Overview
The LMC662AIMX is a CMOS dual operational amplifier produced by National Semiconductor, now part of Texas Instruments. This device is designed for operation from a single supply and is built using National’s advanced Double-Poly Silicon-Gate CMOS process. It operates from a supply voltage range of 4.75V to 15.5V and features rail-to-rail output swing, making it versatile for various applications. The LMC662AIMX is known for its high voltage gain, low input offset voltage, and ultra-low input bias current, making it suitable for precision and low-noise applications.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | TA = –40°C to +85°C | ±1 | ±3 | ±3.3 | mV |
| Input Offset Voltage Drift (dVOS/dT) | TA = –40°C to +85°C | ±1.3 | µV/°C | ||
| Power-Supply Rejection Ratio (PSRR) | 5V ≤ VS ≤ 15V | 72 | 85 | dB | |
| Open-Loop Voltage Gain (AOL) | VS = 15V, RL = 2kΩ | 400 | 2000 | V/mV | |
| Slew Rate (SR) | VS = 15V, 10V step | 0.6 | 1.1 | V/µs | |
| Gain Bandwidth Product (GBW) | 1.4 | MHz | |||
| Input Common-Mode Range | Includes V− | ||||
| Supply Current (ISS) | 400 µA/amplifier | µA | |||
| Operating Temperature Range | –40°C to +85°C | °C |
Key Features
- Rail-to-rail output swing
- Specified for 2kΩ and 600Ω loads
- High voltage gain: 126 dB
- Low input offset voltage: 3 mV
- Low offset voltage drift: 1.3 µV/°C
- Ultra-low input bias current: 2 fA
- Low voltage noise: 22 nV/√Hz
- Input common-mode range includes V−
- Operating range from 4.75V to 15.5V supply
- Supply current (ISS) = 400 µA/amplifier, independent of V+
- Slew rate: 1.1 V/µs
Applications
- High-impedance buffer or preamplifier
- Precision current-to-voltage converter
- Long-term integrator
- Sample-and-hold circuit
- Peak detector
- Medical instrumentation
- Industrial controls
- Automotive sensors
Q & A
- What is the operating voltage range of the LMC662AIMX?
The LMC662AIMX operates from a supply voltage range of 4.75V to 15.5V.
- What is the input offset voltage of the LMC662AIMX?
The input offset voltage is typically ±3 mV.
- What is the slew rate of the LMC662AIMX?
The slew rate is 1.1 V/µs.
- What are the typical applications of the LMC662AIMX?
Typical applications include high-impedance buffers, precision current-to-voltage converters, long-term integrators, sample-and-hold circuits, peak detectors, medical instrumentation, industrial controls, and automotive sensors.
- What is the gain bandwidth product of the LMC662AIMX?
The gain bandwidth product is 1.4 MHz.
- What is the input bias current of the LMC662AIMX?
The input bias current is ultra-low at 2 fA.
- Does the LMC662AIMX have rail-to-rail output swing?
Yes, the LMC662AIMX features rail-to-rail output swing.
- What is the phase margin of the LMC662AIMX?
The phase margin is 50 degrees.
- What is the power-supply rejection ratio (PSRR) of the LMC662AIMX?
The PSRR is typically 85 dB).
- What is the operating temperature range of the LMC662AIMX?
The operating temperature range is –40°C to +85°C.
