OPA646U BURR-BROWN [Burr-Brown Corporation], OPA646U Datasheet
![no-image](/images/no-image-200.jpg)
OPA646U
Available stocks
Related parts for OPA646U
OPA646U Summary of contents
Page 1
Low Power, Wide Bandwidth OPERATIONAL AMPLIFIER FEATURES LOW POWER: 55mW UNITY-GAIN BANDWIDTH: 650MHz UNITY-GAIN STABLE FAST 12-BIT SETTLING: 15ns (0.01%) LOW INPUT BIAS CURRENT LOW HARMONICS: –82dBc at 5MHz LOW DIFFERENTIAL GAIN/PHASE ERRORS: 0.025%/0.08 APPLICATIONS TELECOMMUNICATIONS MEDICAL ...
Page 2
... Specification Thermal Resistance U, UB 8-Pin SO-8 Specification same as OPA646U. NOTE: (1) Slew rate is rate of change from 10% to 90% of output voltage step. (2) Recovery time to linear operation from the input overdrive midpoint. ® OPA646 = 402 and all four power supply pins are used, unless otherwise noted. R ...
Page 3
... PACKAGE /ORDERING INFORMATION PRODUCT PACKAGE OPA646U, UB SO-8 Surface Mount NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) The “B” grade of the SO-8 will be marked with a “B” by pin 8. ...
Page 4
TYPICAL PERFORMANCE CURVES + 5V 100 , C = 2pF PSR, AND CMR vs TEMPERATURE –75 –50 –25 ...
Page 5
TYPICAL PERFORMANCE CURVES + 5V 100 , C = 2pF RECOMMENDED ISOLATION RESISTANCE vs CAPACITIVE LOAD 100 Capacitive ...
Page 6
TYPICAL PERFORMANCE CURVES + 5V 100 , C = 2pF CLOSED-LOOP SMALL SIGNAL BANDWIDTH Gain 14 11 Closed-Loop 8 Phase ...
Page 7
TYPICAL PERFORMANCE CURVES + 5V 100 , C = 2pF 5MHz HARMONIC DISTORTION vs OUTPUT SWING ( 100 ) L –60 –70 ...
Page 8
... Surface-mount components (chip resistors, capacitors, etc.) have low lead inductance and are therefore strongly recommended. Circuits using all surface-mount components with the OPA646U (SO-8 package) will offer the best AC performance. 6) Avoid overloading the output. Remember that output current must be provided by the amplifier to drive its own feedback network as well as to drive its load ...
Page 9
The OPA646 incor- porates on-chip ESD protection diodes as shown in Figure 2. This eliminates the need for the user to add external protec- tion diodes, which can add capacitance and degrade AC performance. All ...
Page 10
CAPACITIVE LOADS The OPA646’s output stage has been optimized to drive low resistive loads. Capacitive loads, however, will decrease the amplifier’s phase margin which may cause high frequency peaking or oscillations. Capacitive loads greater than 10pF should be buffered by ...
Page 11
DISTORTION The OPA646’s harmonic distortion characteristics into a 100 load are shown vs frequency and power output in the Typical Performance Curves. Distortion can be significantly improved by increasing the load resistance as illustrated in Figure 6. Remember to include ...
Page 12
APPLICATIONS 390 Video Input FIGURE 8. Low Power Video Amplifier. OPA646 C 2 1000pF 158 15.8k OPA646 1000pF 20kHz at –3dB Q FIGURE 9. High-Q 1MHz Bandpass Filter. ...
Page 13
R 806 G FIGURE 12. Wideband, Fast-Settling Instrumentation Amplifier. 402 402 Differential OPA646 Input 402 402 FIGURE 13. Unity Gain Difference Amplifier OPA646 499 499 499 FIGURE 14. ADC Input Buffer Amplifier (G = +2V/V). OPA646 R 402 ...