LMH5485-SP
- QMLV (QML class V) MIL-PRF-38535 qualified, SMD 5962R1920401VXC
- TID assured for every wafer lot up to 100krad (Si)
- Single event latch-up (SEL) immune to LET = 77MeV-cm2/mg
- Qualified over the military temperature range: –55°C to +125°C
- Gain bandwidth product (GBWP): 850MHz
- Slew rate: 1400V/µs
- HD2, HD3: –111dBc, –149dBc (100kHz, 2VPP)
- Input voltage noise: 2.4nV/√Hz
- Low offset drift: ±0.5µV/°C (typical)
- Negative rail input (NRI), rail-to-rail output (RRO)
- Power supply:
- Supply voltage range: 2.7V to 5.4V
- Quiescent current: 10.1mA
- Power-down capability: 2µA (typical)
The LMH5485-SP is a radiation-hardened assured, low-power, voltage-feedback, fully differential amplifier (FDA). This device is able to achieve a high gain bandwidth product (GBWP) of 850MHz to maintain excellent distortion performance over a wide range of frequencies. This wide bandwidth range is also achieved with a relatively low power consumption of 10.1mA and broadband voltage noise of 2.4nV/√Hz. These features make the LMH5485-SP an excellent choice for power-sensitive data acquisition systems with frequencies > 10MHz that require both the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).
The LMH5485-SP features the negative-rail input required when interfacing with a dc-coupled, ground-centered source signal. This negative-rail input with a rail-to-rail output allows for easy interface between single-ended, ground-referenced, bipolar signal sources and a wide variety of successive approximation register (SAR), delta-sigma (ΔΣ), or pipeline ADCs using only a single 2.7V to 5.4V power supply. The LMH5485-SP also features a low offset voltage drift of ±0.5µV/°C to maintain excellent dc performance over a wide temperature range of –55°C to +125°C.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | LMH5485-SP Radiation Hardened Assured , Negative Rail Input, Rail-to-Rail Output, Precision, 850MHz Fully Differential Amplifier datasheet (Rev. C) | PDF | HTML | 2026/6/9 | ||
| 選擇指南 | TI Space Products (Rev. L) | 2026/3/27 | ||||
| Application brief | DLA Approved Optimizations for QML Products (Rev. C) | PDF | HTML | 2025/6/17 | |||
| Application brief | Analog Front-End Design With Texas Instruments’ Tooling Landscape | PDF | HTML | 2022/3/7 | |||
| 證書 | LMH5485-SP-EVM EU RoHS Declaration of Conformity (DoC) | 2021/8/31 |
設計與開發
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LMH5485-SP-EVM — 適用於 850-MHz 全差動放大器的 LMH5485-SP 評估模組
LMH5485-SP-EVM 是一款通用、未組裝的印刷電路板 (PCB)，專為評估採用 HKX (CFP-8) 封裝之 LMH5485-SP 時提供最佳佈線而設計。LMH5485-SP 為一抗輻射 (RHA) 負軌輸入、軌至軌輸出 (RRO)、精密、850-MHz 全差動放大器。開始評估時只需幾個零組件。為了避免寄生零組件電感，電路板只接受表面裝貼電阻器和電容器。此 EVM 設計適用於輸入和輸出端的 50-Ω 實驗室設備，以及輸入和輸出端的換衡器配置，可在單端和差動訊號之間進行簡單轉換。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| CFP (HKX) | 8 | Ultra Librarian |