OPA2691

具有禁用功能的双路宽带电流反馈运算放大器

The sets a new level of performance for broadband dual current-feedback op amps. Operating on a very low 5.1mA/ch supply current, the OPA2691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA2691 can deliver a 1V to 4V output swing with over 150mA drive current and 190MHz bandwidth. This combination of features makes the OPA2691 an ideal RGB line driver or single-supply Analog-to-Digital Converter ADC input driver.

The OPA2691’s low 5.1mA/ch supply current is precisely trimmed at 25°C. This trim, along with low drift over temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin SO-14 only. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA2691 supply current drops to less than 150 µA/ch while the output goes into a high impedance state. This feature may be used for power savings.

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FLEXIBLE SUPPLY RANGE:

   +5V to +12V Single Supply

   ±2.5V to ±6V Dual Supply

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WIDEBAND +5V OPERA ON: 190MHz G =+2

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UNITY-GAIN STABLE: 280MHz G =1

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HIGH OUTPUT CURRENT: 190mA

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OUTPUT VOLTAGE SWING: ±4.0V

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HIGH SLEW RATE: 2100V/µs

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LOW SUPPLY CURRENT: 5.1mA/ch

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LOW DISABLED CURRENT: 150 µA/ch

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APPLICATIONS

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xDSL LINE DRIVER/RECEIVER

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MATCHED I/Q CHANNEL AMPLIFIER

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BROADBAND VIDEO BUFFERS

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HIGH-SPEED IMAGING CHANNELS

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PORTABLE INSTRUMENTS

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DIFFERENTIAL ADC DRIVERS

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ACTIVE FILTERS

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WIDEBAND INVERTING SUMMING

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