MP8110DK-LF-P - 40V High-Side Current Sense Amplifier | MPS
Référence : MP8110DK-LF-P ✓ ActifMP8110DK-LF-P Présentation
A high-side current-sense amplifier is an instrumentation amplifier that measures the small voltage developed across a sense resistor placed in the positive supply path. In the component hierarchy, it belongs to the current-sense amplifier family, instrumentation amplifier category, analog signal-conditioning ICs, and broader power-monitoring and power-management ecosystem. Unlike a low-side arrangement, high-side sensing keeps the load-current path at ground potential and supports direct monitoring of battery or system input current.
Key features include a wide 2.5 V to 40 V single-supply operating range, typical supply consumption of 12 µA, one amplifier channel, and a low-cost 8-MSOP implementation. The manufacturer identifies notebook computers, cell phones, and battery-powered systems as representative applications. An evaluation board is also available as the EV8110DS-00A, providing a practical platform for evaluating the device's output response and current-to-voltage relationship.
The MP8110 family uses a high-side sensing arrangement so that the input-side common-mode voltage can rise with the monitored bus while the measured differential signal remains small. Its 1 V output for a 5 A load condition provides a useful reference for the accompanying evaluation board. Designers should nevertheless verify the complete gain, output range, common-mode limits, offset, accuracy, and stability specifications against the current manufacturer datasheet before finalizing a production design.
Typical uses include battery charge monitoring, DC input-current measurement, load-current reporting, and system power-management feedback. The low 12 µA typical consumption is particularly relevant to portable equipment where every microampere contributes to standby demand. The device can also support power-path monitoring when the conductor being measured must remain at a high common-mode voltage relative to the system ground.
The primary design consideration is the sense-resistor and feedback-network implementation. Place the sense resistor where it can be measured cleanly, route the differential inputs as a short matched pair, and confirm that the expected output voltage remains inside the amplifier's operating range. Component values, resistor tolerance, trace resistance, and the amplifier's own accuracy will determine the final current-measurement error.
This page consolidates verified manufacturer specifications, distributor availability, a same-family drop-in alternative, application guidance, and practical selection considerations. It also distinguishes supplied facts from parameters that require confirmation in the manufacturer datasheet, supporting faster engineering evaluation without presenting unverified electrical values as established specifications.
Alternatives de remplacement direct pour MP8110DK-LF-P — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MP8110DK-LF-P (même facteur de forme et même empreinte).
MP8110DK-LF
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Voir la fiche technique →MP8110DK-LF-P Valeurs maximales et caractéristiques électriques
| Product Type | Precision high-side current-sense amplifier |
| Number of Channels | 1 channel |
| Supply Voltage Range | 2.5 V to 40 V |
| Typical Supply Current | 12 µA |
| Reference Output | 1 V at 5 A load current |
| Input Bias Current | 4 nA |
| Boîtier | 8-MSOP |
| Package Width | 3.00 mm |
| Plage de température de fonctionnement | -40 °C to 85 °C |
| Type de montage | Surface mount |
| Amplifier Category | Instrumentation amplifier |
| Sensing Configuration | High-side |
| Supply Type | Single supply |
| Evaluation Board | EV8110DS-00A |
Guide de configuration des broches du MP8110DK-LF-P 3.00 mm
Configuration des broches du MP8110DK-LF-P (boîtier 3.00 mm). Ce composant analogique comporte des broches d'entrée, de sortie et d'alimentation. Consultez la fiche technique du fabricant pour les configurations des broches d'annulation d'offset, de compensation et d'activation. Idéal pour le conditionnement de signaux et les circuits amplificateurs.
Aucune donnée de brochage détaillée disponible pour MP8110DK-LF-P.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MP8110DK-LF-P convient pour 6 applications: Notebook Computer Battery Monitoring, Cell Phone Charge and Load Monitoring, Battery-Powered System Current Sensing, DC Input Power-Path Monitoring, Load-Current Reporting and Threshold Control, Power Management Feedback.
Notebook Computer Battery Monitoring
The MP8110DK-LF-P is suitable for monitoring battery current in notebook computers because its 2.5 V to 40 V operating range covers portable-system operating conditions while typical supply consumption is only 12 µA. The manufacturer specifically identifies notebook computers as an application for the MP8110 family. Place the amplifier in the high-side supply path with a current-sense resistor, then route its proportional output to the system controller. The 1 V output at 5 A load current shown for the EV8110DS-00A provides a useful evaluation reference, while the low supply demand helps preserve battery life during monitoring.
Recommandé
Cell Phone Charge and Load Monitoring
The MP8110DK-LF-P fits cell-phone load and battery-current monitoring because it combines a 2.5 V minimum supply with typical consumption of 12 µA. Monolithic Power Systems identifies cell phones as a target application for the MP8110. The amplifier can measure the small differential voltage across a high-side sense resistor and provide a proportional signal to a charger or system controller. Low quiescent demand is especially valuable in portable equipment, although the final shunt value and output operating range must be checked against the specific phone power architecture and current limits.
Recommandé
Battery-Powered System Current Sensing
MP8110DK-LF-P is appropriate for battery-powered systems that need DC current feedback without moving the load path below ground. Its high-side sensing arrangement monitors a conductor at an elevated common-mode voltage, while the device operates from 2.5 V to 40 V and typically draws 12 µA. The result is useful for load management, fault detection, and energy accounting. Designers should use a low-value sense resistor to limit dissipation, account for trace resistance, and verify that the resulting output signal remains within the amplifier’s operating limits.
Recommandé
DC Input Power-Path Monitoring
The MP8110DK-LF-P can monitor current in a DC input or power path when the measured conductor is above ground. Its 2.5 V to 40 V supply range accommodates many portable and industrial-style DC rails, and its typical 12 µA consumption limits the overhead added to a measurement path. Use the amplifier with a series sense resistor and feed the proportional output into an ADC or comparator for threshold detection. Because the supplied data does not state the full common-mode and output ranges, both must be confirmed from the manufacturer datasheet before deployment.
Recommandé
Load-Current Reporting and Threshold Control
MP8110DK-LF-P can provide a proportional current signal for load reporting, overload detection, or adaptive power control. Its one-channel precision high-side architecture measures a differential shunt voltage without interrupting the load’s ground reference. The EV8110DS-00A description establishes a useful reference point of 1 V output for 5 A load current, allowing engineers to understand the signal scale before adapting it to a particular shunt. A system threshold function then compares the amplified signal against a reference, subject to the output and common-mode limits specified in the official datasheet.
Recommandé
Power Management Feedback
The MP8110DK-LF-P can act as the sensing element in a closed-loop power-management system by translating load current into an analog voltage. Its single 2.5 V to 40 V supply operation and typical 12 µA consumption make it suitable for low-overhead monitoring, while high-side placement preserves a grounded load return. The resulting signal can support current-limit decisions, telemetry, or power-profile selection. For dependable measurements, keep the shunt and amplifier inputs close together, account for copper resistance, and verify that the chosen shunt produces an output the receiving controller can interpret correctly.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MP8110DK-LF-P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MP8110DK-LF |
|---|---|---|
| Package | 8-MSOP | 8-MSOP |
| Brand | Monolithic Power Systems | Monolithic Power Systems |
| Product Type | Precision high-side current-sense amplifier | Current-sense amplifier |
| Number of Channels | 1 channel | 1 channel |
| Supply Voltage Range | 2.5 V to 40 V | 2.5 V to 40 V |
| Typical Supply Current | 12 µA | 12 µA |
| Reference Output | 1 V at 5 A load current | 1 V at 5 A load current |
| Operating Temperature Range | -40 °C to 85 °C | -40 °C to 85 °C |
Principaux différenciateurs
- Wide single-supply operating range (vs MP8110DK-LF)
- Low typical supply consumption (vs MP8110DK-LF)
- High-side measurement without a grounded load path (vs MP8110DK-LF)
Notes de conception
Select the sense resistor so that the maximum monitored current produces a useful amplifier output without exceeding the device’s output-voltage or common-mode limits. The verified evaluation-board reference uses 1 V output for 5 A load current. Because the complete gain and output limits are not present in the supplied snippets, confirm them in the manufacturer datasheet rather than treating the evaluation-board ratio as a universal limit. Also calculate shunt dissipation at maximum current and include trace resistance in the effective current gain.
Route the two sense-resistor connections as a short, closely spaced differential pair and connect them directly to the amplifier input pins. Minimize copper area, switching nodes, and shared return-current paths around the shunt. The MP8110 uses high-side sensing, so keep the measured conductor away from sources of large transient currents and maintain a low-impedance, continuous ground reference. Good placement minimizes errors from parasitic resistance and induced noise before additional filtering is considered.
Do not infer the gain, common-mode range, offset, or output behavior from the abbreviated distributor snippets. The verified data establishes the 2.5 V to 40 V supply, typical 12 µA consumption, 1 V-at-5 A evaluation-board reference, and 8-MSOP format, but several critical performance parameters remain unavailable. Verify those specifications, the pin assignment, and the ordering suffix in the official Monolithic Power Systems datasheet before substituting MP8110DK-LF or releasing a PCB for production.
Informations de conformité
The supplied verified results do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is recorded as not applicable because this is a general-purpose current-sense amplifier and no automotive qualification is identified in the verified data.
