Datasheet AD8231 (Analog Devices) - 10

AD8231 Data Sheet 2000 6 VREF = MIDSUPPLY 0V, 4.96V VCM = MIDSUPPLY 5 1500 E (V) G A T A) L p 4 ( 1000 NT E VO D 5V SINGLE SUPPLY 4.92V, 2.5V 3 -MO N CURRE 500 AS 0V, 2.96V MMO 2 BI O C 3V SINGLE SUPPLY 3V T 0 PU 1 IN 0V, 0.04V 2.92V, 1.5V 5V –500 0 –40 –20 0 20 40 60 80 100 120
106
0 1 2 3 4 5 6
003
TEMPERATURE (°C)
06586-
OUTPUT VOLTAGE (V)
06586- Figure 9. Instrumentation Amplifier Bias Current vs. Temperature Figure 12. Instrumentation Amplifier Input Common-Mode Range vs. Output Voltage, All Gains, VREF = 0 V
2.0 6 1.5 1.5V, 4.96V 5 E (V) 1.0 G A T A) L 0.02V, 4.22V n 4 ( 0.5 5V SINGLE SUPPLY NT E VO D 1.5V, 2.96V 4.98V, 3.22V 0 3 -MO N CURRE –0.5 AS MMO 0.02V, 2.22V 2 2.98V, 2.22V BI O 4.98V, 1.78V –1.0 C 3V SINGLE SUPPLY T PU 1 2.98V, 0.78V –1.5 +VS = +2.5V IN 0.02V, 0.78V –VS = –2.5V 1.5V, 0.04V VREF = 0V –2.0 0 –2.5 –2.0 –1.5 –1.0 –0.5 0 0.5 1.0 1.5 2.0 2.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
006 004
VCM (V) OUTPUT VOLTAGE (V)
06586- 06586- Figure 10. Instrumentation Amplifier Bias Current vs. Figure 13. Instrumentation Amplifier Input Common-Mode Range vs. Common-Mode Voltage, 5 V Output Voltage, All Gains, VREF = 1.5 V
1.0 6 0.8 2.5V, 4.96V 5 0.6 E (V) G A 5V SINGLE SUPPLY 0.4 T A) L n 4 ( 0.2 0.02V, 3.72V 4.98V, 3.72V NT E VO D 0 3 -MO N 2.98V, 2.72V 2.5V, 2.96V CURRE –0.2 AS MMO 2 BI –0.4 O C 0.02V, 1.72V 3V SINGLE T 4.98V,1.28V –0.6 SUPPLY PU 1 +VS = +1.5V IN –0.8 –VS = –1.5V 0.02V, 1.28V 2.5V, 0.04V VREF = 0V 2.98V, 0.28V –1.0 0 –1.5 –1.2 –0.9 –0.6 –0.3 0 0.3 0.6 0.9 1.2 1.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
007 005
VCM (V) OUTPUT VOLTAGE (V)
06586- 06586- Figure 11. Instrumentation Amplifier Bias Current vs. Figure 14. Instrumentation Amplifier Input Common-Mode Range vs. Common-Mode Voltage, 3 V Output Voltage, All Gains, VREF = 2.5 V Rev. C | Page 10 of 24 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE MAXIMUM POWER DISSIPATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS INSTRUMENTATION AMPLIFIER PERFORMANCE CURVES OPERATIONAL AMPLIFIER PERFORMANCE CURVES PERFORMANCE CURVES VALID FOR BOTH AMPLIFIERS THEORY OF OPERATION AMPLIFIER ARCHITECTURE GAIN SELECTION REFERENCE TERMINAL LAYOUT Power Supplies Package Considerations Thermal Pad INPUT BIAS CURRENT RETURN PATH INPUT PROTECTION RF INTERFERENCE COMMON-MODE INPUT VOLTAGE RANGE REDUCING NOISE APPLICATIONS INFORMATION DIFFERENTIAL OUTPUT MULTIPLEXING USING THE AD8231 WITH BIPOLAR SUPPLIES SALLEN KEY FILTER OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS