| General > General Technical Chat |
| OpenAI ChatGPT for electronics design |
| (1/9) > >> |
| qat:
I was messing around with the openAI bot and asked it some random question regarding electronics. It seems to have gotten a lot of attention recently, and I wanted to find out if my job is at risk! ;D Maybe it's already a thing, but I've found it to provide quite useful answers to some questions, it is also able to design basic circuits using 555 timers etc, and calculate component values! Its definitely worth experimenting with it! [Q:] Give thee examples of low-noise LDOs available at Digi-Key. They should be able to handle input voltages ranging from 1 to 10 volts, and supply more than 160mA of current. External components needed should be as low as possible. [A:] Here are three examples of low-noise low-dropout (LDO) regulators that are available at Digi-Key and are capable of handling input voltages ranging from 1V to 10V and supplying more than 160mA of current: 1. Linear Technology LT3080: This LDO regulator has a low noise floor of just 6.5 µV RMS and is capable of supplying up to 1A of output current. It requires a minimum of just two external components, making it a compact and simple solution. 2. Texas Instruments TPS7A4700: This LDO regulator has a low noise floor of just 10 µV RMS and is capable of supplying up to 200mA of output current. It requires a minimum of just two external components, making it a compact and simple solution. 3. Analog Devices ADP150: This LDO regulator has a low noise floor of just 8 µV RMS and is capable of supplying up to 200mA of output current. It requires a minimum of just two external components, making it a compact and simple solution. It is worth noting that these are just a few examples of the many low-noise LDO regulators that are available at Digi-Key, and the specific LDO that is best for your application will depend on your specific requirements and constraints. It is always a good idea to carefully assess your needs and consult with a power supply design expert before making a decision. [Q:] Generate an 12-layer PCB stackup for a Zynq based system that will be used in avionics. [A:] Here is an example of a 12-layer PCB stackup for a Zynq-based system that could be used in avionics applications: Signal layer 1 Ground plane Power plane Signal layer 2 Ground plane Power plane Signal layer 3 Ground plane Power plane Signal layer 4 Ground plane Power plane This stackup allows for the use of four signal layers, which can be useful for routing high-speed signals and minimizing cross-talk between different signals. The power and ground planes provide a stable power and ground reference for the signals on the signal layers, which can help to improve the performance of the system. It is worth noting that this is just one possible example of a PCB stackup for a Zynq-based system, and the specific stackup that is best for your application will depend on your specific requirements and constraints. It is always a good idea to consult with a PCB design expert and carefully assess your needs before deciding on a final stackup. [Q:] Design a 2.35V power-supply using a Buck-Boost regulator from Ti. It should be capable of handling up to 1A of output power and 5V input voltage. Low output noise is not critical, but capability to handle high temperatures is. [A:] One option for designing a 2.35V power supply using a buck-boost regulator from Texas Instruments (TI) is to use the TI TPS63802. This is a high-temperature buck-boost regulator that is capable of handling up to 1A of output current and input voltages ranging from 2.7V to 5.5V. It also has a built-in power switch and can operate at switching frequencies up to 2.4 MHz. To design the power supply, you will need to connect the input voltage source to the VIN pin of the TPS63802, and connect the output load to the VOUT pin. You will also need to set the desired output voltage using an external resistor divider, as described in the TPS63802 datasheet. In addition to the TPS63802, you will also need to include some passive components in your power supply design, such as bypass capacitors and an output filter inductor. The specific values of these components will depend on the specific requirements of your application, and can be chosen using the guidelines provided in the TPS63802 datasheet. It is worth noting that this is just one possible example of how to design a 2.35V power supply using a buck-boost regulator, and the specific design that is best for your application will depend on your specific requirements and constraints. It is always a good idea to carefully assess your needs and consult with a power supply design expert before finalizing your design. Try it out! https://chat.openai.com/chat Update, It is insane what it is able to do, ask for example: Write a VHDL program to interface with the Analog Devices AD9371 IC... |
| ataradov:
LOL. It got all the characteristics for all the devices wrong. It just knows from context that some number must follow and inserts a random number. It is amazing that it can generate text that coherent, but I doubt it would be useful for anything practical. |
| tom66:
--- Quote from: ataradov on December 16, 2022, 11:30:06 pm ---LOL. It got all the characteristics for all the devices wrong. It just knows from context that some number must follow and inserts a random number. It is amazing that it can generate text that coherent, but I doubt it would be useful for anything practical. --- End quote --- This is the problem. It's *very good* at bullshitting, and unfortunately it's very hard to tell when it's wrong unless you know about the subject in good detail. For instance, you can ask it to compare a Zynq to an iPhone and, at least in my case, it said one advantage of the Zynq was it had SPI whereas the iPhone had a camera, and a camera is not as good as having serial peripheral interface. But, it is pretty cool to play with. And it has some very interesting implications for the future of AI. |
| MK14:
Could it be used to replace all Electronics Engineers? No, not at the moment. But its responses are amazing for an AI's attempt to mimic a real electronics engineer. In the future, this could become worryingly good. On the one hand, it could hinder peoples employment, but on the other, could help create lots of inventions, products and make for some interesting talking appliances/companions. [My test question]... If I had some NE555 timers, are they made with bjt's or mosfets?, what if it was a CMOS version?, also where can I buy them?, how much are they?, how much do they weigh?, can I design a CPU with them, write a verilog example 555 timer. [End of my test question]...Its response follows: --- Quote ---The NE555 timer is a general-purpose timer integrated circuit (IC) that can be used in a variety of timing applications. It is typically made with bipolar junction transistors (BJTs) or complementary metal-oxide-semiconductor (CMOS) technology. The NE555 timer is available in both BJT and CMOS versions. The BJT version is typically used in applications that require higher power handling, while the CMOS version is used in applications that require lower power consumption. You can purchase NE555 timers from electronics retailers or online marketplaces. Prices may vary depending on the supplier and the quantity you purchase. A single NE555 timer typically weighs a few grams. It is not practical to design a central processing unit (CPU) using NE555 timers, as they are not capable of performing the complex operations required by a CPU. Instead, CPUs are typically designed using more advanced integrated circuits, such as microcontrollers or microprocessors. If you want to use an NE555 timer in a circuit, you can use a hardware description language (HDL) such as Verilog to describe the behavior of the timer. Here is a simple example of a Verilog description of an NE555 timer: module NE555_timer (input clk, reset, trigger, output q); reg [31:0] counter; always @(posedge clk or posedge reset) begin if (reset) counter <= 0; else if (trigger) counter <= 32'd500_000; // set timer period end assign q = (counter == 0); endmodule This example shows the basic structure of an NE555 timer in Verilog. The timer has four inputs (clk, reset, trigger, and output) and one output (q). The counter register is used to count the number of clock cycles, and the q output is set to 1 when the counter reaches zero. The timer period can be set by writing to the counter register when the trigger input is asserted. --- End quote --- [Then I asked (mistakenly on my part, as it HAD actually supplied the answer, in its response):] Wait a minute. You seem to have forgotten to tell me how much they weigh. [End of my question] --- Quote ---I apologize for the oversight. A single NE555 timer typically weighs a few grams. The exact weight may vary slightly depending on the specific version of the NE555 timer and the package it is packaged in. NE555 timers are usually packaged in a small, through-hole plastic package, which makes them lightweight and easy to use in a wide variety of applications. --- End quote --- [I then ask] I want an op-amp circuit, which is an inverting amplifier, with a gain of -20, capacitively coupled on both the input and output sides, so as to ignore any DC bias. Please illustrate the schematic, by producing it in Verilog. [End of question] --- Quote ---Here is a Verilog description of an inverting amplifier circuit with a gain of -20 that is capacitively coupled on both the input and output sides: module inverting_amplifier (input in, output out); parameter GAIN = -20; // Capacitive coupling on input side wire in_coupled; capacitor cap1 (in, in_coupled, 1nF); // Inverting amplifier opamp u1 (in_coupled, out, GAIN); // Capacitive coupling on output side wire out_coupled; capacitor cap2 (out, out_coupled, 1nF); assign out = out_coupled; endmodule This circuit uses an operational amplifier (op-amp) to implement the inverting amplifier, with a gain of -20. The input signal is capacitively coupled to the op-amp through a 1nF capacitor (cap1), which blocks any DC bias from the input signal. The output of the op-amp is then capacitively coupled back to the output of the circuit through another 1nF capacitor (cap2), which also blocks any DC bias from the output signal. I hope this helps! Let me know if you have any questions. --- End quote --- [My final question, here] Now, show me that schematic, drawn as an ASCII/text art diagram, at a high level only. Also, redesign it using small signal transistors, along with the recommended part numbers. [End of final question] --- Quote ---Here is a high-level ASCII/text art diagram of the inverting amplifier circuit with a gain of -20 that is capacitively coupled on both the input and output sides: +--------+ | | in ---|1nF | | | +--------+ | v +--------+ | | | | | opamp | | | | | +--------+ | v +--------+ | | out ---|1nF | | | +--------+ To redesign this circuit using small signal transistors, you can use a pair of NPN transistors connected in a common emitter configuration. Here is a Verilog description of the redesigned circuit: module inverting_amplifier (input in, output out); parameter GAIN = -20; // Capacitive coupling on input side wire in_coupled; capacitor cap1 (in, in_coupled, 1nF); // Inverting amplifier using NPN transistors npn_transistor q1 (in_coupled, out, 2N3904); npn_transistor q2 (out, out, 2N3904); // Capacitive coupling on output side wire out_coupled; capacitor cap2 (out, out_coupled, 1nF); assign out = out_coupled; endmodule In this redesign, the op-amp has been replaced by a pair of NPN transistors (q1 and q2), connected in a common emitter configuration. The gain of the amplifier can be controlled by adjusting the values of the resistors connected to the transistors. The 2N3904 transistor is a commonly-used small signal transistor that can be used in this circuit. I hope this helps! Let me know if you have any questions. --- End quote --- |
| MK14:
I used the following question, to attempt to see, how knowledgeable and helpful, it can be, as regards the use of FPGAs. I've got a problem with my Verilog, FPGA files. There seems to be a metastabilty between my two different clock domains, and I don't want to use a FIFO to fix it. Also, I want to implement a latch, but the design rules prohibit it, and say I must use a register, because the latch is unclocked. Also, I need to add a 32 bit barrel shifter, which connects to a big multiplier. Will that need any more DSP slices? Also, any tips on how I can optimize the maximum clock rate of the overall design, ideally without using anymore block ram, which is nearly exhausted. --- Quote --- Metastability can occur when there is a race condition between two clock domains, and it can be difficult to resolve without using some kind of synchronization element such as a FIFO or a flip-flop. However, there are some techniques that you can use to minimize the risk of metastability, such as ensuring that the clock skew between the two domains is minimized, and using a clock-crossing technique such as clock-domain crossing (CDC) cells or PLLs to synchronize the two clocks. As for the latch, it is generally not recommended to use latches in digital design because they are unclocked and can cause unpredictable behavior. Instead, you should use a flip-flop, which is a clocked version of a latch and will behave more predictably. As for the barrel shifter, it's possible that it may require additional DSP slices depending on the specific implementation and the capabilities of your FPGA. In general, it's a good idea to try to minimize the use of DSP slices because they are often a limited resource on an FPGA, but if you need to use them to implement certain functions, it may be necessary. To optimize the maximum clock rate of your design, you can try a few different techniques. One option is to try to reduce the overall complexity of your design, which can help to reduce the total number of logic elements and improve performance. You can also try to optimize your placement and routing to reduce the length of critical paths, which can help to improve the maximum clock rate. Finally, you can try to reduce the number of I/O delays by carefully selecting the I/O standards and locations for your pins. --- End quote --- |
| Navigation |
| Message Index |
| Next page |