All,
I am looking at two devices:
1. NJM567 (Made by JRC then Phillips)
2. LM567 (Made by TI)
These look fundamentally the same. The data sheet for each looks identical (same equivalent schematic). However, the formula quoted for calculating the central tone frequency differs in both data sheets (I have attached both).
1. Fo = 1 / (1.07 x R x C)
2. Fo = 1.1 / (R x C)
Before I start designing I want to understand why these are different?
I cant understand why they would be from the data sheets.
Does anyone have any experience in using either device and can fill in the blanks?
I thought equation 2 would be one I used, however I got confused when I seen the formula in data sheet 1.
Many thanks,
Stuart
I am looking at two devices:
1. NJM567 (Made by JRC then Phillips)
2. LM567 (Made by TI)
These look fundamentally the same. The data sheet for each looks identical (same equivalent schematic). However, the formula quoted for calculating the central tone frequency differs in both data sheets (I have attached both).
1. Fo = 1 / (1.07 x R x C)
2. Fo = 1.1 / (R x C)
Before I start designing I want to understand why these are different?
I cant understand why they would be from the data sheets.
Does anyone have any experience in using either device and can fill in the blanks?
I thought equation 2 would be one I used, however I got confused when I seen the formula in data sheet 1.
Many thanks,
Stuart