Overview
The OP281GSZ is an ultralow power, rail-to-rail output operational amplifier produced by Analog Devices Inc. This dual operational amplifier is designed for low-power applications and features a precision bipolar input stage and an output that swings to within millivolts of the supply voltages. The OP281GSZ is fabricated on Analog Devices' CBCMOS process, ensuring high performance and reliability in various operating conditions.
Key Specifications
| Parameter | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Offset Voltage | VOS | −40°C ≤ TA ≤ +85°C | 1.5 | 2.5 | mV | |
| Input Bias Current | IB | −40°C ≤ TA ≤ +85°C | 3 | 10 | nA | |
| Input Offset Current | IOS | −40°C ≤ TA ≤ +85°C | 0.1 | 7 | nA | |
| Input Voltage Range | 0 | 2 V | V | |||
| Common-Mode Rejection Ratio | CMRR | VCM = 0 V to 2.0 V, −40°C ≤ TA ≤ +85°C | 65 | 95 | dB | |
| Large-Signal Voltage Gain | AVO | RL = 1 MΩ, VO = 0.3 V to 2.7 V, −40°C ≤ TA ≤ +85°C | 5 | 13 | V/mV | |
| Supply Current per Amplifier | ISY | VO = 0 V, −40°C ≤ TA ≤ 85°C | 4 | μA | ||
| Supply Voltage Range | VS | 2.7 | 12 | V |
Key Features
- Ultralow power consumption: Maximum supply current of 4 μA per amplifier.
- Single-supply operation: Compatible with supply voltages from 2.7 V to 12 V.
- Rail-to-rail output swing: Output voltage can swing to within millivolts of the supply voltages.
- Low offset voltage: Typical offset voltage of 1.5 mV.
- No phase reversal: Ensures stable operation without phase reversal.
- Fast saturation recovery time: Suitable for comparator applications in low-power systems.
- Extended industrial temperature range: Specified for operation from −40°C to +85°C.
Applications
- Comparator circuits: Ideal for low-power comparator applications due to its fast saturation recovery time.
- Battery-powered instrumentation: Suitable for battery-powered devices requiring low power consumption.
- Safety monitoring: Used in safety monitoring systems where low power and high reliability are crucial.
- Remote sensors: Applicable in remote sensor systems that require low power and rail-to-rail output swing.
- Low voltage strain gage amplifiers: Used in strain gage applications where low voltage and high precision are necessary.
- Portable equipment: Ideal for portable devices that need to conserve power while maintaining performance.
Q & A
- What is the typical supply current of the OP281GSZ operational amplifier?
The typical supply current of the OP281GSZ is 4 μA per amplifier.
- What is the operating supply voltage range for the OP281GSZ?
The OP281GSZ operates from supply voltages ranging from 2.7 V to 12 V.
- What is the typical offset voltage of the OP281GSZ?
The typical offset voltage of the OP281GSZ is 1.5 mV.
- Does the OP281GSZ support rail-to-rail output swing?
Yes, the OP281GSZ features a rail-to-rail output swing.
- What is the common-mode rejection ratio (CMRR) of the OP281GSZ?
The CMRR of the OP281GSZ is typically 65 dB to 95 dB.
- What are the typical applications of the OP281GSZ?
The OP281GSZ is typically used in comparator circuits, battery-powered instrumentation, safety monitoring, remote sensors, and low voltage strain gage amplifiers.
- What is the temperature range for which the OP281GSZ is specified?
The OP281GSZ is specified for operation over the extended industrial temperature range of −40°C to +85°C.
- What package options are available for the OP281GSZ?
The OP281GSZ is available in 8-lead SOIC and TSSOP packages.
- Does the OP281GSZ have any phase reversal issues?
No, the OP281GSZ does not have phase reversal issues.
- How does the OP281GSZ perform in terms of saturation recovery time?
The OP281GSZ has a fast saturation recovery time, making it suitable for comparator applications in low-power systems.
