The MAX263/264 and MAX267/268 CMOS switched-capacitor active filters are designed for precision filtering applications. Center frequency, Q, and operating mode are all selected via pin-strapped inputs. The MAX263/264 uses no external components for a variety of bandpass, lowpass, highpass, notch and allpass filters. The MAX267/268 is dedicated to bandpass applications and includes an uncommitted op-amp. Two second-order filter sections are included in both devices. An input clock and a 5-bit programming input precisely set the filter center/corner frequency. Q is also programmed from 0.5 to 64. Separate clock inputs for each filter half operate either an external clock or a crystal. The MAX263 and 267 operate with center frequencies up to 57kHz while the MAX264 and 268 extend the f0 range to 140kHz by employing lower fCLK/f0 ratios. The MAX263/264 is supplied in 28 pin wide DIP and small outline packages while the MAX267/268 is supplied in 24 pin narrow DIP and wide SO packages. All devices are available in commercial, extended, and military temperature ranges.
性格描写
- 32-Step Center Frequency Control
- 128-Step Q Control
- Independent Q and f0 Programming
- Guaranteed Clock to f0 Ratio—1% (A grade)
- 75kHz f0 Range (MAX264/268)
- Single +5V and ±5V Operation
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技術パラメーター
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Number of Channels
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2
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Cutoff Frequency
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140 kHz
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最大電源電圧
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12.6 V
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電源電圧 Min
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4.74 V
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最高使用温度
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+ 70 C
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マウントスタイル
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SMD/SMT
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パッケージ/ケース
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SOIC-24 Wide
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パッケージング
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リール
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最低使用温度
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0 C
MAX268ACWG-T Datasheet
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MAX268 data sheet for guidance
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