Overview
The LM321MFX-NS is a low power single operational amplifier produced by National Semiconductor (now part of Texas Instruments). This device is designed to offer high performance and economy in low power systems. It features a high unity gain frequency and a specified 0.4-V/µs slew rate, making it suitable for a wide range of applications. The LM321MFX-NS operates with a single or dual power supply voltage, ranging from 3 V to 32 V, and is available in the SOT-23 package.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Supply Voltage Range | 3 V to 32 V | V |
| Quiescent Current (at 5 V) | 430 µA | µA |
| Slew Rate | 0.4 V/µs | V/µs |
| Output Current per Channel | 40 mA | mA |
| Input Offset Voltage | 0.3 mV | mV |
| Common Mode Rejection Ratio (CMRR) | 85 dB | dB |
| Power Supply Rejection Ratio (PSRR) | 100 dB | dB |
| Input Bias Current | 45 nA | nA |
| Gain-Bandwidth Product | 1 MHz | MHz |
| Package Type | SOT-23-5 |
Key Features
- High unity gain frequency and specified 0.4-V/µs slew rate.
- Low supply current of 430 µA per amplifier at 5 V.
- Wide supply voltage range from 3 V to 32 V.
- Stable with high capacitive loads.
- Single version of the LM324, available in SOT-23 package.
- True-differential inputs and ability to operate in single or dual supply configurations.
- High CMRR of 85 dB and high input impedance for high accuracy in non-inverting circuit configurations.
Applications
- Instrumentation: Suitable for applications requiring high accuracy and stability, such as thermocouples, RTDs, and strain bridges.
- Sensors and Controls: Used in various sensor and control circuits due to its high CMRR and stability.
- Wireless Base Station Control Circuits: Ideal for wireless communication systems.
- Optical Network Control Circuits: Used in optical communication systems.
- Power Supplies and Chargers: Can be used in power supply and charger circuits due to its stability and wide supply voltage range.
- Precision Filters: Suitable for precision filtering applications.
- Shunt Current Measurements: Used in current measurement circuits).
Q & A
- What is the typical quiescent current of the LM321MFX-NS at 5 V?
The typical quiescent current is 430 µA per amplifier at 5 V).
- What is the slew rate of the LM321MFX-NS?
The slew rate is 0.4 V/µs).
- What is the supply voltage range of the LM321MFX-NS?
The supply voltage range is from 3 V to 32 V).
- What package type is the LM321MFX-NS available in?
The LM321MFX-NS is available in the SOT-23-5 package).
- What are some common applications of the LM321MFX-NS?
Common applications include instrumentation, sensors and controls, wireless base station control circuits, optical network control circuits, power supplies, and precision filters).
- What is the input bias current of the LM321MFX-NS?
The input bias current is 45 nA).
- Can the LM321MFX-NS drive large capacitive loads?
Yes, the LM321MFX-NS is stable with high capacitive loads).
- What is the gain-bandwidth product of the LM321MFX-NS?
The gain-bandwidth product is 1 MHz).
- Is the LM321MFX-NS suitable for single supply applications?
Yes, the LM321MFX-NS can operate in single supply as well as dual supply configurations).
- What is the common mode rejection ratio (CMRR) of the LM321MFX-NS?
The CMRR is 85 dB).
