Overview
The LM124AJB is a quad operational amplifier produced by Texas Instruments. It is part of the LM124 series, which consists of four independent, high-gain, internally frequency-compensated operational amplifiers. These amplifiers are designed to operate from a single power supply over a wide range of voltages, as well as from split-power supplies. The LM124AJB is packaged in a 14-pin CDIP (J) package and operates within a temperature range of -55°C to 125°C, making it suitable for a variety of applications requiring robust and reliable performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | -55 to 125 | °C |
| Supply Voltage Range (Single Supply) | 3 to 32 | V |
| Supply Voltage Range (Dual Supplies) | ±1.5 to ±16 | V |
| Bandwidth (Unity Gain) | 1.2 MHz | |
| DC Voltage Gain | 100 dB | |
| Input Bias Current | 45 nA | |
| Input Offset Voltage | 2 mV | |
| Input Offset Current | 5 nA | |
| Supply Current Drain | 700 µA | |
| Package Type | CDIP (J) | |
| Number of Pins | 14 |
Key Features
- Internally frequency compensated for unity gain.
- Large DC voltage gain of 100 dB.
- Wide bandwidth (unity gain) of 1.2 MHz.
- Wide power supply range: single supply from 3 V to 32 V, or dual supplies from ±1.5 V to ±16 V.
- Very low supply current drain of 700 µA, essentially independent of supply voltage.
- Low input biasing current of 45 nA and low input offset voltage of 2 mV.
- Input common-mode voltage range includes ground, and differential input voltage range equal to the power supply voltage.
- Large output voltage swing from 0 V to V+ - 1.5 V.
- Compatible with all forms of logic and suitable for battery operation.
- Unity gain cross frequency is temperature compensated, and input bias current is also temperature compensated.
Applications
- Transducer amplifiers.
- DC gain blocks.
- Conventional op-amp circuits, especially in single power supply systems.
- Interface electronics in digital systems, such as those using standard 5-V power supply voltage.
- Merchant network and server power supply units.
- Multi-function printers.
- Power supplies and mobile chargers.
- Desktop PC and motherboard.
- Indoor and outdoor air conditioners.
- Washers, dryers, and refrigerators.
- AC inverters, string inverters, central inverters, and voltage frequency drives.
- Uninterruptible power supplies.
Q & A
- What is the operating temperature range of the LM124AJB?
The LM124AJB operates within a temperature range of -55°C to 125°C.
- What are the supply voltage ranges for the LM124AJB?
The LM124AJB can operate from a single supply voltage of 3 V to 32 V, or from dual supplies of ±1.5 V to ±16 V.
- What is the bandwidth of the LM124AJB at unity gain?
The bandwidth at unity gain is 1.2 MHz.
- What is the DC voltage gain of the LM124AJB?
The DC voltage gain is 100 dB.
- What is the input bias current of the LM124AJB?
The input bias current is 45 nA.
- What is the input offset voltage of the LM124AJB?
The input offset voltage is 2 mV.
- What is the supply current drain of the LM124AJB?
The supply current drain is 700 µA, which is essentially independent of the supply voltage.
- Can the LM124AJB operate in single power supply systems?
Yes, the LM124AJB can operate in single power supply systems and is particularly useful in such configurations.
- What are some common applications of the LM124AJB?
Common applications include transducer amplifiers, DC gain blocks, conventional op-amp circuits, and interface electronics in digital systems.
- Is the LM124AJB compatible with all forms of logic?
Yes, the LM124AJB is compatible with all forms of logic.
