Datasheet LT1008 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Picoamp Input Current, Microvolt Offset, Low Noise Op Amp |
| 页数 / 页 | 16 / 6 — TYPICAL PERFOR A CE CHARACTERISTICS. Supply Current vs Supply Voltage. … |
| 文件格式/大小 | PDF / 283 Kb |
| 文件语言 | 英语 |
TYPICAL PERFOR A CE CHARACTERISTICS. Supply Current vs Supply Voltage. Output Short-Circuit Current vs Time
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LT1008
W U TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Supply Voltage Output Short-Circuit Current vs Time
500 15 12 –55°C 9 450 μA) 6 SOURCING 25°C 125°C 3 400 0 25°C –3 125°C 125°C –6 SUPPLY CURRENT ( 350 25°C –55°C –9 SHORT-CIRCUIT CURRENT (mA) SINKING –12 –55°C 300 –15 0 5 10 15 20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 SUPPLY VOLTAGE (±V) TIME FROM OUTPUT SHORT (MINUTES) 1008 G07 1008 G08
0.1Hz to 10Hz Noise Noise Spectrum Total Noise vs Source Resistance
1000 10 T T T A = 25°C A = 25°C A = 25°C V V V S = ±2V TO ±20V S = ±2V TO ±20V S = ±2V TO ±20V √Hz) √Hz) √Hz) AT 10Hz μV/ AT 1Hz 100 1 R – CURRENT NOISE R + RS = 2R VOLTAGE NOISE 10 0.1 1/f CORNER 2.5Hz NOISE VOLTAGE (400nV/DIV) AT 1Hz 1/f CORNER TOTAL NOISE DENSITY ( VOLTAGE NOISE DENSITY (nV/ CURRENT NOISE DENSITY (fA/ 120Hz AT 10Hz RESISTOR NOISE ONLY 1 0.01 0 2 4 6 8 10 1 10 100 1000 102 103 104 105 106 107 108 TIME (SECONDS) FREQUENCY (Hz) SOURCE RESISTANCE (Ω) 1008 G10 1008 G09 1008 G11
Gain, Phase Shift vs Frequency Gain, Phase Shift vs Frequency with Standard (Feedback) Voltage Gain vs Frequency with Alternate Compensation Compensation
140 40 100 40 100 GAIN φ C 120 S = 10pF GAIN CF = 30pF C C F = 3pF 30 120 30 F = 3pF 120 100 φ PHASE SHIFT (DEG) φ PHASE SHIFT (DEG) C C S = 10pF φ CS = 100pF F = 3pF 80 20 CS = 10pF 140 20 GAIN 140 CS = 100pF GAIN CF = 30pF 60 C C S = 100pF F = 30pF GAIN (dB) 10 160 GAIN (dB) 10 160 40 VOLTAGE GAIN (dB) 20 PHASE MARGIN PHASE MARGIN 0 180 0 180 WITH CS = 100pF = 56° WITH CF = 30pF = 60° 0 TA = 25°C TA = 25°C VS = ±15V VS = ±15V –20 –10 200 –10 200 0.01 0.1 1 10 100 1k 10k 100k 1M 10M 0.01 0.1 1 10 0.01 0.1 1 10 FREQUENCY (Hz) FREQUENCY (MHz) FREQUENCY (MHz) 1008 G12 1008 G13 1008 G14 1008fb 6
W U TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Supply Voltage Output Short-Circuit Current vs Time
500 15 12 –55°C 9 450 μA) 6 SOURCING 25°C 125°C 3 400 0 25°C –3 125°C 125°C –6 SUPPLY CURRENT ( 350 25°C –55°C –9 SHORT-CIRCUIT CURRENT (mA) SINKING –12 –55°C 300 –15 0 5 10 15 20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 SUPPLY VOLTAGE (±V) TIME FROM OUTPUT SHORT (MINUTES) 1008 G07 1008 G08
0.1Hz to 10Hz Noise Noise Spectrum Total Noise vs Source Resistance
1000 10 T T T A = 25°C A = 25°C A = 25°C V V V S = ±2V TO ±20V S = ±2V TO ±20V S = ±2V TO ±20V √Hz) √Hz) √Hz) AT 10Hz μV/ AT 1Hz 100 1 R – CURRENT NOISE R + RS = 2R VOLTAGE NOISE 10 0.1 1/f CORNER 2.5Hz NOISE VOLTAGE (400nV/DIV) AT 1Hz 1/f CORNER TOTAL NOISE DENSITY ( VOLTAGE NOISE DENSITY (nV/ CURRENT NOISE DENSITY (fA/ 120Hz AT 10Hz RESISTOR NOISE ONLY 1 0.01 0 2 4 6 8 10 1 10 100 1000 102 103 104 105 106 107 108 TIME (SECONDS) FREQUENCY (Hz) SOURCE RESISTANCE (Ω) 1008 G10 1008 G09 1008 G11
Gain, Phase Shift vs Frequency Gain, Phase Shift vs Frequency with Standard (Feedback) Voltage Gain vs Frequency with Alternate Compensation Compensation
140 40 100 40 100 GAIN φ C 120 S = 10pF GAIN CF = 30pF C C F = 3pF 30 120 30 F = 3pF 120 100 φ PHASE SHIFT (DEG) φ PHASE SHIFT (DEG) C C S = 10pF φ CS = 100pF F = 3pF 80 20 CS = 10pF 140 20 GAIN 140 CS = 100pF GAIN CF = 30pF 60 C C S = 100pF F = 30pF GAIN (dB) 10 160 GAIN (dB) 10 160 40 VOLTAGE GAIN (dB) 20 PHASE MARGIN PHASE MARGIN 0 180 0 180 WITH CS = 100pF = 56° WITH CF = 30pF = 60° 0 TA = 25°C TA = 25°C VS = ±15V VS = ±15V –20 –10 200 –10 200 0.01 0.1 1 10 100 1k 10k 100k 1M 10M 0.01 0.1 1 10 0.01 0.1 1 10 FREQUENCY (Hz) FREQUENCY (MHz) FREQUENCY (MHz) 1008 G12 1008 G13 1008 G14 1008fb 6