ADA4817-2 Analog Devices, ADA4817-2 Datasheet
ADA4817-2
Specifications of ADA4817-2
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ADA4817-2 Summary of contents
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... ADC driving. The ADA4817-1 is available × 3 mm, 8-lead LFCSP and 8-lead SOIC, and the ADA4817-2 is available × 4 mm, 16-lead LFCSP. These packages feature a low distortion pinout that improves second harmonic distortion and simplifies circuit board layout ...
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... ADA4817-1/ADA4817-2 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Connection Diagrams ...................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 ±5 V Operation ............................................................................. Operation ............................................................................... 4 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 Maximum Safe Power Dissipation ............................................. 5 ESD Caution .................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ............................................. 8 Test Circuits ..................................................................................... 13 Theory of Operation ...................................................................... 14 Closed-Loop Frequency Response ........................................... 14 Noninverting Closed-Loop Frequency Response ...
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... Sinking/sourcing Enabled Powered down − 4 5.5 V, −V = − −V = −4 −5 Rev Page ADA4817-1/ADA4817-2 Min Typ Max 1050 200 390 ≥410 60 60 870 9 −113/−117 −90/−94 −64/−66 4 2.5 0.4 2 ...
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... ADA4817-1/ADA4817 OPERATION T = 25° −V = − Table 2. Parameter DYNAMIC PERFORMANCE –3 dB Bandwidth Full Power Bandwidth 0.1 dB Flatness Slew Rate Settling Time to 0.1% NOISE/HARMONIC PERFORMANCE Harmonic Distortion (HD2/HD3) Input Voltage Noise Input Current Noise DC PERFORMANCE Input Offset Voltage ...
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... LFSCP_VQ (ADA4817-2) 64 MAXIMUM SAFE POWER DISSIPATION The maximum safe power dissipation for the ADA4817-1/ ADA4817-2 are limited by the associated rise in junction temperature ( the die. At approximately 150°C (which is J the glass transition temperature), the properties of the plastic change. Even temporarily exceeding this temperature limit may change the stresses that the package exerts on the die, permanently shifting the parametric performance of the ADA4817-x ...
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... ADA4817-1/ADA4817-2 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Table 5. ADA4817-1 Pin Function Descriptions (8-Lead LFCSP) Pin No. Mnemonic −IN 4 +IN 5 − OUT Exposed pad (EPAD) Table 6. ADA4817-1 Pin Function Descriptions (8-Lead SOIC) Pin No. Mnemonic −IN 3 +IN 4 −V ...
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... CONNECT NOTES 1. EXPOSED PAD CAN BE CONNECTED TO THE GROUND PLANE OR NEGATIVE SUPPLY PLANE. Figure 7. ADA4817-2 Pin Configuration (16-Lead LFCSP) Description Inverting Input 1. Noninverting Input 1. No Connect. Negative Supply 2. Output 2. Positive Supply 2. Power-Down 2. Do not leave floating. Feedback Pin 2. ...
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... ADA4817-1/ADA4817-2 TYPICAL PERFORMANCE CHARACTERISTICS T = 25° ± 348 Ω for G > 1 unless noted otherwise DUAL –3 –6 –9 –12 100k 1M 10M 100M FREQUENCY (Hz) Figure 8. Small Signal Frequency Response for Various Gains (LFCSP) ...
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... HD3 100Ω L 10M 100M = 2 V p-p Figure 18. Distortion vs. Frequency for Various Supplies, V OUT = 5V S 10M 100M = 2 V p-p OUT Rev Page ADA4817-1/ADA4817 –3 – +25°C, SINGLE +25°C, DUAL –40°C, SINGLE – –40°C, DUAL ...
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... ADA4817-1/ADA4817-2 0.15 DUAL 0.5pF F SINGLE 0.10 SINGLE 0.05 0 –0.05 –0. –0.15 TIME (5ns/DIV) Figure 20. Small Signal Transient Response 0.075 0.050 0.025 0 –0.025 R = 0Ω 100Ω –0.050 ± –0.075 TIME (5ns/DIV) Figure 21. Small Signal Transient Response vs. Package 6 2 × ...
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... Figure 29. Offset Voltage vs. Temperature 1000 100 100 –40 –20 Figure 31. Quiescent Current vs. Temperature for Various Supply Voltages Rev Page ADA4817-1/ADA4817 100 TEMPERATURE (°C) 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) Figure 30. Input Voltage Noise 100 TEMPERATURE (° ...
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... ADA4817-1/ADA4817-2 1 ±5V S 1.5 –V 1.4 1.3 1.2 1.1 1.0 0 +5V S 0.8 –40 – TEMPERATURE (°C) Figure 32. Output Saturation Voltage vs. Temperature 70 60 GAIN 50 40 PHASE –10 10k 100k 1M 10M FREQUENCY (Hz) Figure 33. Open-Loop Gain and Phase vs. Frequency R = 100Ω OUT +V – OUT +V – OUT – ...
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... SNUB IN 49.9Ω 10µF 0.1µF –V S Figure 37. Capacitive Load Configuration 0.1µF V OUT OUT L 0.1µF V OUT Rev Page ADA4817-1/ADA4817 10µ 0.1µF 0.1µ 49.9Ω 10µF 0.1µF –V S Figure 38. Noninverting Gain Configuration +V S 10µF 0.1µF ...
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... Supply current and offset current are laser trimmed for optimum performance. These specifications make the ADA4817-1/ ADA4817-2 a great choice for high speed instrumentation and high resolution data acquisition systems. Its low noise, picoamp input current, precision offset, and high speed make them superb preamps for fast photo- diode applications ...
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... The V temperature drift is below 8 μV/°C; therefore, it can change up to 0.3 mV due to warm-up effects for an ADA4817-1/ADA4817 LFCSP The input bias current increases by a factor of 1.7 for every 10°C rise in temperature. ...
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... Figure 46 shows the small signal frequency response of the ADA4817 gain of 2 vs. C was used to show the peaking, but then two other values of 0.5 pF and 1 pF were used to show how to reduce the peaking or even eliminate it ...
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... The dedicated feedback pin reduces the distance from the output to the inverting input, which greatly simplifies the routing of the feedback network. When laying out the ADA4817-1/ADA4817 unity-gain amplifier recommended that a short, but wide, trace be placed between the dedicated feedback pins, and the inverting input to the amplifier be used to minimize stray parasitic inductance ...
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... Poor PCB layout, contaminants, and the board insulator material can create leakage currents that are much larger than the input bias current of the ADA4817-1/ADA4817-2. Any voltage differential between the inputs and nearby runs sets up leakage currents through the PCB insulator, for example 100 GΩ ...
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... The designer does not need to use the dedicated feedback pin to provide feedback for the ADA4817-1/ADA4817-2. The output pin of the ADA4817-1/ADA4817-2 can still be used to provide feedback to the inverting input of the ADA4817-1/ADA4817-2. WIDEBAND PHOTODIODE PREAMP ...
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... The current equivalent noise from the inverting terminal is typically negligible for most applications. The innovative architecture used in the ADA4817-1/ADA4817-2 makes balancing both inputs unnecessary, as opposed to traditional FET input amplifiers. Therefore, minimizing the impedance seen from the noninverting terminal to ground at all frequencies is critical for optimal noise performance ...
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... HIGH SPEED JFET INPUT INSTRUMENTATION AMPLIFIER Figure 53 shows an example of a high speed instrumentation amplifier with a high input impedance using the ADA4817-1/ ADA4817-2. The dc transfer function is ⎛ ⎞ ⎜ ⎟ = − ⎜ ⎟ OUT ⎝ ⎠ G For recommended that the feedback resistors for the two preamps be set to 0 Ω ...
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... ADA4817-1/ADA4817 ideal candidate for active filters. Moreover, thanks to the low input bias current provided by the FET stage, the ADA4817-1/ADA4817-2 eliminate any dc errors. Figure 54 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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... TIME (5ns/DIV) Figure 56. Small Signal Transient Response (Low-Pass Filter) 1.2 90MHz 0.8 0.4 0 –0.4 –0.8 –1.2 Figure 57. Large Signal Transient Response (Low-Pass Filter) Rev Page ADA4817-1/ADA4817-2 45MHz TIME (5ns/DIV) ...
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... ADA4817-1/ADA4817-2 OUTLINE DIMENSIONS PIN 1 INDICATOR 0.90 MAX 0.85 NOM SEATING PLANE 4.00 (0.157) 3.90 (0.154) 3.80 (0.150) 1.75 (0.069) 1.35 (0.053) 0.10 (0.004) MAX COPLANARITY 0.10 CONTROLLING DIMENSIONS ARE IN MILLIMETER; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 59. 8-Lead Standard Small Outline Package with Exposed Pad [SOIC_N_EP] 3 ...
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... Body, Very Thin Quad (CP-16-4) Dimensions shown in millimeters Package Description 8-Lead LFCSP_VD 8-Lead LFCSP_VD 8-Lead LFCSP_VD 8-Lead SOIC_N_EP 8-Lead SOIC_N_EP 8-Lead SOIC_N_EP 16-Lead LFCSP_VQ 16-Lead LFCSP_VQ 16-Lead LFCSP_VQ Rev Page ADA4817-1/ADA4817-2 0.60 MAX (BOTTOM VIEW) PIN 1 INDICATOR ...
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... ADA4817-1/ADA4817-2 NOTES Rev Page ...
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... NOTES Rev Page ADA4817-1/ADA4817-2 ...
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... ADA4817-1/ADA4817-2 NOTES ©2008–2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07756-0-3/09(A) Rev Page ...