AD8221BRZ Analog Devices Inc, AD8221BRZ Datasheet
AD8221BRZ
Specifications of AD8221BRZ
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AD8221BRZ 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 Pin Configuration ...
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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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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Descriptions Pin No. Mnemonic Description 1 −IN Negative Input Terminal Gain Setting Terminal. Place resistor across the Gain Setting Terminal. Place resistor across the R ...
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AD8221 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 4. Typical Distribution for ...
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V = ±15V 0. ±5V S 0.55 0.50 0.45 0.40 –15 –10 – COMMON-MODE VOLTAGE (V) Figure 10. 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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AD8221 70 GAIN = 1000 60 50 GAIN = 100 40 30 GAIN = GAIN = 1 0 –10 –20 –30 100 1k 10k 100k FREQUENCY (Hz) Figure 16. Gain vs. Frequency 160 GAIN = 1000 140 ...
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V = ±15V 100 1k LOAD RESISTANCE (Ω) Figure 22. Output Voltage Swing vs. Load Resistance +V –0 S –1 SOURCING –2 – SINKING +1 – ...
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AD8221 2µV/DIV Figure 28. 0 RTI Voltage Noise ( 0.1µV/DIV Figure 29. 0 RTI Voltage Noise (G = 1000) 1k 100 100 FREQUENCY (Hz) Figure 30. Current ...
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TO 0.01% 0.002%/DIV 5.6µs TO 0.001% Figure 34. 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 35. Large Signal Pulse Response and Settling Time (G = ...
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AD8221 2 20mV/DIV Figure 40. Small Signal Response 1000 SETTLED TO 0.001% SETTLED TO 0.01 OUTPUT VOLTAGE STEP SIZE (V) Figure 41. Settling Time vs. Step Size ( ...
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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 current ...
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AD8221 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 − G ...
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REFERENCE TERMINAL As shown in Figure 43, 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 the ...
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AD8221 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 ...
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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 the ...
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AD8221 DIE INFORMATION Die size: 1575 μm × 2230 μm Die thickness: 381 μm To minimize gain errors introduced by the bond wires, use Kelvin connections between the chip and the gain resistor, R Pad 2A and Pad 2B in ...
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OUTLINE DIMENSIONS IDENTIFIER 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 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 ...
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... AD8221BR-REEL7 –40°C to +85°C AD8221BRZ –40°C to +85°C AD8221BRZ-R7 –40°C to +85°C AD8221BRZ-RL –40°C to +85°C AD8221AC-P7 –40°C to +85° RoHS Compliant Part, # denotes RoHS compliant product may be top or bottom marked. 2 See Typical Performance Characteristics for expected operation from 85°C to 125°C. ...