Datasheet AD8418A (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Bidirectional, Zero-Drift, Current Sense Amplifier |
| 页数 / 页 | 17 / 6 — AD8418A. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 100. ( E. B) d. … |
| 修订版 | D |
| 文件格式/大小 | PDF / 421 Kb |
| 文件语言 | 英语 |
AD8418A. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. 100. ( E. B) d. LT O. –10. N ( AI. T V E. G –20. OFFS. –30. –40. –50. –60. –25. 110. 125. 10k. 100k
文件文字版本
AD8418A Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 100 40 90 30 80 20 V) 70 µ 10 ( E 60 0 AG B) d LT O 50 –10 N ( AI T V E 40 G –20 OFFS 30 –30 20 –40 10 –50 0 –60 –40 –25 –10 5 20 35 50 65 80 95 110 125
003
1k 10k 100k 1M 10M
006
TEMPERATURE (°C)
1883- 1
FREQUENCY (Hz)
1883- 1 Figure 3. Typical Offset Drift vs. Temperature Figure 6. Typical Small Signal Bandwidth (VOUT = 200 mV p-p)
110 20 18 100 16 %) 14 90 R ( 12 B) RRO d E 10 80 UT RR ( P 8 CM UT O 6 70 L A T 4 O T 60 2 0 50 –2 10 100 1k 10k 100k 1M
004
0 5 10 15 20 25 30 35 40
007
FREQUENCY (Hz)
1883- 1
DIFFERENTIAL INPUT VOLTAGE (mV)
1883- 1 Figure 4. Typical CMRR vs. Frequency Figure 7. Total Output Error vs. Differential Input Voltage
400 0.5 NORMALIZED AT 25°C VS = 5V 0.4 300 mA) 0.3 200 IN ( ) P 0.2 +IN /V V 100 UT µ 0.1 NP R ( R I –IN 0 E 0 RRO P N E NT –0.1 –100 AI G –0.2 –200 CURRE –0.3 AS BI –300 –0.4 –400 –0.5 –40 –25 –10 5 20 35 50 65 80 95 110 125
005
–4 0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68
108
TEMPERATURE (°C)
1883- 1
VCM (V)
1883- 1 Figure 5. Typical Gain Error vs. Temperature Figure 8. Bias Current per Input Pin vs. Common-Mode Voltage (VCM) Rev. D | Page 6 of 17 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OUTPUT OFFSET ADJUSTMENT UNIDIRECTIONAL OPERATION Ground Referenced Output Mode VS Referenced Output Mode BIDIRECTIONAL OPERATION EXTERNAL REFERENCED OUTPUT SPLITTING THE SUPPLY SPLITTING AN EXTERNAL REFERENCE APPLICATIONS INFORMATION MOTOR CONTROL 3-Phase Motor Control H-Bridge Motor Control SOLENOID CONTROL High-Side Current Sense with a Low-Side Switch High-Side Current Sense with a High-Side Switch High Rail Current Sensing OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS
003
1k 10k 100k 1M 10M
006
TEMPERATURE (°C)
1883- 1
FREQUENCY (Hz)
1883- 1 Figure 3. Typical Offset Drift vs. Temperature Figure 6. Typical Small Signal Bandwidth (VOUT = 200 mV p-p)
110 20 18 100 16 %) 14 90 R ( 12 B) RRO d E 10 80 UT RR ( P 8 CM UT O 6 70 L A T 4 O T 60 2 0 50 –2 10 100 1k 10k 100k 1M
004
0 5 10 15 20 25 30 35 40
007
FREQUENCY (Hz)
1883- 1
DIFFERENTIAL INPUT VOLTAGE (mV)
1883- 1 Figure 4. Typical CMRR vs. Frequency Figure 7. Total Output Error vs. Differential Input Voltage
400 0.5 NORMALIZED AT 25°C VS = 5V 0.4 300 mA) 0.3 200 IN ( ) P 0.2 +IN /V V 100 UT µ 0.1 NP R ( R I –IN 0 E 0 RRO P N E NT –0.1 –100 AI G –0.2 –200 CURRE –0.3 AS BI –300 –0.4 –400 –0.5 –40 –25 –10 5 20 35 50 65 80 95 110 125
005
–4 0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68
108
TEMPERATURE (°C)
1883- 1
VCM (V)
1883- 1 Figure 5. Typical Gain Error vs. Temperature Figure 8. Bias Current per Input Pin vs. Common-Mode Voltage (VCM) Rev. D | Page 6 of 17 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OUTPUT OFFSET ADJUSTMENT UNIDIRECTIONAL OPERATION Ground Referenced Output Mode VS Referenced Output Mode BIDIRECTIONAL OPERATION EXTERNAL REFERENCED OUTPUT SPLITTING THE SUPPLY SPLITTING AN EXTERNAL REFERENCE APPLICATIONS INFORMATION MOTOR CONTROL 3-Phase Motor Control H-Bridge Motor Control SOLENOID CONTROL High-Side Current Sense with a Low-Side Switch High-Side Current Sense with a High-Side Switch High Rail Current Sensing OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS