AD8295ACPZ-RL Analog Devices Inc, AD8295ACPZ-RL Datasheet
AD8295ACPZ-RL
Specifications of AD8295ACPZ-RL
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AD8295ACPZ-RL Summary of contents
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FEATURES Saves board space Includes precision in-amp amps, and 2 matched resistors 4 mm × LFCSP No heat slug for more routing room Differential output fully specified In-amp specifications Gain set with 1 external resistor (gain ...
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AD8295 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Connection Diagram ....................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Instrumentation Amplifier Specifications, Single-Ended and Differential Output Configurations ........................................... 3 Op Amp Specifications ................................................................ 5 ...
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SPECIFICATIONS INSTRUMENTATION AMPLIFIER SPECIFICATIONS, SINGLE-ENDED AND DIFFERENTIAL OUTPUT CONFIGURATIONS V = ± 25° REF A Table 2. Parameter Test Conditions COMMON-MODE REJECTION V CM RATIO (CMRR) CMRR, DC ...
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AD8295 Parameter Test Conditions GAIN (49.4 kΩ/R Gain Range Gain Error V OUT 100 G = 1000 Gain Nonlinearity V OUT ...
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Parameter Test Conditions INPUT Input Impedance Differential Common Mode 1 Input Operating Voltage Range V S Over Temperature Input Operating Voltage Range V S Over Temperature T A OUTPUT R L Output Swing V S Over Temperature ...
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AD8295 INTERNAL RESISTOR NETWORK When used with internal Op Amp A1, T Table 4. Parameter Nominal Resistor Value Resistor Matching Matching Temperature Coefficient Absolute Resistor Accuracy Absolute Temperature Coefficient POWER AND TEMPERATURE SPECIFICATIONS V = ± ...
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ABSOLUTE MAXIMUM RATINGS Table 6. Parameter Supply Voltage Output Short-Circuit Current Input Voltage Common-Mode Differential Storage Temperature Range 1 Operating Temperature Range Lead Temperature (Soldering, 10 sec) Junction Temperature ESD (Human Body Model) ESD (Charged Device Model) ESD (Machine Model) ...
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AD8295 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 8. Pin Function Descriptions Pin No. Mnemonic Description 1 −IN In-Amp Negative Input In-Amp Gain-Setting Resistor Terminals +IN In-Amp Positive Input. 5 −V Negative Supply REF ...
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TYPICAL PERFORMANCE CHARACTERISTICS IN-AMP V = ± 25° kΩ, unless otherwise noted. S REF A L 800 600 400 200 0 –100 –50 0 CMRR (µV/V) Figure 3. Typical Distribution ...
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AD8295 –1 –2 –3 –4 –5 –4 –3 –2 – OUTPUT VOLTAGE (V) Figure 9. Input Common-Mode Voltage Range vs. Output Voltage 100 ±2.5 V, ± ...
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GAIN = 1000 140 GAIN = 100 GAIN = 10 120 GAIN = 1 100 0 100 1k 10k FREQUENCY (Hz) Figure 15. Negative PSRR vs. Frequency, RTI ...
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AD8295 +V – –0 10kΩ L –0.8 –1.2 –1.6 +1.6 +1.2 +0 10kΩ L +0.4 – SUPPLY VOLTAGE (V) Figure 21. Output Voltage Swing vs. Supply Voltage, G ...
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Figure 27. 0 RTI Voltage Noise 0.1µV/DIV Figure 28. 0 RTI Voltage Noise 1000 1k 100 100 1k FREQUENCY (Hz) Figure 29. Current ...
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AD8295 5V/DIV 4.8µs TO 0.01% 6.6µs TO 0.001% 0.002%/DIV Figure 33. Large Signal Pulse Response and Settling Time 5V/DIV 9.2µs TO 0.01% 16.2µs TO 0.001% 0.002%/DIV Figure 34. Large Signal Pulse Response and Settling Time ...
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Figure 39. Small Signal Pulse Response 1000 SETTLED TO 0.001% SETTLED TO 0.01 OUTPUT VOLTAGE STEP SIZE (V) Figure 40. Settling Time vs. Output Voltage Step Size ...
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AD8295 OP AMPS V = ± 25° kΩ, Op Amp A1 and Op Amp A2, unless otherwise noted 100 80 OPEN-LOOP GAIN 60 PHASE –20 –40 10 100 ...
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TIME (Sec) Figure 48. 0 Noise 1k 100 100 1k FREQUENCY (Hz) Figure 49. Current Noise Density ...
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AD8295 SYSTEM V = ± 25°C, unless otherwise noted. S REF A 170 GAIN = 1000 150 130 GAIN = 1 110 100 1k 10k FREQUENCY (Hz) Figure 53. ...
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THEORY OF OPERATION As shown in Figure 58, the AD8295 contains a precision instrumentation amplifier, two uncommitted op amps, and a precision resistor array. These components allow many common applications to be wired using simple pin-strapping, directly at the IC. ...
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AD8295 Reference Terminal The output voltage of the AD8295 instrumentation amplifier is developed with respect to the potential on the reference terminal (REF). This is useful when the output signal needs to be offset to a precise dc level. The ...
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Power Supplies A stable dc voltage should be used to power the instrumentation amplifier. Noise on the supply pins can adversely affect perfor- mance. See the PSRR performance curves in Figure 14 and Figure 15 for more information. A 0.1 ...
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AD8295 +V S 0.1µF C 1nF C R +IN 4.02kΩ AD8295 10nF D IN-AMP R –IN 4.02kΩ C 1nF C 0.1µF –V S Figure 63. RFI Suppression Lower cutoff frequencies improve RFI robustness. Accuracy of the C ...
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APPLICATIONS INFORMATION CREATING A REFERENCE VOLTAGE AT MIDSCALE A reference voltage other than ground is often useful, for example, when driving a single-supply ADC. Creating a reference voltage derived from a voltage divider is straight- forward with the AD8295 (see ...
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AD8295 TWO-POLE SALLEN-KEY FILTER Figure 69 shows the in-amp output section of the AD8295 being low-pass filtered using a two-pole Sallen-Key filter. The filter section consists of Op Amp A2, External Resistors R1 and R2, as well as Capacitors C1 ...
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DRIVING DIFFERENTIAL ADCs Figure 71 shows how to configure the AD8295 to drive a differ- ential ADC. The circuit shown uses very little board space and consumes little power. With the AD7690, this configuration gives excellent dc performance and a ...
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... INDICATOR 1.00 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range 1 AD8295ACPZ-R7 −40°C to +85°C 1 AD8295ACPZ-RL −40°C to +85°C AD8295ACPZ-WP 1 −40°C to +85°C 1 AD8295BCPZ-R7 −40°C to +85°C 1 AD8295BCPZ-RL −40°C to +85°C 1 AD8295BCPZ-WP −40°C to +85° RoHS Compliant Part ...
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NOTES Rev Page AD8295 ...
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AD8295 NOTES ©2008–2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07343-0-6/09(A) Rev Page ...