Overview
The OPA124UA is a precision monolithic FET operational amplifier produced by Texas Instruments (TI), not National Semiconductor, although it was originally developed by Burr-Brown Corporation, which is now part of TI. This amplifier utilizes a Difet (dielectrical isolation) manufacturing process, ensuring outstanding DC and AC performance characteristics. It is designed for use in critical instrumentation applications, offering superior performance in terms of bias current, noise, voltage offset, drift, open-loop gain, and common-mode rejection compared to BIFET and CMOS amplifiers.
Key Specifications
| Parameter | Condition | Min | Max | Units | |
|---|---|---|---|---|---|
| Input Noise Voltage (fO = 10kHz) | - | 6 | 8 | 6 | nV/√Hz |
| Input Bias Current | - | - | - | 1 pA | - |
| Input Offset Voltage | - | - | - | 250 µV | - |
| Input Offset Drift | - | - | - | 2 µV/°C | - |
| Open-Loop Gain | - | 120 dB | - | - | - |
| Common-Mode Rejection Ratio | - | 100 dB | - | - | - |
| Supply Voltage Range | - | ±4.5 V | - | ±18 V | - |
| Operating Temperature Range | - | -25 °C | - | 85 °C | - |
| Slew Rate | - | 1 V/µs | - | - | - |
| Unity Gain Bandwidth | - | 1.5 MHz | - | - | - |
Key Features
- Low Noise: 6 nV/√Hz at 10 kHz
- Low Bias Current: 1 pA max
- Low Offset: 250 µV max and 2 µV/°C max drift
- High Open-Loop Gain: 120 dB min
- High Common-Mode Rejection: 100 dB min
- Wide Supply Voltage Range: ±4.5 V to ±18 V
- Fast Settling Time
- Available in 8-Pin Packages (PDIP and SOIC)
Applications
- Audio Processing
- Signal Conditioning
- Data Acquisition Systems
- Instrumentation and Control Systems
- Medical Devices
- Automotive Electronics
- Industrial Automation
Q & A
- What is the input noise voltage of the OPA124UA at 10 kHz?
The input noise voltage of the OPA124UA at 10 kHz is 6 nV/√Hz.
- What is the maximum input bias current of the OPA124UA?
The maximum input bias current of the OPA124UA is 1 pA.
- What is the typical unity gain bandwidth of the OPA124UA?
The typical unity gain bandwidth of the OPA124UA is 1.5 MHz.
- What is the operating temperature range of the OPA124UA?
The operating temperature range of the OPA124UA is -25°C to 85°C.
- In what packages is the OPA124UA available?
The OPA124UA is available in 8-pin PDIP and 8-pin SOIC packages.
- What are some common applications of the OPA124UA?
The OPA124UA is commonly used in audio processing, signal conditioning, data acquisition systems, instrumentation, medical devices, automotive electronics, and industrial automation.
- What is the slew rate of the OPA124UA?
The slew rate of the OPA124UA is 1 V/µs.
- What is the common-mode rejection ratio of the OPA124UA?
The common-mode rejection ratio of the OPA124UA is 100 dB min.
- What is the supply voltage range of the OPA124UA?
The supply voltage range of the OPA124UA is ±4.5 V to ±18 V.
- Who is the manufacturer of the OPA124UA?
The OPA124UA is manufactured by Texas Instruments (TI), originally developed by Burr-Brown Corporation.
