Part Number: LM234 Hello,
I'm using current source LM234 chip to output constant 1mA current, the load vary from 1K to 30K. The V+ of LM234 is provide by +32V from DCDC.
The output of LM234 can only drive the load below 15K, when the load above 15K…
Part Number: LM134 Hello,
We have a customer looking for lead finish for this device (LM134H) - the datasheet simply says "Call TI".
Could someone please let us know.
Thanks,
Part Number: LM134 Is there any literature/more information on C1 and R1 value calculation in the LM134 datasheet, Figure 20: Higher Current Output configuration? I'm planning on using this current source to output 15mA.
Here's the datasheet link…
Part Number: LM334 Other Parts Discussed in Thread: LM134 Perhaps that's a stupid question: in the datasheet the zero drift operation (meaning the current will not be current dependent) is mentioned for LM134. Does this configuration apply to LM334 as…
Hi Martin
LM134 /REF200 will be accurate soultion compare to ATL431 however they are costly solutions. Let me know your error budget for current ref . We can discuss the solution .
Regards
Trailokya
Other Parts Discussed in Thread: LM134 Hi,
I want to switch the output current of LM134 between 0 to 9mA with pulse duration of 2ms by switching the input voltage between 0V to 5V. Is it possible to do it using LM134 to drive a laser diode in pulsed mode…
Hi - I have set up a very basic constant current source circuit. When I read Voltage across V+ & V- , I get 5V. And across V+ & the R-LM134 junction, I get 5V.
When I try to measure Vr, I get 0. I am not sure if I am missing a concept or something…
Other Parts Discussed in Thread: LM134 Hi,
In the National Semiconductor LM134 datasheet (TI Literature Number: SNVS746C, or National Semiconductor DS005697), page 11 (12 for SNVS746C) In Typical Applications, one of them is "Generating Negative Output…
Other Parts Discussed in Thread: LM134 I'm using the zero tempco circuit as per the LM134 data sheet, with the 1N457 diode providing the tempco compensation. Could anybody recommend a good way of trimming this circuit? If I put in a pot as per the "Alternate…