Datasheet LT1007, LT1037 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Low Noise, High Speed Precision Operational Amplifiers |
| Páginas / Página | 16 / 1 — FEATURES. DESCRIPTIO. APPLICATIO S. TYPICAL APPLICATIO. Ultrapure 1kHz … |
| Formato / tamaño de archivo | PDF / 532 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTIO. APPLICATIO S. TYPICAL APPLICATIO. Ultrapure 1kHz Sine Wave Generator. 0.1Hz to 10Hz Noise
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LT1007/LT1037 Low Noise, High Speed Precision Operational Amplifiers
U FEATURES DESCRIPTIO
■ Guaranteed 4.5nV/√Hz 10Hz Noise The LT®1007/LT1037 series features the lowest noise ■ Guaranteed 3.8nV/√Hz 1kHz Noise performance available to date for monolithic operational ■ 0.1Hz to 10Hz Noise, 60nVP-P Typical amplifiers: 2.5nV/√Hz wideband noise (less than the noise of ■ Guaranteed 7 Million Min Voltage Gain, RL = 2k a 400Ω resistor), 1/f corner frequency of 2Hz and 60nV peak- ■ Guaranteed 3 Million Min Voltage Gain, RL = 600Ω to-peak 0.1Hz to 10Hz noise. Low noise is combined with ■ Guaranteed 25µV Max Offset Voltage outstanding precision and speed specifications: 10µV offset ■ Guaranteed 0.6µV/°C Max Drift with Temperature voltage, 0.2µV/°C drift, 130dB common mode and power ■ Guaranteed 11V/µs Min Slew Rate (LT1037) supply rejection, and 60MHz gain bandwidth product on the ■ Guaranteed 117dB Min CMRR decompensated LT1037, which is stable for closed-loop
U
gains of 5 or greater.
APPLICATIO S
The voltage gain of the LT1007/LT1037 is an extremely high 20 million driving a 2kΩ load and 12 million driving a 600Ω ■ Low Noise Signal Processing load to ±10V. ■ Microvolt Accuracy Threshold Detection ■ In the design, processing and testing of the device, particular Strain Gauge Amplifiers ■ attention has been paid to the optimization of the entire Direct Coupled Audio Gain Stages ■ distribution of several key parameters. Consequently, the Sine Wave Generators ■ specifications of even the lowest cost grades (the LT1007C Tape Head Preamplifiers ■ and the LT1037C) have been spectacularly improved com- Microphone Preamplifiers pared to equivalent grades of competing amplifiers. The sine wave generator application shown below utilizes the , LTC and LT are registered trademarks of Linear Technology Corporation. low noise and low distortion characteristics of the LT1037.
U TYPICAL APPLICATIO Ultrapure 1kHz Sine Wave Generator 0.1Hz to 10Hz Noise
430Ω 2 – 6 LT1037 OUTPUT 3 + 1 f = C 2πRC #327 LAMP R R = 1591.5Ω ±0.1% C = 0.1µF ±0.1% C R TOTAL HARMONIC DISTORTION = < 0.0025% VOLTAGE NOISE (20nV/DIV) NOISE = < 0.0001% AMPLITUDE = ±8V OUTPUT FREQUENCY = 1.000kHz FOR VALUES GIVEN ±0.4% 1007/37 TA01 0 2 4 6 8 10 TIME (SEC) 1007/37 TA02 sn100737 100737fbs 1
U FEATURES DESCRIPTIO
■ Guaranteed 4.5nV/√Hz 10Hz Noise The LT®1007/LT1037 series features the lowest noise ■ Guaranteed 3.8nV/√Hz 1kHz Noise performance available to date for monolithic operational ■ 0.1Hz to 10Hz Noise, 60nVP-P Typical amplifiers: 2.5nV/√Hz wideband noise (less than the noise of ■ Guaranteed 7 Million Min Voltage Gain, RL = 2k a 400Ω resistor), 1/f corner frequency of 2Hz and 60nV peak- ■ Guaranteed 3 Million Min Voltage Gain, RL = 600Ω to-peak 0.1Hz to 10Hz noise. Low noise is combined with ■ Guaranteed 25µV Max Offset Voltage outstanding precision and speed specifications: 10µV offset ■ Guaranteed 0.6µV/°C Max Drift with Temperature voltage, 0.2µV/°C drift, 130dB common mode and power ■ Guaranteed 11V/µs Min Slew Rate (LT1037) supply rejection, and 60MHz gain bandwidth product on the ■ Guaranteed 117dB Min CMRR decompensated LT1037, which is stable for closed-loop
U
gains of 5 or greater.
APPLICATIO S
The voltage gain of the LT1007/LT1037 is an extremely high 20 million driving a 2kΩ load and 12 million driving a 600Ω ■ Low Noise Signal Processing load to ±10V. ■ Microvolt Accuracy Threshold Detection ■ In the design, processing and testing of the device, particular Strain Gauge Amplifiers ■ attention has been paid to the optimization of the entire Direct Coupled Audio Gain Stages ■ distribution of several key parameters. Consequently, the Sine Wave Generators ■ specifications of even the lowest cost grades (the LT1007C Tape Head Preamplifiers ■ and the LT1037C) have been spectacularly improved com- Microphone Preamplifiers pared to equivalent grades of competing amplifiers. The sine wave generator application shown below utilizes the , LTC and LT are registered trademarks of Linear Technology Corporation. low noise and low distortion characteristics of the LT1037.
U TYPICAL APPLICATIO Ultrapure 1kHz Sine Wave Generator 0.1Hz to 10Hz Noise
430Ω 2 – 6 LT1037 OUTPUT 3 + 1 f = C 2πRC #327 LAMP R R = 1591.5Ω ±0.1% C = 0.1µF ±0.1% C R TOTAL HARMONIC DISTORTION = < 0.0025% VOLTAGE NOISE (20nV/DIV) NOISE = < 0.0001% AMPLITUDE = ±8V OUTPUT FREQUENCY = 1.000kHz FOR VALUES GIVEN ±0.4% 1007/37 TA01 0 2 4 6 8 10 TIME (SEC) 1007/37 TA02 sn100737 100737fbs 1