Hi Tim,
here comes the supply voltage generation:
The +5V generation from the car battery can be used for the two sensors together. Spend each of them the OPA340 circuit ("U3") on the left side of HCPL-2211 including one HCPL-2211. Or by other words…
Other Parts Discussed in Thread: OPA340 , OPA347 I'm looking to use an OPA340 or OPA347 as a simple comparator to monitor the voltage of the BR2032 battery. When the opamp is unpowered, if there any possibility of significant (nA) leakage from IN+ to…
Darren,
A low frequency input current noise spectral density may be calculated using a following formula: Inoise=(2*q*IB)^0.5 so for IB=1pA, Inoise=(2*1.6e-19*1e-12)^.5 = 0.6fA/rt-Hz. However, with the increase of frequency, common-mode input capacitance…
Other Parts Discussed in Thread: OPA340 , TINA-TI I am following the advice on Application Report SLOA058 Figure 7 to use an OPA340 as a summation circuit.
I am using a Vcc of 5V, R1A = R1B = R2 = 1kOhm (for gain of 1) so R3 = 330Ohms (There is no R1C…
Hi, Marek;
Long time no see! I hope you are doing well.
Will the OPA340 model on the website be updated to the new version? I hope so since I use it frequently!
Regards, Neil P. Albaugh ex-Burr-Brown
Part Number: LMV7272 Other Parts Discussed in Thread: OPA340 Hello,
What are the rail clamping diodes rated for on the LMV7272 comparator? I need to size a resistor for current limiting to protect the IC when power is off.
Thanks!
Other Parts Discussed in Thread: OPA340 Hi,
Im working on an opamp based design, using OPA 340 SOT-23-5
The power supply is single ended Vcc=3.9V
The opamp is used for turning ON a P channel mosfet....
The problem is that the circuit is nearly…
Well Olaf, I was interested in that parameter stepping and was able to get that to work in TINA V9 for the OPA818 - here I modified that OPA340 example to create figure 1 in the datasheet, V9 file below, the inverting sweep in Figure 2 does not report…
Tom,
What resolution are you looking to settle to inside this time? A great tool to help you design the front end here is the Analog Engineers Calculator tool, specifically the "ADC SAR Drive" section. This section will help you define needed parameters…
