AD8250ARMZ-RL Analog Devices Inc, AD8250ARMZ-RL Datasheet
AD8250ARMZ-RL
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AD8250ARMZ-RL Summary of contents
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FEATURES Small package: 10-lead MSOP Programmable gains Digital or pin-programmable gain setting Wide supply: ± ±15 V Excellent dc performance High CMRR 98 dB (minimum Low gain drift: 10 ppm/°C (maximum) ...
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AD8250 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Diagram ........................................................................... 5 Absolute Maximum Ratings............................................................ 6 Maximum Power Dissipation ..................................................... 6 ESD Caution.................................................................................. 6 ...
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SPECIFICATIONS + −V = − REF Table 2. Parameter COMMON-MODE REJECTION RATIO (CMRR) CMRR with 1 kΩ Source Imbalance ...
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AD8250 Parameter Settling Time 0.001 Slew Rate Total Harmonic Distortion GAIN Gain Range Gain Error G ...
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Parameter POWER SUPPLY Operating Range Quiescent Current Quiescent Current, −I S Over Temperature TEMPERATURE RANGE Specified Performance 1 Add time for the output to slew and settle to calculate the total time for a gain change. TIMING DIAGRAM ...
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AD8250 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Power Dissipation Output Short-Circuit Current Common-Mode Input Voltage Differential Input Voltage Digital Logic Inputs Storage Temperature Range Operating Temperature Range 3 Lead Temperature (Soldering, 10 sec) Junction Temperature θ (Four-Layer JEDEC ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic 1 −IN 2 DGND 3 − OUT REF 10 +IN –IN + DGND ...
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AD8250 TYPICAL PERFORMANCE CHARACTERISTICS T = 25° +15 V, −V = − 1400 1200 1000 800 600 400 200 0 –120 –90 –60 – CMRR (µV/V) Figure 6. Typical Distribution of ...
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Figure 12. 0 RTI Voltage Noise 100 1k FREQUENCY (Hz) Figure 13. Current Noise Spectral Density vs. Frequency 140pA/DIV Figure ...
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AD8250 – – –10 –15 –40 –25 – TEMPERATURE (°C) Figure 18. Input Bias Current and Offset Current vs. Temperature 140 ...
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OUTPUT VOLTAGE (V) Figure 24. Gain Nonlinearity vs. Output Voltage 1kHz ...
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AD8250 +V S –1 +85°C +125°C +25°C –2 +2 +85°C +1 +125°C – SUPPLY VOLTAGE (±V Figure 30. Input Voltage Limit vs. Supply Voltage FAULT CONDITION (OVER DRIVEN INPUT) ...
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NO 47pF LOAD 20mV/DIV TIME (µs) Figure 36. Small Signal Pulse Response for Various Capacitive Loads 5V/DIV 585ns TO 0.01% 615ns TO 0.001% 0.002%/DIV TIME (µs) Figure 37. Large Signal Pulse Response and Settling Time ...
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AD8250 20mV/DIV TIME (µs) Figure 42. Small Signal Response kΩ 100 20mV/DIV TIME (µs) Figure 43. Small Signal Response kΩ 100 ...
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THEORY OF OPERATION 2.2kΩ –IN +IN 2.2kΩ The AD8250 is a monolithic instrumentation amplifier based on the classic, 3-op-amp topology as shown in Figure 47 fabricated on the Analog Devices, Inc., proprietary iCMOS® process that provides precision, linear ...
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AD8250 Table 5. Truth Table Logic Levels for Transparent Gain Mode −V Low Low S −V Low High S −V High Low S −V High High S Latched Gain Mode Some applications have multiple programmable devices such ...
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POWER SUPPLY REGULATION AND BYPASSING The AD8250 has high PSRR. However, for optimal performance, a stable dc voltage should be used to power the instrumentation amplifier. Noise on the supply pins can adversely affect per- formance all linear ...
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AD8250 REFERENCE TERMINAL The reference terminal, REF one end kΩ resistor (see Figure 47). The instrumentation amplifier output is referenced to the voltage on the REF terminal; this is useful when the output signal needs ...
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RF INTERFERENCE RF rectification is often a problem when amplifiers are used in applications where there are strong RF signals. The disturbance can appear as a small dc offset voltage. High frequency signals can be filtered with a low-pass RC ...
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AD8250 APPLICATIONS DIFFERENTIAL OUTPUT In certain applications necessary to create a differential signal. High resolution ADCs often require a differential input. In other cases, transmission over a long distance can require differential signals for better immunity to interference. ...
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DATA ACQUISITION The AD8250 makes an excellent instrumentation amplifier for use in data acquisition systems. Its wide bandwidth, low distortion, low settling time, and low noise enable it to condition signals in front of a variety of 16-bit ADCs. Figure ...
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... PIN 1 IDENTIFIER 0.95 0.85 0.75 0.15 0.05 COPLANARITY ORDERING GUIDE 1 Model Temperature Range AD8250ARMZ –40°C to +85°C AD8250ARMZ-RL –40°C to +85°C AD8250ARMZ-R7 –40°C to +85°C AD8250-EVALZ RoHS Compliant Part. 3.10 3.00 2.90 5. 4.90 4. 0.50 BSC 15° ...
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NOTES Rev Page AD8250 ...
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AD8250 NOTES ©2007–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06288-0-11/10(B) Rev Page ...