ADA4891-4 Analog Devices, ADA4891-4 Datasheet
ADA4891-4
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ADA4891-4 Summary of contents
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... Contact image sensor and buffers GENERAL DESCRIPTION The ADA4891-1 (single), ADA4891-2 (dual), ADA4891-3 (triple), and ADA4891-4 (quad) are CMOS, high speed amplifiers that offer high performance at a low cost. The amplifiers feature true single-supply capability, with an input voltage range that extends 300 mV below the negative rail ...
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... REVISION HISTORY 9/10—Rev Rev. C Changes to Figure 23 and Figure 24............................................... 9 7/10—Rev Rev. B Added ADA4891-3 and ADA4891-4 ...............................Universal Added 14-Lead SOIC and 14-Lead TSSOP Packages....Universal Deleted Figure 4; Renumbered Figures Sequentially................... 1 Changes to Features Section and General Description Section . 1 Added Figure 4 and Figure 5........................................................... 1 Changes to Table 1 ...
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... kΩ to 2.5 V, unless otherwise noted. All specifications are for the ADA4891-1, ADA4891-2, ADA4891-3, and ADA4891-4, unless otherwise noted. For the ADA4891-1 and ADA4891-2, R unless otherwise noted. Table 1. Parameter DYNAMIC PERFORMANCE −3 dB Small-Signal Bandwidth Bandwidth for 0.1 dB Gain Flatness ...
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... kΩ to 1.5 V, unless otherwise noted. All specifications are for the ADA4891-1, ADA4891-2, ADA4891-3, and ADA4891-4, unless otherwise noted. For the ADA4891-1 and ADA4891-2, R unless otherwise noted. Table 2. Parameter DYNAMIC PERFORMANCE −3 dB Small-Signal Bandwidth Bandwidth for 0.1 dB Gain Flatness ...
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... POWER SUPPLY Operating Range Quiescent Current per Amplifier Supply Current When Powered Down Power Supply Rejection Ratio (PSRR) Positive PSRR Negative PSRR OPERATING TEMPERATURE RANGE ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 Test Conditions/Comments kΩ 150 Ω THD with 1 MHz, V ...
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... MAXIMUM POWER DISSIPATION The maximum power that can be safely dissipated by the ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 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° ...
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... TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise noted, all plots are characterized for the ADA4891-1, ADA4891-2, ADA4891-3, and ADA4891-4. For the ADA4891-1 and ADA4891-2, the typical R value is 604 Ω. For the ADA4891-3 and ADA4891-4, the typical –1 –2 –3 – +10 – ...
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... F –4 –5 –6 – – 150Ω p-p –9 OUT R = 453Ω F –10 0 100 FREQUENCY (MHz) Figure 18. Large-Signal Frequency Response vs. Gain, V ADA4891-3/ADA4891-4 –40° 100 G = – 453Ω 0Ω ...
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... p-p OUT OUT p-p OUT 453Ω 150Ω 100 FREQUENCY (MHz) ADA4891-3/ADA4891 1kΩ p-p OUT THIRD HARMONIC SECOND HARMONIC SECOND HARMONIC +V = +1. 50Ω –V = –1.1V S ...
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... MODULATING RAMP LEVEL (IRE) Figure 29. Differential Gain and Phase Errors 47pF 22pF 10pF 0pF 150Ω 200mV p-p OUT 0 100 FREQUENCY (MHz) Figure 30. Small-Signal Frequency Response vs. C ADA4891-3/ADA4891-4 1M 10M ...
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... S 0 –100 50mV/DIV Figure 32. Small-Signal Step Response 1kΩ 150Ω –1 0.5V/DIV Figure 33. Large-Signal Step Response, V ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 100k 10k 1k 100 10 1 100 0.01 Figure 34. Closed-Loop Output Impedance vs. Frequency, Part Disabled 1 200mV p-p OUT R = 1kΩ ...
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... ADA4891-1/ADA4891-2/ADA4891-3/ADA4891 150Ω p-p OUT 0.10 0 –0.10 –0.20 –0. TIME (ns) Figure 37. Short-Term Settling Time to 0.1% 3 INPUT 2 OUTPUT 1 0 1V/DIV –1 Figure 38. Input Overdrive Recovery from Positive Rail 3 OUTPUT 2 1 INPUT 0 –1 –2 1V/DIV –3 Figure 39 ...
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... OUT –20 –30 –40 –50 –60 –70 –80 –90 –100 0 100 FREQUENCY (MHz) Figure 45. All-Hostile Crosstalk (Output-to-Output) vs. Frequency ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 0.1 10 100 Figure 46. Forward Isolation vs. Frequency (ADA4891-3 Only) 1 ...
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... ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.7 3.0 3.3 3.6 3.9 SUPPLY VOLTAGE (V) Figure 49. Supply Current per Amplifier vs. Supply Voltage 4.2 4.5 4.8 Rev Page ...
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... T bandwidth, slew rate, and peaking of the ADA4891-1/ADA4891-2/ is ADA4891-3/ADA4891-4. Note that as the gain increases, the T small-signal bandwidth decreases expected from the gain bandwidth product relationship. In addition, the phase margin improves with higher gains, and the amplifier becomes more stable ...
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... ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 Table 6. Recommended Component Values and Effect of Gain on ADA4891-3/ADA4891-4 Performance (R Feedback Network Values Gain R (Ω) R (Ω −1 453 453 +1 0 Open +2 453 453 +5 453 90.6 +10 453 45.3 EFFECT 0.1 dB GAIN FLATNESS F Gain flatness is an important specification in video applications. ...
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... ADA4891-1/ADA4891-2 100 0 –100 50mV/DIV Figure 56. 200 mV Step Response, C ADA4891-1/ADA4891-2 ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 These four methods minimize the output capacitive loading effect. • Reducing the output resistive load. This pushes the pole C = 0pF F further away and, therefore, improves the phase margin. ...
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... ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 TERMINATING UNUSED AMPLIFIERS Terminating unused amplifiers in a multiamplifier package is an important step in ensuring proper operation of the functional amplifier. Unterminated amplifiers can oscillate and draw excessive power. The recommended procedure for terminating unused amplifiers is to connect any unused amplifiers in a unity-gain configuration and to connect the noninverting input to midsupply voltage ...
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... FREQUENCY (MHz) Figure 63. Video Reconstruction Filter Frequency Performance ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 MULTIPLEXER The ADA4891-3 has a disable pin used to power down the amplifier to save power or to create a mux circuit. If two or more ADA4891-3 outputs are connected together and only one output is enabled, then only the signal of the enabled amplifier appears at the output ...
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... ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 LAYOUT, GROUNDING, AND BYPASSING POWER SUPPLY BYPASSING Power supply pins are additional op amp inputs, and care must be taken so that a noise-free, stable dc voltage is applied. The purpose of bypass capacitors is to create a low impedance path from the supply to ground over a range of frequencies, thereby shunting or filtering the majority of the noise to ground ...
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... OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 1.70 1.60 1.50 1.30 1.15 0.90 0.15 MAX 0.05 MIN ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° 0° 0.51 (0.0201) 0.10 0.31 (0.0122) 0.25 (0.0098) SEATING 0.17 (0.0067) PLANE COMPLIANT TO JEDEC STANDARDS MS-012-AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN ...
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... ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 IDENTIFIER 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 4.50 4.40 4.30 PIN 1 1.05 1.00 0.80 0.15 0.05 COPLANARITY 0.10 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 1 2.80 4 PIN 1 0.65 BSC 0.95 15° MAX 0.85 1.10 MAX 0.75 0.15 0.23 6° 0.40 0.05 0.09 0° 0.25 COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 70. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters 8.75 (0.3445) 8.55 (0.3366 6.20 (0.2441) 1 5.80 (0.2283 ...
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... ADA4891-4ARZ-RL −40°C to +125°C ADA4891-1AR-EBZ ADA4891-1ARJ-EBZ ADA4891-2AR-EBZ ADA4891-2ARM-EBZ ADA4891-3AR-EBZ ADA4891-3ARU-EBZ ADA4891-4AR-EBZ ADA4891-4ARU-EBZ RoHS Compliant Part. ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 Package Description 8-Lead SOIC_N 8-Lead SOIC_N, 13” Tape and Reel 8-Lead SOIC_N, 7” Tape and Reel 5-Lead SOT-23, 7” ...
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... ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 NOTES ©2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08054-0-9/10(C) Rev Page ...