DeadMouse‭

I'm designing a high side current source that can be controlled with a Digital-to-analog and can source up to 100mA with voltage supply up to 36V. By high side I mean one side of load will be alwa...

1 answer  ·  posted 3y ago by DeadMouse‭  ·  last activity 2y ago by Olin Lathrop‭

I'm designing a board that contains a cortex-M4 mcu working at 120MHz, and an ethernet bus with a wiznet chip that communicates with SPI. The ethernet chip gives me a phy output that goes directly...

2 answers  ·  posted 1y ago by DeadMouse‭  ·  edited 1y ago by Lorenzo Donati‭

I have a non-invasive current sense transformer (SCT-013-030) which according to its datasheet it is voltage output type. I want to harvest energy and supply a wireless sensor that consumes 5-6 uA...

1 answer  ·  posted 2y ago by DeadMouse‭  ·  last activity 2y ago by Andy aka‭

I'm designing a robust 1-wire output for an IoT board. The interface should be able to withstand high voltage. Mainly the same voltage level as the board power supply. That's 12V to 36V DC. The p...

1 answer  ·  posted 9mo ago by DeadMouse‭  ·  last activity 9mo ago by Olin Lathrop‭

I have a photodiode and I want to connect it to an ADC to read the ambient light. For the context, non linearity is not an issue as I'm interested in knowing the amount of light in 3-4 levels. The...

1 answer  ·  posted 25d ago by DeadMouse‭  ·  last activity 17h ago by Olin Lathrop‭

I have a design of a power line communication using the following IC. https://www.yamar.com/datasheet/DS-SIG60.pdf My design is the same as the example circuit in the datasheet of the chip. Th...

2 answers  ·  posted 2y ago by DeadMouse‭  ·  edited 1y ago by Lorenzo Donati‭

I have an mcu pin and I want to sense a voltage up to 24V to 36V. I want to connect some outputs on the board I'm designing and I don't know whether those outputs will provide a voltage or will be...

1 answer  ·  posted 1y ago by DeadMouse‭  ·  edited 1y ago by Lorenzo Donati‭

I'm looking for a power supply to power up the VCORE of an mcu. The chip is an STM32 microcontroller (LQFP) and the maximum current it will draw is no more than 150mA. The input will be 3V-5V max...

3 answers  ·  posted 6mo ago by DeadMouse‭  ·  last activity 4mo ago by TonyStewart‭

I want to operate a BLE chip at very close to its absolute maximum voltage. The chip is nRF52810 This is intended for a battery powered device and I want to use a 3.6V non-rechargable battery dir...

2 answers  ·  posted 5mo ago by DeadMouse‭  ·  last activity 5mo ago by Lundin‭

I have a PIC18 and I'm trying to detect whether it is connected on the CAN bus or not. When the PIC is not connected on the bus, and I load the transmit buffers, after setting the TXREQ flag. The ...

1 answer  ·  posted 5mo ago by DeadMouse‭  ·  last activity 5mo ago by Olin Lathrop‭

I want to sense 3 different states in the same mcu pin (GND, Hi-Z and PWR). PWR is typical +24V but I would like to have a wide margin from +17V to +40V just to be safe. The values can change but ...

1 answer  ·  posted 1y ago by DeadMouse‭  ·  last activity 1y ago by Olin Lathrop‭

I have a hat board that has some high power solid state switches (mosfets). The hat is controlled by the main board. The hat and the main board are connected via pin headers, like an arduino. Th...

1 answer  ·  posted 19d ago by DeadMouse‭  ·  edited 18d ago by DeadMouse‭