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Product Overview
The LM4550BVH/NOPB is a high-performance AC'97 Rev 2.1 audio codec from Texas Instruments, designed for PC audio and embedded systems. It integrates a 48-pin LQFP package (7x7 mm) and operates at 3.3V, providing stereo 18-bit DAC and 18-bit ADC with sample rates up to 48 kHz. The device supports full-duplex operation, multiple sample rates, and includes a headphone amplifier, line-level inputs, and GPIO functionality.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage |
3.3V ± 0.3V |
| DAC Resolution |
18-bit |
| ADC Resolution |
18-bit |
| Sample Rate |
8 kHz to 48 kHz |
| SNR (DAC) |
90 dB typical |
| SNR (ADC) |
85 dB typical |
| THD+N |
-80 dB typical |
| Output Power (Headphone) |
50 mW per channel into 32Ω |
| Package |
48-LQFP (7x7 mm) |
| Operating Temperature |
-40°C to +85°C |
Key Features
- AC'97 Rev 2.1 compliant
- Stereo 18-bit DAC and ADC
- Sample rates from 8 kHz to 48 kHz
- Full-duplex operation
- Integrated headphone amplifier
- Line-level stereo inputs
- GPIO pins for control
- Power-down modes for low power
- 3.3V single supply
Target Applications
- PC motherboards and sound cards
- VoIP phones and conferencing systems
- 5G base station audio interfaces
- Automotive dashboard infotainment
- Industrial control panels with audio
- Portable audio devices
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LM4550BVH/NOPB. Our core advantages include:
-
24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
-
In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
-
BOM Kitting & Sampling Services: Specialized sourcing for
testing samples and urgent shortage components.
Quality Assurance & Compliance
Jasin Chip guarantees that all delivered products are 100% original factory stock
with full quality assurance and traceability.
-
100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
-
RoHS Compliant: All electronic components comply with international
environmental and safety standards.
-
Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
LM4550BVH/NOPB 是德州儀器推出的一款高性能 AC'97 Rev 2.1 音頻編解碼器,專為 PC 音頻和嵌入式系統設計。它採用 48 引腳 LQFP 封裝(7x7 mm),工作電壓為 3.3V,提供立體聲 18 位 DAC 和 18 位 ADC,採樣率最高可達 48 kHz。該器件支持全雙工操作、多種採樣率,並集成耳機放大器、線路輸入和 GPIO 功能。
詳細技術參數
| 參數 |
數值 |
| 供電電壓 |
3.3V ± 0.3V |
| DAC 分辨率 |
18 位 |
| ADC 分辨率 |
18 位 |
| 採樣率 |
8 kHz 至 48 kHz |
| 信噪比 (DAC) |
典型 90 dB |
| 信噪比 (ADC) |
典型 85 dB |
| 總諧波失真+噪聲 |
典型 -80 dB |
| 耳機輸出功率 |
每通道 50 mW(32Ω) |
| 封裝 |
48-LQFP(7x7 mm) |
| 工作溫度 |
-40°C 至 +85°C |
核心特性
- 符合 AC'97 Rev 2.1 標準
- 立體聲 18 位 DAC 和 ADC
- 採樣率 8 kHz 至 48 kHz
- 全雙工操作
- 集成耳機放大器
- 立體聲線路輸入
- GPIO 引腳用於控制
- 低功耗休眠模式
- 3.3V 單電源供電
典型應用場景
- PC 主板和聲卡
- VoIP 電話和會議系統
- 5G 基站音頻接口
- 汽車儀表盤信息娛樂系統
- 工業控制面板(帶音頻)
- 便攜式音頻設備
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 LM4550BVH/NOPB 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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全天候環球客戶支援:專業團隊為您提供即時報價及技術支援,無需漫長等待。
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現貨庫存,即日發貨:確保現貨充足。下午 4 點前確認訂單,即可安排當天寄出。
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Escrow 擔保交易:支援 Escrow.com 平台交易,保障買賣雙方權益,小批量訂單亦可安心在線下單。
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BOM 配單與樣板服務:提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。
品質保證與合規
Jasin Chip 承諾所有出貨產品均為原廠正貨,具備完善的品質保證及產品可追溯性。
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100% 原廠正貨:承諾所有供應零件均為原裝現貨,品質嚴格把關,來源清晰可追溯。
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符合 RoHS 認證:所有電子元器件均符合國際環保標準及相關安全認證。
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原廠封裝保護:嚴格保留原廠原始包裝及封條,確保物流過程中的靜電防護 (ESD) 與物理安全。
以上產品均為原廠正貨,提供 BOM 配單及現貨庫存支援,歡迎查詢。
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WhatsApp: +852 5209 9691 | Email: [email protected]