• PCs and laptops