Monolithic Power Systems Inc. EV8110DS-00A

Overview

EV8110DS-00A from Monolithic Power Systems is an evaluation board for the MP8110 precision high-side current-sense amplifier, designed to validate current monitoring in battery-powered systems. It supports input voltage from 2.5V to 40V, delivers two proportional output voltages (0–1V each), and features a 1.4V–40V input common-mode range independent of supply. The board includes fully assembled circuitry with R4 = 20 mΩ sense resistor, enabling 5A full-scale load current measurement with 1V output scaling.

For engineers reviewing the EV8110DS-00A datasheet, EV8110DS-00A pinout, EV8110DS-00A application, or EV8110DS-00A equivalent, this board provides verified test conditions for MP8110 integration-especially critical for portable PC, smart battery pack, and energy management system designs requiring accurate high-side sensing without ground-path disruption.

Technical Context

The EV8110DS-00A implements the MP8110 IC in a fixed-gain, dual-output configuration: VOUT1 and VOUT2 both scale linearly with load current (0–5 A), delivering 0–1 V per channel. The board uses JP1 to enable/disable the MP8110 via SHDN pin and JP2 to select VCC sourcing (VIN or external).

Its schematic integrates R4 (20 mΩ, 2512) as the current-sense element, R1/R2 (2 kΩ) forming a matched divider, and R3 (20 kΩ) setting gain for VOUT1. C5 (100 nF) stabilizes VCC, while C3 (100 pF) filters VOUT2-ensuring stable operation across 2.5V–40V supply and deep-discharge battery conditions (down to 1.4V common-mode).

Key Specifications

Availability

EV8110DS-00A is available at Aetrix Electronics and suitable for portable PCs, smart battery packs, and energy management systems requiring stable component supply during design validation and pre-production testing.

Supply support for EV8110DS-00A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC/DC conversion, LED drivers, and precision analog signal conditioning.

The EV8110DS-00A belongs to MPS's evaluation platform family for current-sense amplifiers, developed specifically to accelerate design-in of high-accuracy, high-voltage-range sensing solutions in battery-critical portable and energy-efficient applications.

FAQ

What is the function of JP1 on the EV8110DS-00A?

JP1 connects the SHDN (shutdown) pin of the MP8110 to VCC, enabling the device. Removing JP1 pulls SHDN low, disabling the amplifier and reducing quiescent current to near-zero. This allows controlled power cycling during testing without disconnecting VIN.

How is the 1V output calibrated to 5A load current?

The calibration derives from R4 = 20 mΩ and internal gain: VOUT = ILOAD × R4 × (R3 / R1) = ILOAD × 0.02 Ω × (20 kΩ / 2 kΩ) = ILOAD × 0.2 V/A. Thus, 5A yields exactly 1V. This fixed-ratio scaling is verified by the board's Bill of Materials and schematic.

Can VOUT1 and VOUT2 be used simultaneously?

Yes - VOUT1 appears across R3 (20 kΩ), and VOUT2 appears across C1 (not populated, but designated for optional filtering). Both outputs track the same load current with identical scaling (0–1V for 0–5A), supporting redundancy verification or differential noise rejection in noisy environments.

What is the purpose of JP2?

JP2 selects the VCC source: when installed, VCC = VIN; when removed, VCC must be supplied externally and must be ≥ VIN. This ensures proper biasing of the MP8110's internal circuitry when operating with VIN below its minimum operating voltage or when isolating supply domains.

Is the EV8110DS-00A RoHS-compliant?

Yes - all components listed in the Bill of Materials (including TDK capacitors, Panasonic resistors, and the MP8110 IC) are RoHS-compliant per MPS documentation and distributor records (Digi-Key, Mouser). The PCB uses lead-free solder and compliant substrate materials.

Does the board support bidirectional current sensing?

No - the EV8110DS-00A implements unidirectional high-side sensing only, as confirmed by the MP8110's datasheet and schematic. The MP8110 lacks bipolar input capability and does not support reverse-current detection or zero-center output scaling.