AD8221ARZ Analog Devices Inc, AD8221ARZ Datasheet
AD8221ARZ
Specifications of AD8221ARZ
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AD8221ARZ Summary of contents
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FEATURES Easy to use Available in space-saving MSOP Gain set with 1 external resistor (gain range 1 to 1000) Wide power supply range: ±2 ±18 V Temperature range for specified performance: −40°C to +85°C 1 Operational up to ...
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AD8221 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Connection Diagram ....................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 8 Thermal Characteristics .............................................................. 8 ESD Caution.................................................................................. 8 Typical Performance Characteristics ............................................. 9 Theory ...
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SPECIFICATIONS V = ± 25° REF A Table 1. Parameter Conditions COMMON-MODE REJECTION RATIO CMRR with 1 kΩ Source Imbalance G = ...
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AD8221 Parameter Conditions POWER SUPPLY Operating Range V S Quiescent Current Over Temperature T = −40°C to +85°C DYNAMIC RESPONSE Small Signal −3 dB Bandwidth 100 G = 1000 Settling Time 0.01% ...
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Parameter Conditions TEMPERATURE RANGE Specified Performance 4 Operating Range 1 Total RTI /G). OS OSI OSO 2 Does not include the effects of external resistor R 3 One input grounded ...
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AD8221 Parameter REFERENCE INPUT Voltage Range Gain to Output POWER SUPPLY Operating Range Quiescent Current Over Temperature DYNAMIC RESPONSE Small Signal –3 dB Bandwidth 100 G = 1000 ...
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Parameter TEMPERATURE RANGE Specified Performance 4 Operating Range 1 Total RTI /G). OS OSI OSO 2 Does not include the effects of external resistor R 3 One input grounded See ...
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AD8221 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Internal Power Dissipation Output Short-Circuit Current Input Voltage (Common-Mode) Differential Input Voltage Storage Temperature Range 1 Operating Temperature Range 1 Temperature range for specified performance is –40°C to +85°C. See Typical ...
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TYPICAL PERFORMANCE CHARACTERISTICS T = 25° ± kΩ, unless otherwise noted 1600 1400 1200 1000 800 600 400 200 0 –150 –100 –50 0 CMR (µV/V) Figure 3. Typical Distribution for CMR ...
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AD8221 0.80 0.75 0.70 0. ±15V S 0. ±5V S 0.55 0.50 0.45 0.40 –15 –10 –5 0 COMMON-MODE VOLTAGE (V) Figure 9. I vs. CMV BIAS 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0 ...
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GAIN = 1000 60 50 GAIN = 100 40 30 GAIN = GAIN = 1 0 –10 –20 –30 100 1k 10k 100k FREQUENCY (Hz) Figure 15. Gain vs. Frequency 160 GAIN = 1000 140 GAIN ...
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AD8221 ±15V 100 LOAD RESISTANCE (Ω) Figure 21. Output Voltage Swing vs. Load Resistance +V –0 S –1 –2 – – ...
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Figure 27. 0 RTI Voltage Noise ( 0.1µV/DIV Figure 28. 0 RTI Voltage Noise (G = 1000) 1k 100 100 1k FREQUENCY (Hz) Figure 29. Current ...
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AD8221 5V/DIV 4.9µs TO 0.01% 0.002%/DIV 5.6µs TO 0.001% Figure 33. Large Signal Pulse Response and Settling Time (G = 10), 0.002%/DIV 5V/DIV 10.3µs TO 0.01% 0.002%/DIV 13.4µs TO 0.001% Figure 34. Large Signal Pulse Response and Settling Time (G ...
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Figure 39. Small Signal Response 1000 kΩ SETTLED TO 0.001% SETTLED TO 0.01 OUTPUT VOLTAGE STEP SIZE (V) Figure 40. Settling Time vs. ...
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AD8221 THEORY OF OPERATION I I COMPENSATION 400Ω –IN Q1 –V S The AD8221 is a monolithic instrumentation amplifier based on the classic 3-op amp topology. Input transistors Q1 and Q2 are biased at a fixed ...
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GAIN SELECTION Placing a resistor across the R terminals set the gain of G AD8221, which can be calculated by referring to Table using the gain equation kΩ − ...
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AD8221 REFERENCE TERMINAL As shown in Figure 42, the reference terminal, REF one end kΩ resistor. The output of the instrumentation amplifier is referenced to the voltage on the REF terminal; this is useful when ...
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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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AD8221 In this topology, an OP27 sets the reference voltage of the AD8221. The output signal of the instrumentation amplifier is taken across the OUT pin and the REF pin. Two 1 kΩ resistors and a 499 Ω resistor attenuate ...
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OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 2. PIN 1 0.65 BSC 0.95 0.85 1.10 MAX 0.75 0.15 0.38 0.23 0.00 0.22 0.08 COPLANARITY SEATING 0.10 PLANE COMPLIANT ...
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... AD8221AR-REEL7 –40°C to +85°C 2 AD8221ARZ –40°C to +85°C 2 AD8221ARZ-R7 –40°C to +85°C 2 AD8221ARZ-RL –40°C to +85°C AD8221ARM –40°C to +85°C AD8221ARM-REEL –40°C to +85°C AD8221ARM REEL7 –40°C to +85°C 2 AD8221ARMZ – ...
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NOTES Rev Page AD8221 ...
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AD8221 NOTES ©2003–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D03149–0–9/07(B) Rev Page ...