TI E2E Community
Audio Amplifiers Forum
Question about // and + for parallel and series in datasheet examples
Just checking; I can't seem to find information about this through internet searches:
I would like to clarify the meaning of "//" and "+" in some schematics.
Case Example: In the LM4562 data sheet, pdf page 2 (1st page after cover sheet), bottom, under Typical Application, the Passively Equalized RIAA Phono Preamplifier:
Between the two sections of the op amp:
Middle resistor, 26.1KOhm + 909 Ohm
Adjacent capacitor to ground: 22nF // 4.7nF // 500pF
In the latter, I would take "//" to mean components in parallel. Does this mean that the "+" means components in series? There is also another set in the same area:
3.83KOhm + 100 Ohm and 47nF // 33nF. So would this mean the resistors are in series, adding to each other, and the caps are in parallel?
You are correct. // indicates components in parallel, + inidcates components in series. The schematic is showing how to achieve the desired R and C values with standard value components.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.