{"product_id":"max262-programmable-filter-bandpass-band-resistant-all-pass-low-pass-high-pass","title":"MAX262 Programmable Filter Bandpass Band-Resistant All-Pass Low-Pass High-Pass","description":"\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eThe LP\/HP\/BP\/NO filter can be built using the principle of switched capacitor filtering.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eThe internal contains two identical filtering units A\/B, each unit is two-section filtering, so a MAX262 can form a fourth-order filter.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eFour parameters are used when using: center frequency f0, Q value, clock frequency, working mode. The type of filter (LP\/HP\/BP\/NOTCH) is determined by the pin connection. The cutoff frequency f0 of the filter is determined by fclk and the parameter FN. The Q value of the filter is determined by the parameter QN.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eThe parameter measurement can be more accurate, but because it is switched capacitor filtering, so the output waveform is stepped. The common method is to add a RC low-pass filter to remove the high-frequency clock signal.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eDetailed Description:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. Four modes\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eMode 1: Band pass, low pass. Applicable types Butterworth, Chebyshev, Bessel. Can also be used for band stop filters.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eMode 2: All-pole band pass, low pass\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eMode 3: Elliptical Bandpass, Elliptical Lowpass, Qualcomm\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eMode 4: All Pass\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. Fclk is input through pin CLKA\/CLKB, which can change the cutoff frequency of the filter together with the parameter FN.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e3. The FN value is a decimal representation of the binary value for F0,Q.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eThe center frequency range is 1HZ-100KHZ, and the MAX262 center frequency can be up to 140KHZ.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eCalculation method of center frequency or inflection point frequency:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eMode 1, 3, 4: Fclk \/ f0 = (26 + N) pi \/ 2; converted f0 = fclk * 2 \/ pi \/ (26 + N)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"font-size:14px;\"\u003eMode 2: N= fclk\/f0\/1.11072-26·\u003c\/span\u003e\u003cbr\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e4. QN values ?����range from 0.5-64.0, maximum mode up to 90\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eQ value control word calculation method:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eMode 1, 3, 4: N = 128-64\/Q\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cspan style=\"font-size:14px;\"\u003eMode 2: N=128-90.51\/Q\u003c\/span\u003e\u003cbr\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e5. The working mode, FN, and QN can be stored in the MAX262 internal ROM by writing the address lines, data lines, and control lines of the MAX262, thereby making the system work.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eSelect A0-A3, the data in the ROM will be updated, and D0\/D1 for the data bits. Data is written on the rising edge of the WR signal. The electrical signal at the Fclk input does not interfere with the digital signal.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eDetail:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. Adding a latch\/trigger to the SCM when connected to the MAX262 can significantly reduce interference.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. There are two ways to set the frequency f0:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eMethod 1: fclk is fixed and the value of FN is changed. Since the FN range is only [0-63], the step value is small and the accuracy is low.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eMethod 2: FN is fixed and fclk is changed. Adjusting fclk gives a satisfactory cutoff frequency.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. Power: ±5V typical power supply\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. Input and output two SMA interfaces INA, INB, VOUTA, VOUTB, output A and B can be cascaded by jumper P1 to realize fourth-order or other form of filter\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:16px;\"\u003e\u003cstrong\u003ePackage includes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1 x MAX262 Programmable Filter\u003c\/span\u003e\u003c\/div\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/DC\/D4\/7f808f45-ab1a-413a-86c5-b84f1400ba44.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/F2\/88\/f756c354-65af-442f-a851-3969cc9bcabd.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/82\/B5\/45335b54-9e76-4abf-9ced-3193201c676c.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/18\/9F\/1ace3ad2-724f-4b19-bf48-069ec202e548.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/E6\/02\/e872f3ca-0e5a-4179-9d5e-64aeff862624.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/A3\/60\/caa9ac79-edf9-4d01-b15e-f8f2db79a50c.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/AC\/78\/38406f9d-a961-4810-95e9-a9970f20b64a.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/FC\/C9\/b9c19b37-916f-4328-b0a3-3c1f6d85f510.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/F3\/E3\/92a1e44e-3d40-42b3-b82e-fb237c003e8a.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/77\/B9\/3b0bf105-1d10-4f56-9a5a-603116461324.JPG\"\u003e","brand":"Shopify","offers":[{"title":"Default Title","offer_id":14008696832044,"sku":"1382154","price":1141.96,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2787\/9162\/products\/359a9ed4-4920-4854-9ac5-2f9dd86b40ae_420925c9-2993-4c92-88a3-90fe0e1a041e.jpg?v=1587027641","url":"https:\/\/electronic-pro-south-africa.myshopify.com\/products\/max262-programmable-filter-bandpass-band-resistant-all-pass-low-pass-high-pass","provider":"Electronic Pro ","version":"1.0","type":"link"}