USB3300 hardware questions (chris.lamb)
Hi all, I am designing my first USB circuit using a USB3300 connected to a Xilinx Zynq. I am intending to connect this to a USB2513B hub to provide 3 ports to my design. I do not need the OTG...
View ArticleMCP3464 ADC output issues (AndyH)
I'm working on a product with an external MCP3464 ADC. I can communicate with the device via SPI, and am able to read and write registers with no problems. However, I just can't get the device to run...
View ArticleInput capacity of the HV507 (Katsu)
Hello.Is the data present in the Vpp input capacity of the HV507?(I apologize if the forum categories are different.)..
View ArticleRC sensing network is getting too hoot when started-up with MCP39F511 design...
Hello, I have designed a product for power metering based on the evaluation board MCP39F511. In fact the desing is exactly the same for the input ac voltage an the analog part sensing of the device. I...
View ArticleSuitable regulator for battery powered system (Human)
Hey guys I am using 5 lithium ion cells in parallel which gives me 4.2V and 10Ah. I want to supply 3.3V to my components hence using a regulator. I think LDO would be sufficient considering the fact...
View ArticleMIC920 buffer for low uV range? - Spice model? (BEsmart)
Hi all,I'd like to use the MIC920 as voltage buffer for an RF-signal about 40MHz for the low uV range.Would it be suitable?Or even better, could anyone provide a SPICE model for simulation, as...
View ArticleMCP3424 sigma/delta ADC - modulator/sampling frequency wanted (adc_power)
Hello, I have successfully utilized the MCP3424 sigma/delta ADC.Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/22088b.pdf In order to calculate the average current, that is drawn during the...
View ArticleMCP2200 DLL issues in my VB .NET project (Spacerowa)
Hi there,I have created a Visual Studio VB .net application for using with my own MCP2200 based usb-uart hardware project.Using the Microchip MCP2200 Configuration utility I have configured the MCP2200...
View ArticleA little help with MCP73831's STAT pin! (bobkeed)
I'm using MCP73831 to charge my Li-ion battery on a wearable device I'm currently working on. I wanted to detect the charging status with my processor so I connected the MCP73831's STAT pin directly to...
View ArticleMIC5504-3.3YM5 output voltage out of spec (ryagi)
Hi everyone, I'm using an MIC5504-3.3YM5 to generate a 3.3V regulated output from a 5.5V supply. However when measuring its output, the IC is generating an output of 4.4V. Any suggestions would be...
View ArticleInitialize multiple MCP4728 I2C slaves with the same address (analog arsonist)
Someone posted this question in like 2013 with same subject line but I didn't see a clear answer. If I have multiple MCP4728 devices on a shared I2C bus, each with the same address, can I program the...
View ArticleMCP19111 Frequency Response measurement. (Alan Liu)
Hi Experts, I have a MCP19111 Battery Charger Evaluation Board, I want to verify the code setting of phase/gain margin. But where should I connect the Frequency Response Analyzer to the EVM Board?..
View ArticleMCP47FEB02 dual 8 bit DAC, 1 Million EEPROM endurance cycles (marjian)
Hi.Can someone explain me when MCP47FEB02 save internal EEPROM? 1. Every time when I sent new value via I2C to MCP47?2. Only during Power-on Reset Operation?...
View ArticleMCP73830 and battery with PCM can't recharge after lock battery (barbar)
I use the MCP73830LT connect to 1 LiPo battery which has a standard PCM (protective circuit ). It is work O.K. all time when the battery is in its limits (4.2V-3.0V). The charger do its job and with...
View ArticlePowering MCP23S17 through CS port (asm_uchip)
Hi all, I am using 2 MCP23S17 as part of a design. I found that if a voltage is suppplied to CS port, then this voltage will appear at the VDD pin (say 3.3V at CS, then VDD = 2.5V with the VDD not...
View ArticleMcp4725 buffering output current (vettett15)
Hello, I'm working on a design to "digitize" an old analog vehicle sensor and running into some issues that I believe are tied to trying to drive the SAR ADC in the ECU. The OEM sensor (see figure...
View ArticleMIC5021 PWM operation (KathyL)
I am confused about how to use the MIC5021 with PWM control. I have the input pin of the MIC5021 connected to a PWM I/O port on my microcontroller but operating at 20khz. The data sheet for the MIC5021...
View ArticleMCP3021 output 1/4 of what it should be? (David Ashman Zone 7 Engineering)
I'm using an MCP3021 with a floating point BlackFin BF706 processor. After translating the two received I2C sample bytes back to a voltage, I'm getting 1/4 of the DC voltage I measure at AIN. Has...
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