MAX261：Microprocessor Programmable Universal Active Filters
The MAX260/MAX261/MAX262 CMOS dual second-order universal switched-capacitor active filters allow microprocessor control of precise filter functions. No external components are required for a variety of bandpass, lowpass, highpass, notch, and allpass configurations. Each device contains two second-order filter sections that place center frequency, Q, and filter operating mode under programmed control. An input clock, along with a 6-bit f0 program input, determine the filter's center or corner frequency without affecting other filter parameters. The filter Q is also programmed independently. Separate clock inputs for each filter section operate with either a crystal, RC network, or external clock generator. The MAX260 has offset and DC specifications superior to the MAX261 and MAX262 and a center frequency (f0) range of 7.5kHz. The MAX261 handles center frequencies to 57kHz, while the MAX262 extends the center frequency range to 140kHz by employing lower clock-to-f0 ratios. All devices are available in 24-pin DIP and small outline packages in commercial, extended, and military temperature ranges.
Key Features
| MAX260, MAX261, MAX262: Functional Diagram Applications/Uses
|
DataSheet
| title | Download file |
|---|---|
| MAX260-MAX262 Data Sheet | MAX260-MAX262.pdf |
Parametrics
| Part Number | Filter Sections | Order Per Filter Section | Filter Class | Filter Type | Filter Characteristic | Program Method | Lowest Cutoff (Hz) | Highest Cutoff (kHz) | VSUPPLY (Dual) (±V) | VSUPPLY (V) | Oper. Temp. (°C) | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max | min | Dual | See Notes | ||||||||||
| MAX260 | 2 | 2 | Switched Cap | Universal | Programmable | µP Bus | 0.01 | 7.5 | 5 | - | -55 to +125 0 to +85 0 to +100 | CDIP(N)/24 PDIP(N)/24 SOIC(W)/24 | $9.63 @500 |
| MAX261 | 0.4 | 57 | 5 | -55 to +125 -40 to +85 0 to +70 | CDIP(N)/24 PDIP(N)/24 SOIC(W)/24 | $8.63 @1k | |||||||
| MAX262 | 1 | 140 | 5 | -55 to +125 -40 to +85 0 to +70 | CDIP(N)/24 PDIP(N)/24 SOIC(W)/24 | $11.52 @1k | |||||||
Quality and Environmental Data
Related Products
- MAX267：Pin-Programmable Universal and Bandpass Filters
- MAX264：Pin-Programmable Universal and Bandpass Filters
- MAX263：Pin-Programmable Universal and Bandpass Filters
- MAX268：Pin-Programmable Universal and Bandpass Filters
- MAX265：Resistor-Pin-Programmable, Universal Switched Capacitor Filter
- MAX266：Resistor-Pin-Programmable, Universal Switched Capacitor Filter
Ordering Information
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
|---|---|---|---|---|---|
| MAX261ACNG | No Longer Available | MAX261ACNG+ | PDIP(N),;24 pin;265.4 mm² | 0°C to +70°C | No |
| MAX261ACNG+ | Active | PDIP(N),;24 pin;265.4 mm² | 0°C to +70°C | Lead Free | |
| MAX261ACWG | No Longer Available | MAX261ACWG+ | SOIC(W),;24 pin;166.1 mm² | 0°C to +70°C | No |
| MAX261ACWG+ | Active | SOIC(W),;24 pin;166.1 mm² | 0°C to +70°C | Lead Free | |
| MAX261ACWG+T | Active | W.SO;24 pin | 0°C to +70°C | See data sheet | |
| MAX261ACWG-T | No Longer Available | MAX261ACWG+T | W.SO;24 pin | 0°C to +70°C | See data sheet |
| MAX261AENG | No Longer Available | MAX261AENG+ | PDIP(N),;24 pin;265.4 mm² | -40°C to +85°C | No |
| MAX261AENG+ | Active | PDIP(N),;24 pin;265.4 mm² | -40°C to +85°C | Lead Free | |
| MAX261AEWG | No Longer Available | MAX261AEWG+ | SOIC(W),;24 pin;166.1 mm² | -40°C to +85°C | No |
| MAX261AEWG+ | Active | SOIC(W),;24 pin;166.1 mm² | -40°C to +85°C | Lead Free | |
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
| MAX261AEWG+T | Active | SOIC(W),;24 pin;166.1 mm² | -40°C to +85°C | Lead Free | |
| MAX261AEWG-T | No Longer Available | MAX261AEWG+T | W.SO;24 pin | -40°C to +85°C | See data sheet |
| MAX261AMRG | No Longer Available | CDIP(N),;24 pin;264.3 mm² | -55°C to +125°C | No | |
| MAX261AMRG/HR | No Longer Available | CDIP(N),;24 pin;264.3 mm² | -55°C to +125°C | No | |
| MAX261BCNG | No Longer Available | MAX261BCNG+ | PDIP(N),;24 pin;265.4 mm² | 0°C to +70°C | No |
| MAX261BCNG+ | Active | PDIP(N),;24 pin;265.4 mm² | 0°C to +70°C | Lead Free | |
| MAX261BCWG | No Longer Available | MAX261BCWG+ | SOIC(W),;24 pin;166.1 mm² | 0°C to +70°C | No |
| MAX261BCWG+ | Active | SOIC(W),;24 pin;166.1 mm² | 0°C to +70°C | Lead Free | |
| MAX261BCWG+T | Active | SOIC(W),;24 pin;166.1 mm² | 0°C to +70°C | Lead Free | |
| MAX261BCWG-T | No Longer Available | MAX261BCWG+T | W.SO;24 pin | 0°C to +70°C | See data sheet |
| Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
| MAX261BENG | No Longer Available | MAX261BENG+ | PDIP(N),;24 pin;265.4 mm² | -40°C to +85°C | No |
| MAX261BENG+ | Active | PDIP(N),;24 pin;265.4 mm² | -40°C to +85°C | Lead Free | |
| MAX261BEWG | No Longer Available | MAX261BEWG+ | SOIC(W),;24 pin;166.1 mm² | -40°C to +85°C | No |
| MAX261BEWG+ | Active | SOIC(W),;24 pin;166.1 mm² | -40°C to +85°C | Lead Free | |
| MAX261BEWG+T | Active | SOIC(W),;24 pin;166.1 mm² | -40°C to +85°C | Lead Free | |
| MAX261BEWG-T | No Longer Available | MAX261BEWG+T | W.SO;24 pin | -40°C to +85°C | See data sheet |
| MAX261BMRG | No Longer Available | CDIP(N),;24 pin;264.3 mm² | -55°C to +125°C | No |
- MAX260-MAX262.pdf MAX262
- MAX261.pdf MAX261
- MAX260-MAX262.pdf MAX262
