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OPA652K5 Datasheet(PDF) 1 Page - Texas Instruments |
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OPA652K5 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 25 page APPLICATIONS q WIDEBAND PHOTODIODE AMPLIFIERS q SAMPLE-AND-HOLD BUFFERS q CCD OUTPUT BUFFERS q ADC INPUT BUFFERS q WIDEBAND PRECISION AMPLIFIERS q TEST AND MEASUREMENT FRONT ENDS DESCRIPTION The OPA656 combines a very wideband, unity-gain stable, voltage-feedback op amp with a FET-input stage to offer an ultra high dynamic-range amplifier for ADC (Analog-to-Digital Converter) buffering and transimpedance applications. Extremely low DC errors give good precision in optical applications. The high unity-gain stable bandwidth and JFET input allows exceptional performance in high-speed, low-noise integrators. The high input impedance and low bias current provided by the FET input is supported by the ultra-low 7nV/ √Hz input voltage noise to achieve a very low integrated noise in wideband photodiode transimpedance applications. Broad transimpedance bandwidths are achievable given the OPA656’s high 230MHz gain bandwidth product. As shown below, a –3dB bandwidth of 1MHz is provided even for a high 1M Ω transimpedance gain from a 47pF source capacitance. FEATURES q 500MHz UNITY-GAIN BANDWIDTH q LOW INPUT BIAS CURRENT: 2pA q LOW OFFSET AND DRIFT: ±0.25mV, ±2µV/°C q LOW DISTORTION: 74dB SFDR at 5MHz q HIGH OUTPUT CURRENT: 70mA q LOW INPUT VOLTAGE NOISE: 7nV/ √Hz Wideband, Unity-Gain Stable, FET-Input OPERATIONAL AMPLIFIER Frequency 1M Ω TRANSIMPEDANCE BANDWIDTH 130 120 110 100 90 80 10kHz 100kHz 1MHz 5MHz 1MHz Bandwidth OPA656 Wideband Photodiode Transimpedance Amplifier (47pF) λ –V b 499k Ω 499k Ω V O 1pF OPA656 SBOS196G – DECEMBER 2001 – REVISED NOVEMBER 2008 www.ti.com Copyright © 2001-2008, 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. OPA656 SLEW VOLTAGE VS BW RATE NOISE DEVICE (V) (MHz) (V/ µS) (nV/√HZ) AMPLIFIER DESCRIPTION OPA355 +5 200 300 5.8 Unity-Gain Stable CMOS OPA655 ±5 400 290 6 Unity-Gain Stable FET-Input OPA657 ±5 1600 700 4.8 Gain of +7 Stable FET-Input OPA627 ±15 16 55 4.5 Unity-Gain Stable FET-Input THS4601 ±15 180 100 5.4 Unity-Gain Stable FET-Input RELATED OPERATIONAL AMPLIFIER PRODUCTS 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. All trademarks are the property of their respective owners. www.ti.com |
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