LMP8480
Strommessverstärker, 4 bis 76 V
LMP8480
- Typical Values: TA = 25°C
- 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
- Temperature Range: –40°C to 125°C
The LMP8480 and LMP8481 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) or unidirectional (LMP8480) current applications and accept input signals with 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 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 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 wide operating temperature range of –40°C to 125°C makes the LMP848x an ideal choice for automotive, telecommunications, industrial, and consumer applications. The LMP8480 and LMP8481 are pin-for-pin replacements for the MAX4080 and MAX4081, offering improved offset voltage, wider reference adjust range and higher output drive capabilities. The LMP8480 and LMP8481 are available in a 8-pin VSSOP package.
Technische Dokumentation
Typ | Titel | Datum | ||
---|---|---|---|---|
* | Data sheet | LMP848x Precision 76-V High-Side Current Sense Amplifiers With Voltage Output datasheet (Rev. E) | PDF | HTML | 27 Feb 2017 |
Application brief | Improving Power Amplifier Efficiency With Current Monitors (Rev. B) | PDF | HTML | 24 Jul 2023 | |
E-book | An Engineer's Guide to Current Sensing (Rev. B) | 12 Apr 2022 | ||
Application note | Using a PCB Copper Trace as a Current-Sense Shunt Resistor | PDF | HTML | 25 Jan 2022 | |
User guide | LMP8480EVM Current Shunt Monitors Guide (Rev. A) | 19 Mär 2013 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
LMP848XMMEVM-X — Evaluierungstool für LMP8480 und LMP8481
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 (...)
LMP8480 TINA-TI Reference Design (Rev. B)
CIRCUIT060035 — Bidirektionale Strommessung mit einem Fensterkomparatorschaltkreis
CIRCUIT060037 — Präziser Überstrom-Haltespeicher-Schaltkreis
PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool
TINA-TI — SPICE-basiertes analoges Simulationsprogramm
TIDA-00302 — Strom-Shunt-Monitor mit transienter Robustheit – Referenzdesign
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
PMP30047 — Referenzdesign für Ladegerät, 16 V bis 32 Volt bei 2 A, für Bleisäureakku mit zwei Elementen von 170
Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
Bestellen & Qualität
- RoHS
- REACH
- Bausteinkennzeichnung
- Blei-Finish/Ball-Material
- MSL-Rating / Spitzenrückfluss
- MTBF-/FIT-Schätzungen
- Materialinhalt
- Qualifikationszusammenfassung
- Kontinuierliches Zuverlässigkeitsmonitoring
- Werksstandort
- Montagestandort
Support und Schulungen
TI E2E™-Foren mit technischem Support von TI-Ingenieuren
Inhalte werden ohne Gewähr von TI und der Community bereitgestellt. Sie stellen keine Spezifikationen von TI dar. Siehe Nutzungsbedingungen.
Bei Fragen zu den Themen Qualität, Gehäuse oder Bestellung von TI-Produkten siehe TI-Support.