LMP8480-Q1
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the
Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- Bidirectional or Unidirectional Sensing
- Common Mode Voltage Range: 4.0 V to 76 V
- Supply Voltage Range: 4.5 V to 76 V
- Fixed Gains: 20, 60, and 100 V/V
- Gain Accuracy: ±0.1%
- Offset: ±80 µV
- Bandwidth (–3 dB): 270 kHz
- Quiescent Current: < 100 µA
- Buffered High-Current Output: > 5 mA
- Input Bias Current: 7 µA
- PSRR (DC): 122 dB
- CMRR (DC): 124 dB
The automotive-qualified LMP8480-Q1 and LMP8481-Q1 devices are precision, high-side, current-sense amplifiers that amplify a small differential voltage developed across a current-sense resistor in the presence of high input common-mode voltages. These amplifiers are designed for bidirectional (LMP8481-Q1) or unidirectional (LMP8480-Q1) current applications and accept input signals with a common-mode voltage range from 4 V to 76 V with a bandwidth of 270 kHz. Because the operating power-supply range overlaps the input common-mode voltage range, the LMP848x-Q1 can be powered by the same voltage that is being monitored. This benefit eliminates the need for an intermediate supply voltage to be routed to the point of load where the current is being monitored, resulting in reduced component count and board space.
The LMP848x-Q1 family consists of fixed gains of 20, 60, and 100 for applications that demand high accuracy over temperature. The low-input offset voltage allows the use of smaller sense resistors without sacrificing system error. The LMP8480-Q1 and LMP8481-Q1 are pin-for-pin replacements for the MAX4080 and MAX4081 devices, offering improved offset voltage, wider reference adjust range, and higher output drive capabilities. The LMP8480-Q1 and LMP8481-Q1 are available in an 8-pin VSSOP package.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | LMP848x-Q1 Automotive, 76-V, High-Side, High-Speed, Current-Sense Amplifier データシート (Rev. A) | PDF | HTML | 2017/02/24 | ||
| アプリケーション・ノート | PCB の銅箔パターンを電流センスの シャント抵抗として使用する方法 | PDF | HTML | PDF | HTML | 2026/05/01 | ||
| ユーザー・ガイド | LMP8480EVM Current Shunt Monitors Guide (Rev. A) | 2013/03/19 |
設計と開発
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LMP848XMMEVM-X — LMP8480 および LMP8481 評価ツール
The Texas Instruments LMP8480/81 evaluation module (EVM) helps designers quickly evaluate the operation and performance of the LMP8480/81 76V Precision High Side Current Sense Amplifier. The EVM is ready to connect to power, load, and test instruments through the use of on-board terminals.
The EVM (...)
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
TIDA-00302 — 堅牢な過渡特性の電流シャント モニタ リファレンス デザイン
このハイサイド電流シャント モニタは、電流が電流検出抵抗を流れるときに、その両端に発生する電圧を測定するために使用されます。
さらに、サージおよび高速過渡現象から保護するための外部保護回路を実装しており、IEC61000-4-4 および IEC61000-4-5 に対するさまざまな耐性レベルを実証しています。
| 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 |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |