Integrated Current Sensor

Development Kit MLX91210

www.melexis.com/MLX91210

Development Kit 91210-SO08

Key features

Sensor:

■ Isolated current measurement demo factory calibrated for 50A

■ Qualied to voltage isolaon 2.1-2.5kV in ref to UL and IEC norms

■ Fully dierenal and stray eld immune (insensive to external eld)

PCB:

■ PCB design adapted to high current measurements

■ Ground Layer and Decoupling capacitors for high EMC performances

■ Extra room for output lter implementaon

The MLX91210 development kit provides all the needed components to evaluate

the performances and the funconalies of MLX91210 integrated current sensor.

The kit includes:

■ 1 demo PCB with 1 MLX91210 current sensor calibrated for 40mV/A

■ 3 extra MLX91210 current sensors calibrated for 40mV/A

To avoid sensor overheang, max connuous RMS current < 30A. Detailed layout informaon on request (shu@melexis.com)

PCB top view

Sensor pin-out and connecons

PCB components descripons:

Part Descripon Value

C1 Supply capacitor, EMI , ESD 100nF

C2 Decoupling capacitor, EMI, ESD 10nF

C3, C4 Decoupling capacitor EMI, ESD 1nF

R1, R3 Extra Resistors for CRC lter 0 Ω

R2 Must-to-Gnd resistor 0 Ω

R4, C5 Extra RC lter TBD

Pins designaon:

VDD Vout Must Vss Ip+ Ip-

Supply Analog Digital Ground Analog Analog

Supply

Voltage

(+5V)

Current Sensor

Output (+/-2V)

Test and

Factory

Calibraon

Supply

Voltage

Current

Input

Current

Output

PCB schemac

Integrated Current Sensor

Development Kit MLX91210

www.melexis.com/MLX91210

Sensor Performances

Disclaimer:

Devices sold by Melexis are covered by the warranty and patent indemnicaon provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by descripon regarding the

informaon set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specicaons and prices at any me and without noce. Therefore,

prior to designing this product into a system, it is necessary to check with Melexis for current informaon. This product is intended for use in normal commercial applicaons. Applicaons requiring extended

temperature range, unusual environmental requirements, or high reliability applicaons, such as military, medical life-support or life-sustaining equipment are specically not recommended without addional

processing by Melexis for each applicaon. The informaon furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages,

including but not limited to personal injury, property damage, loss of prots, loss of use, interrupt of business or indirect, special incidental or consequenal damages, of any kind, in connecon with or arising out

of the furnishing, performance or use of the technical data herein. No obligaon or liability to recipient or any third party shall arise or ow out of Melexis’ rendering of technical or other services. © 2010

■ Very good non-linearity < 1%F.S.

PCB Layout

■ Typical response me 5us

■ Addional RC lter:

Pin-out for MLX91210-SOIC08 (R1, R2,

R3, R4, C3,C4, no represented)

■ On-chip Sensivity Dri and Oset Dri compensaon over lifeme

and temperature

 Sensivity Dri : +/-1%

 Oset Dri : +/-0.12A

Output Filter Bandwidth [kHz] Noise [Arms]

R4 C5

n.a. n.a. 100 0.15

100 150 10 0.05

1000 150 1 0.02