PDF《PurePath Digital AMPLIFIER》

TAS5110A SLES079A C APRIL

2003 C REVISED MAY

2003 PurePath Digital? AMPLIFIER TAS5110A 50-W DIGITAL AMPLIFIER POWER STAGE FEATURES D

50 W RMS Power Into

6 ? at 10% THD D

40 W RMS Power Into

6 ? at 0.

1% THD D THD+N <

0.09% Typical (1-kHz Input Signal) D 93-dB Dynamic Range (TDAA System) D Power Efficiency >

90% Into 6-? and 8-? Load D Low Profile, SMD 32-Pin PowerPAD? Package D Self-Protecting Design D 3.3-V Digital Interface D EMI Compliant When Used With Recommended System Design APPLICATIONS D DVD Receiver D Home Theater D Mini/Micro Component Systems D Internet Music Appliance D Car Audio Amplifiers and Head Units DESCRIPTION The TAS5110A is a high-performance true-digital audio amplifier (TDAA) power stage, designed to drive

50 W per channel. The TAS5110A incorporates TI'

s Equibit? and PurePath Digital technology and is used in conjunction with a digital audio PWM processor (TAS50xx) to deliver high-power, true-digital audio amplification. The efficiency of this digital amplifier can be greater than 90%, reducing thesize of both the power supplies and heat sinks needed. The TAS5110A accepts a mono PWM 3.3-V input and controls the switching of an internal CMOS H-bridge. When used with the TAS50xx PWM processor, system performance of less than 0.09% THD is attainable. Overcurrent protection, overtemperature, and undervoltage protections are built into the TAS5110A, safeguarding the H-bridge and speakers against output shorts, overvoltage conditions, and other fault conditions that could damage the system. TYPICAL TDAA STEREO AUDIO SYSTEM Digital Audio ? TAS3001 ? DSP ? S/PDIF ?

1394 TAS50xx L-C Filter L-C Filter Left Right TAS5110A ? Volume ? EQ ? DRC ? Bass ? Treble ? Serial Audio Input Port ? Internal PLL ? PWM Processor ? Two H-Bridge Power Devices TAS5110A PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Pleasebe aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. www.ti.com Copyright ? 2003, Texas Instruments Incorporated PowerPAD, PurePath Digital, and Equibit are trademarks of Texas Instruments. TAS5110A SLES079A C APRIL

2003 C REVISED MAY

2003 www.ti.com

2 TERMINAL ASSIGNMENTS The TAS5110A is offered in a thermally enhanced 32-pin TSSOP surface-mount package (DAD). The DAD package has the PowerPAD on top.

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18 17 PWM_BP PWM_BM RESET PWDN BIAS_B BIAS_A VRFILT DVSS DVSS DVSS DVDD SHUTDOWN ERR0 ERR1 PWM_AM PWM_AP PVDDB2 LDROUTB BOOTSTRAPB PVDDB1 PVDDB1 OUTPUTB OUTPUTB PVSS PVSS OUTPUTA OUTPUTA PVDDA1 PVDDA1 BOOTSTRAPA LDROUTA PVDDA2 DAD PACKAGE (TOP VIEW) ORDERING INFORMATION TC PACKAGE TAPE AND REEL 0°C to 70°C TAS5110ADAD TAS5110ADADR REFERENCES 1. TAS5000 Digital Audio PWM Processor data manual (SLAS270) 2. True Digital Audio Amplifier TAS5001 Digital Audio PWM Processor data sheet (SLES009) 3. True Digital Audio Amplifier TAS5010 Digital Audio PWM Processor data sheet (SLAS328) 4. True Digital Audio Amplifier TAS5012 Digital Audio PWM Processor data sheet (SLES006) 5. Digital Audio Measurements application report (SLAA114) 6. PowerPAD Thermally Enhanced Package technical brief (SLMA002) TAS5110A SLES079A C APRIL