Overview
The OPA659IDBVR is a wideband, unity-gain stable, JFET-input operational amplifier produced by Texas Instruments. This device combines high bandwidth and a high slew rate, making it ideal for applications requiring ultra-high dynamic range and fast signal processing. The OPA659 is particularly suited for high impedance buffering in data acquisition systems, such as oscilloscope front-end amplifiers and machine vision applications, including photodiode transimpedance amplifiers used in wafer inspection and Optical Time-Domain Reflectometry (OTDR).
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Bandwidth (G = 1 V/V) | 650 | MHz |
| Slew Rate (4-V Step) | 2550 | V/μs |
| Input Voltage Noise | 8.9 | nV/√Hz |
| Input Current Noise | 1.8 | fA/√Hz |
| Input Offset Voltage | ±1 to ±5 | mV |
| Common-Mode Input Range | ±2.87 to ±3.37 | V |
| Power Supply Voltage | ±6.5 | V |
| Operating Temperature Range | –40 to 85 | °C |
| Maximum Junction Temperature | 150 | °C |
Key Features
- High bandwidth: 650 MHz at unity gain.
- High slew rate: 2550 V/μs for a 4-V step.
- Excellent total harmonic distortion (THD): –78 dBc at 10 MHz.
- Low input voltage noise: 8.9 nV/√Hz.
- Fast overdrive recovery: 8 ns.
- Fast settling time: 8 ns for a 1% 4-V step.
- High common-mode rejection ratio (CMRR): 68 dB to 70 dB.
- High power-supply rejection ratio (PSRR): 58 dB to 62 dB.
Applications
- Data acquisition systems, such as oscilloscope front-end amplifiers.
- Machine vision applications.
- Photodiode transimpedance amplifiers used in wafer inspection and Optical Time-Domain Reflectometry (OTDR).
- High-speed time-of-flight (TOF) sensing.
Q & A
- What is the bandwidth of the OPA659 at unity gain?
The bandwidth of the OPA659 at unity gain is 650 MHz.
- What is the slew rate of the OPA659 for a 4-V step?
The slew rate of the OPA659 for a 4-V step is 2550 V/μs.
- What is the input voltage noise of the OPA659?
The input voltage noise of the OPA659 is 8.9 nV/√Hz.
- What is the typical operating temperature range for the OPA659?
The typical operating temperature range for the OPA659 is –40°C to 85°C.
- What are some common applications of the OPA659?
The OPA659 is commonly used in data acquisition systems, machine vision applications, photodiode transimpedance amplifiers, and high-speed time-of-flight sensing.
- What is the maximum junction temperature for the OPA659?
The maximum junction temperature for the OPA659 is 150°C.
- What is the power supply voltage range for the OPA659?
The power supply voltage range for the OPA659 is ±6.5 V.
- How does the OPA659 perform in terms of total harmonic distortion (THD)?
The OPA659 has an excellent total harmonic distortion (THD) of –78 dBc at 10 MHz.
- What is the overdrive recovery time of the OPA659?
The overdrive recovery time of the OPA659 is 8 ns.
- What is the settling time of the OPA659 for a 1% 4-V step?
The settling time of the OPA659 for a 1% 4-V step is 8 ns.
