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Your cart is empty. Features:
1. Industry-leading noise performance through proprietary amplifier and filter design techniques
2. Integrated shield greatly reduces capacitive coupling from
current conductor to die due to high dV/dT signals,
and prevents offset drift in high-side, high voltage applications
3. Total output error improvement through gain and offset trim over temperature
4. Small package size, with easy mounting capability
5. Monolithic Hall IC for high reliability
6. Ultra-low power loss: 100μΩ internal conductor resistance
7. Galvanic isolation allows use in economic,
high-side current sensing in high voltage systems
8. 3.0 to 5.5 V, single supply operation
9. 120 KHz typical bandwidth
10. 3 us output rise time in response to step input current
Package included:
1* ACS758 ACS758LCB-050B-PFF-T 50A Linear Current Sensor Module
Mohamad farhat
2025-08-16 12:03:12
quick serice
James Murdock
2025-06-17 13:19:59
The holes are stupidly small!This is a nice chip from Allegro, but#1 issue: op-amp choice of this board is wrong. A 40mV per amp, a 50 amp peak (35A RMS if AC volts), the output at Vcc of 5v will be Vcc/2 + 2 = 4.5 volts. The 2272C op amp has a Vcc-1.5v or 5v - 1.5v = 3.5 volts, so the buffered output will clip the output. The unbuffered output ou1 should look good. (I didn't test this). The op amp should be a rail to rail *input* model, not just rail-rail output!#2 issue the chip is output limited If using it at 3.3v supply. The idle voltage of Vcc/2 = 1.65 v so with 40mV per amp sensitivity, the output range limits the current range to 1.65/0.04 = 41.25 volts (29 amps RMS with sinusoid AC).So, if you need 50A peak / 35A RMS, then skip the buffered output, power at 5v and use your own op amp on the unbuffered output IF you need to bias the output for a 3.3 volt A/D input.If you need 3.3v yet are OK being limited at 28 amps, use the unbuffered output without the opamp.That said, the unbuffered output might be fine, just don't load it with a low impedance.
Michael L.
2025-04-24 17:10:57
Can be safely attached when dealing with higher current demands. Solder points sized appropriately.
P. Meyer
2025-01-05 13:11:02
The holes are too small for anything bigger than 14 ga wire so keep them short.
Alexander Odyniec
2025-01-03 10:54:56
The biggest advantage of this module is its printed circuit board. It's easy to prototype with and it's cheap.Kudos to Mr James Murdock for catching the #1 issue with the buffer 2272C op amp -- it doesn't support rail-to-rail input.It may not be a problem though if AC current sensing is not required and DC current flows from IP- to IP+. Since the quiescent output is Vcc/2 at I=0, the output will stay in the lower half of the Vcc.However, I don't see the range limitation James described in his issue #2. The sensor's magnetic sensitivity is NOT 40 mV per Amp at 3.3 Vcc. It is 40 mV/A only at 5 Vcc. Its datasheet states:"Ratiometry. The device features a ratiometric output. Thismeans that the quiescent voltage output, VIOUTQ, and the magneticsensitivity, Sens, are proportional to the supply voltage, VCC."I just measured it. My 3.3 V supply runs a little high at 3.52 V and my Vcc/2 is 1.76 V. My measured magnetic sensitivity is 28.16 mV/A as it should be at 3.52 Vcc.Lastly, regarding the PCB holes being too small, the solid workaround is to solder your heavy gauge wire directly onto the J-leads of the sensor chip.
Craig Walz
2024-11-19 11:09:47
Very frustrating that I have #6 wires and no way to hook this. The holes are so close together - getting any lug on it is impossible. It baffles me how they think these will not be returned.
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