Overview
The LMC6484IMX/NOPB is a quad operational amplifier produced by Texas Instruments. It is part of the LMC648x series, which includes the LMC6482 and LMC6484 models. These devices are known for their ultra-low bias current, precision CMOS rail-to-rail input and output capabilities, making them ideal for systems requiring a large input signal range and high accuracy.
The LMC6484 is particularly suited for applications such as data acquisition and battery-operated systems due to its low-voltage characteristics and low power dissipation. It is available in various packages, including SOIC (D) and PDIP (N), each with 14 pins.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | -40 | 85 | °C | |
| Supply Voltage (VS) | 16 | V | ||
| Input Offset Voltage (VOS) | ±0.11 | ±0.75 | ±3.7 | mV |
| Input Bias Current (IB) | ±0.02 | ±4 | pA | |
| Common-Mode Rejection Ratio (CMRR) | 70 | 82 | 67 | dB |
| Power-Supply Rejection Ratio (PSRR) | 65 | 82 | 62 | dB |
| Output Voltage Swing (VO) | 4.7 | 4.9 | V (at V+ = 5V, RL = 2kΩ) | |
| Junction-to-Ambient Thermal Resistance (RθJA) | 83.0 | °C/W (SOIC package) |
Key Features
- Rail-to-rail input common-mode voltage range and rail-to-rail output swing, ensuring maximum dynamic signal range in low voltage and single supply systems.
- Ultra-low input bias current of 20 fA, making it suitable for high-impedance sources.
- Excellent common-mode rejection ratio (CMRR) and power-supply rejection ratio (PSRR) of up to 82 dB.
- Specified performance at 3V, 5V, and 15V supply voltages.
- Low power dissipation, making it an excellent choice for battery-operated systems.
- Available in PDIP, SOIC, and VSSOP packages.
Applications
- Data acquisition systems: The LMC6484 is ideal for systems that require a large input signal range and high accuracy.
- Battery-operated systems: Its low-voltage characteristics and low power dissipation make it suitable for battery-powered devices.
- Upgrade for limited common-mode range amplifiers: It can replace amplifiers like the TLC272, TLC274, TLC277, and TLC279.
- General-purpose amplification: Suitable for various applications requiring high precision and low power consumption.
Q & A
- What is the operating temperature range of the LMC6484IMX/NOPB?
The operating temperature range is -40°C to 85°C.
- What is the typical input bias current of the LMC6484IMX/NOPB?
The typical input bias current is 20 fA.
- What are the package options available for the LMC6484IMX/NOPB?
The device is available in PDIP, SOIC, and VSSOP packages.
- What is the common-mode rejection ratio (CMRR) of the LMC6484IMX/NOPB?
The CMRR is up to 82 dB.
- Is the LMC6484IMX/NOPB suitable for battery-operated systems?
Yes, it is suitable due to its low power dissipation and low-voltage characteristics.
- What are some common applications of the LMC6484IMX/NOPB?
Common applications include data acquisition systems, battery-operated systems, and general-purpose amplification.
- What is the maximum supply voltage for the LMC6484IMX/NOPB?
The maximum supply voltage (VS) is 16 V.
- How many amplifiers are included in the LMC6484IMX/NOPB?
The LMC6484IMX/NOPB includes four operational amplifiers.
- What is the typical output voltage swing for the LMC6484IMX/NOPB at V+ = 5V and RL = 2kΩ?
The typical output voltage swing is 4.9 V.
- What is the junction-to-ambient thermal resistance for the SOIC package of the LMC6484IMX/NOPB?
The junction-to-ambient thermal resistance (RθJA) for the SOIC package is 83.0 °C/W.
