OPA681N BURR-BROWN [Burr-Brown Corporation], OPA681N Datasheet
![no-image](/images/no-image-200.jpg)
OPA681N
Available stocks
Related parts for OPA681N
OPA681N Summary of contents
Page 1
OPERATIONAL AMPLIFIER With Disable FEATURES WIDEBAND +5V OPERATION: 225MHz (G = +2) UNITY GAIN STABLE: 280MHz ( HIGH OUTPUT CURRENT: 150mA OUTPUT VOLTAGE SWING: 4.0V HIGH SLEW RATE: 2100V/ s LOW dG/d : .001%/.01 LOW SUPPLY CURRENT: ...
Page 2
SPECIFICATIONS 402 , R = 100 , and (Figure 1 for AC performance only), unless otherwise noted PARAMETER AC PERFORMANCE (Figure 1) Small-Signal Bandwidth (V = 0.5Vp-p) O Bandwidth for 0.1dB Gain ...
Page 3
SPECIFICATIONS 499 , R = 100 to V /2, and (Figure 2 for AC performance only), unless otherwise noted PARAMETER AC PERFORMANCE (Figure 2) Small-Signal Bandwidth (V = 0.5Vp-p) O Bandwidth ...
Page 4
... NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are available only as Tape and Reel in the quantity indicated after the slash (e.g. /2K5 indicates 2500 devices per reel). Ordering 3000 pieces of the OPA681N/3K will get a single 3000-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of the Burr-Brown IC Data Book. The information provided herein is believed to be reliable ...
Page 5
TYPICAL PERFORMANCE CURVES + 402 , and R = 100 , unless otherwise noted (see Figure 1 SMALL-SIGNAL FREQUENCY RESPONSE + 453 –1 –2 –3 ...
Page 6
TYPICAL PERFORMANCE CURVES + 402 , and R = 100 , unless otherwise noted (see Figure 1 5MHz 2ND HARMONIC DISTORTION vs OUTPUT VOLTAGE –60 – 100 L – ...
Page 7
TYPICAL PERFORMANCE CURVES + 402 , and R = 100 , unless otherwise noted (see Figure 1 2ND HARMONIC DISTORTION vs FREQUENCY – 2Vp +10 ...
Page 8
TYPICAL PERFORMANCE CURVES + 402 , and R = 100 , unless otherwise noted (see Figure 1 CMRR AND PSRR vs FREQUENCY 70 +PSRR 65 –PSRR 60 55 CMRR ...
Page 9
TYPICAL PERFORMANCE CURVES + 499 , and R = 100 to +2.5V, unless otherwise noted (see Figure 2 SMALL-SIGNAL FREQUENCY RESPONSE + –1 –2 –3 G ...
Page 10
TYPICAL PERFORMANCE CURVES + 499 , and R = 100 to +2.5V, unless otherwise noted (see Figure 2 2ND HARMONIC DISTORTION vs FREQUENCY – 2Vp 100 to 2.5V ...
Page 11
APPLICATIONS INFORMATION WIDEBAND CURRENT FEEDBACK OPERATION The OPA681 gives the exceptional AC performance of a wideband current feedback op amp with a highly linear, high power output stage. Requiring only 6mA quiescent current, the OPA681 will swing to within 1V ...
Page 12
SINGLE-SUPPLY A/D CONVERTER INTERFACE Most modern, high performance A/D converters (such as the Burr-Brown ADS8xx and ADS9xx series) operate on a single +5V (or lower) power supply. It has been a consider- able challenge for single-supply op amps to deliver ...
Page 13
V DIS Video 1 Video 2 FIGURE 4. Two-Channel Video Multiplexer. The section on Disable Operation shows the turn-on and turn-off switching glitches using a grounded input for a single channel is typically less than 50mV. Where two outputs ...
Page 14
... PACKAGE NUMBER OPA681P 8-Pin DIP DEM-OPA68xP OPA681U 8-Pin SO-8 DEM-OPA68xU OPA681N 6-Lead SOT23-6 DEM-OPA68xN Contact the Burr-Brown applications support line to request any of these boards. MACROMODELS AND APPLICATIONS SUPPORT Computer simulation of circuit performance using SPICE is often useful when analyzing the performance of analog circuits and systems. This is particularly true for video and RF amplifier circuits where parasitic capacitance and induc- tance can have a major effect on circuit performance ...
Page 15
A current feedback op amp senses an error current in the inverting node (as opposed to a differential input error voltage for a voltage feedback op amp) and passes this on to the output through an internal frequency dependent transimpedance ...
Page 16
OPA680, since the feedback resistor is the compensation element for a current feedback op amp. Wideband inverting operation (and especially summing) is particularly suited to the OPA681. Figure 8 shows a typical inverting ...
Page 17
A 5 resistor in each power supply lead will limit the internal power dissipation to less than 1W for an output short circuit while decreasing the available output voltage swing only 0.5V for up ...
Page 18
In this model, all noise terms are taken to be noise voltage or current density terms in either nV pA/ Hz. The total output spot noise voltage can be computed as the square root of the sum ...
Page 19
... Note that it is the power in the output stage and not in the load that determines internal power dissipation worst-case example, compute the maximum T OPA681N (SOT23-6 package) in the circuit of Figure 1 operating at the maximum specified ambient temperature of +85 C and driving a grounded 20 = 10V x 7.2mA + 5 ...
Page 20
This puts a high current through a large internal voltage drop in ...
Page 21
INPUT AND ESD PROTECTION The OPA681 is built using a very high speed complemen- tary bipolar process. The internal junction breakdown volt- ages are relatively low for these very small geometry de- vices. These breakdowns are reflected in the Absolute ...