Datasheet AD8428 (Analog Devices) - 8
| Fabricante | Analog Devices |
| Descripción | Low Noise, Low Gain Drift, G = 2000 Instrumentation Amplifier |
| Páginas / Página | 20 / 8 — AD8428. Data Sheet. 72 66. S = ±15V. ( E. S = ±12V. A T. V E. B d. S = … |
| Revisión | A |
| Formato / tamaño de archivo | PDF / 363 Kb |
| Idioma del documento | Inglés |
AD8428. Data Sheet. 72 66. S = ±15V. ( E. S = ±12V. A T. V E. B d. S = ±5V. T C U. –10. –15. –12. 100. 10k. 100k. 10M. 100M. OUTPUT VOLTAGE (V). FREQUENCY (Hz)
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AD8428 Data Sheet 15 72 66 ) V V S = ±15V 10 60 ( E V 54 G S = ±12V A T 48 L 5 O 42 V E ) 36 V B d OD S = ±5V 0 ( 30 -M IN 24 ON GA M 18 M –5 O 12 T C U 6 P –10 IN 0 –6 –15
9
–12
14
–15 –10 –5 0 5 10 15
00
100 1k 10k 100k 1M 10M 100M
0 1- 1-
OUTPUT VOLTAGE (V)
73 73 09
FREQUENCY (Hz)
09 Figure 9. Input Common-Mode Voltage vs. Output Voltage, Figure 12. Gain vs. Frequency VS = ±5 V, VS = ±12 V, VS = ±15 V
18 170 VCM = –11.8V GAIN = 2000 16 160 14 150 A) n ( 12 140 NT B) 10 d 130 CURRE RR ( 8 120 AS CM BI 110 UT 6 INP 4 100 2 90 VCM = +12V 0 80
5
–14 –12 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14
010
1 10 100 1k 10k 100k 1M
01 1- 31- 73
COMMON-MODE VOLTAGE (V)
97 0
FREQUENCY (Hz)
09 Figure 10. Input Bias Current vs. Common-Mode Voltage, Figure 13. CMRR vs. Frequency VS = ±15 V
140 120 GAIN = 2000 110 120 100 90 100 +PSRR –PSRR 80 B) 80 B) 70 d d R ( 60 R RR ( S P 60 CM 50 40 40 30 20 20 10 0 0
6 11
0.1 1 10 100 1k 10k 100k 1M
0 01 1-
1 10 100 1k 10k 100k 1M
1- 73 73
FREQUENCY (Hz)
09
FREQUENCY (Hz)
09 Figure 11. PSRR vs. Frequency Figure 14. CMRR vs. Frequency, 1 kΩ Source Imbalance Rev. A | Page 8 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
9
–12
14
–15 –10 –5 0 5 10 15
00
100 1k 10k 100k 1M 10M 100M
0 1- 1-
OUTPUT VOLTAGE (V)
73 73 09
FREQUENCY (Hz)
09 Figure 9. Input Common-Mode Voltage vs. Output Voltage, Figure 12. Gain vs. Frequency VS = ±5 V, VS = ±12 V, VS = ±15 V
18 170 VCM = –11.8V GAIN = 2000 16 160 14 150 A) n ( 12 140 NT B) 10 d 130 CURRE RR ( 8 120 AS CM BI 110 UT 6 INP 4 100 2 90 VCM = +12V 0 80
5
–14 –12 –10 –8 –6 –4 –2 0 2 4 6 8 10 12 14
010
1 10 100 1k 10k 100k 1M
01 1- 31- 73
COMMON-MODE VOLTAGE (V)
97 0
FREQUENCY (Hz)
09 Figure 10. Input Bias Current vs. Common-Mode Voltage, Figure 13. CMRR vs. Frequency VS = ±15 V
140 120 GAIN = 2000 110 120 100 90 100 +PSRR –PSRR 80 B) 80 B) 70 d d R ( 60 R RR ( S P 60 CM 50 40 40 30 20 20 10 0 0
6 11
0.1 1 10 100 1k 10k 100k 1M
0 01 1-
1 10 100 1k 10k 100k 1M
1- 73 73
FREQUENCY (Hz)
09
FREQUENCY (Hz)
09 Figure 11. PSRR vs. Frequency Figure 14. CMRR vs. Frequency, 1 kΩ Source Imbalance Rev. A | Page 8 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