Overview
The ADA4084-2ARMZ-RL is a dual operational amplifier (op-amp) produced by Analog Devices Inc. This component is part of the ADA4084 series, which includes single, dual, and quad configurations. The ADA4084-2 is designed for single-supply applications, offering both AC and precision DC performance. It features rail-to-rail inputs and outputs, making it suitable for a wide range of applications requiring high signal-to-noise ratios and precision amplification.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Bandwidth | 10 MHz typical | - |
| Supply Voltage Range | +3 V to +30 V (or ±1.5 V to ±15 V) | - |
| Input Voltage Range | 0 V to 3 V (single supply), -15 V to +15 V (dual supply) | - |
| Offset Voltage | 100 μV maximum | SOIC package, TA = 25°C |
| Offset Voltage Drift | 0.5 to 1.75 μV/°C | -40°C ≤ TA ≤ +125°C |
| Input Bias Current | 140 to 250 nA | -40°C ≤ TA ≤ +125°C |
| Input Offset Current | 5 to 25 nA | -40°C ≤ TA ≤ +125°C |
| Common-Mode Rejection Ratio (CMRR) | 64 to 88 dB (single supply), 106 to 124 dB (dual supply) | VCM = 0 V to 3 V (single supply), VCM = ±14 V (dual supply) |
| Large Signal Voltage Gain | 100 to 104 dB | RL = 2 kΩ, 0.5 V ≤ VOUT ≤ 2.5 V |
| Slew Rate | 4.6 V/μs typical | - |
| Noise | 3.9 nV/√Hz typical at 1 kHz | - |
| Operating Temperature Range | -40°C to +125°C | - |
| Package Options | 8-lead SOIC, 8-lead MSOP, 8-lead LFCSP | - |
Key Features
- Rail-to-rail inputs and outputs, enabling high signal-to-noise ratios and the ability to build multistage filters in single-supply systems.
- Wide bandwidth of 10 MHz and high slew rate of 4.6 V/μs, suitable for AC and precision DC applications.
- Low noise of 3.9 nV/√Hz at 1 kHz, making it ideal for precision amplification.
- Low offset voltage of 100 μV maximum and low offset voltage drift.
- High common-mode rejection ratio (CMRR) and large signal voltage gain.
- Operates over a wide supply voltage range from +3 V to +30 V (or ±1.5 V to ±15 V).
- Specified over the industrial temperature range of -40°C to +125°C.
Applications
- Battery-powered instrumentation and portable telecommunications equipment.
- High-side and low-side sensing in various industrial and automotive applications.
- Power supply control and protection circuits.
- DAC output amplifiers and ADC input buffers.
- Filters and instrumentation, including multistage filters in single-supply systems.
- Amplifiers or buffers for transducers with wide output ranges, such as Hall effect, piezoelectric, and resistive transducers.
Q & A
- What is the bandwidth of the ADA4084-2?
The ADA4084-2 has a bandwidth of 10 MHz typical.
- What is the supply voltage range for the ADA4084-2?
The ADA4084-2 operates from +3 V to +30 V (or ±1.5 V to ±15 V).
- What are the key features of the ADA4084-2?
The ADA4084-2 features rail-to-rail inputs and outputs, wide bandwidth, low noise, low offset voltage, and high CMRR.
- What are some common applications for the ADA4084-2?
Common applications include battery-powered instrumentation, high-side and low-side sensing, power supply control, DAC output amplifiers, and ADC input buffers.
- What is the operating temperature range of the ADA4084-2?
The ADA4084-2 is specified over the industrial temperature range of -40°C to +125°C.
- What package options are available for the ADA4084-2?
The ADA4084-2 is available in 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP packages.
- What is the slew rate of the ADA4084-2?
The ADA4084-2 has a slew rate of 4.6 V/μs typical.
- How much noise does the ADA4084-2 generate?
The ADA4084-2 generates 3.9 nV/√Hz of noise at 1 kHz.
- What is the input bias current of the ADA4084-2?
The input bias current of the ADA4084-2 is 140 to 250 nA over the temperature range of -40°C to +125°C.
- What is the common-mode rejection ratio (CMRR) of the ADA4084-2?
The CMRR of the ADA4084-2 is 64 to 88 dB for single supply and 106 to 124 dB for dual supply.
