Analog Devices Inc. MAX49918EVKIT# Evaluation Kit

Analog Devices Inc. MAX49918EVKIT# Evaluation Kit is a fully tested and assembled circuit that demonstrates the capabilities of the MAX49918 high-precision, wide measurement range, programmable gain, bidirectional current-sense amplifier that monitors two distinct current levels. An I²C interface programs the gain of the MAX49918 communications. The MAX49918 EV kit operates over an automotive temperature range of -40°C to +125°C.

The Analog Devices kit reserves a PCB footprint so that a MAX32625PICO board can be soldered on it. With the MAX32625PICO board, users can control the gain conveniently with the GUI software.

Features

Programmable gain options through I²C from 10V/V to 200V/V (8x steps)
Typical input offset voltage
- ±1μV for REF1 = REF2 = V_DD/2
- ±5μV for REF1 = V_DD and REF2 = GND at gain = 20V/V
±0.01% typical gain error

-5V to +70V input voltage range
-6V to +80V protective immunity
70kHz, -3dB bandwidth at gain = 20V/V
145dB DC CMRR
Rail-to-rail output
3mm x 3mm, TDFN-10 package
-40°C to +125°C temperature range

Applications

Monitoring distinct current levels
Using the same current-sense resistors across multiple system variants
Requires a non-typical gain value due to sense resistor constraints

H-bridge motor and solenoid current sensing
Battery current monitoring
High- and low-side precision current sensing

Required Equipment

0V to 70V DC power supply for VCM input
+3.3V, 100mA DC power supply
Electronic load capable of sinking 3A
1x 6½ digital multimeter
1x 8½ digital multimeter

Optional
- MAX32625PICO board
- Windows® 10 PC
- MAX49918EV kit GUI software

Analog Devices Inc. MAX49918EVKIT# Evaluation Kit

Features

Applications

Required Equipment

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