LF357
LF357 is JFET Input Operational Amplifiers manufactured by Texas Instruments.
- Part of the LF355 comparator family.
- Part of the LF355 comparator family.
Features
- 1 Advantages
- Replace Expensive Hybrid and Module FET Op Amps
- Rugged JFETs Allow Blow-Out Free Handling pared With MOSFET Input Devices
- Excellent for Low Noise Applications Using Either High or Low Source Impedance- Very Low 1/f Corner
- Offset Adjust Does Not Degrade Drift or mon-Mode Rejection as in Most Monolithic Amplifiers
- New Output Stage Allows Use of Large Capacitive Loads (5,000 p F) Without Stability Problems
- Internal pensation and Large Differential Input Voltage Capability
- mon Features
- Low Input Bias Current: 30 p A
- Low Input Offset Current: 3 p A
- High Input Impedance: 1012 Ω
- Low Input Noise Current: 0.01 p A/√Hz
- High mon-Mode Rejection Ratio: 100 d B
- Large DC Voltage Gain: 106 d B
- Unmon Features
- Extremely Fast Settling Time to 0.01%:
- 4 μs for the LFx55 devices
- 1.5 μs for the LFx56
- 1.5 μs for the LFx57 (AV = 5)
- Fast Slew Rate:
- 5 V/µs for the LFx55
- 12 V/µs for the LFx56
- 50 V/µs for the LFx57 (AV = 5)
- Wide Gain Bandwidth:
- 2.5 MHz for the LFx55 devices
- 5 MHz for the LFx56
- 20 MHz for the LFx57 (AV = 5)
- Low Input Noise Voltage:
- 20 n V/√Hz for the LFx55
- 12 n V/√Hz for the LFx56
- 12 n V/√Hz for the LFx57 (AV = 5)
2 Applications
- Precision High-Speed Integrators
- Fast D/A and A/D Converters
- High Impedance Buffers
- Wideband, Low Noise, Low Drift Amplifiers
- Logarithmic Amplifiers
- Photocell Amplifiers
- Sample and Hold...