Overview
The ADA4891-4ARUZ-RL is a high-speed, rail-to-rail operational amplifier produced by Analog Devices Inc. This quad amplifier is part of the ADA4891 family, which includes single, dual, triple, and quad configurations. It is designed to offer high performance at a low cost, making it versatile for various applications. The ADA4891-4 features true single-supply capability with an input voltage range that extends 300 mV below the negative rail, and it operates over a wide supply range from 2.7 V to 5.5 V.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| −3 dB Small-Signal Bandwidth (G = +1) | VO = 0.2 V p-p | - | 220 | - | MHz |
| Slew Rate | - | - | 170 | - | V/μs |
| Settling Time to 0.1% | - | - | 28 | - | ns |
| Supply Voltage | - | 2.7 | - | 5.5 | V |
| Operating Temperature Range | - | −40 | - | +125 | °C |
| Power Supply Rejection Ratio (PSRR) Positive | +VS = 3 V to 3.15 V, −VS = 0 V | - | 76 | - | dB |
| Power Supply Rejection Ratio (PSRR) Negative | +VS = 3 V, −VS = −0.15 V to 0 V | - | 72 | - | dB |
| Linear Output Current | - | - | 125 | - | mA |
| Quiescent Current per Amplifier | - | - | 4.4 | - | mA |
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.
- Wide supply range: 2.7 V to 5.5 V.
- Output swings to within 50 mV of supply rails.
- Low distortion: 79 dBc SFDR at 1 MHz.
- Low power consumption: 4.4 mA per amplifier.
- Qualified for automotive applications.
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 sensor and buffers.
Q & A
- What is the typical bandwidth of the ADA4891-4 at a gain of +1?
The typical bandwidth of the ADA4891-4 at a gain of +1 is 220 MHz.
- What is the slew rate of the ADA4891-4?
The slew rate of the ADA4891-4 is 170 V/μs.
- What is the operating temperature range of the ADA4891-4?
The operating temperature range of the ADA4891-4 is from −40°C to +125°C).
- What is the supply voltage range for the ADA4891-4?
The supply voltage range for the ADA4891-4 is from 2.7 V to 5.5 V).
- How much current does each amplifier in the ADA4891-4 consume?
Each amplifier in the ADA4891-4 consumes approximately 4.4 mA of quiescent current).
- What are some common applications of the ADA4891-4?
The ADA4891-4 is commonly used in automotive infotainment systems, automotive driver assistance systems, imaging, consumer video, active filters, coaxial cable drivers, clock buffers, photodiode preamps, and contact image sensor buffers).
- Does the ADA4891-4 support single-supply operation?
- What is the linear output current capability of the ADA4891-4?
The ADA4891-4 can deliver a linear output current of up to 125 mA).
- How does the ADA4891-4 perform in terms of distortion?
The ADA4891-4 has a low distortion of 79 dBc SFDR at 1 MHz).
- Is the ADA4891-4 qualified for automotive applications?
