Overview
The LM7321QMFX/NOPB is a single rail-to-rail input and output operational amplifier from Texas Instruments. This device is part of the LM732xx family, known for its wide operating voltage range, high output current, and unlimited capacitive load tolerance. The LM7321QMFX/NOPB is designed to operate efficiently, requiring only 1 mA of supply current per op amp while achieving a high slew rate of 18 V/µs and a unity gain bandwidth of 20 MHz. It is fully specified for operation at various supply voltages, including 2.7 V, ±5 V, and ±15 V, making it versatile for different applications.
Key Specifications
| Parameter | Test Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VS) | 2.5 | 32 | V | ||
| Output Current | +65 mA / -100 mA | mA | |||
| Slew Rate | AV = +1, VI = 20-V Step | 12.3 | 18 | V/µs | |
| Unity Gain Frequency | RL = 2 kΩ, CL = 20 pF | 9 | 11.3 | MHz | |
| Gain Bandwidth Product | f = 50 kHz | 16 | 20 | MHz | |
| Input Common-Mode Voltage | 0.3-V Beyond Rails | V | |||
| Input Voltage Noise | f = 2 kHz | 14.3 | 15 | nV/√Hz | |
| Input Current Noise | f = 2 kHz | 1.35 | 1.3 | pA/√Hz | |
| Supply Current/Channel | 1.1 | 1.7 | 2.5 | mA | |
| Total Harmonic Distortion + Noise | f = 1 kHz, RL = 100 kΩ, AV = +2 | -79 | -86 | dB |
Key Features
- Wide Supply Voltage Range: 2.5 V to 32 V
- High Output Current: +65 mA / -100 mA
- Unlimited Capacitive Load Tolerance
- High Slew Rate: 18 V/µs
- High Unity Gain Bandwidth: 20 MHz
- Rail-to-Rail Input and Output
- Low Input Voltage Noise: 15 nV/√Hz
- Low Input Current Noise: 1.3 pA/√Hz
- Low Supply Current: 1.1 mA per channel
- High Common-Mode Rejection Ratio (CMRR): Up to 85 dB
- High Power Supply Rejection Ratio (PSRR): Up to 80 dB
Applications
The LM7321QMFX/NOPB is suitable for a variety of applications due to its robust performance and versatility. These include:
- Industrial Automation: For high-precision and high-reliability applications.
- Automotive Systems: Where wide operating voltage ranges and high output currents are necessary.
- Medical Devices: Requiring low noise and high accuracy.
- Aerospace and Defense: For applications needing high reliability and performance over a wide temperature range.
- Audio and Video Equipment: Benefiting from the high slew rate and low distortion.
Q & A
- What is the supply voltage range of the LM7321QMFX/NOPB?
The supply voltage range is from 2.5 V to 32 V.
- What is the maximum output current of the LM7321QMFX/NOPB?
The maximum output current is +65 mA / -100 mA.
- Does the LM7321QMFX/NOPB support unlimited capacitive loads?
Yes, it supports unlimited capacitive loads without oscillations.
- What is the slew rate of the LM7321QMFX/NOPB?
The slew rate is 18 V/µs.
- What is the unity gain bandwidth of the LM7321QMFX/NOPB?
The unity gain bandwidth is 20 MHz.
- What is the input voltage noise of the LM7321QMFX/NOPB?
The input voltage noise is 15 nV/√Hz.
- What is the supply current per channel for the LM7321QMFX/NOPB?
The supply current per channel is 1.1 mA.
- What are the typical applications of the LM7321QMFX/NOPB?
Typical applications include industrial automation, automotive systems, medical devices, aerospace and defense, and audio/video equipment.
- What is the common-mode rejection ratio (CMRR) of the LM7321QMFX/NOPB?
The CMRR is up to 85 dB.
- What is the power supply rejection ratio (PSRR) of the LM7321QMFX/NOPB?
The PSRR is up to 80 dB.
