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Texas Instruments TAS5112A Data Handbook/Manual

Summary

Technical datasheet for Texas Instruments TAS5112A high-performance integrated stereo digital amplifier power stage based on PurePath Digital technology, designed to drive 6Ω speakers at up to 50W per channel. Features 95dB dynamic range, less than 0.1% THD+N at 1W RMS into 6Ω, less than 0.2% THD+N at 50W RMS into 6Ω, and typically 90% power efficiency into 6Ω load minimizing heat sink and power supply size requirements. Includes comprehensive self-protecting design with undervoltage, overtemper

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www.ti.com

SLES094A - OCTOBER 2003 - REVISED MARCH 2004

FEATURES APPLICATIONS

DVD Receiver

50 W per Channel (BTL) Into 6 Ω (Stereo)

Home Theatre

95-d B Dynamic Range With TAS5026

Mini/Micro Component Systems

Less Than 0.1% THD+N (1 W RMS Into 6 Ω)

Internet Music Appliance

Less Than 0.2% THD+N (50 W RMS into 6 Ω)

DESCRIPTION

Power Efficiency Typically 90% Into 6-Ω Load

The TAS5112A is a high-performance, integrated stereo

Self-Protecting Design (Undervoltage,

digital amplifier power stage designed to drive 6-Ω

Overtemperature and Short Conditions) With

speakers at up to 50 W per channel. The device

Error Reporting

incorporates TI’s Pure Path Digital technology and is

Internal Gate Drive Supply Voltage Regulator used with a digital audio PWM processor (TAS50XX) and

a simple passive demodulation filter to deliver high-quality,

EMI Compliant When Used With

high-efficiency, true-digital audio amplification.

Recommended System Design

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The efficiency of this digital amplifier is typically 90%, reducing the size of both the power supplies and heatsinks needed. Overcurrent protection, overtemperature protection, and undervoltage protection are built into the TAS5112A, safeguarding the device and speakers against 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 = 50 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 TAS5112A Data Handbook/Manual

Page 1 +N To ta l H ar ic is to rt io is - % www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 FEATURES APPLICATIONS DVD Receiver 50 W per Channel (BTL) Into 6 Ω (Stereo) Home Theatre 95-d B Dynamic Ra...
Page 2 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage ...
Page 3 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 Terminal Functions TERMINAL FUNCTION(1) DESCRIPTION NAME NO. BST_A High-side bootstrap supply (BST), external capacitor to OUT_A required BST_B ...
Page 4 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 FUNCTIONAL BLOCK DIAGRAM BST_A PVDD_A Gate Drive OUT_A PWM_AP PWM Timing Receiver Control Gate Drive Protection A RESET BST_B PVDD_B Protection ...
Page 5 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 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...
Page 6 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 ELECTRICAL CHARACTERISTICS PVDD_x = 29.5 V, GVDD = 29.5 V, DVDD connected to DREG via a 100-Ω resistor, RL = 6 Ω, 8X fs = 384 k Hz, unless other...
Page 7 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 SYSTEM CONFIGURATION USED FOR CHARACTERIZATION Gate-Drive Power Supply External Power Supply H-Bridge Power Supply TAS5112ADFD GND GND GND GVDD ...
Page 8 +N To ta l H ar ic is to rt io is - % +N To ta l H ar www.ti.com ic is to rt io is - % SLES094A - OCTOBER 2003 - REVISED MARCH 2004 TYPICAL CHARACTERISTICS AND SYSTEM PERFORMANCE OF TAS5112A EVM WITH ...
Page 9 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 tp er - S ys te tp t S ta ff ic ie cy SYSTEM OUTPUT STAGE EFFICIENCY POWER LOSS vs vs OUTPUT POWER OUTPUT POWER f = 1 k Hz RL = 6 Ω TC = 75°C f ...
Page 10 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 ON-STATE RESISTANCE JUNCTION TEMPERATURE -S ta te es is ta ce TJ - Junction Temperature - °C Figure 9
Page 11 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 THEORY OF OPERATION 4.7-kΩ pulldown resistor on each PWM output node to ground. This precharges the bootstrap supply capacitors and discharges t...
Page 12 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 In practice this means that the DVDD-to-PWM processor The device can be recovered by toggling RESET low and (front-end) should be stable and ini...
Page 13 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 Timing and Function Table 3. Output Mode Selection The function of the autorecovery circuit is as follows: M3 OUTPUT MODE Bridge-tied load outpu...
Page 14 In ct an ce µH www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 should remain stable within the range of peak current seen In order to minimize the EMI effect of unbalanced ripple at maximum ou...
Page 15 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 Heatsink thermal resistance is generally predicted by the Table 5. Case 2 (2 × 50 W Unclipped Into 6 Ω, heatsink vendor, modeled using a continu...
Page 16 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 Other things that can affect the audible click level: The spectrum of the click seems to follow the speaker impedance vs. frequency curve—the hi...
Page 17 www.ti.com SLES094A - OCTOBER 2003 - REVISED MARCH 2004 MECHANICAL DATA
Page 18 PACKAGE OPTION ADDENDUM www.ti.com 16-May-2005 PACKAGING INFORMATION Orderable Device Status Package Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Type Drawing Qty TAS5112ADCA ACTIVE HT...
Page 21 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...
Page 22 WWW.ALLDATASHEET.COM Copyright © Each Manufacturing Company. All Datasheets cannot be modified without permission. This datasheet has been download from : www.All Data Sheet.com 100% Free Data Sheet S...

Manual Details

Brand Texas Instruments
Pages 22
File Size 401.89 KB
Published June 19, 2026
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Frequently Asked Questions

What precautions should be taken to prevent electrostatic damage?

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

What protection features does the TAS5112A incorporate?

It includes built-in overcurrent, undervoltage, and overtemperature protections to safeguard the system.

How should thermal management be handled for this device?

The package is thermally enhanced and requires conductive cooling; ambient air cannot be used as the sole heat sink.