ADA4857-2 Analog Devices, ADA4857-2 Datasheet
ADA4857-2
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ADA4857-2 Summary of contents
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... The ADA4857-1 amplifier is available × 3 mm, 8-lead LFCSP and a standard 8-lead SOIC. The ADA4857-2 is available × 4 mm, 16-lead LFCSP. The LFCSP features an exposed paddle that provides a low thermal resistance path to the printed circuit board (PCB) ...
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... ADA4857-1/ADA4857-2 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Connection Diagrams ...................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 ±5 V Supply ................................................................................... Supply ................................................................................... 4 Absolute Maximum Ratings ............................................................ 6 Thermal Resistance ...................................................................... 6 Maximum Power Dissipation ..................................................... 6 ESD Caution .................................................................................. 6 Pin Configurations and Function Descriptions ........................... 7 Typical Performance Characteristics ............................................. 9 REVISION HISTORY 8/11—Rev Rev. B Changes to Table 1 Conditions ....................................................... 3 Changes to Table 2 Conditions ...
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... Chip powered down Common mode Differential mode Common mode V = ± ±2 kΩ 100 Ω L Sinking and sourcing 30% overshoot Rev Page ADA4857-1/ADA4857-2 Min Typ 650 850/750 600/550 400/350 110 75/90 2800 15 −108 −108 −88 −93 −65 −62 4.4 1.5 ± ...
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... ADA4857-1/ADA4857-2 Parameter POWER SUPPLY Operating Range Quiescent Current Quiescent Current (Power Down) Positive Power Supply Rejection Negative Power Supply Rejection +5 V SUPPLY T = 25° + 499 Ω Table 2. Parameter DYNAMIC PERFORMANCE –3 dB Bandwidth (LFCSP/SOIC) Full Power Bandwidth Bandwidth for 0 ...
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... kΩ 100 Ω L Sinking and sourcing 30% overshoot ≥ V − 4 5.5 V, − −V = −0 +0 Rev Page ADA4857-1/ADA4857-2 Min Typ Max Unit 1 4.5 10 ...
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... referenced to − /2. OUT values are approximations. JA 3.0 2.5 2.0 ADA4857-2 (LFCSP) 1.5 1.0 ADA4857-1 (LFCSP) 0.5 ADA4857-1 (SOIC) 0 –40 –30 –20 – 100 110 120 AMBIENT TEMPERATURE (°C) Data Sheet ) times the S is referenced L , the worst ...
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... GND or V Exposed Pad. The exposed pad S may be connected to GND Table 6. 8-Lead SOIC Pin Function Descriptions Pin No Rev Page ADA4857-1/ADA4857 ADA4857-1 – TOP VIEW +IN OUT 3 6 (Not to Scale) –V NC ...
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... S1 13 OUT1 PD1 16 FB1 EP GND –V –IN1 1 S1 ADA4857-2 +IN1 TOP VIEW +IN2 (Not to Scale) – –IN2 CONNECT Figure 7. 16-Lead LFCSP Pin Configuration Description Inverting Input 1. Noninverting Input 1. No Connect. Negative Supply 2. ...
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... Figure 13. Large Signal Frequency Response vs. V Rev Page ADA4857-1/ADA4857-2 = 499 Ω), unless otherwise noted + ± 1kΩ p-p OUT ...
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... ADA4857-1/ADA4857 100Ω –1 –2 –3 – – ±5V S – 0.2V p-p OUT – 100 FREQUENCY (MHz) Figure 14. Small Signal Frequency Response for Various Resistive Loads (LFCSP –1 –2 –3 – +10 – ...
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... R 2 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 –2.5 Figure 25. Large Signal Transient Response for Various Output Voltages (LFCSP) Rev Page ADA4857-1/ADA4857-2 V OUT OUTPUT INPUT TIME (5ns/DIV) Figure 23. Short-Term Settling Time (LFCSP ± 150Ω ...
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... ADA4857-1/ADA4857-2 0.25 0.20 0.15 0. 1.5pF 0. –0.05 –0.10 –0.15 –0.20 –0.25 TIME (10ns/DIV) Figure 26. Small Signal Transient Response for Various Capacitive Loads (LFCSP) 0.25 0.20 0. ±5V S 0.10 0. ±2. –0.05 –0.10 –0.15 –0.20 –0.25 TIME (10ns/DIV) Figure 27. Small Signal Transient Response for Various Supply Voltages (LFCSP) ...
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... Figure 36. Output Overdrive Recovery for Various Resistive Loads –30 –40 –50 –60 –70 –80 –90 100 1000 Figure 37. Common-Mode Rejection Ratio (CMRR) vs. Frequency Rev Page ADA4857-1/ADA4857 ± 1kΩ LFCSP 0 100 FREQUENCY (MHz) Figure 35 ...
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... ADA4857-1/ADA4857-2 100 V = ± 100 1k 10k FREQUENCY (Hz) Figure 38. Input Current Noise vs. Frequency 238 MEAN: 5.00 SD: 0. 4.85 4.90 4.95 5.00 SUPPLY CURRENT (mA) Figure 39. Supply Current 100k 1M 5.05 5.10 5.15 Rev Page 1000 100 100 1k 10k FREQUENCY (Hz) Figure 40. Input Voltage Noise vs. Frequency 3 ...
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... S Figure 44. Typical Capacitive Load Configuration (LFCSP) 0.1µF V OUT OUT R L 0.1µF V OUT Rev Page ADA4857-1/ADA4857 10µF 1kΩ 1kΩ 0.1µF V 1kΩ IN 53.6Ω 1kΩ 10µF 0.1µF –V S Figure 45. Common-Mode Rejection +V S 10µF 0.1µF V OUT ...
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... ADA4857-1/ADA4857-2 APPLICATIONS INFORMATION POWER-DOWN OPERATION The PD pin is used to power down the chip, which reduces the quiescent current and the overall power consumption low enabled, which means that the chip is on with full power when the PD pin input voltage is low (see Table 8). Note that PD does not put the output in a high-Z state, which means that the ADA4857 should not be used as a multiplexer ...
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... IF strips. With a 410 MHz gain bandwidth product and high slew rate, the ADA4857 ideal candidate for active filters. Figure 48 shows the frequency response of 90 MHz and 45 MHz LPFs. In addition to the bandwidth requirements, the slew rate must be capable of supporting the full power bandwidth of the filter ...
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... ADA4857-1/ADA4857-2 NOISE To analyze the noise performance of an amplifier circuit, identify the noise sources and determine if the source has a significant contribution to the overall noise performance of the amplifier. To simplify the noise calculations, noise spectral densities were used rather than actual voltages to leave bandwidth out of the expressions (noise spectral density, which is generally expressed in nV/√ ...
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... 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. Figure 52. 8-Lead Standard Small Outline Package [SOIC_N] (R-8) Dimensions shown in millimeters and (inches) Rev Page ADA4857-1/ADA4857-2 0.50 BSC 5 8 1.60 EXPOSED 1 ...
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... ADA4857-1YCP-EBZ ADA4857-2YCPZ-R2 –40°C to +125°C ADA4857-2YCPZ-RL –40°C to +125°C ADA4857-2YCPZ-R7 –40°C to +125°C ADA4857-2YCP-EBZ RoHS Compliant Part. ©2008–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 4.00 BSC SQ 0.60 MAX ...