AD8022 Analog Devices, AD8022 Datasheet
AD8022
Specifications of AD8022
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AD8022 Summary of contents
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... AD8022 ideal as the receive channel front end to an ADSL, VDSL, or proprietary xDSL transceiver design xDSL line interface circuit, the AD8022’s op amps can be configured as the differential receiver from the line transformer or as independent active filters. ...
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... AD8022 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 Maximum Power Dissipation ..................................................... 5 ESD Caution.................................................................................. 5 Typical Performance Characteristics ............................................. 6 Theory of Operation ...................................................................... 12 Applications..................................................................................... 13 REVISION HISTORY 5/05—Rev Rev. B Changes to Format .............................................................Universal Deleted Evaluation Boards Section.............................................. 14 Deleted Generating DMT Section................................................ 14 Changes to Ordering Guide.......................................................... 16 Updated Outline Dimensions....................................................... 16 9/02—Rev Rev. A Changes to Features ...
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... R = 500 Ω kΩ + 150 Ω, dc error = Ω, < peaking MIN MAX V = ±5V to ± Rev Page AD8022 Min Typ Max 110 130 200 −95 −100 −67.2 −66 2.5 1.2 −1.5 ±6 ± ...
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... AD8022 At 25° ±2 500 Ω + Table 2. Parameter DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth Bandwidth for 0.1 dB Flatness 1 Large Signal Bandwidth Slew Rate Rise and Fall Time Settling Time 0.1% Overdrive Recovery Time NOISE/DISTORTION PERFORMANCE Distortion Second Harmonic Third Harmonic ...
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... MAXIMUM POWER DISSIPATION The maximum power that can be safely dissipated by the AD8022 is limited by the associated rise in junction temperature. The maximum safe junction temperature for plastic encapsulated devices is determined by the glass transition temperature of the plastic, approximately 150°C. ...
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... AD8022 TYPICAL PERFORMANCE CHARACTERISTICS 50Ω OUT 50Ω 50Ω – –2 –3 –4 –5 0 FREQUENCY (MHz) Figure 4. Frequency Response 500Ω 0.3 L 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 –0.6 100k ...
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... 2.00V 100ns 2.00V Figure 14. Noninverting Large Signal Pulse Response 500 Ω ± + Ω 1.00V 100ns 1.00V Figure 15. Noninverting Large Signal Pulse Response 500 Ω ±2 + Ω AD8022 INPUT OUTPUT INPUT OUTPUT INPUT OUTPUT ...
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... AD8022 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0 TIME (ns) Figure 16. Settling Time to 0.1%, V Step Size = +2, R 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0 TIME (ns) Figure 17. Settling Time to 0.1 ±2.5 V, Step Size = 500 Ω NEGATIVE EDGE ...
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... Figure 26. Multitone Power Ratio ± 500 Ω Full Rate ADSL (DMT), Downstream –69.0dBc FREQUENCY (kHz) Figure 27. Multitone Power Ratio ± 500 Ω Full Rate ADSL (DMT), Upstream AD8022 110.4 111.4 112.4 = 500 Ω, 557.3 558.3 559.3 110.4 111.4 112.4 ...
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... AD8022 0 SIDE A –0.5 SIDE B SIDE A –1.0 SIDE B –1.5 –2.0 –2.5 –60 –40 – TEMPERATURE ( ° C) Figure 28. Voltage Offset vs. Temperature 4.5 4.0 3 ±12V S 3.0 2 ±2.5V S 2.0 1.5 1.0 0.5 0 –60 –40 – TEMPERATURE (°C) Figure 29. Bias Current vs. Temperature 4 1kΩ 1kΩ OUT 1kΩ ...
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... V Figure 36. Output-to-Output Crosstalk vs. Frequency 100 31 10 3.16 1 0.316 0.1 0.0316 30k 10M 100M Figure 37. Output Impedance vs. Frequency ± Rev Page AD8022 SIDE A OUT SIDE B OUT 1M 10M FREQUENCY (Hz) = ±2 100k 1M 10M 100M FREQUENCY (Hz) = ± 100M 500M ...
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... Figure 38. Simplified Schematic As shown in Figure 38, the AD8022 input stage consists of an NPN differential pair in which each transistor operates a 300 μA collector current. This gives the input devices a high transconductance and therefore gives the AD8022 a low input noise of 2.5 nV/√Hz @ 100 kHz. The input stage drives a folded cascode that consists of a pair of PNP transistors ...
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... Figure 39. ADSL DMT SNR vs. Bits/Tone POWER SUPPLY AND DECOUPLING The AD8022 should be powered with a good quality (that is, low noise) dual supply of ±12 V for the best overall performance. The AD8022 circuit also functions at voltages lower than ±12 V. Careful attention must be paid to decoupling the power supply pins. A pair of 10 μ ...
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... AD8022 Figure 40. DMT Signal Generator Schematic Rev Page ...
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... AD8022 4 parallel, although not necessarily as close, in order to supply current for fast, large signal changes at the AD8022 output. Signal lines connecting the feedback and gain resistors should be as short as possible, minimizing the inductance and stray capacitance associated with these traces. Locate termination resistors and loads as close as possible to the input(s) and output, respectively ...
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... AD8022ARZ-REEL −40°C to +85°C 1 AD8022ARZ-REEL7 −40°C to +85°C AD8022ARM −40°C to +85°C AD8022ARM-REEL −40°C to +85°C AD8022ARM-REEL7 −40°C to +85°C 1 AD8022ARMZ −40°C to +85°C AD8022ARMZ-REEL 1 −40°C to +85°C 1 AD8022ARMZ-REEL7 −40°C to +85° Pb-free part ...