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Part Name(s) : SVI3205 SVI3205B
SANYO
SANYO -> Panasonic
Description : SVI3205B / Stereo Power Amplifier

SVI3205 datasheet pdf : SVI3205B / Stereo Power Amplifier

Description : Low-Power, Stereo CODEC w/ Headphone & Speaker Amps

General Description
The CS42L52 is a highly integrated, low Power Stereo CODEC with headphone and Class D speaker Amplifiers. The CS42L52 offers many features suitable for low Power, portable system applications.

Stereo CODEC
♦ High Performance Stereo ADC & DAC
    – 98 dB Dynamic Range (A-wtd)
    – -88 dB THD+N
♦ Flexible Stereo Analog Input Architecture
    – 4:1 Analog Input MUX
    – Analog Input Mixing
    – Analog Passthru with Volume Control
    – Analog Programmable Gain Amplifier (PGA)
♦ Programmable Automatic Level Control (ALC)
    – Noise Gate for Noise Suppression
    – Programmable Threshold & Attack/Release Rates
♦ Dual MIC Inputs
    – Differential or Single-Ended
    – +16 dB to +32 dB w/1dB step MIC PreAmplifiers
    – Programmable, Low Noise MIC Bias Levels
♦ Digital Signal Processing Engine
    – Bass & Treble Tone Control, De-Emphasis
    – Master Vol. and Independent PCM SDIN + ADC SDOUT Mix Volume Control
    – Soft-Ramp & Zero-Cross Transitions
    – Programmable Peak-Detect and Limiter
    – Beep Generator w/Full Tone Control

Class D Stereo/Mono Speaker Amplifier
♦ No External Filter Required
♦ High Stereo Output Power at 10% THD+N
    – 2 x 1.00 W into 8 Ω @ 5.0 V
    – 2 x 550 mW into 8 Ω @ 3.7 V
    – 2 x 230 mW into 8 Ω @ 2.5 V
♦ High Mono Output Power at 10% THD+N
    – 1 x 1.90 W into 4 Ω @ 5.0 V
    – 1 x 1.00 W into 4 Ω @ 3.7 V
    – 1 x 350 mW into 4 Ω @ 2.5 V
♦ Direct Battery Powered Operation
    – Battery Level Monitoring & Compensation
♦ 82% Efficiency at 800 mW
♦ Phase-Aligned PWM Output Reduces Idle Channel Current
♦ Spread Spectrum Modulation
♦ Low Quiescent Current

Stereo Headphone Amplifier
♦ Ground Centered Outputs
    – No DC-Blocking Capacitors Required
    – Integrated Negative Voltage Regulator
♦ High Power Output at -75 dB THD+N
    – 2 x 23 mW Into 16 Ω @ 1.8 V
    – 2 x 44 mW Into 16 Ω @ 2.5 V

System Features
♦ 12, 24, and 27 MHz Master Clock Support in Addition to Typical Audio Clock Rates
♦ High Performance 24-bit Converters
    – Multi-bit Delta Sigma Architecture
    – Very Low 64Fs Oversampling Clock Reduces Power Consumption
♦ Low Power Operation
    – Stereo Analog Passthru: 10 mW @ 1.8 V
    – Stereo Playback: 14 mW @ 1.8 V
    – Stereo Rec. and Playback: 23 mW @ 1.8 V
♦ Variable Power Supplies
    – 1.8 V to 2.5 V Digital & Analog
    – 1.6 V to 5 V Class D Amplifier
    – 1.8 V to 2.5 V Headphone Amplifier
    – 1.8 V to 3.3 V Interface Logic
Power Down Management
    – ADC, DAC, CODEC, MIC Pre-Amplifier, PGA, Headphone Amplifier, Speaker Amplifier
♦ Analog & Digital Routing/Mixes:
    – Line/Headphone Out = Analog In (ADC Bypassed)
    – Line/Headphone/Speaker Out = ADC + Digital In
    – Digital Out = ADC + Digital In
    – Internal Digital Loopback
    – Mono Mixes
♦ Flexible Clocking Options
    – Master or Slave Operation
    – High Impedance Digital Output Option (for easy MUXing between CODEC & other data sources)
    – Quarter-Speed Mode - (i.e. allows 8 kHz Fs while maintaining a flat noise floor up to 16 kHz)
    – 4 kHz to 96 kHz Sample Rates
♦ I²C® Control Port Operation
♦ Temp. Monitor w/Thermal Foldback & Shutdown
♦ Headphone/Speaker Detection Input
♦ Pop and Click Suppression

Applications
♦ Digital Voice Recorders, Digital Cameras & Camcorders
♦ PDA’s
♦ Personal Media Players
♦ Portable Game Consoles

Description : Stereo Audio CODECs with Microphone, DirectDrive Headphones, Speaker Amplifiers, or Line Outputs

General Description
The MAX9851/MAX9853 are single-chip, Stereo audio CODECs designed to provide a complete audio solution for a GSM/GPRS/EDGE cell phone. The MAX9851/MAX9853 provide Stereo DirectDriveTM headphone Amplifiers, a mono receiver speaker Amplifier, Stereo Class D speaker Amplifiers (MAX9851 only), Stereo differential line outputs (MAX9853 only), microphone input Amplifiers, plus flexible input selection and gain control. Two serial digital audio interfaces are included, one intended to accept voiceband data and the other accepting I2S data. The voiceband interface can be reconfigured as needed to act as a secondary I2S feed input—allowing multiple audio source mixing of ringer tones or other audio at different sample rates. A transducer/vibrator signal can be derived from digital audio.

Features
♦ +1.7V to +3.3V (Digital) and +2.6V to +3.3V (Analog) Operation
♦ +2.6V to +5.5V Class D Speaker Amplifier Operation (Direct from Battery)
♦ Low 26mW Quiescent Power Consumption (Playback)
♦ High 98dB Power-Supply Rejection Ratio
♦ 8kHz to 48kHz Sample Rate (Replay and Record)
Stereo 18-Bit ADC and DAC
♦ Low-Noise Stereo Microphone Inputs and Stereo Line Inputs
♦ Dual Source Digital Mixing (DAC)
♦ Selectable Voiceband Filter for Recording/Playback Modes
♦ Digital Filtering, Soft Mute, and Volume Control
♦ Low-Noise, High-PSRR Microphone Bias Generator
Stereo DirectDrive Headphone Amplifier (2 x 50mW)
♦ Mono DirectDrive Handset Receiver Amplifier (1 x 105mW)
Stereo Class D, Ultra-Low-EMI, Filterless Speaker Amplifier with Active Emissions Limiting (2 x 1.25W, 8Ω) (MAX9851)
Stereo Differential Line Output Amplifiers (MAX9853)
♦ Clickless/Popless Operation
♦ Flexible Shutdown Modes for Power Saving
♦ Comprehensive Headset Detection
♦ Ultra-Low Power Wake-Up on Headset Detection

Applications
   GSM/GPRS/EDGE Cell Phones
   PDAs/SmartPhones

Description : 18-bit Low Power Asynchronous Stereo Audio DAC with Integrated Power Amplifiers and Voice Codec

GENERAL DESCRIPTION
STw5094A is a low Power asynchronous Stereo audio DAC device with headphones Amplifiers for high quality MP3 and FM radio listening. The STw5094A includes also an high performance low Power combined PCM Codec⁄ filter tailored to implement the audio front-end functions required by low voltage low Power consumption digital cellular terminals with added MP3 and FM radio listening.

FEATURES
■ Complete Stereo audio digital to analog
   converters and filters
   – 18-bit, 8 kHz to 48 kHz DAC with sample-rate
      conversion
   – Linear phase analog&digital filters
   – 16 Ω load Stereo headphones drivers, 8 Ω
      load mono loudspeaker driver for group
      listening
Stereo audio DAC features
   – Asynchronous sampling DAC: does not
      require oversampled clock and information
      on the audio data sampling frequency.
      Jitter tolerant
   – Multibit Σ∆ modulator with data weighted
      averaging DAC
   – 92 dB dynamic range, 0.01% THD over 16 Ω
      load performance
   – Support any sampling frequency in the range
      8 kHz to 48 kHz
   – DSP functions for bass-treble-volume
      controls, deemphasis filter and dynamic
      compression
   – Tones from tone generator can be injected in
      the audio paths
Stereo headphones and loudspeaker/earpiece
   Power Amplifiers features and Stereo input for
   FM radio features:
   – 20 kHz bandwidth Stereo headphones
      outputs. Driving capability: 40 mW
      (typ. 0.1% T.H.D) over 16 Ωwith 40 dB range
      programmable gain
   – Balanced earpiece⁄ loudspeaker output.
      Driving capability: 300 mW (typ. 0.1% T.H.D)
      over 8 Ωwith 30dB range programmable gain
   – Analog Stereo input for FM radio with 38 dB
      range programmable gain
■ Complete CODEC and filter system
   – 14-bit linear or 8-bit companded ADC and
      DAC
   – Transmit and receive digital band-pass filters
   – Active antialias and smoothing filters
   – 8 Ω load earpiece/loudspeaker driver,
      16 Ω load auxiliary driver
■ Voice CODEC features
   – Support 8 kHz or 16 kHz sampling rate
   – One microphone biasing output
   – Remote control function
   – Three switchable microphone Amplifier
      inputs. 42.5 dB range programmable gain
   – Transient supression during Power up and
      Power down
   – Internal programmable sidetone
   – Internal ring, tone and dtmf generator
   – Programmable PWM buzzer driver (Continue ...)
  
APPLICATIONS
■ CDMA,GSM,DCS1800,PCS1900,JDC digital
   cellular telephones with MP3 and FM radio
   Stereo listening functions
■ Portable devices with a Stereo digital audio
   source and FM radio listening function

Part Name(s) : NTE789
NTE-Electronic
NTE Electronics
Description : Integrated Circuit Stereo Multiplex Decoder

Description:
The NTE789, a monolithic silicon integrated circuit, is a Stereo multiplex decoder intended for FM multiplex systems.
This Stereo multiplex decoder requires only one low–inductance tuning coil (requires only one adjustment for complete alignment), provides automatic Stereo switching, energizes a Stereo indicator lamp, and operates from a wide range of voltage supplies.
Figure 1 shows the block diagram for the NTE789. The input signal form the detector is amplified by a low–distortion preAmplifier and simultaneously applied to both signal, generated by a local voltage–controlled oscillator (VCO), is counted down by two frequency dividers to a 38kHz signal and to two 19–kHz pilot–tone supplied by the FM detector is compared to the locally generated 19–kHz signal in a synchronous detector.

Features:
• Requires the use of only one low–inductance tuning coil
• Automatic Stereo switching
• Directly drives a Stereo indicator lamp up to 100mA
• Includes driver for Stereo–lamp indicator
• Operates from a wide range of Power supplies: 10 to 16 volts
• Requires only one adjustment for alignment
• Switching from monaural to Stereo and Stereo to monaural produces no audible thumps
• Low distortion: under 0.5%
• Separate dc input permits Stereo defeat or enable
• High signal output: directly drives audio Amplifiers
• Excellent SCA (storecast) rejection: 55dB typ.
• High audio channel separation: 40dB typ.

 

Realtek
Realtek Semiconductor
Description : I2C + I2S Stereo Audio Codec Mono Class-AB/D Amp

General Description
The ALC5633Q is a high performance I2S/PCM interface audio codec. The main functions have Stereo Codec, Stereo Headphone Output, Stereo Differential Input, Stereo Line Input and Mono Class-AB/D Speaker Amplifier.

Features
■ Digital-to-Analog Converter with 98dBA SNR and –90dB THD+N
■ Analog-to-Digital Converter with 93dBA SNR and –90dB THD+N
■ Mono BTL (Bridge-Tied Load) / Stereo SE (Single-Ended) Class-AB/D Amplifier and with
   650mW/Ch output Power (SPKVDD=3.6V, THD = 1%, 8W load, Class-D Mode)
   2W/Ch output Power (SPKVDD=5.0V, THD = 1%, 4W load, Class-D Mode)
Stereo differential analog microphone inputs with multi-step boost
   pre-Amplifiers and low noise microphone bias
■ Audio jack insert detection and microphone switch detection
Power management and enhanced Power saving
■ Support flexible digital 7 bands equalizer (EQ) and wind filter
■ Support analog to analog path with EQ function
■ Support digital spatial sound and pseudo Stereo effect
■ Zero detection and soft volume for pop noise suppression
■ Inside PLL can receive wide range clock input
■ Digital beep generator
■ Support I2C control interface
■ 24bit/8kHz ~ 192kHz I2S/PCM interface for Stereo DAC
■ 24bit/8kHz ~ 96kHz I2S/PCM interface for Stereo ADC
■ Support enhanced Auto Level Control (ALC) function for playback and record
■ QFN-32 (5mm x 5mm) package

System Application
■ Tablet PC system/Ultra-Mobile PC (UMPC)
■ Portable Navigation Device

Wolfson
Wolfson Microelectronics plc
Description : Stereo CODEC With Speaker Driver

DESCRIPTION
The WM8978 is a low Power, high quality Stereo codec designed for portable applications such as Digital still camera or Digital Camcorder.
The device integrates preamps for Stereo differential mics, and includes drivers for speakers, headphone and differential or Stereo line output. External component requirements are reduced as no separate microphone or headphone Amplifiers are required.
Advanced on-chip digital signal processing includes a 5-band equaliser, a mixed signal Automatic Level Control for the microphone or line input through the ADC as well as a purely digital limiter function for record or playback. Additional digital filtering options are available in the ADC path, to cater for application filtering such as ‘wind noise reduction’.
The WM8978 CODEC can operate as a master or a slave. An internal PLL can generate all required audio clocks for the Codec from common reference clock frequencies, such as 12MHz and 13MHz.

FEATURES
Stereo Codec:
• DAC SNR 98dB, THD -84dB (‘A’ weighted @ 48kHz)
• ADC SNR 90dB, THD -80dB (‘A’ weighted @ 48kHz)
• On-chip Headphone Driver with ‘capless’ option
   - 40mW output Power into 16Ω / 3.3V SPKVDD
• 0.9W output Power into 8Ω BTL speaker / 5V SPKVDD
   - Capable of driving piezo speakers
   - Stereo speaker drive configuration
• Mic Preamps:
Stereo Differential or mono microphone Interfaces
   - Programmable preamp gain
   - Psuedo differential inputs with common mode rejection
   - Programmable ALC / Noise Gate in ADC path
• Low-noise bias supplied for electret microphones
• Other features:
• Enhanced 3-D function for improved Stereo separation
• Digital playback limiter
• 5-band Equaliser (record or playback)
• Programmable ADC High Pass Filter (wind noise reduction)
• Programmable ADC Notch Filter
• Aux inputs for Stereo analog input signals or ‘beep’
• On-chip PLL supporting 12, 13, 19.2MHz and other clocks
• Low Power, low voltage
   - 2.5V to 3.6V (digital core: 1.62V to 3.6V)
   - Power consumption <30mW all-on with 2.5V supplies
• 5x5mm 32-pin QFN package

APPLICATIONS
Stereo Camcorder or DSC

 

Part Name(s) : NTE1461
NTE-Electronic
NTE Electronics
Description : Integrated Circuit Phase Lock Loop (PLL) FM Stereo Demod

Description:
The NTE1461 is a multiplex integrated circuit in a 16−Lead SIP type package designed for use in FM car Stereo applications. Due to its low distortion factor, this device can be used as a multiplex Stereo demodulator appropriate for car component Stereo units.

Features:
• Low Distortion Factor: 0.05% Typ, 300mV Input Mono
• The Ripple of Power Source can Effectively be Rejected
• Wide Supply Voltage Range: VCC = 6.5V to 14V

Functions:
Stereo Noise Control (SNC Pin):
   Through controlling the quality of sound from Stereo mode to monaural mode with the voltage applied to the control pin, the FM Stereo noise in the weak electic field is reduced by this function.
• High−Cut Control Function (HCC Pin):
   The FM noise in weak electric field is reduced through the attenuation of high frequency thereof.
   Such attenuation can be changed smoothly from “Normal” to “High−Cut” by controlling the voltage applied to the control pin. The volume of “High−Cut” can be selected by using a capacitor installed at the outside of he unit.
Stereo/Monaural Automatic Conversion:
   This conversion operates in priority to the Stereo noise control. Preference on the pilot input.
• Stoppage of VCO Oscillation:
   When a voltage higher than 6V is applied on the HCC pin, the oscillation of VCO can be discontinued. An erroneous operation of Stereo lamp does not happen even at this stage.
• With spearation control terminal

 

Part Name(s) : STW5094
ST-Microelectronics
STMicroelectronics
Description : 18 BIT 8kHz TO 48kHz LOW Power Stereo AUDIO DAC WITH INTEGRATED Power AmplifierS AND VOICE CODEC

GENERAL DESCRIPTION
STw5094 is a low Power Stereo Audio DAC device with Headphones Amplifiers for high quality MP3 and FM radio listening. The STw5094 includes also an high performance low Power combined PCM CODEC ⁄ FILTER tailored to implement the audio front-end functions required by low voltage low Power consumption digital cellular terminals with added MP3 and FM radio listening.

FEATURES:
Complete Stereo AUDIO DAC and FILTERS including:
■ 18 BIT DIGITAL TO ANALOG CONVERTERS.
■ LINEAR PHASE DIGITAL FILTERS.
■ ACTIVE LINEAR PHASE SMOOTHING FILTER.
■ 30Ω LOAD Stereo HEADPHONES DRIVERS, 8Ω LOAD MONO LOUDSPEAKER DRIVER FOR GROUP LISTENING.

Stereo Audio DAC Features:
■ MULTIBIT Σ∆ MODULATOR WITH DATA WEIGHTED AVERAGING DAC.
■ 92 dB DYNAMIC RANGE, 0.01% THD OVER 30Ω LOAD PERFORMANCE.
■ SUPPORTS ALL THE MPEG 1 & 2 SAMPLING FREQUENCIES AND THE EXTENSION TO MPEG 2.5: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz.
■ TONES FROM TONE GENERATOR CAN BE INJECTED IN THE AUDIO PATHS.

Stereo Headphones and Loudspeaker/Earpiece Power Amplifiers features and Stereo Input for FM Radio Features:
■ 20kHz BANDWIDTH Stereo HEADPHONES OUTPUTS. DRIVING CAPABILITY: 20mW (TYP. 0.1% T.H.D) OVER 30Ω WITH 40 dB RANGE PROGRAMMABLE GAIN.
■ BALANCED EARPIECE ⁄ LOUDSPEAKER OUTPUT. DRIVING CAPABILITY: 190mW (TYP. 0.1% T.H.D) OVER 8Ω WITH 30dB RANGE PROGRAMMABLE GAIN.
■ ANALOG Stereo INPUT FOR FM RADIO WITH 38 dB RANGE PROGRAMMABLE GAIN.

Complete CODEC and FILTER system including:
■ 14 BIT LINEAR ADC AND DAC.
■ 8 BIT COMPANDED ADC AND DAC A-LAW OR µ-LAW.
■ TRANSMIT AND RECEIVE DIGITAL BAND-PASS FILTERS.
■ ACTIVE ANTIALIAS AND SMOOTHING FILTERS.
■ 8Ω LOAD EARPIECE/LOUDSPEAKER DRIVER, 30Ω LOAD AUXILIARY DRIVER.

Voice CODEC Features:
■ SUPPORT BOTH 8kHz AND 16kHz SAMPLING RATE.
■ ONE MICROPHONE BIASING OUTPUT.
■ REMOTE CONTROL FUNCTION.
■ ONE LINE INPUT AND TWO SWITCHABLE MICROPHONE Amplifier INPUTS. 42.5dB RANGE PROGRAMMABLE GAIN.
■ TRANSIENT SUPRESSION DURING Power UP AND Power DOWN.
■ INTERNAL PROGRAMMABLE SIDETONE CIRCUIT.
■ INTERNAL RING, TONE AND DTMF GENERATOR.
■ PROGRAMMABLE PWM BUZZER DRIVER.

General Features:
■ SINGLE 2.7V to 3.3V SUPPLY.
■ EXTENDED TEMPERATURE RANGE OPERATION (*) -40°C to 85°C.
■ 1 µW STANDBY Power (TYP. AT 2.7V).
■ 13 mW OPERATING Power IN AUDIO LISTENING MODE (TYP. AT 2.7V).
■ 11 mW OPERATING Power IN VOICE CODEC MODE (TYP. AT 2.7V).
■ 1.8V TO 3.3V CMOS COMPATIBLE DIGITAL INTERFACES.
■ PROGRAMMABLE PCM INTERFACE.
■ I2C COMPATIBLE CONTROL INTERFACE.
■ PROGRAMMABLE SERIAL AUDIO DATA INPUT INTERFACE (I2S AND OTHER FORMATS).

Description : SigmaDSP Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL

GENERAL DESCRIPTION
The ADAU1761 is a low Power, Stereo audio codec with integrated digital audio processing that supports Stereo 48 kHz record and playback at 14 mW from a 1.8 V analog supply. The Stereo audio ADCs and DACs support sample rates from 8 kHz to 96 kHz as well as a digital volume control.
The SigmaDSP® core features 28-bit processing (56-bit double precision). The processor allows system designers to compensate for the real-world limitations of microphones, speakers, Amplifiers, and listening environments, resulting in a dramatic improvement in the perceived audio quality through equalization, multiband compression, limiting, and third-party branded algorithms.

FEATURES
  SigmaDSP 28-/56-bit, 50 MIPS digital audio processor
  Fully programmable with SigmaStudio graphical tool
  24-bit Stereo audio ADC and DAC: >98 dB SNR
  Sampling rates from 8 kHz to 96 kHz
  Low Power: 7 mW record, 7 mW playback, 48 kHz at 1.8 V
  6 analog input pins, configurable for single-ended or differential inputs
  Flexible analog input/output mixers
  Stereo digital microphone input
  Analog outputs: 2 differential Stereo, 2 single-ended Stereo, 1 mono headphone output driver
  PLL supporting input clocks from 8 MHz to 27 MHz
  Analog automatic level control (ALC)
  Microphone bias reference voltage
  Analog and digital I/O: 1.8 V to 3.65 V
  I2C and SPI control interfaces
  Digital audio serial data I/O: Stereo and time-division multiplexing (TDM) modes
  Software-controllable clickless mute
  Software Power-down
  GPIO pins for digital controls and outputs
  32-lead, 5 mm × 5 mm LFCSP
  −40°C to +85°C operating temperature range

APPLICATIONS
  Smartphones/multimedia phones
  Digital still cameras/digital video cameras
  Portable media players/portable audio players
  Phone accessories products

 

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