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TAS5028 Datasheet(PDF) 9 Page - Texas Instruments |
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TAS5028 Datasheet(HTML) 9 Page - Texas Instruments |
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9 / 84 page  Introduction 1 SLES112 — June 2004 TAS5028 1 Introduction The TAS5028 is an eight channel digital pulse width modulator (PWM) that provides both advanced performance and a high level of system integration. The TAS5028 is designed to interface seamlessly with most audio digital signal processors. The TAS5028 automatically adjusts control configurations in response to clock and data rate changes and idle conditions. This enables the TAS5028 to provide an easy to use control interface with relaxed timing requirements. The TAS5028 can drive eight channels of H-bridge power stages. Texas Instruments H-bridge parts TAS5111, TAS5112, or TAS5182 + FETs are designed to work seamlessly with the TAS5028. The TAS5028 supports both single-ended or bridge tied load configurations. The TAS5028 also provides a high performance differential output to drive an external differential input analog headphone amplifier (such as the TPA112). The TAS5028’s uses an AD modulation operating at a 384-kHz switching rate for 48-, 96-, and 192-kHz data. The 8x oversampling combined with the 5th order noise shaper provides a broad flat noise floor and excellent dynamic range from 20 Hz to 20 kHz. The TAS5028 is clock slave only device. The TAS5028 receives MCLK, SCLK and LRCLK from other system components. The TAS5028 accepts master clock rates of 128, 192, 256, 384, 512, and 768 Fs. The TAS5028 accepts a 64-Fs bit clock. PWM_HPP& MR PWM_HPP & ML MCLK XTL_ OUT XTL_ IN PLL_FLTM PLL_FLTP OSC CAP SCLK LRCLK SDIN1 SDIN2 SDIN3 SDIN4 SDA SCL PWM Section Serial Cntrl IF PWM AP& Am7 Center PWM AP& AM4 R Sur PWM AP& AM3 L Sur PWM AP& AM8 Sub woofer PWM AP& AM1 L PWM AP& AM2 R PWM AP& AM5 L Back Sur PWM L Line Out PWM AP& AM6 R Back Sur PWM R Line Out Soft Tone Soft Tone Soft Tone Soft Tone Soft Tone Soft Tone Soft Tone Soft Tone Digital Audio Processor VALID Control 8 4 8 0 Det 0 Det 0 Det 0 Det 0 Det 0 Det 0 Det 0 Det 8 8 9 PWM De Emph Interpo late NS SRC DC Block PWM De Emph Interpo late NS SRC DC Block PWM De Emph Interpo late NS SRC DC Block PWM De Emph Interpo late NS SRC DC Block PWM De Emph Interpo late NS SRC DC Block PWM De Emph Interpo late NS SRC DC Block PWM De Emph Interpo late NS SRC DC Block PWM De Emph Interpo late NS SRC DC Block Volume Control Power Supply Soft Vol Soft Vol Soft Vol Soft Vol Soft Vol Soft Vol Soft Vol Soft Vol 8 RESET PDN MUTE HP_SEL BKND_ERR Figure 1 - 1. TAS5028 Functional Structure |
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