Driving a Phased Array of ultrasound transducers (square wave amplification)...
Hello, I am looking to amplify a square wave outputted from the GPIOs of a Beaglebone Black (a 40 KHz 3.3 V square wave) to 20 Vpp at the same frequency in order to drive an array of ultrasound...
View ArticleMCP73837 - Cells in parallel (engenharia1)
Hi Guys I'm searching through internet and Microchip forums about the possibility of using MCP73837 with two parallel cells. Has anyone tried this? The reason is the limitations of physical space on...
View ArticleMCP39F501 and CT (alamakota)
Hello,can MCP39F501 working with current transformer (CT) instead of a shunt resistor? greetingsm....
View ArticleA /CS delay puzzle involving selecting MCP23S17's with a decoder chip...
I have a puzzle for people who enjoy this sort of puzzle! The situation: I have a setup whereby I have a number of interface modules/cards that can plug into a single central Arduino micro-controller....
View ArticleSaturation values of MCP6S21/2/6/8 in simulation with Proteus. (kazuyanakamura)
Hello,I have a simulation with the MCP6S21 in Proteus (I am facing the following problem also with MCP6S22/6/8).The input signal is a sin wave with offset of 1.65V and amplitude of also 1.65V,such that...
View ArticleMCP73831 not working properly - why? (JacobAbram)
Greetings, I am currently developing a Li-Ion powered board using MCP73831 IC to get the 5 V from my laptop to both recharge a 2000mAh Li-Ion battery and also to power the rest of the circuit. The...
View ArticleIs there any possibility for fixing Vref in ADC by software (chandrasekaran v)
hi while interfacing ADC; instead of connecting Vref (AN0=0-5v,Vref=2.6) analog pin for defining the voltage reference by hardware;can we define it it by software...
View ArticleMCP73871 Low Voltage indicator (adinellu)
Hi,I am using the MCP73871 demo board to make a solar panel/USB charger for a 3.6,7800mAh battery (Li-Ion). I did a test with the battery and a load of 4.2 ohm but with 0V on Vdd. The MCP didn't stop...
View ArticleMCP73871 all Leds are ON (adinellu)
Hello, I am testing the MCP73871 as the demo board. When I supply it all LEDs are ON ( PG, STAT1, STAT2) which would mean a temperature or a timer fault but I disabled the timer and I don't have a...
View ArticleMCP4725 addressing (fsonnichsen)
I am trying to interface an MCP4725 via the linux I2C driver. The datasheet figure 6.2 shows the address as 1100 A2 A1 A0 rw.The manual also states that A2=A1=0 for the non-custom version and I have A0...
View Articlemcp39f511 (Bouwser)
Hello, I have purchased the MCP39F511 dev board for power metering. I was wondering if this design could be modified to measure current on the high side. Any thoughts or ideas? thanks,Brent..
View ArticleMCP3911 spi write fail (valamilamasag)
Hi! I can't write any more to the MCP3911 IC after one successful write. The IC itself works, see attachment "meas1.gif". I reset the IC then write the required configuration into it. The configuration...
View ArticleWhat about bank switching? (pgibbons)
Some people say PICs are bad because they use bank switching. really? what does that imply?..
View ArticleMCP4728 I2C Address Wrong? (jking)
Am unsuccessful at writing to an MCP4728 in a new design using known good code from a previous design. Four other I2C devices work fine. Ran a utility to scan for I2C devices on the bus. It reported...
View ArticleMCP39F511 Power Monitor Demonstration Board Communication Issues with Windows...
I recently purchased the MCP39F511 Power Monitor Demo Board. The Power Monitor Utility, V1.0.0 is sluggish on my Windows 7 64-bit PC, but it works. But, I have some communication issues if I hookup a...
View ArticleMCP2200 Driver VID PID (ixnay)
Hi all, I have a problem regarding installing the driver of MCP2200. I was debugging with my product with default VID/PID values in MCP2200 (the PC creates a virtual COM port). Then, I got the...
View ArticleLevel-shift signal voltage using DAC and op-amp (vksingh)
I have an ADC that needs input voltage to be in the range 568mV to 1592mV. It is actually an differential input ADC but can be used in single-ended mode if INPUT- pin is set to 1.08V and INPUT+ pin is...
View ArticleMCP39F511 monitoring 'chopped' AC (SGHughes42)
Does anyone know if the MCP39F511 will still work correctly when fed with an AC signal which is phase-angle controlled? We have a product at the moment which uses a load of discrete true RMS convertors...
View ArticleCan I switch between digital output and analog input on the same pin? (MidiMan)
Hi guys - I can't find an answer to this in the spec, so I'm hoping someone here will know. I've built a breadboard system of several PIC12F615 (one master, several slaves) micros communicating over a...
View ArticleMCP1662 problem with current above 100 mA (Luk3)
Hello! I have MCP1662 boost step-up converter in SOT-23 package. Typical application from datasheet. 4,7uH coil, 10uF ceramics input/output capacitors and white led string 170mA@9V (3 diodes in serial,...
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