LM49151
- E2S Class D Amplifier
- Ground Referenced Outputs — Eliminates Output Coupling Capacitors
- I2C Programmable No Clip Function with Clip Control
- Voltage Limiter Speaker Protection
- I2C Volume and Mode Control
- Ear Piece Amplifier
- Advanced Click-and-Pop Suppression
- Low Supply Current
- Micro-Power Shutdown
- 20-bump DSBGA Package
Key Specifications
- Output Power at VDD = 3.3V THD+N ≤ 1%
- LS Mode, RL = 8Ω 520mW (Typ)
- HP Mode, RL = 32Ω 40mW (Typ)
- Output Power at VDD = 5V THD+N ≤ 1%
- LS Mode, RL = 8Ω 1.25W (Typ)
- HP Mode, RL = 32Ω 42mW (Typ)
- Output Offset
- LS Mode 15 6mV (Typ)
- HP Mode 15 2mV (Typ)
Boomer is a trademark of Texas Instruments. All trademarks are the property of their respective owners.
The LM49151 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. The LM49151 combines a 1.25W mono E2S class D amplifier, 125mW Class AB earpiece driver, 42mW/channel stereo ground referenced headphone drivers, volume control, input mixer/multiplexer, and speaker protection into a single device.
The LM49151 class D speaker amplifier features Texas Instruments' unique Automatic Level Control (ALC) that provides both a I2C programmable no-clip feature with Clip Controls and speaker protection. The E2S (Enhanced Emission Suppression) class D amplifier features a patented, ultra low EMI PWM architecture that significantly reduces RF emissions while preserving audio quality and efficiency while delivering 1.25W into an 8Ω load with <1% THD+N with a 5V supply. The 42mW/channel headphone drivers feature Texas Instruments' ground referenced architecture that creates a ground-referenced output from a single supply, eliminating the need for bulky and expensive DC-blocking capacitors, saving space and minimizing system cost.
The LM49151 features separate volume controls for the loudspeaker and headphone inputs. Mode selection, shutdown control, and volume are controlled through an I2C compatible interface. The LM49151's superior click and pop suppression eliminates audible transients on power-up/down and during shutdown.
技術資料
種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
---|---|---|---|---|---|---|
* | データシート | Mono Class D Audio Subsys w/Earpiece Drvr, Grnd Ref Hphne Amps, Spkr Pro データシート (Rev. F) | 2013年 3月 21日 | |||
ユーザー・ガイド | AN-1964 LM49151 Demonstration Board and Software Guide (Rev. A) | 2013年 5月 1日 |
設計および開発
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パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
---|---|---|
DSBGA (YZR) | 20 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点