TAS5111A

Manufacturer Part NumberTAS5111A
ManufacturerTexas Instruments
TAS5111A datasheet
 


Specifications of TAS5111A

Max. Power To Bridge Tied Load93Min. Supported Bridge Tied Load4
Closed/open LoopOpenMax. Number Of Speaker Outputs1
Input TypePWMControl TypeHardware
Analog Supply Min [v]16Analog Supply Max [v]30.5
Digital Supply Min [v]3Power Stage Supply Max(v)30.5
Pin/package32HTSSOP  
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DIGITAL AMPLIFIER POWER STAGE
FEATURES
D
70-W RMS Power (BTL) Into 4 Ω With Less
Than 0.2% THD+N
D
95-dB Dynamic Range (TDAA System With
TAS5026)
D
Power Efficiency Greater Than 90% Into 4-Ω
and 8-Ω Loads
− Smaller Power Supplies
D
Self-Protecting Design With Autorecovery
D
32-Pin TSSOP (DAD) PowerPAD Package
D
3.3-V Digital Interface
D
EMI-Compliant When Used With
Recommended System Design
APPLICATIONS
D
DVD Receiver
THD + NOISE vs OUTPUT POWER
1
R L = 4 Ω
T C = 75°C
0.1
0.01
100m
1
10
P O − Output Power − W
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.
D
Home Theatre
D
Mini/Micro Component Systems
D
Internet Music Appliance
DESCRIPTION
The TAS5111A is a high-performance digital amplifier
power stage designed to drive a 4-Ω speaker up to 70 W
with 0.2% distortion plus noise. The device incorporates
TI’s PurePath Digital technology and is used with a
digital audio PWM processor (TAS50XX) and a simple
passive demodulation filter to deliver high-quality,
high-efficiency digital audio amplification.
The efficiency of this digital amplifier can be greater than
90%, depending on the system design. Overcurrent
protection, overtemperature protection, and undervoltage
protection are built into the TAS5111A, safeguarding the
device and speakers against fault conditions that could
damage the system.
THD + NOISE vs FREQUENCY
1
R L = 4 Ω
T C = 75°C
0.1
P O = 1 W
P O = 10 W
0.01
0.001
100
20
100
f − Frequency − Hz
Copyright  2005, Texas Instruments Incorporated
TAS5111A
SLES111 − AUGUST 2005
TM
P O = 70 W
1k
10k
20k

TAS5111A Summary of contents

  • Page 1

    ... The efficiency of this digital amplifier can be greater than 90%, depending on the system design. Overcurrent protection, overtemperature protection, and undervoltage protection are built into the TAS5111A, safeguarding the device and speakers against fault conditions that could damage the system. THD + NOISE vs FREQUENCY Ω ...

  • Page 2

    ... GVDD voltage PACKAGE DISSIPATION RATINGS PACKAGE 32-Pin DAD TSSOP (1) The TAS5111A package is thermally enhanced for conductive cooling using an exposed metal pad area impractical to use the device with the pad exposed to ambient air as the only means for heat dissipation. For this reason, R θJA, a system parameter that characterizes the thermal treatment, is provided in the Application Information section of the data sheet ...

  • Page 3

    ... P Power supply input for half-bridge B PWM_AP 16 I Input signal, half-bridge A PWM_BP 1 I Input signal, half-bridge B RESET 3 I Reset signal, active-low Shutdown signal for half-bridges A and B, active-low ( input Output Power Terminal Functions DESCRIPTION DESCRIPTION TAS5111A SLES111 − AUGUST 2005 3 ...

  • Page 4

    ... TAS5111A SLES111 − AUGUST 2005 FUNCTIONAL BLOCK DIAGRAM PWM_AP PWM Receiver RESET PWM_BP PWM Receiver To Protection Blocks OTW OT Protection SD UVP 4 GREG Gate Drive Timing Control Gate Drive Protection A GREG Protection B Gate Drive Timing Control Gate Drive DREG GREG GREG DREG DREG_RTN www ...

  • Page 5

    ... TYPICAL OVER TEMPERATURE 40° 25° 25° 75° 0.05% 0.03% 0.2% 295 95 95 3.1 3.1 13.4 13 120 132 120 132 TAS5111A SLES111 − AUGUST 2005 TYP MAX UNIT 3.3 3.6 V 29.5 30.5 V 29.5 30 125 MIN/TYP/ UNITS to 85°C MAX W Typ W Typ W Typ W Typ ...

  • Page 6

    ... Demodulation Filter Design in the Application Information section of the data sheet and consider the recommended inductors and capacitors for optimal performance also important to consider PCB design and layout for optimum performance of the TAS5111A recommended to follow the TAS5026-5111KEVM (S/N 001) design and layout guidelines for best performance. ...

  • Page 7

    ... DVDD OUT_A PVDD_A 20 13 DGND PVDD_A OTW BST_A 1.5 Ω GND GND 17 16 PWM_AP GVDD TAS5111A SLES111 − AUGUST 2005 100 nF 100 nF 1.5 Ω L PCB 10 µH 4.7 kΩ 470 nF 100 nF 10 µH 4.7 kΩ 100 nF L PCB 1.5 Ω 100 nF 100 nF 7 ...

  • Page 8

    ... TAS5111A SLES111 − AUGUST 2005 TYPICAL CHARACTERISTICS AND SYSTEM PERFORMANCE OF TAS5111A EVM WITH TAS5026 PROCESSOR TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY Ω 75° 0 0.01 0.001 20 100 1k f − Frequency − Hz Figure 1 TOTAL HARMONIC DISTORTION + NOISE ...

  • Page 9

    ... T J − Junction Temperature − °C TAS5111A SLES111 − AUGUST 2005 POWER LOSS vs OUTPUT POWER − Output Power − W Figure 100 ...

  • Page 10

    ... PWM output node to ground. This precharges the bootstrap supply capacitors and discharges the output filter capacitor (see the Typical TAS5111A Application Configuration section). After GVDD has been applied, it takes approximately 800 µs to fully charge the BST capacitor. Within this time, RESET must be kept low ...

  • Page 11

    ... Normal operation, no errors/warnings Chip Protection The TAS5111A protection function is implemented in a closed loop with, for example, a system controller or other TI PWM processor (front-end) device. The TAS5111A contains three individual systems protecting the device against misuse. All of the error events covered result in the ...

  • Page 12

    ... TAS5111A SLES111 − AUGUST 2005 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 cleared but the output stage remains Hi-Z (identical to pulling RESET low) ...

  • Page 13

    ... If this rule is observed, the TAS5111A does not have distortion issues due to the output inductors, and overcurrent conditions do not occur due to inductor saturation in the output filter. Another parameter to be considered is the idle current loss in the inductor. This can be measured or specified as inductor dissipation (D) ...

  • Page 14

    ... RESET LH during a system start-up. To make this system work properly, the following design rules must be followed when using the TAS5111A back end: D The relative timing between the PWM_AP/M_x signals and their corresponding VALID_x signal ...

  • Page 15

    ... TAS5111ADAD ACTIVE TAS5111ADADG4 ACTIVE TAS5111ADADR ACTIVE TAS5111ADADRG4 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 16

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing TAS5111ADADR HTSSOP DAD PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 (mm) Diameter Width (mm) W1 (mm) 32 2000 330.0 24.4 8.6 Pack Materials-Page 1 19-Mar-2008 B0 (mm) K0 (mm Pin1 (mm) (mm) Quadrant 11 ...

  • Page 17

    ... Device Package Type TAS5111ADADR HTSSOP PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) DAD 32 2000 Pack Materials-Page 2 19-Mar-2008 Width (mm) Height (mm) 346.0 346.0 41.0 ...

  • Page 18

    ...

  • Page 19

    ... 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’ ...