Overview
The OPA858IDSGR from Texas Instruments is a high-performance, wideband operational amplifier designed for various high-speed applications. It features CMOS inputs and is optimized for use in transimpedance and voltage amplifier configurations. The amplifier boasts a 5.5 GHz gain bandwidth product (GBWP), making it suitable for applications requiring high closed-loop bandwidths. It is particularly useful in optical Time-of-Flight (ToF) systems, high-resolution LIDAR systems, and other applications that demand low noise and high gain front ends.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain Bandwidth Product (GBWP) | 5.5 GHz | |
| Gain | ≥ 7 V/V (Stable) | |
| Bias Current (MOSFET Inputs) | 10 pA | |
| Input Voltage Noise | 2.5 nV/√Hz | |
| Slew Rate | 2000 V/µs | |
| Input Capacitance | Common-Mode: 0.6 pF, Differential: 0.2 pF | |
| Input Common-Mode Range | 1.4 V from Positive Supply, Includes Negative Supply | |
| Supply Voltage Range | 3.3 V to 5.25 V | |
| Quiescent Current | 20.5 mA | |
| Package | 8-Pin WSON (DSG) | |
| Operating Temperature Range | -40°C to 125°C |
Key Features
- High Gain Bandwidth Product: 5.5 GHz
- Decompensated, Gain ≥ 7 V/V (Stable)
- Ultra-Low Bias Current MOSFET Inputs: 10 pA
- Low Input Voltage Noise: 2.5 nV/√Hz
- High Slew Rate: 2000 V/µs
- Low Input Capacitance: Common-Mode 0.6 pF, Differential 0.2 pF
- Wide Input Common-Mode Range
- Feedback Pin (FB) for Simplified Feedback Network Connection
- Available in 8-Pin WSON Package
- Temperature Range: –40 to +125°C
Applications
The OPA858IDSGR is optimized for various high-speed applications, including:
- Optical Time-of-Flight (ToF) systems
- High-resolution LIDAR systems
- High-speed data acquisition systems
- Transimpedance amplifiers (TIAs) requiring high closed-loop bandwidths
- Applications with weak signal inputs that require low-noise and high-gain front ends
Q & A
- What is the gain bandwidth product of the OPA858IDSGR?
The gain bandwidth product (GBWP) of the OPA858IDSGR is 5.5 GHz.
- What is the typical bias current of the OPA858IDSGR?
The typical bias current of the OPA858IDSGR is 10 pA.
- What is the input voltage noise of the OPA858IDSGR?
The input voltage noise of the OPA858IDSGR is 2.5 nV/√Hz.
- What is the slew rate of the OPA858IDSGR?
The slew rate of the OPA858IDSGR is 2000 V/µs.
- What is the package type and pin count of the OPA858IDSGR?
The OPA858IDSGR is available in an 8-pin WSON (DSG) package.
- What is the operating temperature range of the OPA858IDSGR?
The operating temperature range of the OPA858IDSGR is –40°C to 125°C.
- What are some common applications of the OPA858IDSGR?
The OPA858IDSGR is commonly used in optical Time-of-Flight (ToF) systems, high-resolution LIDAR systems, and high-speed data acquisition systems.
- How does the OPA858IDSGR handle feedback network connections?
The OPA858IDSGR features a feedback pin (FB) that simplifies the feedback network connection between the input and the output.
- What is the supply voltage range for the OPA858IDSGR?
The supply voltage range for the OPA858IDSGR is 3.3 V to 5.25 V.
- Does the OPA858IDSGR support single-supply operation?
Yes, the OPA858IDSGR can be used with a single positive supply (negative supply at ground) without any change in performance, provided the input common-mode and output swing are biased within the linear operation of the device.
