MAX262: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
  • Filter Design Software Available
  • Microprocessor Interface
  • 64-Step Center Frequency Control
  • 128-Step Q Control
  • Independent Q and f0 Programming
  • Guaranteed Clock to f0 Ratio-1% (A grade)
  • 75kHz f0 Range (MAX262)
  • Single +5V and ±5V Operation
MAX260, MAX261, MAX262: Functional Diagram
MAX260, MAX261, MAX262: Functional Diagram
Applications/Uses
  • µP-Tuned Filters
  • Adaptive Filters
  • Anti-Aliasing Filters
  • Digital Signal Processing (DSP)
  • Phase-Locked Loops (PLLs)
  • Signal Analysis
DataSheet
titleDownload file
MAX260-MAX262 Data SheetMAX260-MAX262.pdf
Parametrics
Part NumberFilter SectionsOrder Per Filter SectionFilter ClassFilter TypeFilter CharacteristicProgram MethodLowest Cutoff
(Hz)
Highest Cutoff
(kHz)
VSUPPLY (Dual)
(±V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxminDualSee Notes
MAX26022Switched CapUniversalProgrammableµP Bus0.017.55--55 to +125
0 to +85
0 to +100
CDIP(N)/24
PDIP(N)/24
SOIC(W)/24
$9.63 @500
MAX2610.4575-55 to +125
-40 to +85
0 to +70
CDIP(N)/24
PDIP(N)/24
SOIC(W)/24
$8.63 @1k
MAX26211405-55 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 NumberStatusRecommended ReplacementPackageTempRoHS
MAX262ACNGNo Longer AvailableMAX262ACNG+PDIP(N),;24 pin;265.4 mm²0°C to +70°CNo
MAX262ACNG+ActivePDIP(N),;24 pin;265.4 mm²0°C to +70°CLead Free
MAX262ACWGNo Longer AvailableMAX262ACWG+SOIC(W),;24 pin;166.1 mm²0°C to +70°CNo
MAX262ACWG+ActiveSOIC(W),;24 pin;166.1 mm²0°C to +70°CLead Free
MAX262ACWG+TActiveW.SO;24 pin0°C to +70°CSee data sheet
MAX262ACWG-TNo Longer AvailableMAX262ACWG+TW.SO;24 pin0°C to +70°CSee data sheet
MAX262AENGNo Longer AvailableMAX262AENG+PDIP(N),;24 pin;265.4 mm²-40°C to +85°CNo
MAX262AENG+ActivePDIP(N),;24 pin;265.4 mm²-40°C to +85°CLead Free
MAX262AEWGNo Longer AvailableMAX262AEWG+SOIC(W),;24 pin;166.1 mm²-40°C to +85°CNo
MAX262AEWG+ActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX262AEWG+TActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
MAX262AEWG-TNo Longer AvailableMAX262AEWG+TW.SO;24 pin-40°C to +85°CSee data sheet
MAX262AMRGNo Longer AvailableCDIP(N),;24 pin;264.3 mm²-55°C to +125°CNo
MAX262AMRG/HRNo Longer AvailableCDIP(N),;24 pin;264.3 mm²-55°C to +125°CNo
MAX262BCNGNo Longer AvailableMAX262BCNG+PDIP(N),;24 pin;265.4 mm²0°C to +70°CNo
MAX262BCNG+ActivePDIP(N),;24 pin;265.4 mm²0°C to +70°CLead Free
MAX262BCWGNo Longer AvailableMAX262BCWG+SOIC(W),;24 pin;166.1 mm²0°C to +70°CNo
MAX262BCWG+ActiveSOIC(W),;24 pin;166.1 mm²0°C to +70°CLead Free
MAX262BCWG+TActiveW.SO;24 pin0°C to +70°CSee data sheet
MAX262BCWG-TNo Longer AvailableMAX262BCWG+TW.SO;24 pin0°C to +70°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX262BENGNo Longer AvailableMAX262BENG+PDIP(N),;24 pin;265.4 mm²-40°C to +85°CNo
MAX262BENG+ActivePDIP(N),;24 pin;265.4 mm²-40°C to +85°CLead Free
MAX262BEWGNo Longer AvailableMAX262BEWG+SOIC(W),;24 pin;166.1 mm²-40°C to +85°CNo
MAX262BEWG+ActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
MAX262BEWG+TActiveSOIC(W),;24 pin;166.1 mm²-40°C to +85°CLead Free
MAX262BEWG-TNo Longer AvailableMAX262BEWG+TW.SO;24 pin-40°C to +85°CSee data sheet
MAX262BMRGNo Longer AvailableCDIP(N),;24 pin;264.3 mm²-55°C to +125°CNo
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