AD623BR Analog Devices Inc, AD623BR Datasheet
AD623BR
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AD623BR Summary of contents
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FEATURES Easy to use Higher performance than discrete design Single-supply and dual-supply operation Rail-to-rail output swing Input voltage range extends 150 mV below ground (single supply) Low power, 550 μA maximum supply current Gain set with one external resistor Gain ...
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AD623 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Connection Diagram ....................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Single Supply ................................................................................. 3 Dual Supplies ................................................................................ 4 Both Dual and Single Supplies .................................................... 6 ...
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SPECIFICATIONS SINGLE SUPPLY Typical @ 25°C single supply and R S Table 1. Parameter Conditions GAIN (100 k/R Gain Range 1 Gain Error G1 V OUT 0. 3 ...
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AD623 Parameter Conditions INPUT Input Impedance Differential Common-Mode 2 Input Voltage Range Common-Mode Rejection with 1 kΩ Source Imbalance ...
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Parameter Conditions Nonlinearity G1 V OUT −4 +3 > −4 +4 1000 Gain vs. Temperature > 1 VOLTAGE OFFSET Total RTI error ...
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AD623 Parameter Conditions DYNAMIC RESPONSE Small Signal −3 dB Bandwidth 100 G = 1000 Slew Rate Settling Time to 0.01 ± step ...
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ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Supply Voltage 1 Internal Power Dissipation Differential Input Voltage Output Short-Circuit Duration Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10 sec) 1 Specification is for device in free air: 8-Lead PDIP Package: ...
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AD623 TYPICAL PERFORMANCE CHARACTERISTICS At 25° ±5 V, and kΩ, unless otherwise noted 300 280 260 240 220 200 180 160 140 120 100 –100 –80 –60 –40 ...
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CMRR (dB) Figure 9. Typical Distribution for CMRR ( 100 G= 100 G= 1000 10 1 ...
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AD623 CH1 10mV A 1s Figure 15. 0 Current Noise (0.71 pA/DIV) 1µV/DIV Figure 16. 0 RTI Voltage Noise (1 DIV = 1 μV p-p) 120 110 100 ...
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V = ±2. –1 –2 –3 –4 –5 –6 –5 –4 –3 –2 –1 0 COMMON-MODE INPUT (V) Figure 21. Maximum Output Voltage vs. Common-Mode Input, G ≥ 10 ...
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AD623 ± ±2. FREQUENCY (kHz) Figure 27. Large Signal Response, G ≤ 100 GAIN (V/V) Figure 28. Settling ...
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Figure 33. Small Signal Pulse Response 20mV Figure 34. Small Signal Pulse Response 10, R 20mV Figure 35. Small Signal Pulse Response 100, R 2µ kΩ 100 ...
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AD623 50µV Figure 39. Gain Nonlinearity −100, 15 ppm/DIV V+ 1V (V+) –0.5 (V+) –1.5 (V+) –2.5 (V–) +0.5 V– Rev Page 0.5 1.0 1.5 OUTPUT CURRENT (mA) Figure 40. Output Voltage ...
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THEORY OF OPERATION The AD623 is an instrumentation amplifier based on a modified classic 3-op-amp approach, to assure single or dual supply operation even at common-mode voltages at the negative supply rail. Low voltage offsets, input and output, as well ...
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AD623 APPLICATIONS INFORMATION BASIC CONNECTION Figure 42 and Figure 43 show the basic connection circuits for the AD623. The +V and −V terminals are connected to the S S power supply. The supply can be either bipolar (V ±6 V) ...
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INPUT AND OUTPUT OFFSET VOLTAGE The low errors of the AD623 are attributed to two sources, input and output errors. The output error is divided by the programmed gain when referred to the input. In practice, the input errors dominate ...
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AD623 The circuit in Figure 45 should be built using a PC board with a ground plane on both sides. All component leads should be as short as possible. Resistors R1 and R2 can be common 1% metal film units, ...
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Ground Returns for Input Bias Currents Input bias currents are those dc currents that must flow to bias the input transistors of an amplifier. These are usually transistor base currents. When amplifying floating input sources, such as transformers or ac-coupled ...
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AD623 Amplifying Signals with Low Common-Mode Voltage Because the common-mode input range of the AD623 extends 0.1 V below ground possible to measure small differential signals which have low, or no, common-mode component. Figure 54 shows a thermocouple ...
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Table 8. Maximum Attainable Gain and Resulting Output Swing for Different Input Conditions V (V) V (V) REF Pin (V) Supply Voltages (V) CM DIFF 0 ± ±100 m 2 ± ±5 ...
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AD623 OUTLINE DIMENSIONS 0.210 (5.33) MAX 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE ...
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... AD623BR −40°C to +85°C AD623BR-REEL −40°C to +85°C AD623BR-REEL7 −40°C to +85°C AD623BRZ 1 −40°C to +85°C 1 AD623BRZ-R7 −40°C to +85°C 1 AD623BRZ-RL −40°C to +85°C 1 EVAL-INAMP-62RZ RoHS Compliant Part. 3.20 3.00 2.80 5 ...
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AD623 NOTES ©1997–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00788-0-7/08(D) Rev Page ...