TPA2029D1 Datasheet, PDF (1/17 Pages) Texas Instruments – 3-W Mono Class-D Audio Amplifier With SmartGain™ AGC/DRC

TPA2029D1
www.ti.com
SLOS661A – DECEMBER 2011 – REVISED APRIL 2012
3-W Mono Class-D Audio Amplifier With SmartGain™ AGC/DRC
Check for Samples: TPA2029D1
FEATURES
1
•2 Filter-Free Class-D Architecture
• 3 W Into 4 Ω at 5 V (10% THD+N)
• 880 mW Into 8 Ω at 3.6 V (10% THD+N)
• Power Supply Range: 2.5 V to 5.5 V
• 3 Selectable AGC functions
• Low Supply Current: 1.8 mA
• Low Shutdown Current: 0.2 μA
• High PSRR: 80 dB
• Fast Start-up Time: 5 ms
• AGC Enable/Disable Function
• Limiter Enable/Disable Function
• Short-Circuit and Thermal Protection
• Space-Saving Package
– 1.63 mm × 1.63 mm WCSP (YZF)
APPLICATIONS
• Wireless or Cellular Handsets and PDAs
• Portable Navigation Devices
• Portable DVD Player
• Notebook PCs
• Portable Radio
• Portable Games
• Educational Toys
• USB Speakers
DESCRIPTION
The TPA2029D1 is a mono, filter-free Class-D audio
power amplifier with dynamic range compression
(DRC) and automatic gain control (AGC). It is
available in a 1.63 mm x 1.63 mm WCSP package.
The DRC/AGC function in the TPA2029D1 can be
enabled and disabled. The DRC/AGC function is
configured to automatically prevent distortion of the
audio signal and enhance quiet passages that are
normally not heard. The DRC/AGC is also configured
to protect the speaker from damage at high power
levels and compress the dynamic range of music to fit
within the dynamic range of the speaker. The
TPA2029D1 is capable of driving 3 W at 5 V into 4Ω
load or 880 mW at 3.6 V into 8Ω load. The device
features an enable pin and also provides thermal and
short circuit protection.
In addition to these features, a fast start-up time and
small package size make the TPA2029D1 an ideal
choice for Notebook PCs, PDAs and other portable
applications.
TPA2029D1 is available with different default
AGC/DRC settings for various system requirements.
See Table 2 for more detail.
SIMPLIFIED APPLICATION DIAGRAM
To Battery
10 mF
PVdd
Analog
Baseband
or
CODEC
C_IN 1 mF
TPA2029D1
(Optional)
OUT+
IN-
IN+
OUT-
Digital
BaseBand
AGC1
GPIO
AGC2
Master Enable
EN
PGND
1
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.
SmartGain is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011–2012, Texas Instruments Incorporated