AD8227BRMZ-RL Analog Devices Inc, AD8227BRMZ-RL Datasheet
AD8227BRMZ-RL
Specifications of AD8227BRMZ-RL
Related parts for AD8227BRMZ-RL
AD8227BRMZ-RL Summary of contents
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FEATURES Gain set with 1 external resistor Gain range 1000 Input voltage goes below ground Inputs protected beyond supplies Very wide power supply range Single supply: 2 Dual supply: ±1 ±18 V ...
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AD8227 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configuration ............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 7 Thermal Resistance ...................................................................... 7 ESD Caution .................................................................................. 7 Pin Configuration ...
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SPECIFICATIONS +V = +15 V, −V = − REF Table 2. Test Conditions/ Parameter Comments COMMON-MODE REJECTION RATIO 100 ...
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AD8227 Test Conditions/ Parameter Comments DYNAMIC RESPONSE Small Signal −3 dB Bandwidth 100 G = 1000 Settling Time 0.01 step 100 G ...
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V, − 25° REF A Table 3. Test Conditions/ Parameter Comments COMMON-MODE REJECTION RATIO ...
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AD8227 Test Conditions/ Parameter Comments DYNAMIC RESPONSE Small Signal −3 dB Bandwidth 100 G = 1000 Settling Time 0.01 step 100 G ...
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ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Supply Voltage Output Short-Circuit Current Maximum Voltage at −IN or +IN Minimum Voltage at −IN or +IN REF Voltage Storage Temperature Range Operating Temperature Range Maximum Junction Temperature Stresses above those listed under Absolute ...
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AD8227 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 6. Pin Function Descriptions Pin No. Mnemonic 1 − +IN 5 − REF 7 V OUT AD8227 – ...
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TYPICAL PERFORMANCE CHARACTERISTICS T = 25° ± kΩ, unless otherwise noted 500 400 300 200 100 0 –900 –600 –300 0 300 OUTPUT V (µV) OS Figure 3. Typical Distribution of Output ...
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AD8227 1.6 +0.02V, +1.5V 1.4 1.2 +0.02V, +1.35V 1 1.35V REF 0.8 0.6 0.4 0.2 0 +0.02V, –0.15V –0.2 +0.02V, –0.3V +1.35V, –0.3V –0.4 –0.5 0 0.5 1.0 1.5 OUTPUT VOLTAGE (V) Figure 9. Input Common-Mode Voltage vs. ...
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V = ±15V S 0V, +14.2V 15 –14.96V, +12.7V 0V, +11.2V 10 –11.96V, +11.94V, +10V +10V ±12V S –5 –11.96V, +11.94V, –11.1V –10 –11.1V 0V, –12.3V –15 –14.96V, –13.8V 0V, –15.3V –20 –20 –15 –10 ...
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AD8227 33 31 –0.14V –0.5 0 0.5 1.0 1.5 2.0 2.5 COMMON-MODE VOLTAGE (V) Figure 21. Input Bias Current vs. Common-Mode Voltage –15.01V ...
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G = 1000 140 G = 100 120 100 0 100 1k FREQUENCY (Hz) Figure 27. CMRR vs. Frequency, RTI 160 140 G = 1000 G ...
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AD8227 +V S –0.2 –0.4 –0.6 –0.8 –V S –0.2 –0.4 –0.6 –0 SUPPLY VOLTAGE (±V Figure 33. Input Voltage Limit vs. Supply Voltage +V S –0.1 –0.2 –40°C –0.3 +25°C +85°C –0.4 +105°C ...
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–10 –20 –30 –40 –10 –8 –6 –4 – OUTPUT VOLTAGE (V) Figure 39. Gain Nonlinearity 10 160 G = 100 120 ...
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AD8227 1.5pA/DIV Figure 45. 0 Current Noise 100 1k 10k FREQUENCY (Hz) Figure 46. Large-Signal Frequency Response 5V/DIV 13.4µs TO 0.01% 16.6µs TO 0.001% 0.002%/DIV Figure 47. Large-Signal Pulse ...
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Figure 51. Small-Signal Pulse Response 20mV/DIV Figure 52. Small-Signal Pulse Response 10, R 4µs/DIV = 10 kΩ 100 pF Figure 53. Small-Signal Pulse Response 100 4µs/DIV ...
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AD8227 C = 47pF L NO LOAD C = 100pF 147pF L 20mV/DIV Figure 55. Small-Signal Pulse Response with Various Capacitive Loads Infinity SETTLED TO 0.001 ...
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THEORY OF OPERATION NODE 3 ESD AND +IN OVERVOLTAGE Q1 PROTECTION R B ARCHITECTURE The AD8227 is based on the classic three op amp topology. This topology has two stages: a preamplifier to provide differential amplification followed by a difference ...
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AD8227 REFERENCE TERMINAL The output voltage of the AD8227 is developed with respect to the potential on the reference terminal. This is useful when the output signal needs to be offset to a precise midsupply level. For example, a voltage ...
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INPUT BIAS CURRENT RETURN PATH The input bias current of the AD8227 must have a return path to ground. When the source, such as a thermocouple, cannot provide a return current path, one should be created, as shown in Figure ...
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AD8227 APPLICATIONS INFORMATION DIFFERENTIAL DRIVE Figure 64 shows how to configure the AD8227 for differential output. +IN AD8227 –IN REF R – OP AMP R RECOMMENDED OP AMPS: AD8515, AD8641, AD820. RECOMMENDED R VALUES: 5kΩ to 20kΩ. Figure 64. Differential ...
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DRIVING AN ADC Figure 66 shows several different methods for driving an ADC. The ADC in the ADuC7026 microcontroller was chosen for this example because it has an unbuffered charge sampling architecture that is typical of most modern ADCs. This ...
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... AD8227ARZ −40°C to +125°C AD8227ARZ-RL 1 −40°C to +125°C 1 AD8227ARZ-R7 −40°C to +125°C 1 AD8227BRMZ −40°C to +125°C 1 AD8227BRMZ-RL −40°C to +125°C 1 AD8227BRMZ-R7 −40°C to +125°C 1 AD8227BRZ −40°C to +125°C 1 AD8227BRZ-RL −40°C to +125°C 1 AD8227BRZ-R7 − ...