OPA2674

具有电流限制的双宽带高输出电流运算放大器

The provides the high output current and low distortion required in emerging xDSL and Power Line Modem driver applications. Operating on a single +12V supply, the OPA2674 consumes a low 9mA/ch quiescent current to deliver a very high 500mA output current. This output current supports even the most demanding ADSL CPE requirements with > 380mA minimum output current +25°C minimum value with low harmonic distortion. Differential driver applications deliver < –85dBc distortion at the peak upstream power levels of full rate ADSL. The high 200MHz bandwidth also supports the most demanding VDSL line driver requirements.

Power control features are included in the SO-14 package version to allow system power to be minimized. Two logic control lines allow four quiescent power settings. These include full power, power cutback for short loops, idle state for no signal transmission but line match maintenance, and shutdown for power off with a high impedance output.

Specified on ±6V supplies to support +12V operation, the OPA2674 will also support a single +5V or dual &plusmn5V supply. Video applications will benefit from a very high output current to drive up to 10 parallel video loads 15Ω with < 0.1%/0.1° dG/dP nonlinearity.

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WIDEBAND +12V OPERA ON: 220MHz G = +4

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UNITY-GAIN STABLE: 250MHz G = +1

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HIGH OUTPUT CURRENT: 500mA

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OUTPUT VOLTAGE SWING: 10VPP

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HIGH SLEW RATE: 2000V/µs

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LOW SUPPLY CURRENT: 18mA

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FLEXIBLE POWER CONTROL: SO-14 Only

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OUTPUT CURRENT LIMIT ±800mA

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APPLICATIONS

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POWER LINE MODEM

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xDSL LINE DRIVERS

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CABLE MODEM DRIVERS

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MATCHED I/Q CHANNEL AMPLIFIERS

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BROADBAND VIDEO LINE DRIVERS

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ARB LINE DRIVERS

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HIGH CAP LOAD DRIVER

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