ADC configuration in PIC16f887 (Saqib)
Hi all,I m simply getting data from the Channel 0 and copy it to Port B as you can see in the code pls, this program is running well in Proteus v7, but not good with hardware. In hardware this looks...
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View ArticlePossible Error in ADM00398 Schematic and BOM? (Constantin)
Ladies and Gentlemen, Looking over the schematic for the ADM00398, I wonder if the MCP3911 clock crystal has the wrong capacitors associated with it. The clock crystal is a Abracon 10MHz unit with a...
View ArticleMCP2200 No Parity or Stopbit (Richi)
Hi!I'm using the MCP2200 and trying to send commands to instruments using only Rx/Tx and ground.But all I get is the startbit and DATA, no Parity or Stopbit. I'm using Microchip's USB driver and I have...
View ArticleMicrophone preamplifier with MCP6L71 opamp (aetosa)
I 'm thinking of using MCP6L71 as a condenser microphone preamplifier.It has:1. The non-inverting and inverting inputs are high impedance CMOS inputs . (is this OK??) 2. input Noise Voltage Density eni...
View ArticleMCP1725 supply current (Szidor)
Hi! I'm a newbie hobbyist, so this maybe a stupid question, but here goes:I bought an MCP-1725 fixed 3,3V voltage regulator. The datasheet indicates a typical supply current of 120uA. I put 4,5 V to...
View ArticleLithium battery charger with Buck-Boost regulator (juliosilva)
Hello, I'm developing a system that usually is connected at a 5V wall adapter, and when the adapter is removed it should keep working with a 3v7 Lithium battery, and notify my micro-controller.Also...
View ArticleMCP73871 2cci (gjacobs)
HiI am using the MCP73871 in a wireless charger and had no problems. Suddenly the timer error flags up when the Li-Ion cell is nearly fully charged. (Li-Ion cell thus never gets fully charged) What...
View ArticleHow can an MCP1640 get burned? (aetosa)
I 've made a small dc-dc converter with MCP1640.It worked ok, till it stopped outputting the expected voltage (3V).Suddenly it gave 1V.I changed the IC.Now it gave 3V.I connected it to the load (a...
View ArticleMCP73831 Does Vbat go Hi-Z when Vdd is removed? (Mark M)
Hi, I want to use the MCP73831 to charge two single cell Li-Po's. During charge mode the cells will be connected in parallel and during normal mode the cells will be connected in series and the...
View ArticleMCP73831 unstable status (Jim Lewis)
I have a MCP73831 on a PCB to charge a 1S 70mah LIPO for a simple PIC circuit. When I apply 5V to the input to start a charge the status LED turns on for ~1 sec, then over a few sec starts dimming and...
View ArticleMCP73113 battery charger security timer disable (teleko7)
Hi everybody I'm designing a system that charges a Li-Ion battery from a 5Vdc output of an ac/dc adapter from wall socket. At the same time, this very battery provides a 5Vdc output (via a boost...
View ArticleADC TC510 (hhmunjani)
I am having problem with TC510. The C Line of ADC has 50 KHZ pulse on it continuously. Could you pls suggest some solution ?What about OSC pin ? Should it be left Open ?..
View ArticleDDC112 20-bit ADC interface with PIC microcontrollers (shayanalibhatti)
Dear fellows,I am recently working in a Chemistry Analyser project which involves working on DDC112 20-bit ADC. But i am having difficulties in using the DDC112 IC. Can anyone who has used this IC tell...
View ArticleLi-po battery charger MCP73837-FCI burning / Error initiation VAC VUSB...
I mounted recommended circuit with MCP37837 in datasheet, except that I don't use VUSB, and connect together with VAC. Some devices in production work ok, but others burn. When I turn on (without...
View ArticleMCP4921 layout (Buriedcode)
Hi, I'm working on a precision, low frequency (<500sps update rate) DAC for converting RS232 output to analogue (+/-1 using an OP177) for industrial measurement. Using the MCP4921. After a quick and...
View ArticlePower dsPIC at 3.3V and sample ADC at 5V (Fransie)
Hi I am powering my dsPIC30F (2.5V - 5V operating range) with 3.3V to match an XBee also running at 3.3V. This is to ease UART communication from the dsPIC to the XBee. I need to sample ADC values at...
View ArticleUSB2514 Software Reset (GeorgeIoak)
USB: http://www.microchip.com/forums/fb.ashx?m=817503..
View ArticleMCP8063 with delta wired motor (richardindorset)
Anyone know how to connect this device to delta wired motor? TI and Allegro parts work with both Delta and Star configured motors...
View ArticleADC MCP3428 Offset Issue (jinsukseo3)
Hi all, The MCP3428 reports constant offset of 13~14mV with 0V input. The offset is consistent throughout the range of 0~2.048V. The configuration is set up for continuous conversion, 240 SPS, PGA = 1....
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