Datasheet LTC1250 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Very Low Noise Zero-Drift Bridge Amplifier |
| Pages / Page | 12 / 4 — TYPICAL PERFOR A CE CH. ARA TERISTICS. Sampling Frequency vs. Input Noise … |
| File Format / Size | PDF / 184 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CH. ARA TERISTICS. Sampling Frequency vs. Input Noise vs Temperature. Supply Current vs Temperature
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LTC1250
W U TYPICAL PERFOR A CE CH C ARA TERISTICS Sampling Frequency vs Input Noise vs Temperature Supply Current vs Temperature Temperature
1.2 4.5 8 V V V S = ±5V S = ±5V S = ±5V 7 1.0 4.0 6 ) P-P 0.8 V 5 µ 3.5 0.1Hz TO 10Hz 0.6 4 3.0 3 0.4 INPUT NOISE ( SUPPLY CURRENT (mA) 2 0.1Hz TO 1Hz 2.5 SAMPLING FREQUENCY (kHz) 0.2 1 0 2.0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 150 TEMPERATURE ( TEMPERATURE ( °C) °C) TEMPERATURE (°C) 1250 G06 1250 G04 1250 G05
Bias Current (Magnitude) vs Voltage Noise vs Frequency Gain/Phase vs Frequency Temperature
80 100 100 1000 V V S = ±5V S = ±5V 70 RS = 10Ω 80 80 60 PHASE MARGIN (DEG) Hz) | √ 60 60 pA | 50 GAIN PHASE: RL = 100k 40 40 40 100 GAIN (dB) 30 20 PHASE: 20 RL = 1k BIAS CURRENT ( V 20 S = ±5V OR VOLTAGE NOISE (nV/ SINGLE 5V 0 0 T 10 A = 25°C CL = 100pF 0 –20 –20 10 1 10 100 1k 10k 1k 10k 100k 1M 10M –50 –25 0 25 50 75 100 125 FREQUENCY (Hz) FREQUENCY (Hz) TEMPERATURE (°C) 1250 G07 1250 G08 1250 G09
Common Mode Input Range Common Mode Rejection Ratio vs Overload Recovery vs Supply Voltage Frequency
8 140 T VS = ±5V A = 25°C 0.2 6 120 VCM = 1VRMS 4 INPUT (V) 0 100 2 0 80 0 60 CMRR (dB) OUTPUT (V) –2 –5 40 –4 500µs/DIV INPUT COMMON MODE RANGE (V) 20 –6 AV = 100, RL = 100k, CL = 50pF, VS = ±5V –8 0 2 3 4 5 6 7 8 1 10 100 1k 10k 100k SUPPLY VOLTAGE (±V) FREQUENCY (Hz) 1250 G12 1250 G11 1250fb 4
W U TYPICAL PERFOR A CE CH C ARA TERISTICS Sampling Frequency vs Input Noise vs Temperature Supply Current vs Temperature Temperature
1.2 4.5 8 V V V S = ±5V S = ±5V S = ±5V 7 1.0 4.0 6 ) P-P 0.8 V 5 µ 3.5 0.1Hz TO 10Hz 0.6 4 3.0 3 0.4 INPUT NOISE ( SUPPLY CURRENT (mA) 2 0.1Hz TO 1Hz 2.5 SAMPLING FREQUENCY (kHz) 0.2 1 0 2.0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 150 TEMPERATURE ( TEMPERATURE ( °C) °C) TEMPERATURE (°C) 1250 G06 1250 G04 1250 G05
Bias Current (Magnitude) vs Voltage Noise vs Frequency Gain/Phase vs Frequency Temperature
80 100 100 1000 V V S = ±5V S = ±5V 70 RS = 10Ω 80 80 60 PHASE MARGIN (DEG) Hz) | √ 60 60 pA | 50 GAIN PHASE: RL = 100k 40 40 40 100 GAIN (dB) 30 20 PHASE: 20 RL = 1k BIAS CURRENT ( V 20 S = ±5V OR VOLTAGE NOISE (nV/ SINGLE 5V 0 0 T 10 A = 25°C CL = 100pF 0 –20 –20 10 1 10 100 1k 10k 1k 10k 100k 1M 10M –50 –25 0 25 50 75 100 125 FREQUENCY (Hz) FREQUENCY (Hz) TEMPERATURE (°C) 1250 G07 1250 G08 1250 G09
Common Mode Input Range Common Mode Rejection Ratio vs Overload Recovery vs Supply Voltage Frequency
8 140 T VS = ±5V A = 25°C 0.2 6 120 VCM = 1VRMS 4 INPUT (V) 0 100 2 0 80 0 60 CMRR (dB) OUTPUT (V) –2 –5 40 –4 500µs/DIV INPUT COMMON MODE RANGE (V) 20 –6 AV = 100, RL = 100k, CL = 50pF, VS = ±5V –8 0 2 3 4 5 6 7 8 1 10 100 1k 10k 100k SUPPLY VOLTAGE (±V) FREQUENCY (Hz) 1250 G12 1250 G11 1250fb 4
