Overview
The LMC6484AIMX/NOPB is a quad operational amplifier (Op Amp) manufactured by Texas Instruments. This device is part of the LMC648x series, known for its ultra-low bias current, precision CMOS rail-to-rail input and output capabilities. The LMC6484AIMX/NOPB is particularly suited for systems requiring a large input signal range, such as data acquisition systems, and is an excellent upgrade for circuits using limited common-mode range amplifiers like the TLC272, TLC274, TLC277, and TLC279.
The device features a wide supply voltage range, low power dissipation, and excellent temperature stability, making it ideal for battery-operated systems, portable equipment, automotive, and industrial applications.
Key Specifications
| Parameter | Conditions | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | TJ = 25°C, V+ = 5V, V− = 0V | ±0.11 | ±0.75 | ±3.7 | mV |
| Input Bias Current (IB) | TJ = 25°C, V+ = 5V, V− = 0V | ±0.02 | ±4.0 | pA | |
| Input Offset Current (IOS) | TJ = 25°C, V+ = 5V, V− = 0V | ±0.01 | ±2.0 | pA | |
| Common Mode Rejection Ratio (CMRR) | 3V ≤ V+ ≤ 15V, V− = 0V | 82 | 60 | dB | |
| Power Supply Rejection Ratio (PSRR) | 3V ≤ V+ ≤ 15V, V− = 0V | 82 | 60 | dB | |
| Supply Voltage Range | 2.7V to 36V | V | |||
| Supply Current per Amplifier | V+ = 5V, VO = V+/2 | 0.65 | 0.5 | 0.95 | mA |
| Output Swing (RL = 2kΩ) | V+ = 5V, RL = 2kΩ | V+/2 - 0.2V | V | ||
| Output Swing (RL = 600Ω) | V+ = 5V, RL = 600Ω | V+/2 - 0.37V | V | ||
| Operating Temperature Range | -40°C to 85°C | °C | |||
| Package Type | SOIC (D) 14-pin |
Key Features
- Rail-to-rail input common-mode voltage range (guaranteed over temperature)
- Rail-to-rail output swing (within 20mV of supply rail, 100kΩ load)
- Specified performance at 3V, 5V, and 15V
- Excellent Common Mode Rejection Ratio (CMRR) and Power Supply Rejection Ratio (PSRR): 82dB
- Ultra-low input current: 20fA
- Specified for 2kΩ and 600Ω loads
- Improved replacement for TLC272, TLC277, TLC274, and TLC279
- Low power dissipation, making it suitable for battery-operated systems
- High voltage gain and slew rate: 130 dB and 1.2 V/μs respectively
- Adjustable common-mode input range 0V to VDD-2V
- Up to 5MHz gain-bandwidth product
Applications
- Data Acquisition Systems
- Transducer Amplifiers
- Hand-held Analytic Instruments
- Medical Instrumentation
- Active Filter, Peak Detector, Sample and Hold, pH Meter, Current Source
- Battery-operated systems
- Portable equipment and automotive applications
- Industrial applications requiring low power and high accuracy
Q & A
- What is the input common-mode voltage range of the LMC6484AIMX/NOPB?
The input common-mode voltage range extends to both supply rails, guaranteed over temperature.
- What is the output swing capability of the LMC6484AIMX/NOPB?
The output swing is rail-to-rail, within 20mV of the supply rail for a 100kΩ load, and guaranteed for loads down to 600Ω.
- What are the specified supply voltages for the LMC6484AIMX/NOPB?
The device is specified for 3V, 5V, and 15V performance.
- What is the input bias current of the LMC6484AIMX/NOPB?
The input bias current is ultra-low at 20fA.
- What are the typical applications of the LMC6484AIMX/NOPB?
Typical applications include data acquisition systems, transducer amplifiers, hand-held analytic instruments, medical instrumentation, and battery-operated systems.
- What is the operating temperature range of the LMC6484AIMX/NOPB?
The operating temperature range is -40°C to 85°C.
- What package types are available for the LMC6484AIMX/NOPB?
The device is available in PDIP, SOIC, and VSSOP packages.
- What is the supply current per amplifier for the LMC6484AIMX/NOPB?
The supply current per amplifier is approximately 0.65mA at V+ = 5V.
- How does the LMC6484AIMX/NOPB compare to other operational amplifiers like the TLC272 and TLC277?
The LMC6484AIMX/NOPB is an improved replacement for these amplifiers, offering better common-mode range and accuracy).
- What is the gain-bandwidth product of the LMC6484AIMX/NOPB?
The gain-bandwidth product is up to 5MHz).
- Is the LMC6484AIMX/NOPB suitable for high-temperature environments?
The device has a junction temperature range of -40°C to 85°C, making it suitable for a variety of environmental conditions).
