Overview
The LM7322MAX/NOPB from Texas Instruments is a dual operational amplifier that offers high performance and versatility. This device is part of the LM732xx family, which features rail-to-rail input and output capabilities, wide operating voltage ranges, and high output currents. The LM7322 is designed to operate efficiently, requiring only 1 mA of supply current per op amp while achieving a 20-MHz unity gain bandwidth and an 18 V/µs slew rate. This makes it suitable for a variety of applications, including industrial, automotive, and communications systems.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | 2.5 | 32 | V | |
| Output Current | +65 | -100 | mA | |
| Gain Bandwidth Product | 20 | MHz | ||
| Slew Rate | 18 | V/µs | ||
| Capacitive Load Tolerance | Unlimited | |||
| Input Common-Mode Voltage | 0.3-V Beyond Rails | |||
| Input Voltage Noise | 15 | nV/√Hz | ||
| Input Current Noise | 1.3 | pA/√Hz | ||
| Supply Current/Channel | 1.1 | mA | ||
| Temperature Range | -40 | 125 | °C |
Key Features
- Rail-to-rail input and output capabilities
- Wide supply voltage range: 2.5 V to 32 V
- High output current: +65 mA / -100 mA
- High gain bandwidth product: 20 MHz
- High slew rate: 18 V/µs
- Unlimited capacitive load tolerance
- Input common-mode voltage range extends 0.3 V beyond the rails
- Low input voltage noise: 15 nV/√Hz
- Low input current noise: 1.3 pA/√Hz
- Low supply current per channel: 1.1 mA
- AEC-Q100 Grade 1 Qualified for automotive applications
Applications
- Driving MOSFETs and power transistors
- Capacitive proximity sensors
- Driving analog optocouplers
- High-side sensing
- Below ground current sensing
- Photodiode biasing
- Driving varactor diodes in PLLs
- Wide voltage range power supplies
- Automotive systems
- International power supplies
Q & A
- What is the supply voltage range of the LM7322?
The LM7322 operates over a supply voltage range of 2.5 V to 32 V.
- What is the output current capability of the LM7322?
The LM7322 can source up to +65 mA and sink up to -100 mA of output current.
- What is the gain bandwidth product of the LM7322?
The gain bandwidth product of the LM7322 is 20 MHz.
- What is the slew rate of the LM7322?
The slew rate of the LM7322 is 18 V/µs.
- Can the LM7322 drive unlimited capacitive loads?
- What is the input common-mode voltage range of the LM7322?
The input common-mode voltage range extends 0.3 V beyond the supply rails.
- What is the input voltage noise of the LM7322?
The input voltage noise of the LM7322 is 15 nV/√Hz.
- What is the supply current per channel for the LM7322?
The supply current per channel for the LM7322 is typically 1.1 mA.
- Is the LM7322 suitable for automotive applications?
- What are some common applications of the LM7322?
The LM7322 is commonly used in driving MOSFETs and power transistors, capacitive proximity sensors, driving analog optocouplers, high-side sensing, and more.
