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Texas Instruments TAS5122 Data Sheet

Summary

The TAS5122 is a high-performance digital audio amplifier power stage designed for stereo amplification, capable of driving 6-Ω speakers up to 30W RMS per channel while featuring advanced self-protection safeguards. This manual provides essential technical specifications and guidelines for audio system designers, detailing absolute maximum ratings, dissipation limits, thermal management strategies, and operational criteria. It is ideal for integrating high-efficiency, true-digital sound into home theatre systems or mini component stereo equipment.

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Page 1 Text Content

查询TAS5122供应商

+N ta l H ar ic is to rt io is

www.ti.com

SLES088D – AUGUST 2003 – REVISED MAY 2004

FEATURES APPLICATIONS

DVD Receiver 2 × 30 W (BTL) Into 6 Ω at 1 k Hz Home Theatre Mini/Micro Component Systems

95-d B Dynamic Range (in System With

Internet Music Appliance

TAS5026)

DESCRIPTION

< 0.2% THD+N (in System – 30 W RMS Into

6-Ω Resistive Load) The TAS5122 is a high-performance, integrated stereo digital amplifier power stage designed to drive 6-Ω

Device Power Efficiency Typical >90% Into speakers at up to 30 W per channel. The device 6-Ω Load incorporates TI’s Pure Path Digital technology and is

used with a digital audio PWM processor (TAS50XX) and

Self-Protection Design (Including

a simple passive demodulation filter to deliver high-quality,

Undervoltage, Overtemperature, and Short +N ta l H ar ic is to rt io is

high-efficiency, true-digital audio amplification.

Conditions) With Error Reports

The efficiency of this digital amplifier is typically greater Internal Gate Drive Supply Voltage Regulator than 90%. Overcurrent protection, overtemperature protection, and undervoltage protection are built into the

EMI Compliant When Used With TAS5122, safeguarding the device and speakers against Recommended System Design fault conditions that could damage the system.

THD + NOISE vs OUTPUT POWER THD + NOISE vs FREQUENCY

RL = 6 Ω RL = 6 Ω TC = 75°C TC = 75°C

PO = 30 W

PO = 10 W

PO = 1 W

PO − Output Power − W f − Frequency − Hz

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.

Pure Path Digital and Power PAD are trademarks of Texas Instruments. Other trademarks are the property of their respective owners. ! "#$ !  %#&'" ($) (#"! Copyright  2004, Texas Instruments Incorporated "  !%$""! %$ *$ $!  $+! !#$! !(( ,-) (#" %"$!!. ($!  $"$!!'- "'#($ $!.  '' %$$!)

Page Summary Contents For Texas Instruments TAS5122 Data Sheet

Page 1 查询TAS5122供应商 +N ta l H ar ic is to rt io is www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 FEATURES APPLICATIONS DVD Receiver 2 × 30 W (BTL) Into 6 Ω at 1 k Hz Home Theatre Mini/Micro Component ...
Page 2 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or ...
Page 3 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 Terminal Functions TERMINAL FUNCTION(1) DESCRIPTION NAME NO. BST_A HS bootstrap supply (BST), external capacitor to OUT_A required BST_B HS bootstr...
Page 4 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 FUNCTIONAL BLOCK DIAGRAM BST_A PVDD_A Gate Drive PWM_AP OUT_A PWM Timing Receiver Control Gate Drive Protection A RESET BST_B PVDD_B Protection B G...
Page 5 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 RECOMMENDED OPERATING CONDITIONS MIN TYP MAX UNIT DVDD Digital supply (1) Relative to DGND 3.3 3.6 Supply for internal gate drive and logic GVDD Re...
Page 6 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 ELECTRICAL CHARACTERISTICS PVDD_x = 23 V, GVDD = 23 V, DVDD = 3.3 V, RL = 6 Ω, 8X fs = 384 k Hz, unless otherwise noted TYPICAL TCase= MIN/TYP/ SYM...
Page 7 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 SYSTEM CONFIGURATION USED FOR CHARACTERIZATION (BTL) Gate-Drive Power Supply External Power Supply H-Bridge Power Supply TAS5122 GND GND GND GVDD G...
Page 8 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 ro ce ss or Figure 1. Typical Single-Ended Design With TAS5122 DCA
Page 9 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 is lit +N ta l H ar ic is to rt io is TYPICAL CHARACTERISTICS TOTAL HARMONIC DISTORTION + NOISE TOTAL HARMONIC DISTORTION + NOISE vs vs OUTPUT POWE...
Page 10 to t − er ss www.ti.com tp t P er SLES088D – AUGUST 2003 – REVISED MAY 2004 OUTPUT POWER SYSTEM OUTPUT STAGE EFFICIENCY vs vs H-BRIDGE VOLTAGE OUTPUT POWER TC = 75°C RL = 6 Ω RL = 8 Ω f = 1 k Hz RL = ...
Page 11 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 AMPLITUDE ON-STATE RESISTANCE vs vs FREQUENCY JUNCTION TEMPERATURE RL = 8 Ω RL = 6 Ω -S ta te es is ta ce f − Frequency − Hz TJ − Junction Temperat...
Page 12 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 THEORY OF OPERATION use of non-TI PWM processors it is recommended to use a 4-kΩ pulldown resistor on each PWM output node to ground. This precharg...
Page 13 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 In practice this means that the DVDD-to-PWM processor The device can be recovered by toggling RESET low and should be stable and initialization sho...
Page 14 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 3. After n/2 cycles, the protection latch is APPLICATION INFORMATION cleared but the output stage remains Hi-Z DEMODULATION FILTER DESIGN AND (iden...
Page 15 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 In ct an ce µH Another parameter to be considered is the idle current loss THERMAL INFORMATION in the inductor. This can be measured or specified a...
Page 16 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 achieved by improving the thermal conduction paths that soldered to the board) should be similar to the design in the remove heat from the componen...
Page 17 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 Insulating Insulating Front Panel Plastic Top Back Panel PCB (3.6C/W) Stereo Amplifier 56-Pin DCA Package Board (1.14C/W) Wakefield Type 126 8-mm...
Page 18 www.ti.com SLES088D – AUGUST 2003 – REVISED MAY 2004 the output stage prior to operation is in the PCB THERMAL LAND PATTERN RESISTANCE high-impedance state, this is done by having a passive pulldown r...
Page 19 MECHANICAL DATA MPDS044 – JANUARY 1998 DCA (R-PDSO-G**) Power PAD PLASTIC SMALL-OUTLINE PACKAGE 48 PINS SHOWN Thermal Pad (See Note D) 0,15 NOM Gage Plane Seating Plane 1,20 MAX 0,10 PINS ** DIM A MA...
Page 20 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and servic...

Manual Details

Brand Texas Instruments
Pages 20
File Size 345.24 KB
Published June 18, 2026
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Frequently Asked Questions

How should I store the TAS5122 to prevent electrostatic damage?

The leads must be shorted together or the device needs to be placed in conductive foam during storage and handling.

What load resistance is the TAS5122 designed to operate with?

The amplifier is optimized for 6-Ω loads, delivering up to 30W per channel.

What critical aspect of system design must be considered when using this device?

Careful heatsink design is crucial due to the thermally enhanced top view package and exposed metal pad area.