AD8390 Analog Devices, AD8390 Datasheet
AD8390
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AD8390 Summary of contents
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... High current differential amplifiers GENERAL DESCRIPTION The AD8390 is a high output current, low power consumption differential amplifier particularly well suited for the central office (CO) driver interface in digital subscriber line systems such as ADSL and ADSL2+. While in full bias operation, the driver is capable of providing 24 ...
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... AD8390 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 Typical Thermal Properties............................................................. 5 ESD Caution.................................................................................. 5 Typical Performance Characteristics ............................................. 6 Theory of Operation ........................................................................ 9 Applications....................................................................................... 9 Circuit Definitions ....................................................................... 9 Analyzing a Basic Application Circuit....................................... 9 Setting the Closed-Loop Gain .................................................... 9 Calculating Input Impedance ..................................................... 9 REVISION HISTORY 9/04–Data Sheet Changed from Rev Rev. C Change to Ordering Guide............................................................ 16 2/04– ...
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... ADJ (0,1 ADJ (0,0 ADJ ∆V /∆V , ∆V = ± midsupply OS, OCM ∆V /∆V OUT,CM OCM Rev Page AD8390 1, 2 Min Typ Max Unit 40 60 MHz 25 40 MHz 0.1 dB 300 V/µs –82 dBc –91 dBc –70 dBc –65 ...
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... AD8390 V = ± + 100 Ω 10, PWDN = (1,1 Table 2. Parameter DYNAMIC PERFORMANCE –3 dB Small Signal Bandwidth Large Signal Bandwidth Peaking Slew Rate NOISE/DISTORTION PERFORMANCE Second Harmonic Distortion Third Harmonic Distortion Voltage Noise (RTI) Input Current Noise INPUT CHARACTERISTICS RTI Offset Voltage (V ...
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... Paddle soldered to board 300°C Nine thermal vias in pad R = 10kΩ F 49.9Ω 1kΩ AD8390 R = 100Ω OUT, 1kΩ G 49.9Ω 10kΩ F Figure 3. Basic Test Circuit Rev Page AD8390 Typical Thermal Resistance (θ 30.4°C/W 44.3°C/W ...
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... AD8390 TYPICAL PERFORMANCE CHARACTERISTICS Default Conditions ± + 25°C, unless otherwise noted. See Figure PWDN(0,1 PWDN(1,0); I ADJ EE PWDN(1,1 PWDN(0,1 ADJ 10 5 PWDN(1,0 ADJ 0 PWDN(1,1 ADJ –5 – 100 FREQUENCY (MHz) Figure 4. Small Signal Frequency Response; ...
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... PWDN(0,1); I –60 –65 – ADJ = NC –75 ADJ = V EE – –85 –90 10 0.1 Figure 15. Total Harmonic Distortion vs. Frequency; Rev Page AD8390 CREST FACTOR = 5.4 PWDN(0,1 ADJ EE PWDN(0,1 ADJ PWDN(1,0 ADJ EE PWDN(1,1 ADJ EE PWDN(1,1 ADJ PWDN(1,0 ...
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... AD8390 PWDN(1, PWDN(1,0) 4 PWDN(0, 100 1k 10k I SERIES RESISTOR (Ω) ADJ Figure 16. Quiescent Current vs. I Resistor; V ADJ 3 PWDN PINS 2 1 OUTPUT 0 –1 –2 –3 –0.2 –0.1 0 0.1 0.2 0.3 0.4 0.5 TIME (µs) Figure 17. Power-Up Time; PWDN = (0,0) to PWDN = (1,1) 100 100 1k 10k ...
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... The output common-mode voltage is defined as V OUT ANALYZING A BASIC APPLICATION CIRCUIT The AD8390 uses high open-loop gain and negative feedback to force its differential and common-mode output voltages in such a way as to minimize the differential and common-mode error voltages. The differential error voltage is defined as the voltage is internally between the differential inputs +IN and – ...
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... OFF state, such as multiplexing. I Pin ADJ The I feature offers users significant flexibility in setting the ADJ bias level of the AD8390 by allowing for fine tuning of the bias setting. Use of the I feature is not required for operation of ADJ the AD8390. When I ADJ power modes is set to approximately 10 mA, 6.7 mA, and 3 ...
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... The line impedance, turns ratio, and k factor specify the output voltage and current requirements from the AD8390. To accom- modate higher crest factors or lower supply rails, the turns ratio, N, may have to be increased. Since higher turns ratios and smaller ...
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... LAYOUT, GROUNDING, AND BYPASSING The first layout requirement is for a good solid ground plane that covers as much of the board area around the AD8390 as possible. The only exception to this is that the two input pins should be kept a few millimeters from the ground plane, and ground should be removed from inner layers and the opposite side of the board under the input traces ...
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... Temperature Range AD8390ACP-R2 –40°C to +85°C AD8390ACP-REEL –40°C to +85°C AD8390ACP-REEL7 –40°C to +85°C AD8390ACP-EVAL AD8390ARC –40°C to +85°C AD8390ARC-REEL –40°C to +85°C AD8390ARC-REEL7 –40°C to +85°C AD8390ARC-EVAL 4.0 0.60 MAX BSC SQ 0.60 MAX 13 12 0.65 BSC TOP 3.75 BOTTOM ...
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... AD8390 NOTES Rev Page ...
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... NOTES Rev Page AD8390 ...
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... AD8390 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C02694–0–9/04(C) Rev Page ...