Catalog
8 Channel Digital Audio PWM Processor
Key Features
• General FeaturesAutomated Operation With an Easy-to-Use Control InterfaceI2C Serial-Control Slave InterfaceIntegrated AM Interference-Avoidance CircuitrySingle, 3.3-V Power Supply64-Pin TQFP Package5-V Tolerant InputsAudio Input/OutputAutomatic Master Clock Rate and Data Sample Rate DetectionEight Serial Audio Input ChannelsEight PWM Audio Output Channels Configurable as Six ChannelsWith Stereo Lineout or Eight ChannelsLine Output Is a PWM Output to Drive an ExternalDifferential-Input Operational AmplifierHeadphone PWM Output to Drive an External Differential AmplifierLike the TPA112PWM Outputs Support Single-Ended and Bridge-Tied Loads32-, 38-, 44.1-, 48-, 88.2-, 96-, 176.4-, and 192-kHz Sampling RatesData Formats: 16-, 20-, or 24-Bit Left-Justified, I2S,or Right-Justified Input Data64-Fs Bit-Clock Rate128-, 192-, 256-, 384-, 512-, and 768-Fs Master Clock Rates(Up to a Maximum of50 MHz)Audio Processing48-Bit Processing Architecture With 76 Bits of Precisionfor Most Audio Processing FeaturesVolume Control Range 36 dB to –127 dBMaster Volume Control Range of 18 dB to –100 dBEight Individual Channel Volume Control Ranges of 18 dB to –127 dBProgrammable Soft Volume and MuteUpdate RatesFour Bass and Treble Tone Controls with ±18-dB Range,Selectable Corner Frequencies, and Second-Order SlopesL, R, and CLS, RSLR, RRSubConfigurable Loudness CompensationTwo Dynamic Range Compressors With Two Thresholds, Two Offsets,and Three SlopesSeven Biquads Per ChannelFull 8×8 Input Crossbar Mixer. Each Signal-ProcessingChannel Input Can Be Any Ratio of the Eight Input Channels.8×2 Output Mixer – Channels 1–6. Each OutputCan Be Any Ratio of Any Two Signal-Processed Channels.8×3 Output Mixer – Channels 7 and 8. Each OutputCan Be Any Ratio of Any Three Signal-Processed Channels.Three Coefficient Sets Stored on the Device Can Be SelectedManually or Automatically (Based on Specific Data Rates).DC Blocking FiltersAble to Support a Variety of Bass Management AlgorithmsPWM Processing32-Bit Processing PWM Architecture With 40 Bits of Precision8× Oversampling With Fifth-Order Noise Shaping at32 kHz–48 kHz, 4× Oversampling at 88.2 kHz and96 kHz, and 2× Oversampling at 176.4 kHz and 192 kHz>102-dB Dynamic RangeTHD+N < 0.1%20-Hz–20-kHz, Flat Noise Floor for 44.1-, 48-, 88.2-, 96-,176.4-, and 192-kHz Data RatesDigital De-Emphasis for 32-, 44.1-, and 48-kHz Data RatesFlexible Automute Logic With Programmable Threshold and Durationfor Noise-Free OperationIntelligent AM Interference-Avoidance System Provides Clear AM ReceptionPower-Supply Volume Control (PSVC) Support for Enhanced Dynamic Range inHigh-Performance ApplicationsAdjustable Modulation LimitPurePath Digital is a trademark of Texas Instruments.Matlab is a trademark of Math Works, Inc.All other trademarks are the property of their respective owners.General FeaturesAutomated Operation With an Easy-to-Use Control InterfaceI2C Serial-Control Slave InterfaceIntegrated AM Interference-Avoidance CircuitrySingle, 3.3-V Power Supply64-Pin TQFP Package5-V Tolerant InputsAudio Input/OutputAutomatic Master Clock Rate and Data Sample Rate DetectionEight Serial Audio Input ChannelsEight PWM Audio Output Channels Configurable as Six ChannelsWith Stereo Lineout or Eight ChannelsLine Output Is a PWM Output to Drive an ExternalDifferential-Input Operational AmplifierHeadphone PWM Output to Drive an External Differential AmplifierLike the TPA112PWM Outputs Support Single-Ended and Bridge-Tied Loads32-, 38-, 44.1-, 48-, 88.2-, 96-, 176.4-, and 192-kHz Sampling RatesData Formats: 16-, 20-, or 24-Bit Left-Justified, I2S,or Right-Justified Input Data64-Fs Bit-Clock Rate128-, 192-, 256-, 384-, 512-, and 768-Fs Master Clock Rates(Up to a Maximum of50 MHz)Audio Processing48-Bit Processing Architecture With 76 Bits of Precisionfor Most Audio Processing FeaturesVolume Control Range 36 dB to –127 dBMaster Volume Control Range of 18 dB to –100 dBEight Individual Channel Volume Control Ranges of 18 dB to –127 dBProgrammable Soft Volume and MuteUpdate RatesFour Bass and Treble Tone Controls with ±18-dB Range,Selectable Corner Frequencies, and Second-Order SlopesL, R, and CLS, RSLR, RRSubConfigurable Loudness CompensationTwo Dynamic Range Compressors With Two Thresholds, Two Offsets,and Three SlopesSeven Biquads Per ChannelFull 8×8 Input Crossbar Mixer. Each Signal-ProcessingChannel Input Can Be Any Ratio of the Eight Input Channels.8×2 Output Mixer – Channels 1–6. Each OutputCan Be Any Ratio of Any Two Signal-Processed Channels.8×3 Output Mixer – Channels 7 and 8. Each OutputCan Be Any Ratio of Any Three Signal-Processed Channels.Three Coefficient Sets Stored on the Device Can Be SelectedManually or Automatically (Based on Specific Data Rates).DC Blocking FiltersAble to Support a Variety of Bass Management AlgorithmsPWM Processing32-Bit Processing PWM Architecture With 40 Bits of Precision8× Oversampling With Fifth-Order Noise Shaping at32 kHz–48 kHz, 4× Oversampling at 88.2 kHz and96 kHz, and 2× Oversampling at 176.4 kHz and 192 kHz>102-dB Dynamic RangeTHD+N < 0.1%20-Hz–20-kHz, Flat Noise Floor for 44.1-, 48-, 88.2-, 96-,176.4-, and 192-kHz Data RatesDigital De-Emphasis for 32-, 44.1-, and 48-kHz Data RatesFlexible Automute Logic With Programmable Threshold and Durationfor Noise-Free OperationIntelligent AM Interference-Avoidance System Provides Clear AM ReceptionPower-Supply Volume Control (PSVC) Support for Enhanced Dynamic Range inHigh-Performance ApplicationsAdjustable Modulation LimitPurePath Digital is a trademark of Texas Instruments.Matlab is a trademark of Math Works, Inc.All other trademarks are the property of their respective owners.
Description
AI
The TAS5508C is an 8-channel digital pulse-width modulator (PWM) that provides both advanced performance and a high level of system integration. The TAS5508C is designed to interface seamlessly with most audio digital signal processors. The TAS5508C automatically adjusts control configurations in response to clock and data rate changes and idle conditions. This enables the TAS5508C to provide an easy-to-use control interface with relaxed timing requirements.
The TAS5508C can drive eight channels of H-bridge power stages. Texas Instruments H-bridge parts TAS5111, TAS5112, or TAS5182 with FETs are designed to work seamlessly with the TAS5508C. The TAS5508C supports both single-ended or bridge-tied load configurations. The TAS5508C also provides a high-performance, differential output to drive an external, differential-input, analog headphone amplifier (such as the TPA112).
The TAS5508C uses AD modulation operating at a 384-kHz switching rate for 48-, 96-, and 192-kHz data. The 8× oversampling combined with the fifth-order noise shaper provides a broad, flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.
The TAS5508C is a clocked slave-only device. The TAS5508C receives MCLK, SCLK, and LRCLK from other system components. The TAS5508C accepts master clock rates of 128, 192, 256, 384, 512, and 768 Fs. The TAS5508C accepts a 64-Fs bit clock.
The TAS5508C allows for extending the dynamic range by providing a power-supply volume control (PSVC) output signal.
The TAS5508C is an 8-channel digital pulse-width modulator (PWM) that provides both advanced performance and a high level of system integration. The TAS5508C is designed to interface seamlessly with most audio digital signal processors. The TAS5508C automatically adjusts control configurations in response to clock and data rate changes and idle conditions. This enables the TAS5508C to provide an easy-to-use control interface with relaxed timing requirements.
The TAS5508C can drive eight channels of H-bridge power stages. Texas Instruments H-bridge parts TAS5111, TAS5112, or TAS5182 with FETs are designed to work seamlessly with the TAS5508C. The TAS5508C supports both single-ended or bridge-tied load configurations. The TAS5508C also provides a high-performance, differential output to drive an external, differential-input, analog headphone amplifier (such as the TPA112).
The TAS5508C uses AD modulation operating at a 384-kHz switching rate for 48-, 96-, and 192-kHz data. The 8× oversampling combined with the fifth-order noise shaper provides a broad, flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.
The TAS5508C is a clocked slave-only device. The TAS5508C receives MCLK, SCLK, and LRCLK from other system components. The TAS5508C accepts master clock rates of 128, 192, 256, 384, 512, and 768 Fs. The TAS5508C accepts a 64-Fs bit clock.
The TAS5508C allows for extending the dynamic range by providing a power-supply volume control (PSVC) output signal.
