Overview
The LM2904QDRG4 is a dual operational amplifier (op amp) produced by Texas Instruments. It is part of the next-generation versions of the industry-standard LM2904 devices, offering enhanced features and performance. These op amps are designed to provide outstanding value for cost-sensitive applications, with capabilities such as low offset voltage, common-mode input range to ground, and high differential input voltage capability. The LM2904QDRG4 is suitable for a wide range of applications, including power supplies, motor control, and various industrial and consumer electronics.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 3 | - | 36 | V |
| Quiescent Current per Amplifier | - | 300 | - | µA |
| Unity-Gain Bandwidth | - | 1.2 | - | MHz |
| Input Offset Voltage at 25°C (B, BA versions) | - | - | 3 (B), 2 (BA) | mV |
| Common-Mode Input Voltage Range | V- | - | V+ - 1.5 | V |
| Operating Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | SOIC (D), 8 pins | - |
Key Features
- Wide supply range of 3V to 36V (B, BA versions)
- Low quiescent current of 300µA per amplifier (typical)
- Unity-gain bandwidth of 1.2MHz (B, BA versions)
- Common-mode input voltage range includes ground, enabling direct sensing near ground
- Low input offset voltage: 3mV maximum at 25°C (B versions), 2mV maximum at 25°C (BA versions)
- Internal RF and EMI filter (B, BA versions)
- High ESD (2kV, HBM) protection
- Available in micro-sized packaging and industry standard packages including SOIC, TSSOP, and VSSOP
Applications
- Merchant Network and Server Power Supply Units
- Multi-Function Printers
- Power Supplies and Mobile Chargers
- Motor Control: AC Induction, Brushed DC, Brushless DC, High-Voltage, Low-Voltage, Permanent Magnet, and Stepper Motor
- 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
- Programmable Logic Controllers
- Electronic Point-of-Sale Systems
Q & A
- What is the supply voltage range of the LM2904QDRG4?
The supply voltage range is from 3V to 36V for B and BA versions.
- What is the typical quiescent current per amplifier for the LM2904QDRG4?
The typical quiescent current per amplifier is 300µA.
- What is the unity-gain bandwidth of the LM2904QDRG4?
The unity-gain bandwidth is 1.2MHz for B and BA versions.
- What is the common-mode input voltage range of the LM2904QDRG4?
The common-mode input voltage range includes ground and extends up to V+ - 1.5V.
- What is the maximum input offset voltage at 25°C for the LM2904QDRG4?
The maximum input offset voltage at 25°C is 3mV for B versions and 2mV for BA versions.
- Does the LM2904QDRG4 have internal RF and EMI filters?
Yes, the LM2904QDRG4 has internal RF and EMI filters for B and BA versions.
- What is the ESD protection rating for the LM2904QDRG4?
The ESD protection rating is 2kV (HBM).
- In what types of packages is the LM2904QDRG4 available?
The LM2904QDRG4 is available in micro-sized packaging and industry standard packages including SOIC, TSSOP, and VSSOP.
- What are some common applications of the LM2904QDRG4?
Common applications include power supplies, motor control, desktop PCs, air conditioners, and various industrial and consumer electronics.
- Is the LM2904QDRG4 still in production?
No, the LM2904QDRG4 is marked as obsolete and new designs should consider an alternate product.
