Overview
The LM324DR2, produced by onsemi, is a part of the LM324 series of low-cost, quad operational amplifiers. These amplifiers are designed for single supply applications and offer several distinct advantages over standard operational amplifier types. They can operate at supply voltages ranging from 3.0 V to 32 V, with quiescent currents significantly lower than those of the MC1741. The LM324 series is known for its true differential input stage and the ability to include the negative supply within the common mode input range, eliminating the need for external biasing components in many applications.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage Range | 3.0 V to 32 V | |
| Quiescent Current | About one-fifth of MC1741 per amplifier | |
| Input Offset Voltage | ±3 mV (LM324), ±2 mV (LM324B) | VCC = 5.0 V, VEE = GND, TA = 25°C |
| Input Bias Current | 50 nA maximum | Across –40°C to 125°C |
| Common Mode Rejection Ratio (CMRR) | 70 dB to 85 dB | RS ≤ 10 kΩ |
| Power Supply Rejection Ratio (PSRR) | 65 dB to 100 dB | |
| Operating Temperature Range | 0°C to +70°C (LM324DR2) | |
| Package Type | SOIC-14 (Pb-Free) |
Key Features
- True Differential Input Stage: Allows for true differential input signals.
- Single Supply Operation: Can operate from a single supply voltage as low as 3.0 V or as high as 32 V.
- Short Circuited Protected Outputs: Outputs are protected against short circuits.
- Low Input Offset Voltage: Low input offset voltage of ±3 mV (LM324) or ±2 mV (LM324B).
- ESD Rating: 2 kV (HBM), 1.5 kV (CDM) for B versions.
- Integrated RF and EMI Filter: For improved noise rejection in B versions.
Applications
- 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
Q & A
- What is the supply voltage range for the LM324DR2?
The supply voltage range for the LM324DR2 is from 3.0 V to 32 V.
- What is the quiescent current of the LM324DR2 compared to the MC1741?
The quiescent current of the LM324DR2 is about one-fifth of that of the MC1741 per amplifier.
- What is the input offset voltage of the LM324DR2?
The input offset voltage of the LM324DR2 is ±3 mV.
- Does the LM324DR2 have short circuit protection?
- What is the common mode rejection ratio (CMRR) of the LM324DR2?
The CMRR of the LM324DR2 is between 70 dB to 85 dB.
- What is the operating temperature range for the LM324DR2?
The operating temperature range for the LM324DR2 is from 0°C to +70°C.
- In what package type is the LM324DR2 available?
The LM324DR2 is available in a SOIC-14 (Pb-Free) package.
- What are some common applications of the LM324DR2?
Common applications include merchant network and server power supply units, multi-function printers, power supplies, mobile chargers, and various consumer appliances.
- Does the LM324DR2 have integrated RF and EMI filtering?
The B versions of the LM324 series, which are drop-in replacements, include integrated RF and EMI filters.
- What is the ESD rating for the LM324B versions?
The ESD rating for the B versions is 2 kV (HBM) and 1.5 kV (CDM).
