Overview
The OPA2107AU is a precision dual operational amplifier produced by Texas Instruments. It offers high-performance Difet (Dielectrically Isolated FET) technology, combining low noise, low input bias current, and low drift. This dual op amp is designed to provide cost and space savings while maintaining excellent dc and dynamic performance. It is particularly useful in a wide range of precision and low-noise analog circuitry, making it an ideal choice for upgrading designs that currently use BIFET type amplifiers.
Key Specifications
| Parameter | Condition | Min | Max | Units | |
|---|---|---|---|---|---|
| Supply Voltage | ±18V | V | |||
| Input Voltage Range | ±VS ±2V | V | |||
| Differential Input Voltage | Total VS ±4V | V | |||
| Operating Temperature | -25°C | +85°C | °C | ||
| Storage Temperature | -40°C | +125°C | °C | ||
| Input Offset Voltage | VCM = 0V | 0.1mV | 1mV | 2mV | mV |
| Average Drift Over Specified Temperature | 3µV/°C | 10µV/°C | µV/°C | ||
| Input Bias Current | VCM = 0V | 4pA | 10pA | pA | |
| Input Noise Voltage | f = 10kHz | 8nV/√Hz | nV/√Hz | ||
| Power Supply Rejection Ratio | VS = ±10 to ±18V | 80dB | 96dB | dB | |
| Quiescent Current per Amplifier | < 2.5mA | mA |
Key Features
- Low Noise: 8nV/√Hz at 10kHz, making it suitable for low-noise applications.
- Low Input Offset Voltage: Maximum of 1mV and low drift of 10µV/°C.
- Low Input Bias Current: Maximum of 10pA, significantly lower than BIFET op amps.
- Fast Settling Time: 2µs to 0.01%.
- Unity-Gain Stable: Excellent phase margin for ease of use in various applications.
- High Power Supply Rejection Ratio (PSRR): 80dB to 96dB.
- Low Quiescent Current: Under 2.5mA per amplifier.
Applications
- Data Acquisition: Suitable for precision data acquisition systems.
- DAC Output Amplifiers: Ideal for driving DAC outputs.
- Optoelectronics: Used in optoelectronic circuits.
- High-Impedance Sensor Amps: Excellent for high-impedance sensor applications.
- High-Performance Audio Circuitry: Used in high-performance audio systems.
- Medical Equipment and CT Scanners: Suitable for medical equipment and CT scanners due to its high precision and low noise.
Q & A
- What is the input offset voltage of the OPA2107AU?
The input offset voltage of the OPA2107AU is a maximum of 1mV at VCM = 0V and up to 2mV over the specified temperature range.
- What is the input bias current of the OPA2107AU?
The input bias current is a maximum of 10pA at VCM = 0V.
- What is the noise performance of the OPA2107AU?
The OPA2107AU has a very low noise of 8nV/√Hz at 10kHz.
- Is the OPA2107AU unity-gain stable?
Yes, the OPA2107AU is unity-gain stable with an excellent phase margin.
- What are the typical operating temperatures for the OPA2107AU?
The operating temperature range is from -25°C to +85°C.
- What are the common applications of the OPA2107AU?
Common applications include data acquisition, DAC output amplifiers, optoelectronics, high-impedance sensor amps, high-performance audio circuitry, and medical equipment.
- What is the quiescent current per amplifier for the OPA2107AU?
The quiescent current per amplifier is under 2.5mA.
- What is the power supply rejection ratio (PSRR) of the OPA2107AU?
The PSRR is between 80dB and 96dB for supply voltages from ±10V to ±18V.
- How should the power-supply connections be handled for the OPA2107AU?
Power-supply connections should be bypassed with capacitors positioned close to the amplifier pins. Typically, 0.1µF ceramic capacitors are adequate, but larger load currents and fast transient signals may require up to 1µF tantalum bypass capacitors.
- What are the package options available for the OPA2107AU?
The OPA2107AU is available in DIP-8 and SO-8 packages.
