Overview
The OPA365AIDG4, part of the OPAx365 series, is a high-performance, rail-to-rail, CMOS operational amplifier produced by Texas Instruments. This device is optimized for very low voltage, single-supply applications and features a unique zero-crossover input topology that eliminates input stage crossover distortion. The OPA365AIDG4 is well-suited for applications requiring high speed, low noise, and excellent common-mode rejection ratio (CMRR). It operates over a wide temperature range from −40°C to +125°C and is available in the SOIC-8 package.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Gain Bandwidth Product (GBW) | 50 MHz | At 25°C |
| Slew Rate (SR) | 25 V/µs | VS = 5V, G = +1 at 25°C |
| Settling Time (tS) | 0.3 µs to 0.01% | VS = 5V, 4V Step, G = +1 at 25°C |
| Common-Mode Rejection Ratio (CMRR) | 100 dB (minimum) | −0.1 V ≤ VCM ≤ (V+) + 0.1 V, at TA = −40°C to +125°C |
| Input Offset Voltage (VOS) | 100 µV (typical at 25°C) | |
| Input Bias Current | 0.2 pA (typical at 25°C) | |
| Input Capacitance | Differential: 6 pF, Common-mode: 2 pF | |
| Output Voltage Swing | Within 10 mV of the rails | RL = 10 kΩ, VS = 5.5V |
| Supply Voltage Range | 2.2 V to 5.5 V | |
| Quiescent Current per Amplifier | 4.6 mA (typical at 25°C) | IO = 0 |
Key Features
- Zero-Crossover Input Topology: Eliminates input stage crossover distortion, providing excellent common-mode performance over the entire input range.
- Rail-to-Rail Input and Output: Allows the input common-mode range to include both the negative and positive supplies, and the output voltage swing is within 10 mV of the rails.
- High CMRR and Low Noise: Features a CMRR of 100 dB (minimum) and low noise of 4.5 nV/√Hz at 100 kHz.
- Fast Settling Time: Settles to 0.01% in 0.3 µs, making it suitable for high-speed applications.
- Low Offset and Bias Current: Typical input offset voltage of 100 µV and input bias current of 0.2 pA at 25°C.
- Wide Operating Temperature Range: Specified for operation from −40°C to +125°C.
Applications
- Signal Conditioning: Ideal for conditioning signals in various applications due to its high CMRR and low noise.
- Data Acquisition: Suitable for driving sampling analog-to-digital converters (ADCs) due to its high gain bandwidth and fast settling time.
- Audio and Sensor Amplification: Used in audio applications and sensor amplification due to its rail-to-rail input and output swing and low distortion.
- Cell Phone Power Amplifier Control Loops: Well-suited for control loops in cell phone power amplifiers.
- Defense, Aerospace, and Medical Applications: Supports applications in defense, aerospace, and medical fields due to its high performance and reliability.
- Active Filters and Test Equipment: Used in active filter designs and test equipment due to its high speed and precision).
Q & A
- What is the gain bandwidth product of the OPA365AIDG4?
The gain bandwidth product (GBW) of the OPA365AIDG4 is 50 MHz.
- What is the slew rate of the OPA365AIDG4?
The slew rate (SR) of the OPA365AIDG4 is 25 V/µs at VS = 5V, G = +1, and 25°C).
- What is the common-mode rejection ratio (CMRR) of the OPA365AIDG4?
The CMRR of the OPA365AIDG4 is 100 dB (minimum) over the specified temperature range).
- What is the input offset voltage of the OPA365AIDG4?
The typical input offset voltage (VOS) of the OPA365AIDG4 is 100 µV at 25°C).
- What is the input bias current of the OPA365AIDG4?
The typical input bias current of the OPA365AIDG4 is 0.2 pA at 25°C).
- What is the output voltage swing of the OPA365AIDG4?
The output voltage swing of the OPA365AIDG4 is within 10 mV of the rails).
- What is the supply voltage range for the OPA365AIDG4?
The OPA365AIDG4 operates over a supply voltage range of 2.2 V to 5.5 V).
- What are the typical applications of the OPA365AIDG4?
The OPA365AIDG4 is used in signal conditioning, data acquisition, audio and sensor amplification, cell phone power amplifier control loops, and various other high-performance applications).
- What is the operating temperature range of the OPA365AIDG4?
The OPA365AIDG4 is specified for operation from −40°C to +125°C).
- What package options are available for the OPA365AIDG4?
The OPA365AIDG4 is available in the SOIC-8 package).
