 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
TC815 Datasheet(PDF) 10 Page - Microchip Technology |
|
||||||||||||||||||||||||||||||
TC815 Datasheet(HTML) 10 Page - Microchip Technology |
|
|
10 / 26 page  TC815 DS21474B-page 10 © 2002 Microchip Technology Inc. 3.5 Current Measurement The TC815 measures current only under manual range operation. The two user selectable full scale ranges are: 20mA and 200mA. Select the current Measure- ment mode by holding the I input (Pin 63) low at digital ground potential. The OHM input (Pin 2) is left floating or tied to the positive supply. Two ranges are possible. The 20mA full scale range is selected by connecting the 20mA input (Pin 3) to digital ground. If left floating the 200mA full scale range is selected. External current to voltage conversion resistors are used at the II input (Pin 45). For 20mA measurements a10 Ω resistor is used. The 200mA range needs a 1Ω resistor; full scale is 200mV. PC board trace resistance between analog common and R16 (see Figure 2-1) must be minimized. In the 200mA range, for example, a 0.05 trace resistance will cause a 5% current to voltage conversion error at II (Pin 45). The extended resolution measurement option operates during current measurements. To minimize rollover error the potential difference between ANALOG COM (Pin 29) and system common must be minimized. 3.6 Measurement Options (AC to DC Measurements) In voltage and current measurements, the TC815 can be configured for AC measurements. An on-chip oper- ational amplifier and external rectifier components per- form the AC to DC conversion. When power is first applied, the TC815 enters the DC Measurement mode. For AC measurements (current or voltage), AC/DC (Pin 62) is momentarily brought low to digital ground potential; the TC815 sets-up for AC mea- surements and the AC liquid crystal display annuncia- tor activates. Toggling AC/DC low again will return the TC815 to DC operation. If the Manual Operating mode has been selected, tog- gling AC/DC will reset the TC815 back to the Auto- Range mode. In Manual mode operation, AC or DC operation should be selected first and then the desired range selected. The minimum AC voltage full scale voltage range is 2V. The DC full scale minimum voltage is 200mV. AC cur- rent measurements are available on the 20mA and 100mA full scale current ranges. |
Similar Part No. - TC815 |
|
Similar Description - TC815 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
