Overview
The OP481GSZ-REEL, produced by Analog Devices Inc., is a quad ultralow power, single-supply operational amplifier. It is part of the OP481 family, which features rail-to-rail output and is fabricated on Analog Devices' CBCMOS process. This amplifier is designed for applications requiring low power consumption and high precision, making it suitable for a variety of uses in battery-powered devices, safety monitoring, and signal conditioning.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage | 2.7 V to 12 V | |
| Supply Current per Amplifier | 3 μA to 4 μA | VO = 0 V, −40°C ≤ TA ≤ +85°C |
| Output Voltage High (VOH) | 2.925 V to 4.925 V | RL = 100 kΩ to GND, −40°C ≤ TA ≤ +85°C |
| Output Voltage Low (VOL) | 25 mV to 75 mV | RL = 100 kΩ to V+, −40°C ≤ TA ≤ +85°C |
| Short-Circuit Limit (ISC) | ±1.1 mA to ±3.5 mA | |
| Power Supply Rejection Ratio (PSRR) | 76 dB to 95 dB | VS = 2.7 V to 12 V, −40°C ≤ TA ≤ +85°C |
| Slew Rate (SR) | 25 V/ms to 27 V/ms | RL = 100 kΩ, CL = 50 pF |
| Saturation Recovery Time | 65 μs to 120 μs | |
| Gain Bandwidth Product (GBP) | 95 kHz | |
| Phase Margin (φM) | 70 Degrees | |
| Offset Voltage | 1.5 mV | |
| Offset Voltage Drift (ΔVOS/ΔT) | 10 μV/°C | −40°C to +85°C |
Key Features
- Ultralow Power Consumption: The OP481GSZ operates with a supply current of less than 4 μA per amplifier, making it ideal for battery-powered devices and low-power systems.
- Rail-to-Rail Output: The amplifier's output swings to within millivolts of the supply voltage, ensuring maximum signal range.
- Single-Supply Operation: The device can operate from a single supply voltage ranging from 2.7 V to 12 V.
- Precision Bipolar Input: Features a precision bipolar input stage for high accuracy.
- No Phase Reversal: Ensures stable operation without phase reversal, even when the input voltage exceeds the supply voltage.
- Fast Saturation Recovery Time: Quick recovery from saturation, which is beneficial in comparator applications.
Applications
- Comparator Applications: The OP481GSZ's rail-to-rail output and fast saturation recovery time make it suitable for use as a comparator in low-power systems.
- Battery-Powered Instrumentation: Ideal for battery-powered devices due to its ultralow power consumption.
- Safety Monitoring: Used in safety monitoring systems where low power and high precision are critical.
- Remote Sensors: Suitable for remote sensor applications where power efficiency is essential.
- Low Voltage Strain Gage Amplifiers: Used in signal conditioning and interfacing for transducers in low-power systems.
Q & A
- What is the typical supply current of the OP481GSZ?
The typical supply current of the OP481GSZ is 3 μA to 4 μA per amplifier.
- What is the operating voltage range of the OP481GSZ?
The OP481GSZ can operate from a single supply voltage ranging from 2.7 V to 12 V.
- Does the OP481GSZ have rail-to-rail output capability?
Yes, the OP481GSZ features rail-to-rail output, allowing the output to swing to within millivolts of the supply voltage.
- What is the slew rate of the OP481GSZ?
The slew rate of the OP481GSZ is 25 V/ms to 27 V/ms.
- Is the OP481GSZ suitable for comparator applications?
Yes, the OP481GSZ is suitable for comparator applications due to its rail-to-rail output and fast saturation recovery time.
- What are some common applications of the OP481GSZ?
Common applications include battery-powered instrumentation, safety monitoring, remote sensors, and low voltage strain gage amplifiers.
- What is the offset voltage of the OP481GSZ?
The offset voltage of the OP481GSZ is typically 1.5 mV.
- How does the OP481GSZ handle phase reversal?
The OP481GSZ does not exhibit phase reversal, ensuring stable operation even when the input voltage exceeds the supply voltage.
- What is the gain bandwidth product (GBP) of the OP481GSZ?
The gain bandwidth product (GBP) of the OP481GSZ is 95 kHz.
- What is the phase margin of the OP481GSZ?
The phase margin of the OP481GSZ is 70 degrees.
