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TPA2018D1YZFT Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte TPA2018D1YZFT
Spiegazioni elettronici  3-W Mono Class-D Audio Amplifier with SmartGain AGC/DRC
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

TPA2018D1YZFT Scheda tecnica(HTML) 1 Page - Texas Instruments

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1
FEATURES
DESCRIPTION
SIMPLIFIED APPLICATION DIAGRAM
APPLICATIONS
IN-
IN+
PGND
OUT+
OUT-
ToBattery
SDA
SCL
EN
MasterEnable
TPA2018D1
Digital
BaseBand
Analog
Baseband
or
CODEC
PVDD
10 F
m
C
1 F
(Optional)
IN
m
I CClock
2
I CData
2
TPA2018D1
www.ti.com ................................................................................................................................................................................................ SLOS592 – AUGUST 2009
3-W Mono Class-D Audio Amplifier with SmartGain™ AGC/DRC
23
• Filter-Free Class-D Architecture
The TPA2018D1 is a mono, filter-free Class-D audio
power amplifier with volume control, dynamic range
• 3 W Into 4 Ω at 5 V (10% THD+N)
compression (DRC) and automatic gain control
• 880 mW Into 8 Ω at 3.6 V (10% THD+N)
(AGC). It is available in a 1.63 mm x 1.63 mm WCSP
• Power Supply Range: 2.5 V to 5.5 V
package.
• Flexible Operation With/Without I2C™
The
DRC/AGC
function
in
the
TPA2018D1
is
• Programmable DRC/AGC Parameters
programmable
via
a
digital
I2C
interface.
The
DRC/AGC function can be configured to automatically
• Digital I2C™ Volume Control
prevent distortion of the audio signal and enhance
• Selectable Gain from –28 dB to 30 dB in 1-dB
quiet passages that are normally not heard. The
Steps (when compression is used)
DRC/AGC can also be configured to protect the
• Selectable Attack, Release and Hold Times
speaker from damage at high power levels and
compress the dynamic range of music to fit within the
• 4 Selectable Compression Ratios
dynamic range of the speaker. The gain can be
• Low Supply Current: 1.8 mA
selected from –28 dB to +30 dB in 1-dB steps. The
• Low Shutdown Current: 0.2 µA
TPA2018D1 is capable of driving 3 W at 5 V into 4
Ω load or 880 mW at 3.6 V into 8 Ω load. The device
• High PSRR: 80 dB
features hardware and software shutdown controls
• Fast Start-up Time: 5 ms
and also provides thermal and short-circuit protection.
• AGC Enable/Disable Function
In addition to these features, a fast start-up time and
• Limiter Enable/Disable Function
small package size make the TPA2018D1 an ideal
• Short-Circuit and Thermal Protection
choice for cellular handsets, PDAs and other portable
applications.
• Space-Saving Package
1,63 mm × 1,63 mm Nano-Free™ WCSP
(YZF)
• Wireless or Cellular Handsets and PDAs
• Portable Navigation Devices
• Portable DVD Player
• Notebook PCs
• Portable Radio
• Portable Games
• Educational Toys
• USB Speakers
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
SmartGain, Nano-Free are trademarks of Texas Instruments.
3
I2C is a trademark of NXP Semiconductors.
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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