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TAS5110A
SLES079A – APRIL 2003 – REVISED MAY 2003
PurePath Digital AMPLIFIER TAS5110A 50-W DIGITAL AMPLIFIER POWER STAGE
FEATURES D 50 W RMS Power Into 6 Ω at 10% THD D 40 W RMS Power Into 6 Ω 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-Ω and 8-Ω
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 the size 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
• Volume • EQ • DRC • Bass • Treble
Left TAS5110A
TAS50xx
Right
TAS5110A
L-C Filter
L-C Filter
• Serial Audio Input Port • Internal PLL • PWM Processor
• Two H-Bridge Power Devices
Please be 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. PowerPAD, PurePath Digital, and Equibit are trademarks of Texas Instruments.
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.
Copyright 2003, Texas Instruments Incorporated
TAS5110A
SLES079A – APRIL 2003 – REVISED MAY 2003
www.ti.com
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.
DAD PACKAGE (TOP VIEW)
PWM_BP
1
PWM_BM
2
RESET
3
PWDN
4
BIAS_B
5
BIAS_A
6
VRFILT
7
DVSS
8
DVSS
9
DVSS
10
DVDD
11
SHUTDOWN
12
ERR0
13
ERR1
14
PWM_AM
15
PWM_AP
16
32
PVDDB2
31
LDROUTB
30
BOOTSTRAPB
29
PVDDB1
28
PVDDB1
27
OUTPUTB
26
OUTPUTB
25
PVSS
24
PVSS
23
OUTPUTA
22
OUTPUTA
21
PVDDA1
20
PVDDA1
19
BOOTSTRAPA
18
LDROUTA.