A Compact Algorithm using the ADXL202 Duty Cycle Output:  AN-603 - Analog Devices Application Notes  (added 2/06)

Algorithm Converts Random Variables to Normal:  05/11/95 EDN-Design Ideas / (Schematic / circuit added 10/05)

Algorithm Evaluates Complex Fractions :  08/03/95 EDN-Design Ideas / (Schematic / circuit added 10/05)  The following algorithm uses rectangular-to-polar conversion to evaluate a complex fraction (one that includes imaginary numbers). The algorithm is most convenient when you can perform the rectangular-to-polar-coordinate and polar-to-rectangular-coordinate conversions using a calculator such an HP 11C. You can reduce all the necessary steps to two keystrokes or, if the calculator is programmable, to one program step. When computing transfer functions and Bode plots, you can determine the gain and phase at the end of step 4 before....

Algorithm Extracts Cube Root :  1/15/98 EDN Design Ideas /  (Schematic / circuit added 10/05)

Algorithm Extracts Roots of Decimal Numbers:  04/29/99 EDN-Design Ideas / (Schematic / circuit added 10/05) "Algorithm extracts cube root" (EDN, Jan 15, 1998, pg 100) covers only the one-third power (cube root). In contrast, the C routine in Listing 1 calculates the Kth root (X1/K) of positive decimal numbers X. Both K and X can vary widely. You type in X, K, and an estimate of the root; the routine then calls the calcRoot function in the software program. Upon calculating the root, the routine prints on screen the number of iterations performed and the root result X1/K. The routine raises this result to the Kth power and displays the result so you can make a comparison with the original X. The algorithm applies a Newton-Raphson approach to the equation Y=X1/K. If you differentiate the equation and express it in recursive form, you obtain....

Algorithm Nulls DC Offsets in DSP:  09/15/94 EDN Design Ideas /  (Schematic / circuit added 10/05)

Algorithm Tests for Point Location:  08/03/00 EDN-Design Ideas  / (Schematic / circuit added 10/05)   

Algorithm Transforms Filter Coefficients:  01/21/99 EDN-Design Ideas / (Schematic / circuit added 10/05) To synthesize infinite-impulse-response (IIR)-filter functions, expressed as H(z), you commonly use analog prototype-filter functions, expressed as H(s), using the bilinear-z transform. This operation entails some algebraic complexity in calculating the filter coefficients. The simple algorithm shown here transforms the prototype-filter coefficients (W0, W1, W2) to the IIR digital-filter coefficients (U0, U1, U2). These coefficients transform from the s (analog) domain to the z (digital) domain....

Algorithm Yields Precise Bessel Function:  11/09/95 EDN-Design Ideas / (Schematic / circuit added 10/05) 

An IC Amplifier User’s Guide to Decoupling, Grounding, and Making Things Go Right for a Change:  AN-202 - Analog Devices Application Notes  (Circuit / schematic design added 6/06)

AN-243: Graphics/Alphanumerics Systems using the DP8350:  National Semiconductor - Application Note   (app note added 2/06)

AN-311: Theory and Applications of Logarithmic Amplifiers:  National Semiconductor - Application Note   (app note added 2/06)

AN-405: Increasing the Speed of the Output Response of the AD606:  AN-405 - Analog Devices Application Notes  (app note added 6/06)

AN544: Math Utility Routines:  Microchip Application Note - Published 26-Aug-97   (added 2/06)

AN-603: A Compact Algorithm using the ADXL202 Duty Cycle Output:  AN-603 - Analog Devices Application Notes  (added 2/06)

AN-604: Using the ADXL202 Duty Cycle Output:  AN-604 - Analog Devices Application Notes  (app note  added 6/06)

AN752: AN752 CRC Algorithm for Mcrf45x Read/Write Device:  Microchip Application Note - Published 15-Mar-01   (added 2/06)

AN788: Numerical Integration Techniques (TC7109):  Microchip Application Note - Published 12-Nov-02   (added 2/06)

White LED Driver provides 64 step logarithmic dimming:  06/10/04 EDN Design Ideas  /  (added 1/05)  The circuit in this Design Idea is designed for portable-power applications that require white LEDs with adjustable, logarithmic dimming levels. The circuit drives as many as four white LEDs from a 3.3V source.