Overview
The ADA4891-1ARZ-R7, produced by Analog Devices Inc., is a high-speed, low-cost CMOS operational amplifier. This single-channel amplifier is part of the ADA4891 family, which includes single, dual, triple, and quad configurations. It is designed to offer high performance with true single-supply capability, making it versatile for various applications. The ADA4891-1 features an input voltage range that extends 300 mV below the negative rail and an output stage that swings within 50 mV of each supply rail, ensuring maximum dynamic range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| −3 dB Small-Signal Bandwidth (G = +1) | 240 | MHz | ||
| Slew Rate (G = +2) | 170 | V/μs | ||
| Settling Time to 0.1% (G = +2) | 28 | ns | ||
| Supply Voltage Range | 2.7 | 5.5 | V | |
| Quiescent Current per Amplifier | 4.4 | mA | ||
| Operating Temperature Range | −40 | 125 | °C | |
| Output Current | 125 | mA | ||
| Input Voltage Noise Density | 9 | nV/√Hz | ||
| Output Voltage Swing (RL = 1 kΩ) | 0.005 | 4.985 | V |
Key Features
- High speed and fast settling time with a −3 dB bandwidth of 240 MHz (G = +1) and a slew rate of 170 V/μs.
- True single-supply capability with an input voltage range extending 300 mV below the negative rail.
- Rail-to-rail output stage, enabling the output to swing within 50 mV of each supply rail.
- Low distortion with a harmonic distortion of −70/−89 dBc at 1 MHz.
- Low power consumption with a quiescent current of 4.4 mA per amplifier.
- Wide operating temperature range from −40°C to 125°C.
- Qualified for automotive applications).
Applications
- Automotive infotainment systems and driver assistance systems.
- Imaging applications, including consumer video, CCD buffers, and contact image sensor buffers).
- Active filters and coaxial cable drivers).
- Photodiode preamps and clock buffers).
- Video operational amplifiers).
Q & A
- What is the typical −3 dB bandwidth of the ADA4891-1ARZ-R7?
The typical −3 dB bandwidth is 240 MHz for a gain of +1.
- What is the slew rate of the ADA4891-1ARZ-R7?
The slew rate is 170 V/μs for a gain of +2).
- What is the settling time to 0.1% for the ADA4891-1ARZ-R7?
The settling time to 0.1% is 28 ns for a gain of +2).
- What is the supply voltage range for the ADA4891-1ARZ-R7?
The supply voltage range is from 2.7 V to 5.5 V).
- What is the quiescent current per amplifier for the ADA4891-1ARZ-R7?
The quiescent current per amplifier is 4.4 mA).
- What is the operating temperature range for the ADA4891-1ARZ-R7?
The operating temperature range is from −40°C to 125°C).
- What is the output current capability of the ADA4891-1ARZ-R7?
The output current is 125 mA).
- Is the ADA4891-1ARZ-R7 qualified for automotive applications?
Yes, it is qualified for automotive applications).
- What are some common applications of the ADA4891-1ARZ-R7?
Common applications include automotive infotainment and driver assistance systems, imaging, active filters, and video operational amplifiers).
- What is the input voltage noise density of the ADA4891-1ARZ-R7?
The input voltage noise density is 9 nV/√Hz at 1 MHz).
