Overview
The ADA4891-1WARJZ-R7 is a high-speed, low-cost CMOS operational amplifier produced by Analog Devices Inc. This single-supply amplifier is known for its high performance and versatility, making it suitable for a variety of applications. It features a rail-to-rail output stage, allowing the output to swing to within 50mV of each supply rail, which enhances the dynamic range. The ADA4891-1 is particularly useful in imaging applications, consumer video, active filters, and other high-speed signal processing tasks.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| -3 dB Bandwidth (G = +1) | 220 | MHz | ||
| Slew Rate (G = +2, VO = 2 V step) | 170 | V/μs | ||
| Settling Time to 0.1% (G = +2, VO = 2 V step) | 28 | ns | ||
| Input Offset Voltage | -2.5 | -2.5 | 2.5 | mV |
| Input Bias Current | -50 | 2 | 50 | pA |
| Common-Mode Rejection Ratio (CMRR) | 87 | dB | ||
| Output Voltage Swing (RL = 1 kΩ to 1.5 V) | 0.01 | 2.98 | V | |
| Output Current | 125 | mA | ||
| Supply Voltage Range | 2.7 | 5.5 | V | |
| Quiescent Current per Amplifier | 3.5 | mA | ||
| Operating Temperature Range | -40 | 125 | °C |
Key Features
- High speed and fast settling with a -3 dB bandwidth of 220 MHz (G = +1) and a slew rate of 170 V/μs.
- Rail-to-rail output stage, allowing the output to swing to within 50mV of each supply rail.
- Low input offset voltage of ±2.5 mV typical and low input bias current of 2 pA typical.
- Low distortion and fast settling time, making it ideal for active filter applications and imaging.
- Single-supply operation with a wide supply range from 2.7 V to 5.5 V.
- Low power consumption with a quiescent current of 3.5 mA per amplifier.
- Compact 5-lead SOT-23 package.
Applications
- Imaging applications, such as consumer video, CCD buffers, and contact image sensor buffers.
- Active filters due to its low distortion and fast settling time.
- Coaxial cable drivers and clock buffers.
- Photodiode preamps.
- Automotive applications, as it is qualified for automotive use.
Q & A
- What is the -3 dB bandwidth of the ADA4891-1WARJZ-R7?
The -3 dB bandwidth of the ADA4891-1WARJZ-R7 is 220 MHz at a gain of +1.
- What is the slew rate of the ADA4891-1WARJZ-R7?
The slew rate of the ADA4891-1WARJZ-R7 is 170 V/μs for a gain of +2 and a 2 V step input.
- What is the settling time to 0.1% for the ADA4891-1WARJZ-R7?
The settling time to 0.1% for the ADA4891-1WARJZ-R7 is 28 ns for a gain of +2 and a 2 V step input.
- What is the input offset voltage of the ADA4891-1WARJZ-R7?
The input offset voltage of the ADA4891-1WARJZ-R7 is typically ±2.5 mV.
- What is the input bias current of the ADA4891-1WARJZ-R7?
The input bias current of the ADA4891-1WARJZ-R7 is typically 2 pA.
- What is the output voltage swing of the ADA4891-1WARJZ-R7?
The output voltage swing of the ADA4891-1WARJZ-R7 is from 0.01 V to 2.98 V for a load resistance of 1 kΩ to 1.5 V.
- What is the supply voltage range for the ADA4891-1WARJZ-R7?
The supply voltage range for the ADA4891-1WARJZ-R7 is from 2.7 V to 5.5 V.
- What is the quiescent current per amplifier for the ADA4891-1WARJZ-R7?
The quiescent current per amplifier for the ADA4891-1WARJZ-R7 is typically 3.5 mA.
- What is the operating temperature range for the ADA4891-1WARJZ-R7?
The operating temperature range for the ADA4891-1WARJZ-R7 is from -40°C to 125°C.
- What are some common applications of the ADA4891-1WARJZ-R7?
The ADA4891-1WARJZ-R7 is commonly used in imaging applications, active filters, coaxial cable drivers, clock buffers, and photodiode preamps.
- Is the ADA4891-1WARJZ-R7 qualified for automotive applications?
Yes, the ADA4891-1WARJZ-R7 is qualified for automotive applications).
