Overview
The ADA4891-4ARZ-R7 is a high-performance, quad-channel CMOS operational amplifier produced by Analog Devices Inc. This amplifier is part of the ADA4891 family, known for its high speed, fast settling time, and low power consumption. It is designed to operate over a wide supply range from 2.7 V to 5.5 V and features true single-supply capability with an input voltage range extending 300 mV below the negative rail. The ADA4891-4 is suitable for various applications requiring high bandwidth, low distortion, and robust performance across a broad temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| −3 dB Small-Signal Bandwidth (G = +1) | 190 MHz (ADA4891-1/2), 175 MHz (ADA4891-3/4) | MHz | ||
| Slew Rate | 170 | V/μs | ||
| Settling Time to 0.1% | 28 | ns | ||
| Supply Voltage Range | 2.7 | 5.5 | V | |
| Operating Temperature Range | −40 | +125 | °C | |
| Input Voltage Range | 300 mV below negative rail | V | ||
| Output Swing | Within 50 mV of supply rails | V | ||
| Linear Output Current | 125 | mA | ||
| Power Consumption per Amplifier | 4.4 | mA |
Key Features
- High speed and fast settling time: −3 dB bandwidth of 220 MHz (G = +1) and slew rate of 170 V/μs.
- Low distortion: 79 dBc SFDR at 1 MHz.
- True single-supply operation with a wide supply range from 2.7 V to 5.5 V.
- Output swings to within 50 mV of supply rails.
- Qualified for automotive applications.
- Low power consumption: 4.4 mA per amplifier.
- Robust performance over an extended temperature range of −40°C to +125°C.
Applications
- Automotive infotainment systems.
- Automotive driver assistance systems.
- Imaging and consumer video applications.
- Active filters and coaxial cable drivers.
- Clock buffers and photodiode preamps.
- Contact image sensors and buffers.
Q & A
- What is the typical −3 dB bandwidth of the ADA4891-4ARZ-R7? The typical −3 dB bandwidth is 220 MHz for a gain of +1.
- What is the slew rate of the ADA4891-4ARZ-R7? The slew rate is 170 V/μs.
- What is the settling time to 0.1% for the ADA4891-4ARZ-R7? The settling time to 0.1% is 28 ns.
- What is the supply voltage range for the ADA4891-4ARZ-R7? The supply voltage range is from 2.7 V to 5.5 V.
- What is the operating temperature range of the ADA4891-4ARZ-R7? The operating temperature range is from −40°C to +125°C.
- What are the key applications of the ADA4891-4ARZ-R7? Key applications include automotive infotainment and driver assistance systems, imaging, consumer video, active filters, coaxial cable drivers, clock buffers, photodiode preamps, and contact image sensors.
- How much power does each amplifier in the ADA4891-4ARZ-R7 consume? Each amplifier consumes 4.4 mA.
- What is the output swing of the ADA4891-4ARZ-R7? The output swings to within 50 mV of the supply rails.
- Is the ADA4891-4ARZ-R7 qualified for automotive applications? Yes, it is qualified for automotive applications.
- What is the linear output current of the ADA4891-4ARZ-R7? The linear output current is 125 mA.
