Overview
The OPA657NB/3K is a Voltage Feedback Amplifier IC from Texas Instruments, designed specifically for instrumentation applications. This single-circuit amplifier, packaged in a SOT-23-5 case, offers high gain and low noise performance, making it suitable for various applications such as medical devices, industrial controls, and telecommunications equipment. The amplifier features a high slew rate of 700V/μs and a gain bandwidth product of 1.6 GHz, which are advantageous for high-frequency applications. Its low input bias current (1 pA) and offset voltage (100 μV) enhance its precision in instrumentation designs. Although the product has been discontinued, suitable alternatives are available.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Amplifier Type | Voltage Feedback | |
| Number of Circuits | 1 | |
| Slew Rate | 700 V/μs | V/μs |
| Gain Bandwidth Product | 1.6 GHz | GHz |
| -3db Bandwidth | 350 MHz | MHz |
| Current - Input Bias | 1 pA | pA |
| Voltage - Input Offset | 100 μV | μV |
| Current - Supply | 14 mA | mA |
| Current - Output / Channel | 70 mA | mA |
| Voltage - Supply Span (Min) | 8 V | V |
| Voltage - Supply Span (Max) | 12 V | V |
| Operating Temperature | -40°C to 85°C | °C |
| Package / Case | SC-74A, SOT-753 | |
| Mounting Type | Surface Mount |
Key Features
- Amplifier type: Voltage Feedback
- Number of circuits: 1
- Slew rate: 700 V/μs
- Gain bandwidth product: 1.6 GHz
- -3db bandwidth: 350 MHz
- Current - Input bias: 1 pA
- Voltage - Input offset: 100 μV
- Current - Supply: 14 mA
- Current - Output / Channel: 70 mA
- Voltage - Supply span (Min): 8 V
- Voltage - Supply span (Max): 12 V
- Operating temperature range: -40°C to 85°C
- Low input voltage noise: 4.8 nV/√Hz
- High output current: 70 mA
- Fast overdrive recovery
Applications
- Medical devices
- Industrial controls
- Telecommunications equipment
- Wideband photodiode amplifiers
- Wafer scanning equipment
- ADC input amplifiers
- Test and measurement front ends
- High gain precision amplifiers
- Optical Time Domain Reflectometry (OTDR)
Q & A
- What is the slew rate of the OPA657NB/3K amplifier?
The slew rate of the OPA657NB/3K amplifier is 700 V/μs.
- What is the gain bandwidth product of the OPA657NB/3K?
The gain bandwidth product of the OPA657NB/3K is 1.6 GHz.
- What is the input bias current of the OPA657NB/3K?
The input bias current of the OPA657NB/3K is 1 pA.
- What is the input offset voltage of the OPA657NB/3K?
The input offset voltage of the OPA657NB/3K is 100 μV.
- What is the operating temperature range of the OPA657NB/3K?
The operating temperature range of the OPA657NB/3K is -40°C to 85°C.
- What are the typical applications of the OPA657NB/3K?
The OPA657NB/3K is typically used in medical devices, industrial controls, telecommunications equipment, and other high-precision applications.
- Is the OPA657NB/3K still in production?
No, the OPA657NB/3K has been discontinued, but suitable alternatives are available.
- What is the package type of the OPA657NB/3K?
The OPA657NB/3K is packaged in a SOT-23-5 case.
- What is the supply voltage range for the OPA657NB/3K?
The supply voltage range for the OPA657NB/3K is from 8 V to 12 V.
- What is the output current per channel of the OPA657NB/3K?
The output current per channel of the OPA657NB/3K is 70 mA.
- What are the key DC specifications of the OPA657NB/3K?
The OPA657NB/3K features high open-loop gain, high common-mode rejection, high power-supply rejection, and trimmed input offset voltage, making it suitable for high DC precision applications.
