LM201AD

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LM201AD General-Purpose Operational Amplifier

Overview

The LM201AD is a high-performance, general-purpose operational amplifier designed for a wide range of analog applications. It combines excellent DC and AC characteristics with robust performance across varying operating conditions. The device is optimized for low power consumption, high slew rate, and wide bandwidth, making it suitable for signal conditioning, active filtering, and precision amplification tasks.

This op-amp is part of the LM201 series, which represents an improvement over earlier designs with enhanced stability and reduced sensitivity to external noise. The LM201AD is available in multiple package options, including SOIC and PDIP, providing flexibility for different PCB layouts and assembly processes.

Key Features

• Wide supply voltage range: ±5V to ±18V
• High slew rate: 10V/µs (typical)
• Low input bias current: 30nA (maximum)
• Low input offset voltage: 2mV (maximum)
• Unity gain bandwidth: 1MHz (typical)
• Output short-circuit protection
• Internal frequency compensation
• Low power consumption: 1.5mA (typical) quiescent current
• Wide operating temperature range: -55°C to +125°C
• Available in 8-pin SOIC and PDIP packages

Applications

The LM201AD is versatile enough for use in numerous analog circuit applications, including:

• Precision instrumentation amplifiers
• Active filters (low-pass, high-pass, band-pass)
• Signal conditioning circuits
• Analog-to-digital converter interfaces
• Voltage followers and buffers
• Summing and differential amplifiers
• Oscillators and waveform generators
• Current-to-voltage converters
• Sensor signal amplification

Electrical Characteristics

The following table summarizes the key electrical specifications (TA = 25°C, VS = ±15V unless otherwise noted):

• Input Offset Voltage: 0.8mV (typical), 2mV (maximum)
• Input Bias Current: 15nA (typical), 30nA (maximum)
• Input Offset Current: 3nA (typical), 10nA (maximum)
• Common Mode Rejection Ratio (CMRR): 90dB (typical), 80dB (minimum)
• Power Supply Rejection Ratio (PSRR): 96dB (typical), 80dB (minimum)
• Large Signal Voltage Gain: 200V/mV (typical) at RL = 2kΩ
• Slew Rate: 10V/µs (typical)
• Gain Bandwidth Product: 1MHz (typical)
• Supply Current: 1.5mA (typical) per amplifier
• Output Voltage Swing: ±12V (typical) at RL = 2kΩ
• Output Short-Circuit Current: 25mA (typical)

Package Information

The LM201AD is available in the following package options:

• 8-pin SOIC (D):
  • Package Dimensions: 4.90mm x 3.91mm x 1.58mm
  • Lead Pitch: 1.27mm
  • Moisture Sensitivity Level (MSL): 1
  • Recommended PCB Land Pattern: IPC-7351 compliant
• 8-pin PDIP (P):
  • Package Dimensions: 9.81mm x 6.35mm x 3.3mm
  • Lead Pitch: 2.54mm
  • Package Weight: 0.65g (typical)
  • Through-hole mounting

Thermal Characteristics

• Junction-to-Ambient Thermal Resistance (θJA):
  • SOIC package: 160°C/W
  • PDIP package: 100°C/W
• Junction-to-Case Thermal Resistance (θJC):
  • SOIC package: 60°C/W
  • PDIP package: 45°C/W
• Maximum Junction Temperature (TJ): 150°C
• Storage Temperature Range: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage Range: ±5V to ±18V
• Common Mode Input Voltage Range: ±12V (at VS = ±15V)
• Differential Input Voltage: ±30V
• Output Current: ±10mA (continuous)
• Operating Temperature Range: -55°C to +125°C

Typical Performance Characteristics

The LM201AD exhibits the following typical performance characteristics (based on manufacturer data):

• Input offset voltage shows minimal drift over temperature (1.5µV/°C typical)
• Stable operation with capacitive loads up to 100pF without additional compensation
• Fast settling time (2µs to 0.1% for 10V step)
• Low noise performance (35nV/√Hz at 1kHz)
• Excellent phase margin (60° typical) for stable operation in unity gain configurations

Design Considerations

When designing with the LM201AD, consider the following:

• For optimal performance, use bypass capacitors (0.1µF ceramic) close to the power supply pins
• Maintain proper PCB layout practices to minimize parasitic capacitance and noise pickup
• For high-impedance applications, consider guarding techniques to reduce leakage currents
• The device is internally compensated for unity gain stability but may require additional compensation for specific applications
• Avoid operating near the maximum ratings for extended periods to ensure long-term reliability

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