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TPA2051D3YFFR Arkusz danych(PDF) 1 Page - Texas Instruments

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Numer części TPA2051D3YFFR
Szczegółowy opis  2.9 W/Channel Mono Class-D Audio Subsystem with DirectPath??Headphone Amplifier & SpeakerGuard?
Download  33 Pages
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

TPA2051D3YFFR Arkusz danych(HTML) 1 Page - Texas Instruments

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1
FEATURES
DESCRIPTION
APPLICATIONS
FM Tuner
ABB
Codec
(MP3)
TPA2051D3
MonoClass-D
plus
DirectPathTM
8 Dual-Mode
Speaker
Stereo
HeadphoneJack
Mono+
Mono-
Left
(SE)
Right
(SE)
Left
(SE)
Right
(SE)
Bypass+
Bypass-
TPA2051D3
www.ti.com ...................................................................................................................................................................................................... SLOS641 – JUNE 2009
2.9 W/Channel Mono Class-D Audio Subsystem with DirectPath™ Headphone Amplifier &
SpeakerGuard™
23
• Mono Class-D Amp: 730 mW into 8 Ω from 3.6
The TPA2051D3 is an audio subsystem with a mono
V Supply (1% THD)
Class-D
power
amplifier,
a
stereo
DirectPath
headphone amplifier, and bypass switches. The
• Class-D Bypass Switches
DirectPath headphone amplifier eliminates the need
• DirectPath™ Stereo Headphone Amplifier
for external dc-blocking output capacitors. The built-in
No Output Capacitors Required
charge pump creates a negative supply voltage for
the headphone amplifier, allowing a 0 V dc bias at the
• SpeakerGuard™ Automatic Gain Control
output. The DirectPath headphone amplifier drives
(AGC)
25 mW into 16
Ω speakers from a 4.2 V supply.
• One Differential Mono and Two Stereo
The subsystem includes three inputs: A differential
Single-Ended Inputs
mono input and two stereo single-ended (SE) inputs.
• 3:1 Input MUX with Mode Control
The stereo inputs are also configurable as differential
• 32-Step Volume Control for Both Input
mono inputs. Each input channel has an independent
Channels
volume control. Seven operating modes provide
input-to-output combinations and shutdown control.
• Independent Volume Controls for All Inputs
Operating mode and volume levels are controlled
• Independent Shutdown for Headphone and
over a 1.8 V compatible I2C interface.
Class-D Amplifiers
The TPA2051D3 uses SpeakerGuardTM technology to
• I2C™ Interface
prevent output clipping distortion and excessive
• Short-Circuit and Thermal-Overload Protection
power to the speaker and headphones.
• Operates from 2.5 V to 5.5 V
The Class-D amplifier includes a bypass mode. This
• 25-Ball 2,16 mm × 2,11 mm, 0,4 mm pitch
allows the baseband IC (BB) to directly drive the 8
WCSP
speaker. This is useful for dual-mode speaker phones
in voice–only mode.
The
Class-D
amplifier
uses
4.9
mA
and
the
• Smart Phones / Cellular Phones
DirectPath amplifier uses 4.1 mA of typical quiescent
• Portable Media Players
current. Total supply current reduces to less than
• Portable Gaming
1
µA in shutdown.
• Multimedia Platforms
The TPA2051D3 is available in a 25-bump 2,16 mm
× 2,11 mm, 0,4 mm pitch WCSP with less than
0.8 mm height.
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.
2
DirectPath, SpeakerGuard are trademarks of Texas Instruments.
3
I2C is a trademark of Phillips Electronics.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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