OPA686N/250

OPA686N/250 FEATURES

l HIGH BANDWIDTH: 250MHz (G = +10)l LOW INPUT VOLTAGE NOISE: 1.3nV/(cid:214) Hzl VERY LOW DISTORTION: –90dBc (5MHz)l HIGH SLEW RATE: 600V/m sl HIGH DC ACCURACYl LOW SUPPLY CURRENT: 12mAl HIGH GAIN BANDWIDTH PRODUCT:1600MHzl STABLE FOR GAINS ‡ 7

OPA686N/250 DESCRIPTION

The OPA686 combines very high gain bandwidth and largesignal performance with very low input voltage noise whiledissipating a low 12mA supply current. The classical differen-tial input stage, along with two stages of forward gain and ahigh power output stage, combine to make the OPA686 anexceptionally low distortion amplifier with excellent DC accu-racy and output drive. The voltage feedback architecture allowsall standard op amp applications to be implemented with veryhigh performance.The combination of low input voltage and current noise, alongwith a 1.6GHz gain bandwidth product, make the OPA686 anideal amplifier for wideband transimpedance stages. As a volt-age gain stage, the OPA686 is optimized for a flat response at again of +10 and is guaranteed stable down to a noise gain of +7.

OPA686N/250 APPLICATIONS

l HIGH DYNAMIC RANGE ADC PREAMPl LOW NOISE, WIDEBAND,TRANSIMPEDANCE AMPLIFIERl WIDEBAND, HIGH GAIN AMPLIFIERl LOW NOISE DIFFERENTIAL RECEIVERl VDSL LINE RECEIVERl ULTRASOUND CHANNEL AMPLIFIERl IMPROVED REPLACEMENT FOR THECLC425A new external compensation technique can be used to give avery flat frequency response below the minimum stable gainfor the OPA686, further improving its already exceptionaldistortion performance. Using this compensation makes theOPA686 one of the premier 12- to 14-bit analog-to-digitalconverter input drivers. The supply current for the OPA686 isprecisely trimmed to 12.4mA at +25(cid:176) C. This, along withcarefully defined supply current tempcos in the input andoutput stages, combine to provide exceptional performanceover the full specified temperature range.OPA686 RELATED PRODUCTSHigh Gain, 20MHz Transimpedance AmplifierSBOS0631OPA686