TAS5112A
DIGITAL AMPLIFIER POWER STAGE

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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 Digital 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. 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.

· DVD Receiver
· Home Theatre
· Mini/Micro Component Systems
· Internet Music Appliance

TAS5111

UNITS
DVDD TO DGND
–0.3 V to 4.2 V
GVDD TO GND
33.5 V
PVDD_X TO GND (dc voltage)
33.5 V
PVDD_X TO GND (spike voltage(2))
48 V
OUT_X TO GND (dc voltage)
33.5 V
OUT_X TO GND (spike voltage(2))
48 V
BST_X TO GND (dc voltage)
48 V
BST_X TO GND (spike voltage(2))
53 V
GREG TO GND (3)
14.2 V
PWM_XP, RESET, M1, M2, M3, SD, OTW
–0.3 V to DVDD + 0.3 V
Maximum operating junction
temperature, TJ
–40℃ to 150℃
Storage temperature
–40℃ to 125℃

(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolutemaximum- rated conditions for extended periods may affect device reliability.

(2) The duration of voltage spike should be less than 100 ns; see application note SLEA025.

(3) GREG is treated as an input when the GREG pin is overdriven by GVDD of 12 V.

· 50 W per Channel (BTL) Into 6 Ω (Stereo)
· 95-dB Dynamic Range With TAS5026
· Less Than 0.1% THD+N (1 W RMS Into 6 Ω)
· Less Than 0.2% THD+N (50 W RMS into 6 Ω)
· Power Efficiency Typically 90% Into 6-Ω Load
· Self-Protecting Design (Undervoltage, Overtemperature and Short Conditions) With Error Reporting
· Internal Gate Drive Supply Voltage Regulator
· EMI Compliant When Used With Recommended System Design

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TAS1020BPFBR T-1 3/4 (5 mm), T-1 (3 mm), High Intensity, Double Heterojunction AlGaAs Red LED Lamps TAS1020BPFBRG4
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TAS106K035PIF CMOS 0 to 36 MHz Single Chip 8-bit Microcontroller TAS1505 Military Chassis Mount DC-DC Converters 10 to 300W Single, Dual, Triple Outputs
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TAS2600-T-2-ALL TAS3000J 16 Kbit, 8 Kbit, 4 Kbit, 2 Kbit and 1 Kbit (8-bit or 16-bit wide) MICROWIRE㈢ serial access EEPROM

Datasheet

Size: 405.56KB
Page: 21
PDF: TAS5112A.pdf
  • Description:
    DIGITAL AMPLIFIER POWER STAGE
  • MFG:
    TI [Texas Instruments]
 

Abstract


C0084C0065C0083C0053C0049C0049C0050C0065
SLES094A - OCTOBER 2003 - REVISED MARCH 2004
C0068C0073C0071C0073C0084C0065C0076 C0065C0077C0080C0076C0073C0070C0073C0069C0082 C0080C0079C0087C0069C0082 C0083C0084C0065C0071C0069
TM

FEATURES
C0068 50 W per Channel (BTL) Into 6 ? (Stereo)
C0068 95-dB Dynamic Range With TAS5026
C0068 Less Than 0.1% THD+N (1 W RMS Into 6 ?)
C0068 Less Than 0.2% THD+N (50 W RMS into 6 ?)
C0068 Power Efficiency Typically 90% Into 6-? Load
C0068 Self-Protecting Design (Undervoltage,
Overtemperature and Short Conditions) With
Error Reporting
C0068 Internal Gate Drive Supply Voltage Regulator
C0068 EMI Compliant When Used With
Recommended System Design
APPLICATIONS
C0068 DVD Receiver
C0068 Home Theatre
C0068 Mini/Micro Component Systems
C0068 Internet Music Appliance
DESCRIPTION
The TAS5112A is a high-performance, integrated stereo
digital amplifier power stage designed to drive 6-?
speakers at up to 50 W per channel. The device
incorporates TI’s PurePath DigitalC0116 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. 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.
P
O
- Output Power - W
100m
R
L
= 6 ?
T
C
= 75°C
1 10 100
0.01
0.1
1
THD+N - T
otal Harmonic Distortion + Noise - %
THD + NOISE vs OUTPUT POWER
f - Frequency - Hz
20 100 1k 10k
THD+N - T
otal Harmonic Distortion + Noise - %
0.001
0.1
1
20k
R
L
= 6 ?
T
C
= 75°C
0.01
THD + NOISE vs FREQUENCY
P
O
= 50 W
P
O
= 1 W
P
O
= 10 W
PurePath Digital and PowerPAD are trademarks of Texas Instruments.
Other trademarks are the property of their respective owners.
C0080C0082C0079C0068C0085C0067C0084C0073C0079C0078 C0068C0065C0084C0065 C0105C0110C0102C0111C0114C0109C0097C0116C0105C0111C0110 C0105C0115 C0099C0117C0114C0114C0101C0110C0116 C0097C0115 C0111C0102 C0112C0117C0098C0108C0105C0099C0097C0116C0105C0111C0110 C0100C0097C0116C0101C0046 C0080C0114C0111C0100C0117C0099C0116C0115
C0099C0111C0110C0102C0111C0114C0109 C0116C0111 C0115C0112C0101C0099C0105C0102C0105C0099C0097C0116C0105C0111C0110C0115 C0112C0101C0114 C0116C0104C0101 C0116C0101C0114C0109C0115 C0111C0102 C0084C0101C0120C0097C0115 C0073C0110C0115C0116C0114C0117C0109C0101C0110C0116C0115 C0115C0116C0097C0110C0100C0097C0114C0100 C0119C0097C0114C0114C0097C0110C0116C0121C0046
C0080C0114C0111C0100C0117C0099C0116C0105C0111C0110 C0112C0114C0111C0099C0101C0115C0115C0105C0110C0103 C0100C0111C0101C0115 C0110C0111C0116 C0110C0101C0099C0101C0115C0115C0097C0114C0105C0108C0121 C0105C0110C0099C0108C0117C0100C0101 C0116C0101C0115C0116C0105C0110C0103 C0111C0102 C0097C0108C0108 C0112C0097C0114C0097C0109C0101C0116C0101C0114C0115C0046
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.
www.ti.com
Copyright ? 2004, Texas Instruments Incorporated

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