Overview
The LM124DR is a quad operational amplifier produced by Texas Instruments. It is designed to operate from a single supply over a wide range of voltages, from 3 V to 32 V, and can also operate from split supplies with a difference between the two supplies ranging from 3 V to 32 V. This device is particularly useful in applications requiring multiple amplifiers, as it integrates four independent high-gain frequency-compensated operational amplifiers in a single package.
The LM124DR is available in a SOIC (D) package with 14 pins and operates over a temperature range of -55°C to 125°C, making it suitable for various environmental conditions. Its low supply-current drain, independent of the supply voltage, adds to its efficiency and versatility.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Input Offset Voltage | 2 mV | 1 mV | 5 mV | mV |
| Input Offset Current | 2 nA | -20 nA | 100 nA | nA |
| Input Bias Current | 30 nA | -300 nA | 300 nA | nA |
| Common-Mode Input Voltage Range | 0 to VCC - 1.5 V | - | - | V |
| Supply Voltage Range (Single Supply) | 3 V to 32 V | 3 V | 32 V | V |
| Supply Voltage Range (Dual Supplies) | ±1.5 V to ±16 V | ±1.5 V | ±16 V | V |
| Supply Current (Typical) | 0.8 mA | 0.7 mA | 1.4 mA | mA |
| Unity-Gain Bandwidth | 1.2 MHz | - | - | MHz |
| Slew Rate (Typical) | 0.5 V/ms | - | - | V/ms |
| Operating Temperature Range | -55°C to 125°C | -55°C | 125°C | °C |
Key Features
- Differential Input Voltage Range equal to the maximum-rated supply voltage: ±32 V
- Internal frequency compensation
- Low supply-current drain independent of supply voltage: 0.8 mA (Typical)
- Low input bias and offset parameters: Input Offset Voltage of 2 mV (Typical), Input Offset Current of 2 nA (Typical), and Input Bias Current of 30 nA (Typical)
- Common-mode input voltage range includes ground, allowing direct sensing near ground
- Rad-tolerant versions available: 50 kRad (Si) TID for certain models
- Wide supply ranges: Single supply from 3 V to 32 V and dual supplies from ±1.5 V to ±16 V
- High common-mode rejection ratio (CMRR) and supply-voltage rejection ratio (kSVR)
Applications
- Transducer amplifiers
- DC amplification blocks
- Conventional operational-amplifier circuits in single-supply-voltage systems
- Interface electronics in digital systems, operating directly from standard 5-V supplies without requiring additional ±15-V supplies
Q & A
- What is the operating temperature range of the LM124DR?
The LM124DR operates over a temperature range of -55°C to 125°C.
- What are the supply voltage ranges for the LM124DR?
The LM124DR can operate from a single supply of 3 V to 32 V and from dual supplies ranging from ±1.5 V to ±16 V.
- What is the typical supply current of the LM124DR?
The typical supply current of the LM124DR is 0.8 mA.
- Does the LM124DR have radiation-tolerant versions?
- What is the unity-gain bandwidth of the LM124DR?
The unity-gain bandwidth of the LM124DR is 1.2 MHz.
- What are the typical input offset voltage and current of the LM124DR?
The typical input offset voltage is 2 mV, and the typical input offset current is 2 nA.
- Can the LM124DR operate with a single 5-V supply?
- What is the common-mode rejection ratio (CMRR) of the LM124DR?
The CMRR of the LM124DR is typically 70 dB to 80 dB.
- What are some common applications of the LM124DR?
- What package types are available for the LM124DR?
The LM124DR is available in a SOIC (D) package with 14 pins.
