TAS5112ADFDRG4

Manufacturer Part NumberTAS5112ADFDRG4
DescriptionIC AMP AUDIO PWR 62W D 56TSSOP
ManufacturerTexas Instruments
SeriesPurePath Digital™
TypeClass D
TAS5112ADFDRG4 datasheet
 


Specifications of TAS5112ADFDRG4

Output Type2-Channel (Stereo)Max Output Power X Channels @ Load62W x 2 @ 6 Ohm
Voltage - Supply16 V ~ 25.5 VFeaturesDepop, Digital Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
Mounting TypeSurface MountPackage / Case56-TSSOP Exposed Pad, 56-eTSSOP, 56-HTSSOP
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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DIGITAL AMPLIFIER POWER STAGE
FEATURES
D
50 W per Channel (BTL) Into 6 Ω (Stereo)
D
95-dB Dynamic Range With TAS5026
D
Less Than 0.1% THD+N (1 W RMS Into 6 Ω)
D
Less Than 0.2% THD+N (50 W RMS into 6 Ω)
D
Power Efficiency Typically 90% Into 6-Ω Load
D
Self-Protecting Design (Undervoltage,
Overtemperature and Short Conditions) With
Error Reporting
D
Internal Gate Drive Supply Voltage Regulator
D
EMI Compliant When Used With
Recommended System Design
THD + NOISE vs OUTPUT POWER
1
= 6 Ω
R
L
T
= 75°C
C
0.1
0.01
100m
1
P
- Output Power - W
O
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.
PurePath Digital and PowerPAD are trademarks of Texas Instruments.
Other trademarks are the property of their respective owners.
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.
APPLICATIONS
D
DVD Receiver
D
Home Theatre
D
Mini/Micro Component Systems
D
Internet Music Appliance
DESCRIPTION
The TAS5112A is a high-performance, integrated stereo
digital amplifier power stage designed to drive 6-Ω
speakers at up to 50 W per channel. The device
incorporates TI’s PurePath Digitalt technology and is
used with a digital audio PWM processor (TAS50XX) and
a simple passive demodulation filter to deliver high-quality,
high-efficiency, true-digital audio amplification.
The efficiency of this digital amplifier is typically 90%,
reducing the size of both the power supplies and heatsinks
needed.
protection, and undervoltage protection are built into the
TAS5112A, safeguarding the device and speakers against
fault conditions that could damage the system.
1
0.1
0.01
0.001
10
100
20
TAS5112A
SLES094B - OCTOBER 2003 - REVISED JUNE 2008
Overcurrent
protection,
overtemperature
THD + NOISE vs FREQUENCY
= 6 Ω
R
L
T
= 75°C
C
P
= 50 W
O
P
= 10 W
O
P
= 1 W
O
100
1k
f - Frequency - Hz
Copyright © 2008, Texas Instruments Incorporated
TM
10k
20k

TAS5112ADFDRG4 Summary of contents

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    ... P - Output Power - W O 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. PurePath Digital and PowerPAD are trademarks of Texas Instruments. Other trademarks are the property of their respective owners. ...

  • Page 2

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS ...

  • Page 3

    Absolute Maximum Ratings over operating free-air temperature range unless otherwise noted TAS5112A DVDD TO DGND GVDD TO GND PVDD_X TO GND (dc voltage) (2) PVDD_X TO GND (spike voltage ) OUT_X TO GND (dc voltage) (2) OUT_X TO GND ...

  • Page 4

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 TERMINAL NAME DFD NO. DCA NO. BST_A 31 54 BST_B 42 43 BST_C 43 42 BST_D 54 31 DGND 23 6 DREG 16 13 DREG_RTN 12 17 DVDD 25 4 GND ...

  • Page 5

    FUNCTIONAL BLOCK DIAGRAM PWM_AP PWM Receiver RESET PWM_BP PWM Receiver To Protection Blocks OTW OT Protection SD UVP This diagram shows one channel. GREG Gate Drive Timing Control Gate Drive Protection A GREG Protection B Gate Drive Timing Control ...

  • Page 6

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 RECOMMENDED OPERATING CONDITIONS (1) DVDD Digital supply Supply for internal gate drive and logic GVDD regulators PVDD_x Half-bridge supply T Junction temperature J ( recommended for DVDD to be ...

  • Page 7

    ELECTRICAL CHARACTERISTICS PVDD_x = 29.5 V, GVDD = 29.5 V, DVDD connected to DREG via a 100-Ω resistor, R SYMBOL PARAMETER INPUT/OUTPUT PROTECTION Set the DUT in normal operation mode with all the protections enabled. Sweep Undervoltage protection Undervoltage ...

  • Page 8

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 SYSTEM CONFIGURATION USED FOR CHARACTERIZATION 1 µF ERR_RCVY PWM_AP_1 PWM_AM_1 VALID_1 100 nF 13 PWM PROCESSOR 14 TAS5026 PWM_AP_2 18 PWM_AM_2 19 VALID_2 20 21 ...

  • Page 9

    TYPICAL CHARACTERISTICS AND SYSTEM PERFORMANCE OF TAS5112ADFD EVM WITH TAS5026 PWM PROCESSOR TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY Ω 75° 0 ...

  • Page 10

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 SYSTEM OUTPUT STAGE EFFICIENCY vs OUTPUT POWER 100 ...

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    SLES094B - OCTOBER 2003 - REVISED JUNE 2008 ON-STATE RESISTANCE vs JUNCTION TEMPERATURE 100 - Junction Temperature - °C T ...

  • Page 12

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 Figure 10. Typical Single-Ended Design With TAS5112A DCA 12 www.ti.com ...

  • Page 13

    THEORY OF OPERATION POWER SUPPLIES The power device only requires two supply voltages, GVDD and PVDD_X. GVDD is the gate drive supply for the device, regulated internally down to approximately 12 V, and decoupled with regards to board GND ...

  • Page 14

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 In practice this means that the DVDD-to-PWM processor (front-end) should be stable and initialization should be completed before RESET is de-asserted to the back end. CONTROL I/O Shutdown Pin: SD The ...

  • Page 15

    Timing and Function The function of the autorecovery circuit is as follows error event occurs and sets the protection latch (output stage goes Hi-Z). 2. The counter is started. 3. After n/2 cycles, the protection latch is ...

  • Page 16

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 should remain stable within the range of peak current seen at maximum output power and deliver at least 5 µH of inductance this rule is observed, the ...

  • Page 17

    Heatsink thermal resistance is generally predicted by the heatsink vendor, modeled using a continuous flow dynamics (CFD) model, or measured. Thus, for a single monaural IC, the system R thermal grease resistance + heatsink resistance. Table 4, Table 5, ...

  • Page 18

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 Thermal Pad 3, DCA THERMAL INFORMATION The thermally enhanced DCA package is based on the 56-pin HTSSOP, but includes a thermal pad (see Figure 14) to provide ...

  • Page 19

    The lower via pad area, slightly larger than the IC pad itself, is exposed with a window in the solder resist on the bottom surface of the board not coated with solder during the board construction to ...

  • Page 20

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 Insulating Front Panel PCB (3.65C/W) Stereo Amplifier Board Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Ó Wakefield Type 126 ...

  • Page 21

    LAND PATTERN 7 × 13 vias (5 × 10 mm) 5 × 11 vias (4 × 8 mm) Thermal Pad 3,90 mm 2,98 mm Figure 17. Thermal Pad Dimensions for DCA Package CLICK AND POP REDUCTION TI modulators feature ...

  • Page 22

    TAS5112A SLES094B - OCTOBER 2003 - REVISED JUNE 2008 REFERENCES 1. TAS5000 Digital Audio PWM Processor data manual—TI (SLAS270) 2. True Digital Audio Amplifier TAS5001 Digital Audio PWM Processor data sheet—TI (SLES009) 3. True Digital Audio Amplifier TAS5010 Digital Audio ...

  • Page 23

    ... TAS5112ADFD ACTIVE TAS5112ADFDG4 ACTIVE TAS5112ADFDR ACTIVE TAS5112ADFDRG4 ACTIVE (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design ...

  • Page 24

    TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing TAS5112ADCAR HTSSOP DCA TAS5112ADFDR HTSSOP DFD PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 56 2000 330.0 24.4 8.6 56 ...

  • Page 25

    Device Package Type TAS5112ADCAR HTSSOP TAS5112ADFDR HTSSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) DCA 56 2000 DFD 56 2000 Pack Materials-Page 2 23-Jun-2008 Width (mm) Height (mm) 346.0 346.0 41.0 346.0 346.0 ...

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    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...