Datasheet AD8420 (Analog Devices) - 9
| 制造商 | Analog Devices |
| 描述 | Wide Supply Range, Micropower, Rail-to-Rail Instrumentation Amplifier |
| 页数 / 页 | 26 / 9 — Data Sheet. AD8420. TYPICAL PERFORMANCE CHARACTERISTICS. MEAN: –34.8195. … |
| 修订版 | A |
| 文件格式/大小 | PDF / 467 Kb |
| 文件语言 | 英语 |
Data Sheet. AD8420. TYPICAL PERFORMANCE CHARACTERISTICS. MEAN: –34.8195. 700 MEAN: 4.63764. 700. SD: 31.3406. SD: 1.09498. 600. 500. 400. R O
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Data Sheet AD8420 TYPICAL PERFORMANCE CHARACTERISTICS
T = 25°C, +VS = 5 V, RL = 20 kΩ, unless otherwise noted.
MEAN: –34.8195 700 MEAN: 4.63764 700 SD: 31.3406 SD: 1.09498 600 600 S S 500 500 IT T H HI F F 400 400 R O R O E BE B 300 300 NUM NUM 200 200 100 100 0 0
3 8
–150 –100 –50 0 50 100 150
-00
0 2 4 6 8 10
-00
V
45 45
OS (µV) CMRR, ±15V (µV/V)
099 099 Figure 3. Typical Distribution of Input Offset Voltage Figure 6. Typical Distribution of CMRR
MEAN: 22.6643 700 MEAN: 22.706 700 SD: 0.6058 SD: 0.615728 600 600 500 S T 500 S IT HI F H F 400 400 R O R O E B BE 300 300 NUM NUM 200 200 100 100 0 0
4 6
20 21 22 23 24 25
-00
20 21 22 23 24 25
-00
POSITIVE BIAS CURRENT (nA)
45 945 9
g
0
m2 POSITIVE BIAS CURRENT (nA)
099 Figure 4. Typical Distribution of Input Bias Current Figure 7. Typical Distribution of REF, FB Bias Current
1200 MEAN: 0.000646761 1200 MEAN: 0.00144205 SD: 0.111551 SD: 0.112088 1000 1000 S 800 S T 800 IT HI H F F R O 600 R O 600 E B BE NUM 400 NUM 400 200 200 0 0
5
–0.9 –0.6 –0.3 0 0.3 0.6 0.9
07 -00
–0.9 –0.6 –0.3 0 0.3 0.6 0.9
0 5-
OFFSET CURRENT (nA)
945
g
94 09
m2 OFFSET CURRENT (nA)
09 Figure 5. Typical Distribution of Input Offset Current Figure 8. Typical Distribution of REF, FB Offset Current Rev. A | Page 9 of 26 Document Outline FEATURES APPLICATIONS PIN CONFIGURATION 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 SETTING THE GAIN GAIN ACCURACY INPUT VOLTAGE RANGE INPUT PROTECTION Input Voltages Beyond the Rails Large Differential Input Voltage LAYOUT Common-Mode Rejection Ratio over Frequency Power Supplies Reference DRIVING THE REFERENCE PIN INPUT BIAS CURRENT RETURN PATH RADIO FREQUENCY INTERFERENCE (RFI) OUTPUT BUFFERING APPLICATIONS INFORMATION AD8420 IN ELECTROCARDIOGRAPHY (ECG) CLASSIC BRIDGE CIRCUIT 4 mA TO 20 mA SINGLE-SUPPLY RECEIVER OUTLINE DIMENSIONS ORDERING GUIDE
T = 25°C, +VS = 5 V, RL = 20 kΩ, unless otherwise noted.
MEAN: –34.8195 700 MEAN: 4.63764 700 SD: 31.3406 SD: 1.09498 600 600 S S 500 500 IT T H HI F F 400 400 R O R O E BE B 300 300 NUM NUM 200 200 100 100 0 0
3 8
–150 –100 –50 0 50 100 150
-00
0 2 4 6 8 10
-00
V
45 45
OS (µV) CMRR, ±15V (µV/V)
099 099 Figure 3. Typical Distribution of Input Offset Voltage Figure 6. Typical Distribution of CMRR
MEAN: 22.6643 700 MEAN: 22.706 700 SD: 0.6058 SD: 0.615728 600 600 500 S T 500 S IT HI F H F 400 400 R O R O E B BE 300 300 NUM NUM 200 200 100 100 0 0
4 6
20 21 22 23 24 25
-00
20 21 22 23 24 25
-00
POSITIVE BIAS CURRENT (nA)
45 945 9
g
0
m2 POSITIVE BIAS CURRENT (nA)
099 Figure 4. Typical Distribution of Input Bias Current Figure 7. Typical Distribution of REF, FB Bias Current
1200 MEAN: 0.000646761 1200 MEAN: 0.00144205 SD: 0.111551 SD: 0.112088 1000 1000 S 800 S T 800 IT HI H F F R O 600 R O 600 E B BE NUM 400 NUM 400 200 200 0 0
5
–0.9 –0.6 –0.3 0 0.3 0.6 0.9
07 -00
–0.9 –0.6 –0.3 0 0.3 0.6 0.9
0 5-
OFFSET CURRENT (nA)
945
g
94 09
m2 OFFSET CURRENT (nA)
09 Figure 5. Typical Distribution of Input Offset Current Figure 8. Typical Distribution of REF, FB Offset Current Rev. A | Page 9 of 26 Document Outline FEATURES APPLICATIONS PIN CONFIGURATION 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 SETTING THE GAIN GAIN ACCURACY INPUT VOLTAGE RANGE INPUT PROTECTION Input Voltages Beyond the Rails Large Differential Input Voltage LAYOUT Common-Mode Rejection Ratio over Frequency Power Supplies Reference DRIVING THE REFERENCE PIN INPUT BIAS CURRENT RETURN PATH RADIO FREQUENCY INTERFERENCE (RFI) OUTPUT BUFFERING APPLICATIONS INFORMATION AD8420 IN ELECTROCARDIOGRAPHY (ECG) CLASSIC BRIDGE CIRCUIT 4 mA TO 20 mA SINGLE-SUPPLY RECEIVER OUTLINE DIMENSIONS ORDERING GUIDE