MAX261

可由微处理器编程的通用开关电容滤波器


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说明

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.
MAX260、MAX261、MAX262:功能框图 MAX260、MAX261、MAX262:功能框图 放大+

关键特性

  • 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

应用

  • µP调节滤波器
  • 自适应滤波器
  • 抗混叠滤波器
  • 数字信号处理(DSP)
  • 锁相环(PLL)
  • 信号分析
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
MAX260 22Switched CapUniversalProgrammableµP Bus0.017.55-
-55 to +125
0 to +85
0 to +100
PDIP/24
SOIC (W)/24
$9.63 @500
MAX261 0.4575
-55 to +125
-40 to +85
0 to +70
PDIP/24
SOIC (W)/24
$9.64 @500
MAX262 11405
-55 to +125
-40 to +85
0 to +70
PDIP/24
SOIC (W)/24
$11.52 @500
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Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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