Overview
The LM124AJ/PB, produced by Texas Instruments, is a quad operational amplifier designed for high gain and low power consumption. This device is part of the LM124 series, which features four independent, internally frequency-compensated operational amplifiers. The LM124AJ/PB is particularly versatile, operating from a single power supply over a wide range of voltages (3V to 32V) or from dual supplies (±1.5V to ±16V). This makes it suitable for various applications, including transducer amplifiers, DC gain blocks, and conventional op-amp circuits in single power supply systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max |
|---|---|---|---|---|
| Input Offset Voltage | TA = 25°C | 1 mV | 2 mV | 3 mV |
| Input Bias Current | VCM = 0V, TA = 25°C | 20 nA | 45 nA | 100 nA |
| Input Offset Current | VCM = 0V, TA = 25°C | 2 nA | 5 nA | 30 nA |
| Input Common-Mode Voltage Range | V+ = 30V, TA = 25°C | 0 V | - | V+ - 1.5V |
| Supply Current | V+ = 30V, TA = 25°C | 1.5 mA | 3 mA | - |
| Large Signal Voltage Gain | V+ = 15V, RL ≥ 2 kΩ, TA = 25°C | 50 V/mV | 100 V/mV | - |
| Common-Mode Rejection Ratio | VCM = 0V to V+ - 1.5V, TA = 25°C | 70 dB | 85 dB | - |
| Operating Temperature Range | - | -55°C | - | 125°C |
Key Features
- Internally frequency compensated for unity gain.
- Low input biasing current (45 nA) and input offset current (5 nA), both temperature compensated.
- Large DC voltage gain (100 dB) and wide bandwidth (1 MHz at unity gain).
- Wide power supply range: single supply (3V to 32V) or dual supplies (±1.5V to ±16V).
- Low supply current drain (700 μA), essentially independent of supply voltage.
- Large output voltage swing (0V to V+ - 1.5V).
- Input common-mode voltage range includes ground, and output voltage can swing to ground.
- Compatible with all forms of logic and suitable for battery operation.
Applications
- Transducer amplifiers.
- DC gain blocks.
- Conventional op-amp circuits in single power supply systems.
- Interface electronics in digital systems using standard +5V power supply voltage.
- Battery-operated devices due to low power consumption.
Q & A
- What is the operating temperature range of the LM124AJ/PB?
The operating temperature range is -55°C to 125°C.
- What is the input offset voltage of the LM124AJ/PB?
The input offset voltage is typically 2 mV, with a maximum of 3 mV at 25°C.
- Can the LM124AJ/PB operate from a single power supply?
- What is the typical supply current of the LM124AJ/PB?
The typical supply current is 700 μA, which is essentially independent of the supply voltage).
- What is the common-mode rejection ratio of the LM124AJ/PB?
The common-mode rejection ratio is typically 85 dB).
- Is the LM124AJ/PB suitable for battery-operated devices?
- What is the bandwidth of the LM124AJ/PB at unity gain?
The bandwidth at unity gain is 1 MHz).
- Can the LM124AJ/PB handle high input common-mode voltages?
- Is the LM124AJ/PB compatible with digital logic systems?
- What is the maximum output voltage swing of the LM124AJ/PB?
The output voltage can swing from 0V to V+ - 1.5V).
