Overview
The ADA4891-2ARMZ is a high-performance, dual-channel operational amplifier produced by Analog Devices Inc. This CMOS amplifier is designed for low-cost, high-speed applications and is particularly suited for industrial and commercial use. It features true single-supply capability with an input voltage range that extends 300 mV below the negative rail, making it versatile for various signal processing tasks.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | Voltage Feedback Amplifier | |
| Output Type | Rail-to-Rail | |
| Package / Case | MSOP-8 | |
| Number of Channels | 2 Channel | |
| Supply Voltage - Min | 2.7 V | |
| Supply Voltage - Max | 5.5 V | |
| GBP - Gain Bandwidth Product | 105 MHz | |
| SR - Slew Rate | 210 V/us | |
| Vos - Input Offset Voltage | 2.5 mV | |
| Input Bias Current | 50 pA | |
| Operating Supply Current | 8.8 mA | |
| Output Current per Channel | 125 mA | |
| CMRR - Common Mode Rejection Ratio | 88 dB | |
| en - Input Voltage Noise Density | 9 nV/sqrt Hz | |
| PSRR - Power Supply Rejection Ratio | 65 dB | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | +125°C |
Key Features
- High speed and fast settling with a -3 dB bandwidth of 220 MHz (G = +1) and a slew rate of 210 V/μs.
- True single-supply capability with an input voltage range extending 300 mV below the negative rail.
- Rail-to-rail output and input stages.
- Low power consumption with an operating supply current of 8.8 mA per amplifier.
- High linearity and low distortion, with 79 dBc SFDR at 1 MHz.
- Qualified for automotive applications and operates over an extended temperature range of -40°C to +125°C.
- CMOS technology with a high common-mode rejection ratio (CMRR) of 88 dB.
Applications
- Automotive infotainment systems and 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 ADA4891-2ARMZ amplifier type?
The ADA4891-2ARMZ is a voltage feedback operational amplifier.
- What is the package type of the ADA4891-2ARMZ?
The ADA4891-2ARMZ comes in an MSOP-8 package.
- What is the gain bandwidth product of the ADA4891-2ARMZ?
The gain bandwidth product is 105 MHz.
- What is the slew rate of the ADA4891-2ARMZ?
The slew rate is 210 V/μs.
- What is the input offset voltage of the ADA4891-2ARMZ?
The input offset voltage is 2.5 mV.
- What is the operating supply current of the ADA4891-2ARMZ?
The operating supply current is 8.8 mA per amplifier.
- What is the output current per channel of the ADA4891-2ARMZ?
The output current per channel is 125 mA.
- What is the common-mode rejection ratio (CMRR) of the ADA4891-2ARMZ?
The CMRR is 88 dB.
- What is the power supply rejection ratio (PSRR) of the ADA4891-2ARMZ?
The PSRR is 65 dB.
- What is the operating temperature range of the ADA4891-2ARMZ?
The operating temperature range is -40°C to +125°C.
