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OPA698 Datasheet(PDF) 1 Page - Texas Instruments |
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OPA698 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 32 page www.ti.com 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. OPA698 Unity-Gain Stable, Wideband Voltage Limiting Amplifier FEATURES q HIGH LINEARITY NEAR LIMITING q FAST RECOVERY FROM OVERDRIVE: 1ns q LIMITING VOLTAGE ACCURACY: ±10mV q –3dB BANDWIDTH (G = +1): 450MHz q GAIN BANDWIDTH PRODUCT: 250MHz q SLEW RATE: 1100V/ µs q ±5V AND +5V SUPPLY OPERATION q HIGH-GAIN VERSION AVAILABLE: OPA699 APPLICATIONS q FAST LIMITING ANALOG-TO-DIGITAL CONVERTER (ADC) INPUT BUFFERS q CCD PIXEL CLOCK STRIPPING q VIDEO SYNC STRIPPING q HF MIXERS q IF LIMITING AMPLIFIERS q AM SIGNAL GENERATION q NONLINEAR ANALOG SIGNAL PROCESSING q OPA688 UPGRADE DESCRIPTION The OPA698 is a wideband, unity-gain stable voltage- feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when it attempts to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±10mV. The op amp operates linearly to within 20mV of the output limit voltages. The combination of a narrow nonlinear range and the low limiting offset allows the limiting voltages to be set within 100mV of the desired linear output range. A fast 1ns recovery from limiting ensures that overdrive signals will be transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA698 to be used in all standard op amp applications. Nonlinear analog signal processing will benefit from the ability of the OPA698 to sharply transition from linear opera- tion to output limiting. The quick recovery time supports high-speed applications. The OPA698 is available in an industry standard pinout SO-8 package. For higher gain, or transimpedance applications requiring output limiting with fast recovery, consider the OPA699. OPA698 SBOS258D – NOVEMBER 2002 – REVISED DECEMBER 2008 www.ti.com Copyright © 2002-2008, 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. OPA698 V S = +5V 4 2 3 7 5 8 6 V S = +5V +3.5V +1.5V V IN REFB REFT IN 0.1 µF 100pF V H = +3.6V V L = +1.4V 0.1 µF 0.1 µF 0.1 µF 402 Ω 24.9 Ω 562 Ω 102 Ω 402 Ω 715 Ω 715 Ω 102 Ω 562 Ω ADS822 10-Bit 40MSPS 10-Bit Data V S = +5V INT/EXT RSEL +V S GND Single-Supply Limiting ADC Input Driver |
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