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TPA2051D3YFFR Arkusz danych(PDF) 1 Page - Texas Instruments |
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TPA2051D3YFFR Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 33 page 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 Ω 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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