Overview
The OPA657NB/3KG4, produced by Texas Instruments, is a high-performance, 1.6-GHz, low-noise, FET-input operational amplifier. This device combines a high-gain bandwidth product with a low-voltage noise JFET-input stage, making it ideal for applications requiring high dynamic range and precision. The OPA657 is particularly suited for wideband photodiode amplification, ADC input amplification, test and measurement front ends, and high-gain precision amplification. It is built using a very high-speed complementary bipolar process, ensuring excellent DC accuracy and high input impedance.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Gain Bandwidth Product | 1.6 GHz | |
| Bandwidth (G = 10) | 275 MHz | |
| Slew Rate (G = 10, 1-V Step) | 700 V/µs | |
| Input Offset Voltage | ±0.25 mV | |
| Input Bias Current | 2 pA | |
| Input Voltage Noise | 4.8 nV/√Hz | |
| Output Current | 70 mA | |
| Operating Temperature Range | –40°C to 85°C | |
| Supply Voltage Range | ±4 V to ±6 V | |
| Quiescent Current | 11.7 mA to 16.2 mA |
Key Features
- High Gain Bandwidth Product: 1.6 GHz
- High Bandwidth: 275 MHz (G = 10)
- Low Input Offset Voltage: ±0.25 mV
- Low Input Bias Current: 2 pA
- Low Input Voltage Noise: 4.8 nV/√Hz
- High Output Current: 70 mA
- Fast Overdrive Recovery
- Available in High Grade With Improved DC Specifications
- Internal ESD Protection Diodes
- Support for Both Split-Supply and Single-Supply Operation
Applications
- Wideband Photodiode Amplifier
- Wafer Scanning Equipment
- ADC Input Amplifier
- Test and Measurement Front End
- High Gain Precision Amplifier
- Optical Time Domain Reflectometry (OTDR)
Q & A
- What is the gain bandwidth product of the OPA657NB/3KG4?
The gain bandwidth product of the OPA657NB/3KG4 is 1.6 GHz.
- What is the typical bandwidth of the OPA657NB/3KG4 when the gain is set to 10?
The typical bandwidth is 275 MHz when the gain is set to 10.
- What is the slew rate of the OPA657NB/3KG4 for a 1-V step input?
The slew rate is 700 V/µs for a 1-V step input.
- What is the input offset voltage of the OPA657NB/3KG4?
The input offset voltage is typically ±0.25 mV.
- What is the input bias current of the OPA657NB/3KG4?
The input bias current is 2 pA.
- What is the input voltage noise of the OPA657NB/3KG4?
The input voltage noise is 4.8 nV/√Hz.
- What is the maximum output current of the OPA657NB/3KG4?
The maximum output current is 70 mA.
- What is the operating temperature range of the OPA657NB/3KG4?
The operating temperature range is –40°C to 85°C.
- Can the OPA657NB/3KG4 be used in both split-supply and single-supply configurations?
Yes, the OPA657NB/3KG4 can be used in both split-supply and single-supply configurations.
- What are some common applications of the OPA657NB/3KG4?
Common applications include wideband photodiode amplification, wafer scanning equipment, ADC input amplification, test and measurement front ends, and high-gain precision amplification.
