Overview
The LMC662CN/NOPB is a CMOS dual operational amplifier produced by Texas Instruments. This device is designed for operation from a single supply and is built using TI's advanced CMOS process. It operates within a supply voltage range of 4.75V to 15.5V and features rail-to-rail output swing, making it versatile for various applications. The LMC662 is ideal for high-impedance buffering, precision current-to-voltage conversion, long-term integration, sample-and-hold circuits, and peak detection among other uses.
Key Specifications
| Parameter | Test Conditions | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage | TJ = 25°C, V+ = 5V, V− = 0V, VCM = 1.5V, VO = 2.5V | 3 | 1 | 6 | mV |
| Input Offset Voltage Drift | TJ = –40°C to +85°C | 1.3 | - | - | μV/°C |
| Input Bias Current | TJ = 25°C, V+ = 5V, V− = 0V, VCM = 1.5V, VO = 2.5V | 2 | - | 4 | fA |
| Input Resistance | - | - | - | >1 TΩ | - |
| Common Mode Rejection Ratio (CMRR) | V+ = 15V, 0V < VCM < 12V | 83 | 68 | 85 | dB |
| Supply Voltage Range | - | - | 4.75 | 15.5 | V |
| Operating Temperature Range | - | - | -40 | 85 | °C |
| Slew Rate | - | 1.1 | - | - | V/μs |
| Output Voltage Swing | VS = 5V, RL = 2kΩ | - | 0.10 | 4.87 | V |
Key Features
- Rail-to-rail output swing
- Specified for 2kΩ and 600Ω loads
- High voltage gain: 126dB
- Low input offset voltage: 3mV
- Low offset voltage drift: 1.3μV/°C
- Ultra-low input bias current: 2fA
- Low voltage noise: 22nV/√Hz
- Input common-mode range includes V−
- Operating range from 4.75V to 15.5V supply
- Slew rate: 1.1V/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 supply voltage range of the LMC662?
The LMC662 operates within a supply voltage range of 4.75V to 15.5V.
- What is the input offset voltage of the LMC662?
The input offset voltage is typically 3mV, with a maximum of 6mV at 25°C.
- What is the slew rate of the LMC662?
The slew rate of the LMC662 is 1.1V/μs).
- What are the typical applications of the LMC662?
The LMC662 is typically used in 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 common-mode rejection ratio (CMRR) of the LMC662?
The CMRR is typically 83dB, with a minimum of 68dB at V+ = 15V and 0V < VCM < 12V).
- What is the input bias current of the LMC662?
The input bias current is typically 2fA, with a maximum of 4fA at 25°C).
- What is the operating temperature range of the LMC662?
The operating temperature range is –40°C to +85°C for the LMC662AI and 0°C to +70°C for the LMC662C).
- What is the output voltage swing of the LMC662?
The output voltage swing is from 0.10V to 4.87V for a 5V supply and 2kΩ load).
- Is the LMC662 suitable for single-supply operation?
- What is the input resistance of the LMC662?
The input resistance is greater than 1 TΩ).
