AD8620 Analog Devices, AD8620 Datasheet
AD8620
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AD8620 Summary of contents
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... The AD8610/ AD8620 swing to within 1 the supplies even with a 1 kΩ load, maximizing dynamic range even with limited supply volt- ages. Outputs slew at 50 V/μs in either inverting or noninverting gain configurations, and settle to 0 ...
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... Absolute Maximum Ratings ............................................................5 Typical Performance Characteristics ..............................................6 Theory of Operation ...................................................................... 13 Functional Description.............................................................. 13 Outline Dimensions ....................................................................... 22 Ordering Guide .......................................................................... 22 5/02—Rev Rev. B Addition of part number AD8620 ...................................Universal Addition of 8-Lead SOIC (R-8 Suffix) Drawing............................1 Changes to General Description .....................................................1 Additions to Specifications ..............................................................2 Change to Electrical Specifications.................................................3 Additions to Ordering Guide...........................................................4 Replace TPC 29..................................................................................8 Add Channel Separation Test Circuit Figure.................................9 Add Channel Separation Graph ...
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... Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift (AD8610B) Offset Voltage Drift (AD8620B) Offset Voltage Drift (AD8610A/AD8620A) OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Current POWER SUPPLY Power Supply Rejection Ratio ...
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... Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift (AD8610B) Offset Voltage Drift (AD8620B) Offset Voltage Drift (AD8610A/AD8620A) OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Current Short Circuit Current POWER SUPPLY ...
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... Package Type 8-Lead MSOP (RM) –65°C to +150°C 8-Lead SOIC (R) 300°C 1 θ is specified for worst-case conditions; that is, θ JA soldered in circuit board for surface-mount packages. ESD CAUTION Rev Page AD8610/AD8620 1 θ θ Unit JA JC 190 44 °C/W 158 43 °C/W ...
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... AD8610/AD8620 TYPICAL PERFORMANCE CHARACTERISTICS –250 –150 –50 50 INPUT OFFSET VOLTAGE (µV) Figure 3. Input Offset Voltage at ±13 V 600 400 200 0 –200 –400 –600 –40 25 TEMPERATURE (°C) Figure 4. Input Offset Voltage vs. Temperature at ±13 V (300 Amplifiers – ...
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... S 4.20 4.15 4.10 4.05 4.00 3.95 125 Figure 13. Output Voltage High vs. Temperature at ±5 V –3.95 –4.00 –4.05 –4.10 –4.15 –4.20 –4.25 –4.30 125 Figure 14. Output Voltage Low vs. Temperature at ±5 V Rev Page AD8610/AD8620 V = ±13V S 1k 10k 100k 1M 10M RESISTANCE LOAD (Ω ± 1kΩ L – 125 TEMPERATURE (° ± ...
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... AD8610/AD8620 12. ±13V 1kΩ L 12.00 11.95 11.90 11.85 11.80 –40 25 TEMPERATURE (°C) Figure 15. Output Voltage High vs. Temperature at ±13 V –11.80 –11.85 –11.90 –11.95 –12.00 –12.05 –40 25 TEMPERATURE (°C) Figure 16. Output Voltage Low vs. Temperature at ±13 V 120 V = ±13V S 100 R = 1kΩ L MARKER AT 27MHz 80 φ 20pF –20 – ...
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... V = ±13V S 120 100 10M 60M ± 10M 60M 125 Figure 26. Negative Overvoltage Recovery Rev Page AD8610/AD8620 V = ±13V S 100 1k 10k 100k 1M 10M FREQUENCY (Hz) Figure 24. CMRR vs. Frequency V = ± –3 00mV p – 10k Ω ...
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... AD8610/AD8620 TIME (1s/DIV) Figure 27. 0 Input Voltage Noise 1000 100 100 1k FREQUENCY (Hz) Figure 28. Input Voltage Noise Density vs. Frequency 100 GAIN = +100 GAIN = + 10k 100k 1M FREQUENCY (Hz) Figure 29. Z vs. Frequency OUT V = ±13V S V p-p = 1.8µV IN 3000 V = ± ...
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... 20pF L Figure 37. − ±13V S p-p = 20V – 2kΩ 20pF L Figure 38. Large Signal Response at G =−1 Rev Page AD8610/AD8620 V = ±13V S V p-p = 20V 2kΩ 20pF L TIME (400ns/DIV) TIME (400ns/DIV) TIME (1µs/DIV) ...
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... AD8610/AD8620 TIME (400ns/DIV) Figure 39. + − ±13V S V p-p = 20V – 2kΩ 55V /µ 20pF L Rev Page ±13V S V p-p = 20V – 2kΩ 50V /µ 20pF L TIME (400ns/DIV) Figure 40. − −1 ...
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... The AD8610/AD8620 are unconditionally stable in all gains, even with capacitive loads well in excess of 1 nF. The AD8610/ AD8620B grade achieves less than 100 μV of offset and 1 μV/°C of offset drift, numbers usually associated with very high precision bipolar input amplifiers. The AD8610 is offered in the tiny 8-lead MSOP as well as narrow 8-lead SOIC surface-mount packages and is fully specified with supply voltages from ± ...
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... Heavy capacitive loads also increase the amount of overshoot and ringing at the output. Figure 47 and Figure 48 show the AD8610/AD8620 and the OPA627 in a noninverting gain of +2 driving 2 μF of capacitance load. The ringing on the OPA627 is much larger in magnitude and continues 10 times longer than the AD8610/AD8620 ...
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... –1 Figure 52. –Slew Rate of OPA627 in Unity Gain of –1 The AD8610/AD8620 have a very fast slew rate of 60 V/μs even when configured in a noninverting gain of +1. This is the toughest condition to impose on any amplifier since the input common- mode capacitance of the amplifier generally makes its SR appear worse ...
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... This 10 kΩ allows input voltages more than 5 V beyond either power supply. Thermal noise generated by the resistor adds 7.5 nV/√Hz to the noise of the AD8610/AD8620. For the AD8610/ AD8620, differential voltages equal to the supply voltage do not cause any problem (see Figure 55). In this context, please note that ...
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... The AD8610/AD8620 have a very fast settling time, even to a very tight error band, as can be seen from Figure 60. The AD8610/ AD8620 are configured in an inverting gain of +1 with 2 kΩ input and feedback resistors. The output is monitored with MΩ, 11.2 pF scope probe. ...
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... V. Figure 64 and Figure 65 compare the load current vs. output voltage of AD8610/ AD8620 and OPA627 0.1 0.00001 Figure 64. AD8610/AD8620 Dropout from ±13 V vs. Load Current 1500 2000 10 1 0.1 0.00001 Figure 65. OPA627 Dropout from ±15 V vs. Load Current ...
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... The combination of low noise, low input bias current, low input offset voltage, and low temperature drift make the AD8610/ AD8620 a perfect solution for programmable gain amplifiers. PGAs are often used immediately after sensors to increase the dynamic range of the measurement circuit. Historically, the large on resistance of switches (combined with the large I of amplifiers) created a large dc offset in PGAs ...
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... Figure 69 shows the AD8610 configured as a second-order, Butterworth, low-pass filter. With the values as shown, the corner frequency of the filter is 1 MHz. The wide bandwidth of the V+ AD8610/AD8620 allows a corner frequency up to tens of mega hertz. The following equations can be used for component 7 selection: ...
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... High Speed, Low Noise Differential Driver The AD8620 is a perfect candidate as a low noise differential driver for many popular ADCs. There are also other applica tions (such as balanced lines) that require differential drivers. The circuit of Figure unique line driver widely used in industrial applications. With ± ...
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... AD8620ARZ-REEL –40°C to +125°C AD8620ARZ-REEL7 1 –40°C to +125°C AD8620BR –40°C to +125°C AD8620BR-REEL –40°C to +125°C AD8620BR-REEL7 –40°C to +125°C 1 AD8620BRZ –40°C to +125°C 1 AD8620BRZ-REEL –40°C to +125°C 1 AD8620BRZ-REEL7 –40°C to +125° Pb-free part, # denotes lead-free product can be top or bottom marked ...
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... NOTES Rev Page AD8610/AD8620 ...
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... AD8610/AD8620 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C02730-0-11/06(E) Rev Page ...