Datasheet AD8476 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | Low Power, Unity Gain Fully Differential Amplifier & ADC Driver |
| 页数 / 页 | 24 / 8 — AD8476. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. NORMALIZED TO … |
| 修订版 | B |
| 文件格式/大小 | PDF / 516 Kb |
| 文件语言 | 英语 |
AD8476. Data Sheet. TYPICAL PERFORMANCE CHARACTERISTICS. NORMALIZED TO 25°C. VS = ±5V. E (V). VS = ±2.5V. V/ (µ. E VO. –10. -MO N. –20. MMO O
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AD8476 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VS = +5 V, G = 1, VOCM connected to 2.5 V, RL = 2 kΩ differential y, TA = 25°C, referred to output (RTO), unless otherwise noted.
50 15 NORMALIZED TO 25°C 40 VS = ±5V 10 30 E (V) 20 G VS = ±2.5V A 5 T V) 10 L V/ (µ 0 E VO 0 R D MR –10 C -MO N –5 –20 MMO O –30 C –10 –40 –50 –15 –40 –25 –10 5 20 35 50 65 80 95 110 125
005
–15 –10 –5 0 5 10 15
008
TEMPERATURE (°C) OUTPUT VOLTAGE (V)
10195- 10195- Figure 5. CMRR vs. Temperature Figure 8. Input Common-Mode Voltage vs. Output Voltage, VS = ±5 V and ±2.5 V
1500 115 NORMALIZED TO 25°C V 1300 S = ±5V 110 VS = +5V 1100 900 105 ) 700 V µ 100 ( 500 GE 300 95 B) 100 d OLTA 90 –100 RR ( T V E –300 CM 85 –500 80 OFFS –700 –900 75 –1100 70 –1300 –1500 65 –40 –25 –10 5 20 35 50 65 80 95 110 125
006
10 100 1k 10k 100k 1M
010
TEMPERATURE (°C) FREQUENCY (Hz)
10195- 10195- Figure 6. System Offset Temperature Drift Figure 9. Common-Mode Rejection vs. Frequency
150 –20 NORMALIZED TO 25°C VS = ±5V V –30 S = +5V 100 –40 ) /V 50 V µ –50 B) R ( d 0 –60 RRO RR ( S N E P –70 AI –50 G –80 –100 –90 –150 –100 –40 –25 –10 5 20 35 50 65 80 95 110 125
007
100 1k 10k 100k 1M 10M
011
TEMPERATURE (°C) FREQUENCY (Hz)
10195- 10195- Figure 7. Gain Error vs. Temperature Figure 10. Power Supply Rejection vs. Frequency Rev. B | Page 8 of 24 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance Maximum Power Dissipation ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Overview Circuit Information Output Common-Mode Voltage (VOCM) DC Precision Input Voltage Range Driving the AD8476 Power Supplies Applications Information Typical Configuration Single-Ended-to-Differential Conversion Setting the Output Common-Mode Voltage Low Power ADC Driving Outline Dimensions Ordering Guide
VS = +5 V, G = 1, VOCM connected to 2.5 V, RL = 2 kΩ differential y, TA = 25°C, referred to output (RTO), unless otherwise noted.
50 15 NORMALIZED TO 25°C 40 VS = ±5V 10 30 E (V) 20 G VS = ±2.5V A 5 T V) 10 L V/ (µ 0 E VO 0 R D MR –10 C -MO N –5 –20 MMO O –30 C –10 –40 –50 –15 –40 –25 –10 5 20 35 50 65 80 95 110 125
005
–15 –10 –5 0 5 10 15
008
TEMPERATURE (°C) OUTPUT VOLTAGE (V)
10195- 10195- Figure 5. CMRR vs. Temperature Figure 8. Input Common-Mode Voltage vs. Output Voltage, VS = ±5 V and ±2.5 V
1500 115 NORMALIZED TO 25°C V 1300 S = ±5V 110 VS = +5V 1100 900 105 ) 700 V µ 100 ( 500 GE 300 95 B) 100 d OLTA 90 –100 RR ( T V E –300 CM 85 –500 80 OFFS –700 –900 75 –1100 70 –1300 –1500 65 –40 –25 –10 5 20 35 50 65 80 95 110 125
006
10 100 1k 10k 100k 1M
010
TEMPERATURE (°C) FREQUENCY (Hz)
10195- 10195- Figure 6. System Offset Temperature Drift Figure 9. Common-Mode Rejection vs. Frequency
150 –20 NORMALIZED TO 25°C VS = ±5V V –30 S = +5V 100 –40 ) /V 50 V µ –50 B) R ( d 0 –60 RRO RR ( S N E P –70 AI –50 G –80 –100 –90 –150 –100 –40 –25 –10 5 20 35 50 65 80 95 110 125
007
100 1k 10k 100k 1M 10M
011
TEMPERATURE (°C) FREQUENCY (Hz)
10195- 10195- Figure 7. Gain Error vs. Temperature Figure 10. Power Supply Rejection vs. Frequency Rev. B | Page 8 of 24 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance Maximum Power Dissipation ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Overview Circuit Information Output Common-Mode Voltage (VOCM) DC Precision Input Voltage Range Driving the AD8476 Power Supplies Applications Information Typical Configuration Single-Ended-to-Differential Conversion Setting the Output Common-Mode Voltage Low Power ADC Driving Outline Dimensions Ordering Guide