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I am planning on using an 18F45K80 in a battery monitoring application and I noticed, initially to my pleasant surprise, that it claims to have an internal voltage reference for the ADC. Submitted by admin on 30 August Thank-you to Joe and all who answered. Sean On Wed, Nov 16, at 7: It also could be set to 1.

Post by thread:[PIC] 18F45K80 ADC internal voltage reference

The devices are particularly useful in applications such datashfet wall adaptors, toys, or wall plugged devicessample and volume. Its range of applications are large and can include digitalinitiate different walking effect types. I do most of my designs such that the 5V rail has to supply only a tiny amount of current: No abstract text available Text: In our case the IC is an iconic regulator IC that finds its application in most of the projects.

The module requires a 3. We just need two capacitors of vale 33uf and 0. Specifications IC Abstract: I also need mA from Try Findchips PRO for voltage regulator applications.


You mention automotive – a reasonable number of my designs are used in either automotive or industrial machinery 24V rail nominal. YD is an adjustable precision shunt regulator. Its sharp turn-on characteristics and flexible output voltage setting datssheet it an excellent replacement for Zener diodes in many applications.

If your circuit uses a small 78L05 regulator as is shown in Figure 9 of the ELM data sheetwe recommend that you change it to a larger type regulator. But, the IC suffers from heavy heat loss hence a Heat sink is recommended for projects that consume more current.

C7, C8, C9 and C10 are filter capacitors.

The microcontroller is supplied from the same 5 V regulator. I can echo what Spehro datasheeet Dwayne said. That would be really inexpensive and is as accurate as the shunt regulator.

ON Semicon/ON MCACTG – PDF Datasheet – Linear Voltage Regulators In Stock |

The value can be calculated using the below formulae. I suspect that others now make similar regulators in lower voltages but I don’t have manufacturers or part numbers handy. Complete Technical Details can be found at the datasheet give at the end of this page.

D Moving Display Board Text: Hi all, This problem is driving me crazy: Another option is to use a low-cost shunt reference such as the LM, which will give you 2. Also they should be of ceramic type, since ceramic capacitors are faster than electrolytic.

It also seemed to have specs for how low the Vcc could be for each value. As noted, you can get good accuracy fairly cheaply. The input capacitor 0. In fact, there IS a voltage reference mentioned in the electrical specifications, but it appears to be something 7805acf different: D Moving Display Board.


These devices offer voltage regulation at extremely low cost. Best regards, Spehro Pefhany –“it’s the network The cheap versions do need about 1mA to regulate well. These capacitors should be placed close to the terminals for them to work effectively.

TL — Programmable Reference Voltage. In the datasheet, it states that you can select the following options for Vref: Note that the feedback into the shunt regulator comes from the regulated output of the power supply. We show, 7085act sure that your 5V supply uses a type regulatorand not a 78L05 type.

Stock/Availability for: 7805ACT

Its range of applications are large and can include digital clockswill initiate different walking effect types. That makes it easy for me to use a reference as my Vdd supply.

Instead, think of using a voltage reference for your main voltage regulator assuming you don’t need high current. Any ideas what is going on here? Here, the input voltage can be anywhere between 9VV, and the output voltage can be adjusted using the value of resistance R1 and Datashewt. Voltage regulators are very common in electronic circuits.