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OPA843 Datasheet(PDF) 1 Page - Burr-Brown (TI) |
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OPA843 Datasheet(HTML) 1 Page - Burr-Brown (TI) |
1 / 22 page DESCRIPTION The OPA843 provides a level of speed and dynamic range previously unattainable in a monolithic op amp. Using a high Gain Bandwidth (GBW), two gain-stage design, the OPA843 gives a medium gain range device with exceptional dynamic range. The “classic” differential input complements this high dynamic range with DC precision beyond most high-speed amplifier products. Very low input offset voltage and current, high Common-Mode Rejection Ratio (CMRR) and Power- Supply Rejection Ratio (PSRR), and high open-loop gain combine to give a high DC precision amplifier along with low noise and high 3rd-order intercept. 12- to 16-bit converter interfaces will benefit from this combi- nation of features. High-speed transimpedance applications can be implemented with exceptional DC precision as well. Differential configurations using two OPA843s can deliver very low distortion to high output voltages, as shown below. FEATURES q HIGH BANDWIDTH: 260MHz (G = +5) q GAIN BANDWIDTH PRODUCT: 800MHz q LOW INPUT VOLTAGE NOISE: 2.0nV/ √Hz q VERY LOW DISTORTION: –96dBc (5MHz) q HIGH OPEN-LOOP GAIN: 110dB q FAST 12-BIT SETTLING: 10.5ns (0.01%) q LOW INPUT OFFSET VOLTAGE: 300 µV q OUTPUT CURRENT: ±100mA APPLICATIONS q ADC/DAC BUFFER AMPLIFIER q LOW DISTORTION “IF” AMPLIFIER q ACTIVE FILTERS q LOW-NOISE RECEIVER q WIDEBAND TRANSIMPEDANCE q TEST INSTRUMENTATION q PROFESSIONAL AUDIO q OPA643 UPGRADE OPA843 SBOS268A – DECEMBER 2002 – OCTOBER 2003 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. Copyright © 2002-2003, 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. Wideband, Low Distortion, Medium Gain, Voltage-Feedback OPERATIONAL AMPLIFIER INPUT NOISE GAIN-BANDWIDTH SINGLES VOLTAGE (nV/√Hz ) PRODUCT (MHz) OPA842 2.6 200 OPA846 1.2 1750 OPA847 0.85 3900 OPA843 RELATED PRODUCTS OPA8 43 V O = 10VI V I 1:1 50 Ω 132 Ω OPA843 OPA843 +5V +5V –5V –5V Very Low Distortion Differential Driver R L 400 Ω 402 Ω 40.2 Ω 40.2 Ω 402 Ω DIFFERENTIAL DISTORTION vs OUTPUT VOLTAGE Output Voltage Swing (Vp-p) 10 1 –85 –90 –95 –100 –105 –110 G D = 10 R L = 400Ω F = 5MHz 2nd-Harmonic 3rd-Harmonic |
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