Hello Scott,
It is likely that the customer can simply use an op amp (I assume that's what you mean by "OP"), but first I would like some additional information:
1) What power supplies are available for the sensing circuitry?
2) Does the customer…
Hello Hari,
The maximum full-scale linear output ratio I calculated was a quick calculation of Vout_max/Vout_min = 5V/0.05V = 100. This is actually not techincally accurate, but just for comparison. Any voltage output amplifier will have a linear region…
Kai,
Using a current shunt monitor will be good for measuring large currents like 8A. When currents get smaller, like under 100mA, the errors can be significant. This is because large resistors are needed to measure small currents, and small resistors…
Hello Kwan,
I recommend modifying TIPD104 for your load current range. It should also work on the high side since the input common-mode range extends 100mV beyond the positive supply voltage. Please note that the output voltage swing, like all other…
Hello Anil,
Providing a 0.6V reference is a good idea. However, the one you suggest has just 1% initial accuracy. I assume you would like better performance.
Therefore I see a couple options. First, you could simply divide down your 3.3V supply and…
Hello Derek,
Can you please give us more information about your application? Also, is it possible to measure on the low side instead of the high side?
Please be aware that measuring 4 decades of load current is difficult enough itself and will likely…
Hello Paolo,
Detecting such a wide range of current is definitely challenging, especially given 1MHz BW. The options we typically see are either changing the gain of the device (e.g. using a PGA as in TIPD135) or switching in different sense resistors…
There are several error sources to consider when sensing current (or using amplifiers in general) such as CMR, PSR, noise, gain error, and voltage offset drift, but two device properties (input bias current (I B ) and input offset voltage (V OS ) ) are…
Hi Jagruti,
you normally use a pseudo ground in such a single supplied differential amplifier, because when both input voltages are identical the output should emit 0V. But it's impossible for the TLV316 to go all the way down to 0V. To omit this unwanted…
