AD8065 Analog Devices, AD8065 Datasheet
AD8065
Specifications of AD8065
Available stocks
Related parts for AD8065
AD8065 Summary of contents
Page 1
... The AD8065/AD8066 FastFET amplifiers are voltage feedback amplifiers with FET inputs offering high performance and ease of use. The AD8065 is a single amplifier, and the AD8066 is a dual amplifier. These amplifiers are developed in the Analog Devices, Inc. proprietary XFCB process and allow exceptionally low noise operation (7.0 nV/√ ...
Page 2
... Sheet changed from Rev Rev. D. Changes to Features......................................................................... 1 Changes to Connection Diagrams ................................................ 1 Updated Ordering Guide................................................................ 5 Updated Outline Dimensions ...................................................... 22 4/03—Data Sheet changed from Rev Rev. C. Added SOIC-8 (R) for the AD8065............................................... 4 Input Protection ......................................................................... 19 Thermal Considerations............................................................ 20 Input and Output Overload Behavior ..................................... 20 Layout, Grounding, and Bypassing Considerations .................. 21 Power Supply Bypassing ............................................................ 21 Grounding ...
Page 3
... Common-Mode Rejection Ratio OUTPUT CHARACTERISTICS Output Voltage Swing Output Current Short-Circuit Current Capacitive Load Drive POWER SUPPLY Operating Range Quiescent Current per Amplifier Power Supply Rejection Ratio Conditions 0.2 V p-p (AD8065 + 0.2 V p-p (AD8066 + 0 ...
Page 4
... Common-Mode Rejection Ratio OUTPUT CHARACTERISTICS Output Voltage Swing Output Current Short-Circuit Current Capacitive Load Drive POWER SUPPLY Operating Range Quiescent Current per Amplifier Power Supply Rejection Ratio Conditions 0.2 V p-p (AD8065 + 0.2 V p-p (AD8066 + 0 ...
Page 5
... L NTSC + 150 Ω 1.0 V, SOIC package CM SOIC package MIN MAX MIN MAX (AD8065 (AD8066) O See the Theory of Operation section (SOT-23 kΩ 150 Ω p-p, SFDR ≥ ...
Page 6
... AD8065/AD8066 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Rating Supply Voltage 26.4 V Power Dissipation See Figure 3 Common-Mode Input Voltage V EE Differential Input Voltage 1.8 V Storage Temperature Range −65°C to +125°C Operating Temperature Range −40°C to +85°C Lead Temperature 300°C (Soldering, 10 sec) ESD CAUTION ESD (electrostatic discharge) sensitive device ...
Page 7
... MAXIMUM POWER DISSIPATION The maximum safe power dissipation in the AD8065/AD8066 packages is limited by the associated rise in junction temperature ( the die. The plastic encapsulating the die J locally reaches the junction temperature. At approximately 150°C, which is the glass transition temperature, the plastic changes its properties. Even temporarily exceeding this ...
Page 8
... AD8065/AD8066 TYPICAL PERFORMANCE CHARACTERISTICS Default Conditions: ± pF + –3 –6 0 FREQUENCY (MHz) Figure 4. Small Signal Frequency Response for Various Gains 200mV p + ±12V S –2 – ...
Page 9
... R = 500Ω 250Ω 500Ω 250Ω 2.2pF F –20 100 1000 /C (See Figure 43 Rev Page AD8065/AD8066 5pF 200mV p 0 100 FREQUENCY (MHz 100Ω 1kΩ ...
Page 10
... AD8065/AD8066 –30 – –50 –60 = 150 Ω –70 HD2 Ω HD2 R L –80 HD3 R –90 = 150 Ω HD3 R L –100 –110 –120 0 FREQUENCY (MHz) Figure 16. Harmonic Distortion vs. Frequency for Various Loads (See Figure 43) –30 – ±12V 1MHz – ...
Page 11
... Figure 23. Large Signal Transient Response (See Figure 42 – ±5V S 2.0V/DIV Figure 24. Output Overdrive Recovery (See Figure 44) Figure 25. Small Signal Transient Response ±5 V (See Figure 42) 50ns/DIV Figure 26. Large Signal Transient Response (See Figure 43) 100ns/DIV Rev Page AD8065/AD8066 20pF 5pF L 50mV/DIV 25ns/DIV 5µ ± ...
Page 12
... AD8065/AD8066 V = 140mV/DIV IN V – 2V OUT +0.1% –0. 2mV/DIV Figure 28. Long-Term Settling Time (See Figure 49) 0 –5 –10 –15 –20 –25 – TEMPERATURE (°C) Figure 29. Input Bias Current vs. Temperature 0.3 0 ± –0.1 –0.2 –0.3 –14 –12 –10 –8 –6 –4 – ...
Page 13
... Rev Page AD8065/AD8066 10k 100k 1M 10M FREQUENCY (Hz) V – – TEMPERATURE (°C) Figure 38. Output Saturation Voltage vs. Temperature ...
Page 14
... AD8065/AD8066 6.60 6. ±5V S 6.50 6. +5V S 6.40 6.35 6.30 6.25 –40 – TEMPERATURE (°C) Figure 40. Quiescent Supply Current vs. Temperature for Various Supply Voltages 125 V = ±12V S 120 115 110 105 100 Figure 41. Open-Loop Gain vs. Load Current for Various Supply Voltages Rev Page ±12V ...
Page 15
... LOAD Rev Page AD8065/AD8066 +V CC 4.7μF 0.1μF 2.2pF 499Ω 499Ω AD8065 249Ω 0.1μF 4.7μF –V EE Figure 44 − 4.7μF 0.1μF 24.9Ω AD8065 NETWORK ANALYZER S22 0.1μF 4.7μF –V EE Figure 45. Output Impedance FET PROBE 1kΩ ...
Page 16
... S22 V IN Rev Page p 49.9Ω 24.9Ω FET PROBE AD8065 1kΩ 0.1μF 4.7μF –V EE Figure 48. Positive PSRR +V CC 4.7μF 0.1μF 2.2pF 499Ω 976Ω AD8065 249Ω 0.1μF 49.9Ω 4.7μF –V EE Figure 49. Settling Time TO SCOPE 49.9Ω ...
Page 17
... AD8066 V IN 0.1μF 49.9Ω 4.7μF –5V DRIVE SIDE Figure 51. Crosstalk—AD8066 499Ω 1.5V AD8065 249Ω 49.9Ω 1.5V Figure 52. Single Supply Rev Page AD8065/AD8066 24.9Ω FET PROBE AD8066 1kΩ RECEIVE SIDE 1kΩ 2.2pF 499Ω 5V 4.7μF 0.1μF FET PROBE 1kΩ 1.5V ...
Page 18
... With voltage noise of 7 nV/√Hz and −88 dBc distortion for 1 MHz p-p signals, the AD8065/AD8066 are a great choice for high resolution data acquisition systems. Their low noise, sub-pA input current, precision offset, and high speed make them superb preamps for fast photodiode applications ...
Page 19
... R ⎠ G The voltage error due to I and I is minimized b– (though with the AD8065 input currents at less than 20 pA over temperature, this is likely not a concern). To include common- mode and power supply rejection effects, total V modeled Δ V Δ ...
Page 20
... SOT-23-5 (thermal resistance of 160°C/W). V temperature drift is trimmed to guarantee a OS maximum drift of 17 μV/° can change up to 0.425 mV due to warm-up effects for an AD8065/AD8066 in a SOT-23-5 package increases by a factor of 1.7 for every 10°C rise in temperature. b ...
Page 21
... Because load currents flow from the supplies as well, the ground for the load impedance should be at the same physical location as the bypass capacitor grounds. For the larger value capacitors, which are effective at lower frequencies, the current return path distance is less critical. Rev Page AD8065/AD8066 ...
Page 22
... Poor PC board layout, contaminants, and the board insulator material can create leakage currents that are much larger than the input bias current of the AD8065/AD8066. Any voltage differential between the inputs and nearby runs sets up leakage currents through the PC board insulator, for example, 1 V/100 GΩ ...
Page 23
... × − × × Rev Page AD8065/AD8066 2π 2π ...
Page 24
... V EE Figure 60. High Speed Instrumentation Amplifier VIDEO BUFFER The output current capability and speed of the AD8065 make it useful as a video buffer, shown in Figure 61. The configuration compensates for the voltage division of the signal due to the signal termination. This buffer maintains 0.1 dB flatness for signals MHz, from low amplitudes p-p (see Figure 7). Differential gain and phase have been measured to be 0.02% and 0.028° ...
Page 25
... Dimensions shown in millimeters 3.20 3.00 2.80 0.50 (0.0196) × 45° 0.25 (0.0099) PIN 1 8° 0.95 0° 1.27 (0.0500) 0.85 0.40 (0.0157) 0.75 0.15 0.00 COPLANARITY Figure 64. 8-Lead Mini Small Outline Package [MSOP] 10° 5° 0.60 0° 0.45 0.30 Rev Page AD8065/AD8066 3.20 3.00 2.80 5. 4.90 4. 0.65 BSC 1.10 MAX 8° 0.38 0.23 0° 0.22 0.08 SEATING 0.10 PLANE COMPLIANT TO JEDEC STANDARDS MO-187-AA (RM-8) Dimensions shown in millimeters 0.80 ...
Page 26
... AD8065ARZ-REEL −40°C to +85°C 1 AD8065ARZ-REEL7 −40°C to +85°C AD8065ART-REEL −40°C to +85°C AD8065ART-R2 −40°C to +85°C AD8065ART-REEL7 −40°C to +85°C 2 AD8065ARTZ-R2 −40°C to +85°C 2 AD8065ARTZ-REEL −40°C to +85°C 2 AD8065ARTZ-REEL7 −40°C to +85°C AD8066AR − ...
Page 27
... NOTES Rev Page AD8065/AD8066 ...
Page 28
... AD8065/AD8066 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C02916-0-1/06(G) Rev Page ...