AD8426ACPZ-R7 Analog Devices Inc, AD8426ACPZ-R7 Datasheet
AD8426ACPZ-R7
Specifications of AD8426ACPZ-R7
Related parts for AD8426ACPZ-R7
AD8426ACPZ-R7 Summary of contents
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FEATURES 2 channels in a small × LFCSP LFCSP package has no metal pad More routing room No current leakage to pad Gain set with 1 external resistor Gain range 1000 Input voltage goes ...
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AD8426 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Connection Diagram ....................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Dual-Supply Operation ............................................................... 3 Single-Supply Operation ............................................................. 6 Absolute Maximum Ratings ............................................................ 9 Thermal Resistance ...
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SPECIFICATIONS DUAL-SUPPLY OPERATION +V = +15 V, −V = − REF Table 2. Test Conditions/ Parameter Comments COMMON-MODE REJECTION V = − + RATIO (CMRR) CMRR ...
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AD8426 Test Conditions/ Parameter Comments REFERENCE INPUT Voltage Range Reference Gain to Output Reference Gain Error GAIN (49.4 kΩ/R Gain Range Gain Error V ± OUT ...
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Dynamic Performance Specifications +V = +15 V, −V = − REF Table 3. Single-Ended Output Configuration (Both Amplifiers) Test Conditions/ Parameter Comments DYNAMIC RESPONSE Small Signal −3 dB Bandwidth ...
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AD8426 SINGLE-SUPPLY OPERATION +V = 2.7 V, − 25° REF A Table 5. Test Conditions/ Parameter Comments COMMON-MODE REJECTION 1.7 ...
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Test Conditions/ Parameter Comments REFERENCE INPUT Voltage Range Reference Gain to Output Reference Gain Error GAIN (49.4 kΩ/R Gain Range Gain Error 0 1.8 V ...
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AD8426 Dynamic Performance Specifications +V = 2.7 V, − 25° REF A Table 6. Single-Ended Output Configuration (Both Amplifiers) Test Conditions/ Parameter Comments DYNAMIC RESPONSE ...
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ABSOLUTE MAXIMUM RATINGS Table 8. Parameter Supply Voltage Output Short-Circuit Current Maximum Voltage at −INx or +INx Minimum Voltage at −INx or +INx REFx Voltage Storage Temperature Range Specified Temperature Range Maximum Junction Temperature ESD Human Body Model Charged Device ...
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AD8426 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 10. Pin Function Descriptions Pin No. Mnemonic Description 1 −IN1 Negative Input, In-Amp 1 2 RG1 Gain-Setting Resistor Terminal, In-Amp 1 3 RG1 Gain-Setting Resistor Terminal, In-Amp 1 4 +IN1 Positive Input, In-Amp ...
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TYPICAL PERFORMANCE CHARACTERISTICS T = 25° ± kΩ, unless otherwise noted IN-AMP 1 60 IN-AMP –100 –50 0 CMRR (µV/V) Figure 3. Typical Distribution ...
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AD8426 2.5 +0.01V, +1.90V +1.35V, +1.95V 2.0 1.5 +0.01V, +1.28V 1.0 +2.17V, +0.90V REF 0.5 +0.01V, +0.31V 0 –0.5 +1.35V, –0.41V 0.00V, –0.45V –1.0 –0.5 0 0.5 1.0 1.5 OUTPUT VOLTAGE (V) Figure 9. Input Common-Mode Voltage ...
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V 0V, +14. –14.9V, +6.7V 0V, +11.2V 5 –11.9V, +5.2V +11.9V, +5. ±12V S 0 –5 –11.9V, –6.0V +11.8V, –6.5V 0V, –12.3V –10 –14.9V, –7.6V –15 0V, –15.3V –20 –20 –15 –10 – ...
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AD8426 –0.12V –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, Single Supply 160 GAIN = 1000 140 ...
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GAIN = 1000 140 GAIN = 100 GAIN = 10 120 GAIN = 1 100 0 100 1k FREQUENCY (Hz) Figure 27. CMRR vs. Frequency, RTI 120 GAIN = 100 GAIN = ...
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AD8426 +V S –40°C +25°C +85°C –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 +25°C –0.3 +85°C ...
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OUTPUT VOLTAGE (V) Figure 39. Gain Nonlinearity, R ≥ 10 kΩ OUTPUT VOLTAGE (V) Figure 40. Gain Nonlinearity, R ≥ 10 kΩ 100 L OUTPUT VOLTAGE (V) Figure 41. Gain Nonlinearity, R ≥ 10 ...
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AD8426 1.5pA/DIV Figure 45. 0 Current Noise ±15V + 100 1k 10k FREQUENCY (Hz) Figure 46. Large Signal Frequency ...
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Figure 51. Small Signal Pulse Response kΩ 20mV/DIV Figure 52. Small Signal Pulse Response kΩ 20mV/DIV Figure 53. Small Signal Pulse Response kΩ 4µs/DIV ...
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AD8426 760 740 720 700 680 660 640 620 SUPPLY VOLTAGE (±V Figure 57. Supply Current vs. Supply Voltage (Both Amplifiers) 200 180 GAIN = 1000 160 140 120 GAIN = 1 100 80 ...
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THEORY OF OPERATION NODE 3 ESD AND +IN OVERVOLTAGE Q1 PROTECTION R B ARCHITECTURE The AD8426 is based on the classic 3-op-amp topology. This topology has two stages: a gain stage (preamplifier) to provide differential amplification, followed by a difference ...
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AD8426 REFERENCE TERMINAL The output voltage of the AD8426 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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LAYOUT To ensure optimum performance of the level, care must be taken in the design of the board layout. The AD8426 pins are arranged in a logical manner to aid in this task AD8426 1 –IN1 ...
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AD8426 INPUT BIAS CURRENT RETURN PATH The input bias current of the AD8426 must have a return path to ground. When the source, such as a thermocouple, cannot provide a current return path, one should be created, as shown in ...
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APPLICATIONS INFORMATION PRECISION STRAIN GAGE The low offset and high CMRR over frequency of the make it an excellent candidate for bridge measurements. The bridge can be connected directly to the inputs of the amplifier (see Figure 68). 10µF 0.1µF ...
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AD8426 Tips for Best Differential Output Performance Keep trace lengths from resistors to the inverting terminal of the op amp as short as possible. Excessive capacitance at this node can cause the circuit to be unstable. If capacitance cannot be ...
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DRIVING AN ADC Figure 72 shows several different methods of 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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... MAX 1.00 0.85 0.80 SEATING PLANE ORDERING GUIDE 1 Model Temperature Range AD8426ACPZ-R7 −40°C to +125°C AD8426ACPZ-WP −40°C to +125°C AD8426BCPZ-R7 −40°C to +125°C AD8426BCPZ-WP −40°C to +125° RoHS Compliant Part. ©2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...