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| OPA2690 |
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FEATURES D FLEXIBLE SUPPLY RANGE: +5V to +12V Single Supply ±2.5V to ±6V Dual Supply D WIDEBAND +5V OPERATION: 220MHz (G = 2) D HIGH OUTPUT CURRENT: 190mA D OUTPUT VOLTAGE SWING: ±4.0V D HIGH SLEW RATE: 1800V/µs D LOW SUPPLY CURRENT: 5.5mA/ch D LOW DISABLED CURRENT: 100µA/ch APPLICATIONS D VIDEO LINE DRIVING D xDSL LINE DRIVER/RECEIVER D HIGH-SPEED IMAGING CHANNELS D ADC BUFFERS D PORTABLE INSTRUMENTS D TRANSIMPEDANCE AMPLIFIERS D ACTIVE FILTERS 0.1 µF IN +5V 10pF 0.1 µF 10pF 499 Ω 499 Ω Clock IN REFT REFB AD S825 10−Bit 40MSP S 1/2 O P A 269 0 +5V +2.5V +2.5V +2.5V 1/2 O P A 269 0 V IN 1k Ω 1k Ω 499 Ω 499 Ω 35 Ω 35 Ω 2k Ω 100 Ω 100pF 2k Ω 2.5V CM 2V PP Single-Supply Differential ADC Driver DESCRIPTION The OPA2690 represents a major step forward in unity-gain stable, voltage-feedback op amps. A new internal architecture provides slew rate and full-power bandwidth previously found only in wideband, current-feedback op amps. A new output stage architecture delivers high currents with a minimal headroom requirement. These give exceptional single-supply operation. Using a single +5V supply, the OPA2690 can deliver a 1V to 4V output swing with over 120mA drive current and 150MHz bandwidth. This combination of features makes the OPA2690 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver. The low 5.5mA/ch supply current of the OPA2690 is precisely trimmed at +25 °C. This trim, along with low temperature drift, ensures lower maximum supply current than competing products. System power may be reduced further using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, will operate the OPA2690I-14D normally. If pulled LOW, the OPA2690I-14D supply current drops to less than 200 µA/ch while the output goes to a high-impedance state. OPA2690 RELATED PRODUCTS SINGLES DUALS TRIPLES Voltage-Feedback OPA2690 OPA2680 OPA3690 Current-Feedback OPA691 OPA2691 OPA3691 Fixed Gain OPA692 — OPA3692 HARMONIC DISTORTION vs FREQUENCY FOR THE SINGLE−SUPPLY ADC DRIVER Frequency (MHz) −50 −55 −60 −65 −70 −75 −80 −85 −90 −95 −100 110 20 3rd−Harmonic 2nd−Harmonic 2V PP Differential Output OPA2690 SBOS238D − JUNE 2002 − REVISED DECEMBER 2004 Dual, Wideband, Voltage-Feedback OPERATIONAL AMPLIFIER with Disable PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. www.ti.com Copyright 2002−2004, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. |
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