Datasheet AD8428 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | Low Noise, Low Gain Drift, G = 2000 Instrumentation Amplifier |
| Pages / Page | 20 / 9 — Data Sheet. AD8428. REPRESENTATIVE DATA. NORMALIZED AT 25°C. E ( G. A T … |
| Revision | A |
| File Format / Size | PDF / 363 Kb |
| Document Language | English |
Data Sheet. AD8428. REPRESENTATIVE DATA. NORMALIZED AT 25°C. E ( G. A T L. ) /V. SET. O T. RR (. N I N. E I G. –10. N A. H C. –20. –30. 100 110 120
Model Line for this Datasheet
Text Version of Document
Data Sheet AD8428 5 70 ) REPRESENTATIVE DATA NORMALIZED AT 25°C V 60 µ 4 E ( G 50 A T L 3 40 VO ) /V 30 SET 2 V F n F 20 O T 1 RR ( 10 PU CM N I N 0 0 E I G –10 N A –1 H C –20 –2 –30
0
0 10 20 30 40 50 60 70 80 90 100 110 120
17 0
–40 –25 –10 5 20 35 50 65 80 95 110 125
02 1- 1-
WARM-UP TIME (Seconds)
73
TEMPERATURE (°C)
73 09 09 Figure 15. Change in Input Offset Voltage (VOSI) vs. Warm-Up Time Figure 18. CMRR vs. Temperature, Normalized at 25°C
15 1.2 9.0 IOS 10 IBIAS+ 0.8 8.5 5 0.4 A) A) n I 8.0 n BIAS– ( ( A) 0 0 NT NT (m 7.5 NT –5 –0.4 E CURRE 7.0 CURRE T E –10 –0.8 AS S CURR F Y BI F L 6.5 –15 –1.2 P O UT UT UP S INP 6.0 –20 –1.6 INP –25 –2.0 5.5 NORMALIZED AT 25°C –30 –2.4 5.0
1 18
–40 –25 –10 5 20 35 50 65 80 95 110 125
0
–40 –25 –10 5 20 35 50 65 80 95 110 125
02 1- 1- 73
TEMPERATURE (°C)
973
TEMPERATURE (°C)
0 09 Figure 16. Input Bias Current and Input Offset Current vs. Temperature, Figure 19. Supply Current vs. Temperature Normalized at 25°C
250 50 ISHORT+ 200 40 30 150 A) m ( ) 20 /V 100 NT V µ ( 10 50 OR CURRE R T 0 R 0 E –10 IN RCUI GA –50 -CI –20 RT –100 HO I S –30 SHORT– –150 –40 REPRESENTATIVE DATA NORMALIZED AT 25°C –200
9
–50
2
–40 –25 –10 5 20 35 50 65 80 95 110 125
01 -02 1-
–40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C)
73 731 09
TEMPERATURE (°C)
09 Figure 17. Gain Error vs. Temperature, Normalized at 25°C Figure 20. Short-Circuit Current vs. Temperature Rev. A | Page 9 of 20 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ARCHITECTURE FILTER TERMINALS REFERENCE TERMINAL INPUT VOLTAGE RANGE LAYOUT Common-Mode Rejection Ratio over Frequency Power Supplies and Grounding Reference Pin INPUT BIAS CURRENT RETURN PATH INPUT PROTECTION IMAX Input Voltages Beyond the Rails Large Differential Input Voltage at High Gain RADIO FREQUENCY INTERFERENCE (RFI) CALCULATING THE NOISE OF THE INPUT STAGE Source Resistance Noise Voltage Noise of the Instrumentation Amplifier Current Noise of the Instrumentation Amplifier Total Noise Density Calculation APPLICATIONS INFORMATION EFFECT OF PASSIVE NETWORK ACROSS THE FILTER TERMINALS CIRCUITS USING THE FILTER TERMINALS Setting the Amplifier to Different Gains Low-Pass Filter Notch Filter Extracting the Common-Mode Voltage of the Input OUTLINE DIMENSIONS ORDERING GUIDE
0
0 10 20 30 40 50 60 70 80 90 100 110 120
17 0
–40 –25 –10 5 20 35 50 65 80 95 110 125
02 1- 1-
WARM-UP TIME (Seconds)
73
TEMPERATURE (°C)
73 09 09 Figure 15. Change in Input Offset Voltage (VOSI) vs. Warm-Up Time Figure 18. CMRR vs. Temperature, Normalized at 25°C
15 1.2 9.0 IOS 10 IBIAS+ 0.8 8.5 5 0.4 A) A) n I 8.0 n BIAS– ( ( A) 0 0 NT NT (m 7.5 NT –5 –0.4 E CURRE 7.0 CURRE T E –10 –0.8 AS S CURR F Y BI F L 6.5 –15 –1.2 P O UT UT UP S INP 6.0 –20 –1.6 INP –25 –2.0 5.5 NORMALIZED AT 25°C –30 –2.4 5.0
1 18
–40 –25 –10 5 20 35 50 65 80 95 110 125
0
–40 –25 –10 5 20 35 50 65 80 95 110 125
02 1- 1- 73
TEMPERATURE (°C)
973
TEMPERATURE (°C)
0 09 Figure 16. Input Bias Current and Input Offset Current vs. Temperature, Figure 19. Supply Current vs. Temperature Normalized at 25°C
250 50 ISHORT+ 200 40 30 150 A) m ( ) 20 /V 100 NT V µ ( 10 50 OR CURRE R T 0 R 0 E –10 IN RCUI GA –50 -CI –20 RT –100 HO I S –30 SHORT– –150 –40 REPRESENTATIVE DATA NORMALIZED AT 25°C –200
9
–50
2
–40 –25 –10 5 20 35 50 65 80 95 110 125
01 -02 1-
–40 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C)
73 731 09
TEMPERATURE (°C)
09 Figure 17. Gain Error vs. Temperature, Normalized at 25°C Figure 20. Short-Circuit Current vs. Temperature Rev. A | Page 9 of 20 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ARCHITECTURE FILTER TERMINALS REFERENCE TERMINAL INPUT VOLTAGE RANGE LAYOUT Common-Mode Rejection Ratio over Frequency Power Supplies and Grounding Reference Pin INPUT BIAS CURRENT RETURN PATH INPUT PROTECTION IMAX Input Voltages Beyond the Rails Large Differential Input Voltage at High Gain RADIO FREQUENCY INTERFERENCE (RFI) CALCULATING THE NOISE OF THE INPUT STAGE Source Resistance Noise Voltage Noise of the Instrumentation Amplifier Current Noise of the Instrumentation Amplifier Total Noise Density Calculation APPLICATIONS INFORMATION EFFECT OF PASSIVE NETWORK ACROSS THE FILTER TERMINALS CIRCUITS USING THE FILTER TERMINALS Setting the Amplifier to Different Gains Low-Pass Filter Notch Filter Extracting the Common-Mode Voltage of the Input OUTLINE DIMENSIONS ORDERING GUIDE
