Overview
The ADA4891-4ARZ from Analog Devices Inc. is a quad, low-cost CMOS high-speed operational amplifier. This device is part of the ADA4891 family, which includes single, dual, triple, and quad channel configurations. It is designed to offer high performance at a low cost, featuring true single-supply capability and an input voltage range that extends 300 mV below the negative rail. The amplifier is suitable for a wide range of applications due to its high speed, low distortion, and rail-to-rail output stage, which enables the output to swing to within 50 mV of each supply rail.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| −3 dB Small-Signal Bandwidth (G = +1, VO = 0.2 V p-p) | - | 220 MHz | - | MHz |
| Slew Rate | - | 170 V/μs | - | V/μs |
| Settling Time to 0.1% | - | 28 ns | - | ns |
| Supply Voltage Range | 2.7 V | - | 5.5 V | V |
| Output Current | - | 125 mA | - | mA |
| Operating Temperature Range | −40°C | - | +125°C | °C |
| Package | - | 14-Lead SOIC_N | - | - |
Key Features
- High speed and fast settling: −3 dB bandwidth of 220 MHz (G = +1) and 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 output to swing to within 50 mV of each supply rail.
- Low distortion: 79 dBc SFDR at 1 MHz.
- Low power consumption: 4.4 mA per amplifier.
- Qualified for automotive applications and operates over an extended temperature range of −40°C to +125°C.
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.
- Clock buffers and photodiode preamps.
Q & A
- What is the typical bandwidth of the ADA4891-4ARZ at a gain of +1?
The typical bandwidth at a gain of +1 is 220 MHz.
- What is the slew rate of the ADA4891-4ARZ?
The slew rate is 170 V/μs.
- What is the settling time to 0.1% for the ADA4891-4ARZ?
The settling time to 0.1% is 28 ns.
- What is the supply voltage range for the ADA4891-4ARZ?
The supply voltage range is from 2.7 V to 5.5 V.
- What is the maximum output current of the ADA4891-4ARZ?
The maximum output current is 125 mA.
- What is the operating temperature range of the ADA4891-4ARZ?
The operating temperature range is from −40°C to +125°C.
- What package type is the ADA4891-4ARZ available in?
The ADA4891-4ARZ is available in a 14-Lead SOIC_N package.
- Is the ADA4891-4ARZ suitable for automotive applications?
Yes, it is qualified for automotive applications.
- What are some common applications of the ADA4891-4ARZ?
Common applications include automotive infotainment and driver assistance systems, imaging, consumer video, active filters, coaxial cable drivers, clock buffers, and photodiode preamps.
- Does the ADA4891-4ARZ have rail-to-rail output capability?
Yes, the ADA4891-4ARZ has a rail-to-rail output stage that enables the output to swing to within 50 mV of each supply rail.
