Hello,
Are you looking for something like a voltage to current converter, similar to what is shown in TIPD102 ?
If not, would a BJT transistor work for you?
Thank you,
Tim Claycomb
Hi Tamara,
Thank you for the reply. In the XTR111 datasheet the internal block diagram plus the external P channel FET resembles the circuit in the document TIPD102- High side V to I converter.
I have done the testing of the circuit in TIPD102 and posted…
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I will…
Part Number: TIPD107 Other Parts Discussed in Thread: XTR111 , TIPD102 , INA326 , INA826 , OPA188 , Dear Team,
The present circuit given by tamara works for 0 to 10V and 1uA to 1000uA, there is a change in the
The requirement is 0 to 1024uA current source with…
Hello,
The DAC8771 is designed for the specified current output ranges listed in the datasheet. It is not recommended change the input reference voltage. What current output range do you require?
For higher output currents you can look into a discrete…
Hi Vlad,
The NMOS circuit you reference is a very common current sink circuit. Could you source current instead of using a current sink?
Take a look at TIPD102. It's a design that uses a standard topology for a two-stage current source where the first…
Hi Rajesh,
Take a look at TIPD102 for a configurable current source. If you're only interested in a current sink you can use the first stage of the design on it's own.
Hi Zhongwen,
It should work if you use and LDO to provide VA from the loop power supply, but again this will be the loop powered configuration where the power supply is in series with the loop. You would not be able to have a separate loop driving just…
Hi Matt,
If you have pretty large input currents then the input bias current of the op amp and leakage current of the MUX is not as critical as very low current applications. Therefore most standard CMOS or JFET op amps will work fine for the transimpedance…
Hello,
I am not sure that the DAC161S997 would be the best solution for the application. Specifically your comment about the loop speed raises some concerns. The DAC161S997 utilizes a ΣΔ architecture, which has limited rate of change. Figure…
