MAX262 Programmable Filter Bandpass Band-Resistant All-Pass Low-Pass High-Pass Universal Filter 140KHz

MAX262 Programmable Filter Bandpass Band-Resistant All-Pass Low-Pass High-Pass Universal Filter 140KHz

Name: MAX262 Programmable Filter Bandpass Band-Resistant All-Pass Low-Pass High-Pass Universal Filter 140KHz
Brand: Elecbee
SKU: EB0041635
Price: 34.99 USD
Availability: InStock
Rating: 141 / 29 (29 reviews)

$34.99

SKU: EB0041635

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MAX262 Programmable Filter Bandpass Band-Resistant All-Pass Low-Pass High-Pass Universal Filter 140KHz

EB0041635

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Description

Overview:

The LP/HP/BP/NO filter can be built using the principle of switched capacitor filtering.

The internal contains two identical filtering units A/B, each unit is two-section filtering, so a MAX262 can form a fourth-order filter.

Four 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.

The 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.

Detailed Description:

1. Four modes

Mode 1: Band pass, low pass. Applicable types Butterworth, Chebyshev, Bessel. Can also be used for band stop filters.

Mode 2: All-pole band pass, low pass

Mode 3: Elliptical Bandpass, Elliptical Lowpass, Qualcomm

Mode 4: All Pass

2. Fclk is input through pin CLKA/CLKB, which can change the cutoff frequency of the filter together with the parameter FN.

3. The FN value is a decimal representation of the binary value for F0,Q.

The center frequency range is 1HZ-100KHZ, and the MAX262 center frequency can be up to 140KHZ.

Calculation method of center frequency or inflection point frequency:

Mode 1, 3, 4: Fclk / f0 = (26 + N) pi / 2; converted f0 = fclk * 2 / pi / (26 + N)

Mode 2: N= fclk/f0/1.11072-26·

4. QN values ??range from 0.5-64.0, maximum mode up to 90

Q value control word calculation method:

Mode 1, 3, 4: N = 128-64/Q

Mode 2: N=128-90.51/Q

5. 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.

Select 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.

Detail:

1. Adding a latch/trigger to the when connected to the MAX262 can significantly reduce interference.

2. There are two ways to set the frequency f0:

Method 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.

Method 2: FN is fixed and fclk is changed. Adjusting fclk gives a satisfactory cutoff frequency.

1 x MAX262 Programmable Filter

MAX262-Programmable-Filter-Bandpass-Band-Resistant-All-Pass-Low-Pass-High-Pass-Universal-Filter-140K-1382154

Reviews (29)
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Q & A

: Where is the origin of Elecbee products? Are they certificated?

2023-03-03

Answer:

Elecbee has long-term cooperation agreements with the OEM factories in China. So that we are able to reduce the intermediate channel cost, and help you save money. Our products are all made strictly according to the relative global standard, to ensure the products have good compatibility and excellent quality.

2023-03-03

: What forms of payment do you accept?

2023-03-03

Answer:

Our main payment methods include Paypal, Credit Cards, Debit Cards, Bank Transfer, and more to discover. Please choose the payment methods in your favor.

2023-03-03

: When will you arrange shipment?

2023-03-03

Answer:

After confirming receipt of your payment. We will arrange the delivery as soon as possible and upload the courier number to the website for you to track.

2023-03-03

: How to exchange or return?

2023-03-03

Answer:

1. You can apply to return within 30 days after receipt of the goods. Please make sure the outside package is intact, and the product is in its original condition. We will arrange your refund according to the relevant provisions once the package is received.

2. Return process: You Apply for a Return - Approve the Return - Arrange a Return - Receive the Products and make Inspection - We arrange a Refund;

3. We will bear the freight charges for returns caused by us, for instance, the quality problem. As to returns caused by the buyer, the buyer should be responsible for the shipping fee.

2023-03-03