AD8220ARMZ Analog Devices Inc, AD8220ARMZ Datasheet
AD8220ARMZ
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AD8220ARMZ Summary of contents
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FEATURES Low input currents 10 pA maximum input bias current (B grade) 0.6 pA maximum input offset current (B grade) High CMRR 100 dB CMRR (minimum grade CMRR (minimum kHz ...
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AD8220 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configuration ............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 8 ESD Caution .................................................................................. 8 Pin Configuration and Function Descriptions ............................. ...
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SPECIFICATIONS − = − REF kΩ , unless otherwise noted. L Table 1. Parameter Test Conditions COMMON-MODE T ...
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AD8220 Parameter Test Conditions Settling Time 0.01 step 100 G = 1000 Settling Time 0.001 step ...
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Parameter Test Conditions POWER SUPPLY Operating Range Quiescent Current T A Over Temperature T OPR TEMPERATURE RANGE For Specified T OPR Performance 1 When the output sinks more than 4 mA, use capacitor in parallel with the ...
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AD8220 Parameter Test Conditions INPUT CURRENT Input Bias Current T A Over Temperature T OPR Input Offset Current T A Over Temperature T OPR DYNAMIC RESPONSE T A Small Signal Bandwidth, − ...
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Parameter Test Conditions OUTPUT Output Swing kΩ L Over Temperature T OPR Short-Circuit Current T REFERENCE INPUT − Voltage Range T Gain to Output ...
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AD8220 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Power Dissipation Output Short-Circuit Current Input Voltage (Common Mode) Differential Input Voltage Storage Temperature Range 2 Operating Temperature Range Lead Temperature (Soldering 10 sec) Junction Temperature θ (4-Layer JEDEC Standard Board) ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 −IN Negative Input Terminal (True Differential Input Gain Setting Terminals (Place Resistor Across the +IN Positive Input Terminal (True ...
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AD8220 TYPICAL PERFORMANCE CHARACTERISTICS 1200 1000 800 600 400 200 0 –40 –20 0 CMRR (µV/V) Figure 5. Typical Distribution of CMRR ( 1000 800 600 400 200 0 –200 –100 0 V (µV) OSI Figure 6. Typical ...
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XX 5µV/DIV XX XX XXX (X) Figure 11. 0 RTI Voltage Noise ( 1µV/DIV XX XX XXX (X) Figure 12. 0 RTI Voltage Noise (G = 1000 ...
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AD8220 10n 1n I BIAS 100p 10p 1p 0.1p –50 – TEMPERATURE (°C) Figure 17. Input Bias Current and Offset Current vs. Temperature ± REF 10n 1n I BIAS ...
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R = 2kΩ LOAD R = 10kΩ LOAD V = ±15V S –10 –8 –6 –4 – OUTPUT VOLTAGE (V) Figure 23. Gain Nonlinearity 2kΩ LOAD R = 10kΩ LOAD V = ...
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AD8220 18 +13V ±15V SUPPLIES 12 6 –14.9V, +5.4V +3V –4.9V, +0.4V 0 ±5V SUPPLIES –4.9V, –4.1V –6 –5.3V –14.8V, –9V –12 –15.3V –18 –16 –12 –8 –4 0 OUTPUT VOLTAGE (V) Figure 29. Input Common-Mode Voltage Range vs. Output ...
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R (Ω) LOAD Figure 35. Output Voltage Swing vs. Load Resistance –1 +125°C –2 –3 – +125°C ...
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AD8220 XX 5V/DIV 5µs TO 0.01% 6µs TO 0.001% 0.002%/DIV XX XX XXX (X) Figure 41. Large Signal Pulse Response and Settle Time kΩ ± LOAD S XX 5V/DIV 4.3μs ...
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XXX Figure 47 Small Signal Pulse Response 100 ± REF 20mV/DIV XXX Figure 48. Small Signal Pulse Response 1000 100 pF ±15 ...
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AD8220 15 10 SETTLED TO 0.001% 5 SETTLED TO 0.01 OUTPUT VOLTAGE STEP SIZE (V) Figure 53. Settling Time vs. Output Voltage Step Size ( ± 100 ...
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THEORY OF OPERATION +V S NODE A 24.7kΩ + –V PINCH S I The AD8220 is a JFET input, monolithic instrumentation amplifier based on the classic 3-op amp topology (see Figure 55). Input Transistor ...
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AD8220 GAIN SELECTION Placing a resistor across the R terminals sets the AD8220 gain, G which can be calculated by referring to Table using the gain equation kΩ ...
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REFERENCE TERMINAL The reference terminal, REF one end kΩ resistor (see Figure 55). The output of the instrumentation amplifier is referenced to the voltage on the REF terminal; this is useful when the output signal ...
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AD8220 RF INTERFERENCE RF rectification is often a problem in applications where there are large RF signals. The problem appears as a small dc offset voltage. The AD8220 by its nature has gate capacitance, C inputs. Matched ...
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APPLICATIONS INFORMATION AC-COUPLED INSTRUMENTATION AMPLIFIER Measuring small signals that are in the noise or offset of the amplifier can be a challenge. Figure 64 shows a circuit that can improve the resolution of small ac signals. The large gain reduces ...
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AD8220 AMPLITUDE +5V TIME –5V ±5V 0.1µF TIME +IN ±5V –IN 0.1µF +5V 10µF Figure 66. Configuring the AD8220 to Output A Ratiometric, Differential Signal +15V 0.1µF +IN AD8220 REF 4.99kΩ –IN 0.1µF –15V –15V OP1177 +5V 4.99kΩ 0.1µF 10µF ...
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ELECTROCARDIOGRAM SIGNAL CONDITIONING The AD8220 makes an excellent input amplifier for next generation ECGs. Its small size, high CMRR over frequency, rail-to-rail output, and JFET inputs are well suited for this application. Potentials measured on the skin range from 0.2 ...
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... IDENTIFIER ORDERING GUIDE 1, 2 Model Temperature Range AD8220ARMZ −40°C to +85°C AD8220ARMZ-RL −40°C to +85°C AD8220ARMZ-R7 −40°C to +85°C AD8220BRMZ −40°C to +85°C AD8220BRMZ-RL −40°C to +85°C AD8220BRMZ-R7 −40°C to +85°C AD8220WARMZ −40°C to +125°C AD8220WARMZ-RL − ...
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NOTES Rev Page AD8220 ...
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AD8220 NOTES ©2006–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D03579-0-5/10(B) Rev Page ...