Overview
The OP90GSZ from Analog Devices Inc. is a high-performance, micropower operational amplifier designed for precision and low power consumption. It operates from a single supply of 1.6 V to 36 V or from dual supplies of ±0.8 V to ±18 V, making it versatile for various applications. The OP90GSZ features a low input offset voltage, high open-loop gain, and excellent power supply rejection ratio (PSRR), which are crucial for maintaining precision in battery-powered and low-voltage systems.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | VS = ±1.5 V to ±15 V, TA = 25°C | 125 | 450 | µV | |
| Input Offset Current | IOS | VCM = 0 V | 0.4 | 5 | nA | |
| Input Bias Current | IB | VCM = 0 V | 4.0 | 25 | nA | |
| Large-Signal Voltage Gain | AVO | VS = ±15 V, VO = ±10 V | 700,000 | V/mV | ||
| Power Supply Rejection Ratio | PSRR | 5.6 | µV/V | |||
| Common Mode Rejection Ratio | CMRR | 100 | dB | |||
| Operating Supply Current | 20 | µA | ||||
| Output Current | 5 | mA | ||||
| Operating Temperature Range | -40 | 85 | °C | |||
| Package | 8-lead SOIC |
Key Features
- Low Input Offset Voltage: The OP90GSZ has an input offset voltage of 125 µV to 450 µV, ensuring high precision in low-voltage applications.
- High Open-Loop Gain: With a gain exceeding 700,000, this op-amp is suitable for applications requiring high gain accuracy.
- Excellent PSRR and CMRR: The device features a PSRR of under 5.6 µV/V and a CMRR better than 100 dB, minimizing offset voltage changes and ensuring high common-mode rejection.
- Low Power Consumption: It draws less than 20 µA of quiescent supply current, making it ideal for battery-powered and solar-powered systems.
- Wide Operating Voltage Range: The OP90GSZ operates from a single supply of 1.6 V to 36 V or from dual supplies of ±0.8 V to ±18 V.
- Zero-In, Zero-Out Operation: The input and output ranges include ground, allowing for true “zero-in, zero-out” operation.
Applications
- Battery-Powered Systems: Ideal for battery-powered instruments, remote sensors, and other low-power devices due to its low quiescent current and wide operating voltage range.
- Portable Instruments: Suitable for portable instruments that require precision and low power consumption.
- Voltage References: Can be used in battery-powered voltage references, such as the circuit described in the datasheet, which draws only 17 µA of supply current.
- Solar Powered Systems: Applicable in solar-powered systems where low power consumption is critical.
Q & A
- What is the input offset voltage of the OP90GSZ? The input offset voltage of the OP90GSZ is between 125 µV and 450 µV.
- What is the operating temperature range of the OP90GSZ? The operating temperature range is -40°C to 85°C.
- How much quiescent supply current does the OP90GSZ draw? The OP90GSZ draws less than 20 µA of quiescent supply current.
- What is the package type of the OP90GSZ? The OP90GSZ comes in an 8-lead SOIC package.
- What is the maximum output current of the OP90GSZ? The OP90GSZ can deliver over 5 mA of output current to a load.
- Is the OP90GSZ RoHS compliant? Yes, the OP90GSZ is RoHS compliant.
- What is the power supply rejection ratio (PSRR) of the OP90GSZ? The PSRR of the OP90GSZ is under 5.6 µV/V.
- Can the OP90GSZ operate from a single supply or dual supplies? The OP90GSZ can operate from a single supply of 1.6 V to 36 V or from dual supplies of ±0.8 V to ±18 V.
- What is the common-mode rejection ratio (CMRR) of the OP90GSZ? The CMRR of the OP90GSZ is better than 100 dB.
- Is the OP90GSZ suitable for battery-powered voltage references? Yes, the OP90GSZ is suitable for battery-powered voltage references due to its low power consumption and high precision.
