TAS5508
- General Features
- Automated Operation With an Easy-to-Use Control Interface
- I2C Serial-Control Slave Interface
- Integrated AM Interference-Avoidance Circuitry
- Single, 3.3-V Power Supply
- 64-Pin TQFP Package
- 5-V Tolerant Inputs
- Audio Input/Output
- Automatic Master Clock Rate and Data Sample Rate Detection
- Eight Serial Audio Input Channels
- Eight PWM Audio Output Channels Configurable as
Six Channels With Stereo Lineout or Eight channels - Line Output is a PWM Output to Drive an External
Differential-Input Operational Amplifier - Headphone PWM Output to Drive an External
Differential Amplifier Like the TPA112 - PWM Outputs Support Single-Ended and
Bridge-Tied Loads - 32-, 38-, 44.1-, 48-, 88.2-, 96-, 176.4-, and
192-kHz Sampling Rates - Data Formats: 16-, 20-, or 24-Bit Left-Justified,
I2S, or Right-Justified Input Data - 64-Fs Bit-Clock Rate
- 128-, 192-, 256-, 384-, 512-, and 768-Fs Master
Clock Rates (Up to a Maximum of 50 MHz)
- Audio Processing
- 48-Bit Processing Architecture With 76 Bits
of Precision for Most Audio Processing Features - Volume Control Range 36 dB to –127 dB
- Master Volume Control Range of 18 dB
to –100 dB - Eight Individual Channel Volume Control
Ranges of 18 dB to –127 dB
- Master Volume Control Range of 18 dB
- Programmable Soft Volume and Mute Update Rates
- Four Bass and Treble Tone Controls with
=18-dB Range, Selectable Corner Frequencies,
and Second-Order Slopes- L, R, and C
- LS, RS
- LR, RR
- Sub
- Configurable Loudness Compensation
- Two Dynamic Range Compressors With Two Thresholds,
Two Offsets, and Three Slopes - Seven Biquads Per Channel
- Full 8 = 8 Input Crossbar Mixer. Each
Signal-Processing Channel Input Can Be Any
Ratio of the Eight Input Channels. - 8 = 2 Output Mixer – Channels 1–6.
Each Output Can be Any Ratio of Any Two
Signal-Processed Channels. - 8 = 3 Output Mixer – Channels 7 and 8.
Each Output Can Be Any Ratio of Any Three
Signal-Processed Channels. - Three Coefficient Sets Stored on the Device
Can Be Selected Manually or Automatically
(Based on Specific Data Rates). - DC Blocking Filters
- Able to Support a Variety of Bass
Management Algorithms
- 48-Bit Processing Architecture With 76 Bits
- PWM Processing
- 32-Bit Processing PWM Architecture With
40 Bits of Precision - 8= Oversampling With Fifth-Order Noise
Shaping at 32 kHz–48 kHz, 4=
Oversampling at 88.2 kHz and 96 kHz, and 2=
Oversampling at 176.4 kHz and 192 kHz - >102-dB Dynamic Range
- THD+N < 0.1%
- 20-Hz–20-kHz, Flat Noise Floor for 44.1-, 48-,
88.2-, 96-, 176.4-, and 192-kHz Data Rates - Digital De-Emphasis for 32-, 44.1-, and
48-kHz Data Rates - Flexible Automute Logic With Programmable
Threshold and Duration for Noise-Free Operation - Intelligent AM Interference-Avoidance System
Provides Clear AM Reception - Power-Supply Volume Control (PSVC) Support for
Enhanced Dynamic Range in High-Performance Applications - Adjustable Modulation Limit
- 32-Bit Processing PWM Architecture With
PurePath 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.
The TAS5508 is an 8-channel digital pulse-width modulator (PWM) that provides both advanced performance and a high level of system integration. The TAS5508 is designed to interface seamlessly with most audio digital signal processors. The TAS5508 automatically adjusts control configurations in response to clock and data rate changes and idle conditions. This enables the TAS5508 to provide an easy-to-use control interface with relaxed timing requirements.
The TAS5508 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 TAS5508. The TAS5508 supports both single-ended or bridge-tied load configurations. The TAS5508 also provides a high-performance, differential output to drive an external, differential-input, analog headphone amplifier (such as the TPA112).
The TAS5508 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 TAS5508 is a clocked slave-only device. The TAS5508 receives MCLK, SCLK, and LRCLK from other system components. The TAS5508 accepts master clock rates of 128, 192, 256, 384, 512, and 768 Fs. The TAS5508 accepts a 64-Fs bit clock.
The TAS5508 allows for extending the dynamic range by providing a power-supply volume control (PSVC) output signal.
技術資料
| 種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
|---|---|---|---|---|---|---|
| * | データシート | 8 Channel Digital Audio PWM Processor データシート (Rev. D) | 2009年 7月 6日 | |||
| EVM ユーザー ガイド (英語) | TAS5508-5121K8EVM User's Guide (Rev. B) | 2007年 11月 28日 | ||||
| EVM ユーザー ガイド (英語) | TAS5508-5122C6EVM User's Guide (Rev. A) | 2006年 4月 26日 | ||||
| アプリケーション・ノート | PSRR for Purepath Digital Audio Amplifiers | 2005年 4月 15日 | ||||
| アプリケーション・ノート | Click and Pop Measurement Technique | 2005年 4月 1日 | ||||
| EVM ユーザー ガイド (英語) | TAS5508-5122C6EVM User's Guide | 2004年 9月 10日 | ||||
| アプリケーション・ノート | PurePath Digital™ のAM干渉回避方法 | 2004年 8月 24日 | ||||
| アプリケーション・ノート | Implementation of Power Supply Volume Control | 2004年 6月 23日 |
設計と開発
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PSPICE-FOR-TI — TI Design / シミュレーション・ツール向け PSpice®
設計とシミュレーション向けの環境である PSpice for TI (...)
| パッケージ | ピン数 | ダウンロード |
|---|---|---|
| TQFP (PAG) | 64 | オプションの表示 |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 材質成分
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点