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MaximIC
Maxim Integrated
Description : Stereo CLASS D Audio Subsystem with DirectDrive Headphone Amplifier

General Description
The MAX9879 combines a high-efficiency Stereo CLASS D Audio Power Amplifier with a Stereo capacitor-less DirectDrive® Headphone Amplifier. Maxim’s filterless CLASS D Amplifiers with active emissions limiting technology provide CLASS AB performance with CLASS D efficiency.
The CLASS D Power Amplifier delivers up to 715mW from a 3.7V supply into an 8Ω load with 88% efficiency to extend battery life. The filterless modulation scheme combined with active emission limiting circuitry and spread-spectrum modulation greatly reduces EMI while eliminating the need for output filtering used in traditional CLASS D devices.

Features
♦ Better than 9dB Margin Under EN 55022 CLASS B
   Limits with No Filter Components
♦ Low RF Susceptibility Design Rejects TDMA
   Noise from GSM Radios
♦ Input Mixer with User Defined Input Mode
Stereo 715mW Speaker Output (RL = 8Ω,
   VDD = 3.7V)
Stereo 58mW Headphone Output (16Ω,
   VDD = 3.7V)
♦ Low 0.04% THD+N at 1kHz (CLASS D Power
   Amplifier)
♦ Low 0.018% THD+N at 1kHz (Headphone
   Amplifier)
♦ 88% Efficiency (RL = 8Ω, POUT = 750mW)
♦ 1.6Ω Analog Switch for Speaker Amplifier Bypass
♦ High Speaker Amplifier PSRR (72dB at 217Hz)
♦ High Headphone Amplifier PSRR (84dB at 217Hz)
♦ I2C Control
♦ Hardware and Software Shutdown Mode
♦ Ultra-Low Click and Pop
♦ Robust Design with Current and Thermal
   Protection
♦ Available in Space-Saving Package
   5x6 UCSP (2.5mm x 3mm)

Applications
   Cell Phones
   Portable Multimedia Players

Part Name(s) : NS4263
Unspecified
Unspecified
Description : 3W-channel CLASS AB Audio Amplifier + Stereo Headphones

NS4263 is a two-channel CLASS AB Audio Amplifier. In addition, when the Headphone plug into the jack, the Audio Power Amplifier Is it in single-ended mode drive Stereo Headphones. To simplify Audio system design, NS4263 bridge connecting speakers Zoom mode and single-ended Stereo Headphone Amplifier models are implemented on the same chip.

ON-Semiconductor
ON Semiconductor
Description : CLASS-D Audio Power Amplifier with built-in Headphone Amplifier BTL 15W × 2ch

Overview
The LV49157V is a 15W per channel Stereo digital Power Amplifier that takes analog inputs. The LV49157V uses unique Our developed feedback technology to achieve excellent Audio quality despite being a CLASS D Amplifier and can be used to implement high quality flat display panel (FDP) based systems.

Features
• BTL output, CLASS D Amplifier system
• Unique Our developed feedback technology achieves superb Audio quality
• High-efficiency CLASS D Amplifier
• Soft muting function reduces impulse noise at Power on/off
• Full complement of built-in protection circuits : over current protection, thermal protection, and low Power supply voltage protection circuits
• Built in Power limiter
• Built in Headphone Amplifier

MaximIC
Maxim Integrated
Description : 2.6W Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier

General Description
The MAX9779 combines a Stereo, 2.6W Audio Power Amplifier and Stereo DirectDrive™ 110mW Headphone Amplifier in a single device. The Headphone Amplifier uses Maxim’s patented DirectDrive architecture that produces a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost, space, and component height. A high 90dB PSRR and low 0.01% THD+N ensures clean, low-distortion amplification of the Audio signal through the CLASS AB speaker Amplifiers.

Features
♦ No DC-Blocking Capacitors Required—Provides Industry’s Most Compact Notebook Audio Solution
♦ PC2001 Compliant
♦ 5V Single-Supply Operation
CLASS AB 2.6W Stereo BTL Speaker Amplifiers
♦ 110mW DirectDrive Headphone Amplifiers
♦ High 90dB PSRR
♦ Low-Power Shutdown Mode
♦ Industry-Leading Click-and-Pop Suppression
♦ Low 0.01% THD+N at 1kHz
♦ Short-Circuit and Thermal-Overload Protection
♦ Selectable Gain Settings (15dB, 16.5dB, 18dB, and 19.5dB)
♦ ±8kV ESD-Protected Headphone Driver Outputs
♦ Available in Space-Saving, Thermally Efficient Package
    28-Pin Thin QFN (5mm x 5mm x 0.8mm)

Applications
    Notebook PCs
    Flat-Panel TVs
    Tablet PCs
    Multimedia Monitors
    Portable DVD Players
    LCD Projectors

Part Name(s) : LV49157V
SANYO
SANYO -> Panasonic
Description : CLASS-D Audio Power Amplifier with built-in Headphone Ampifier BTL 15W × 2ch

Overview
The LV49157V is a 15W per channel Stereo digital Power Amplifier that takes analog inputs. The LV49157V uses unique SANYO-developed feedback technology to achieve excellent Audio quality despite being a CLASS D Amplifier and can be used to implement high quality flat display panel (FDP) based systems.

Features
• BTL output, CLASS D Amplifier system
• Unique SANYO-developed feedback technology achieves superb Audio quality
• High-efficiency CLASS D Amplifier
• Soft muting function reduces impulse noise at Power on/off
• Full complement of built-in protection circuits : over current protection, thermal protection, and low Power supply voltage protection circuits
• Built in Power limiter
• Built in Headphone Amplifier

Anpec
Anpec Electronics
Description : 20W Stereo Digital CLASS-D Audio Power Amplifier

General Description
The APA3160A is a digital input, Stereo, high efficiency, CLASS-D Audio Amplifier available in a TQFP7x7-48P package.
The APA3160A accepts the digital serial Audio data and using the digital Audio processor to convert the Audio data becomes the Stereo CLASS-D output speaker Amplifier. This provides the seamless integration between the codec and the speaker Amplifier.

Features
• Operating Voltage: 8.0V~24V for PVDD
    – 3.0V~3.6V for DVDD and AVDD
• High Efficiency CLASS-D Operation Eliminate the Need of Heatsinks
• Digital Serial Audio Input (Stereo Output)
• I2C Control Interface
• Sampling Rate can Support from 32kHz to 192kHz
• Separated Volume Control from 24dB to Mute
• Soft Mute (50% Duty Cycle)
• Shutdown and Mute Function
• Thermal and Over-Current Protections with Auto-Recovery
• Space Saving Package TQFP7x7-48P
• Lead Free and Green Devices Available (RoHS Compliant)

Applications
• LCD TV

Part Name(s) : PA5750
Protek-Devices
ProTek Devices.
Description : Low Power Stereo Audio CODEC with Speaker and Headphone Amplifier.

DESCRIPTION
The PA5750 is a high performance, low Power and low cost Audio CODEC.
It consists of 2-channel ADC, 2-channel DAC, microphone Amplifier, Speaker Amplifier, headset Amplifier, digital enhancements and analog mixing and amplification functions.

FEATURES
ADC
• 24-bit, 8 – 96 kHz sampling frequency
• 92dB dynamic range, 92dB signal to noise ratio, -85dB THD+N
Stereo or Mono microphone interface with microphone Amplifier
• Auto level control and noise gate
• 3 to1 analog input selection
• Analog input mixers and Amplifiers

DAC
• 24-bit, 8 – 96 kHz sampling frequency
• 93dB dynamic range, 93dB signal to noise ratio, -81dB THD+N
• 500mWatt speaker Amplifier
• 40mWatt Headphone option, pop free, capless opt.
Stereo enhancement
• Bass and Treble
• Analog output mixers and Amplifiers

Low Power
• 1.8 to 3.3Volt operation
• 7mWatt playback, 16mWatt playback and record.

System
• I2C or SPI µC interface
Headphone Detector
• 256Fs, 384Fs, USB 12MHz or 24MHz
• Master or Slave serial port
• I2S, Left Justified, DSP/PCM Mode

APPLICATIONS
• MP3 Players / Recorders
• AAC/WMA/Multi Format Players
• Portable Digital Music Systems
• GPS
• Bluetooth

Description : 2 x 1.5W, Stereo CLASS D Audio Subsystem with DirectDrive Headphone Amplifier

General Description
The MAX9775/MAX9776 combine a high-efficiency CLASS D, Stereo/mono Audio Power Amplifier with a mono DirectDrive® receiver Amplifier and a Stereo DirectDrive Headphone Amplifier.

Features
♦ Unique Spread-Spectrum Modulation and Active Emissions Limiting Significantly Reduces EMI
♦ 3D Stereo Enhancement (MAX9775 Only)
♦ Up to 3 Stereo Inputs
♦ 1.5W Stereo Speaker Output (4Ω, VDD = 5V)
♦ 50mW Mono Receiver/Stereo Headphone Outputs (32Ω, VDD = 3.3V)
♦ High PSRR (68dB at 217Hz)
♦ 79% Efficiency (VDD = 3.3V, RL = 8Ω, POUT = 470mW)
♦ I2C Control—Input Configuration, Volume Control, Output Mode
♦ Click-and-Pop Suppression
♦ Low Total Harmonic Distortion (0.03% at 1kHz)
♦ Current-Limit and Thermal Protection
♦ Available in Space-Saving, 36-Bump WLP (3mm x 3mm) and 32-Pin TQFN (5mm x 5mm) Packages

Applications
    Cell Phones
    Portable Multimedia Players
    Handheld Gaming Consoles

Anpec
Anpec Electronics
Description : 20W Stereo Digital CLASS-D Audio Power Amplifier with EQ and DRC

General Description
The APA3160 is a digital input, Stereo, high efficiency, CLASS-D Audio Amplifier available in a TQFP7x7-48P package.
The APA3160 accepts the digital serial Audio data and using the digital Audio processor to convert the Audio data becomes the Stereo CLASS-D output speaker Amplifier. This provides the seamless integration between the codec and the speaker Amplifier.

Features
• Operating Voltage: 8.0V~24V for PVDD
    – 3.0V~3.6V for DVDD and AVDD
• High Efficiency CLASS-D Operation Eliminate the Need of Heatsinks
• Digital Serial Audio Input (Stereo Output)
• I2C Control Interface
• Sampling Rate can Support from 32kHz to 192kHz
• Separated Volume Control from 24dB to Mute
• Soft Mute (50% Duty Cycle)
• Programmable Dynamic Range Compression
    – Power Limiter
    – Speaker Protection
    – Night-Mode Listening
• Programmable Biquads for Speaker EQ
• Shutdown and Mute Function
• Thermal and Over-Current Protections with Auto-Recovery
• Space Saving Package TQFP7x7-48P
• Lead Free and Green Devices Available (RoHS Compliant)

Applications
• LCD TV

Part Name(s) : LV4901H
SANYO
SANYO -> Panasonic
Description : Buit-in 80mW Headphone Amplifier BTL 10W×2ch Crass-D Audio Power Amplifier

Overview
The LV4901H is a 10W per channel Stereo digital Power Amplifier that takes analog inputs. The LV4901H uses unique SANYO-developed feedback technology to achieve excellent Audio quality despite being a CLASS D Amplifier and can be used to implement high quality flat display panel (FDP) based systems.

Features
• Supports circuit designs that do not require output LC filters
• BTL output, CLASS D Amplifier system
• Unique SANYO-developed feedback technology achieves superb Audio quality
• High-efficiency CLASS D Amplifier, Low EMI
• Soft muting function reduces impulse noise at Power on/off
• Full complement of built-in protection circuits : overcurrent protection, thermal protection, and low Power supply voltage protection circuits
• Built in boot strap diode
• Built in Headphone Amplifier

Functions
• 10W output (VD = 12V, RL = 8Ω, THD + N = 10%)
• Efficiency : η > 85% (VD = 12V, RL = 8Ω, fin = 1kHz, PO = 10W)
• 80mW Stereo Headphone Amplifier (VD = 12V, RL = 16Ω, THD + N = 10%)
• Package HSOP-36

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