Texas Instruments

Description

The OPA847 combines very high gain bandwidth and large signal performance with an ultra-low input noise voltage. (0.85nV/ Hz) while using only 18mA supply current. Where power saving is critical, the OPA847 also includes an op- tional power shutdown pin that, when pulled low, disables the amplifier and decreases performance, whereas the OPA683 requires only 0.94mA. Why then would we use the OPA847 ? This amplifier, with its much higher quiescent current, also offers many specifications that the OPA683 cannot achieve such as very low noise and (for a high-speed amplifier) relatively good dc precision. On the other hand, the Recommended op amps: OPA847 , OPA695, THS3201,. THS3202. Availability: Today! DATA. SHEETS. ADS5500. Get datasheets, app brochure and EVMs at: www.ti.com/ads5500. ADS5500 Block Diagram. EVALUATION. MODULE. Key Applications Include:* Industrial, Test and. Measurement: Extends signal analysis. All three amplifiers OPA847 , OPA846 and OPA843 are bipolar amplifiers. Finally, the OPA657 is a 1.65GHz GBP device with a 4.8nV/ Hz input voltage noise. Unlike the other three devices, the OPA657 is a FET input amplifier. Figure 3 shows an example of achievable bandwidth versus transimpedance gain for a 10pF 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 .