Overview
The LM3900DR is a quadruple Norton operational amplifier produced by Texas Instruments. This device is part of the LM3900 series, which is designed to operate from a single or dual supply over a wide range of voltages. The LM3900DR is characterized for operation from 0°C to 70°C, making it suitable for various general-purpose applications. It features four independent, high-gain frequency-compensated operational amplifiers, each with wide bandwidth and large output voltage swing. The device is also known for its low input bias current and internal frequency compensation, which enhance its stability and performance.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| Supply Voltage (Single Supply) | V | 4.5 | - | 32 |
| Supply Voltage (Dual Supply) | V | ±2.2 | - | ±16 |
| Operating Free-Air Temperature | °C | 0 | - | 70 |
| Input Bias Current (Inverting Input) | nA | 30 | 200 | 300 |
| Unity-Gain Bandwidth | MHz | 2.5 | - | - |
| Supply Voltage Rejection Ratio | dB | 70 | - | - |
| High-Level Output Voltage (No Load) | V | 29.5 | - | - |
| Low-Level Output Voltage | V | 0.09 | - | 0.2 |
| Short-Circuit Output Current | mA | -6 | - | -18 |
| Pulldown Current | mA | 0.5 | - | 1.3 |
| Supply Current (Four Amplifiers, No Load) | mA | 6.2 | - | 10 |
Key Features
- Wide range of supply voltages: Single or dual supplies from 4.5V to 32V.
- Wide bandwidth: Unity-gain bandwidth of 2.5 MHz.
- Large output voltage swing: High-level output voltage up to 29.5V with no load.
- Output short-circuit protection: Unlimited duration of output short circuit to ground at or below 25°C.
- Internal frequency compensation: Ensures stability in various applications.
- Low input bias current: Input bias current as low as 30 nA.
- High supply voltage rejection ratio: 70 dB, enhancing noise immunity.
- Common-mode current biasing: Allows operation with signal levels near or below ground.
Applications
The LM3900DR is versatile and can be used in most standard general-purpose operational amplifier applications. It is particularly suitable for:
- DC amplifiers in single-power-supply modes.
- Audio and video signal processing.
- Instrumentation and measurement systems.
- Control systems and feedback loops.
- Power supply regulation and monitoring.
Q & A
- What is the operating temperature range of the LM3900DR?
The LM3900DR operates from 0°C to 70°C.
- What are the supply voltage ranges for the LM3900DR?
The device can operate from a single supply of 4.5V to 32V or from dual supplies of ±2.2V to ±16V.
- What is the unity-gain bandwidth of the LM3900DR?
The unity-gain bandwidth is 2.5 MHz.
- Does the LM3900DR have output short-circuit protection?
- What is the input bias current of the LM3900DR?
The input bias current is as low as 30 nA.
- What is the supply voltage rejection ratio of the LM3900DR?
The supply voltage rejection ratio is 70 dB.
- Can the LM3900DR operate with signal levels near or below ground?
- What are the package options for the LM3900DR?
The LM3900DR is available in SOIC (D) and PDIP (N) packages.
- Is the LM3900DR recommended for new designs?
No, the LM3900DR is not recommended for new designs due to its NRND status.
- What is the typical supply current for the LM3900DR?
The typical supply current for four amplifiers with no load is 6.2 mA to 10 mA.
