Overview
The OPA657NB/250, produced by Texas Instruments, is a high-performance, low-noise, FET-input operational amplifier. This device is designed to offer a very high dynamic range, making it suitable for applications requiring high precision and wideband performance. The OPA657 combines a high-gain bandwidth product of 1.6 GHz with a low-voltage noise JFET-input stage, making it ideal for driving high-precision analog-to-digital converters (ADCs) and wideband transimpedance applications, including photodiode circuits.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Gain Bandwidth Product | 1.6 GHz | - | - | GHz |
| Bandwidth (G = 10) | 275 MHz | - | - | MHz |
| Slew Rate (G = 10, 1-V Step) | 700 V/µs | - | - | V/µs |
| Input Offset Voltage | ±0.1 mV | ±0.6 mV | ±0.9 mV | mV |
| Input Offset Voltage Drift | ±2 µV/°C | ±6 µV/°C | ±6 µV/°C | µV/°C |
| Input Bias Current | ±1 pA | ±5 pA | ±1250 pA | pA |
| Supply Voltage Range | - | ±4 V to ±6 V | ±6 V | V |
| Operating Temperature Range | - | -40°C | 85°C | °C |
| Package Type | - | - | SOT-23-5 | - |
Key Features
- High-gain bandwidth product of 1.6 GHz and high bandwidth of 275 MHz (G = 10)
- Low-voltage noise JFET-input stage for high dynamic range
- High slew rate of 700 V/µs (G = 10, 1-V Step)
- Excellent DC accuracy due to high open-loop gain, high common-mode rejection, and high power-supply rejection
- Low input offset voltage and drift
- Low input bias current
- Wide operating temperature range from -40°C to 85°C
- Surface mount package (SOT-23-5)
Applications
- High-precision analog-to-digital converter (ADC) driving
- Wideband transimpedance applications
- Photodiode circuits
- High-speed data acquisition systems
- Medical imaging and diagnostic equipment
- High-frequency signal processing and amplification
Q & A
- What is the gain bandwidth product of the OPA657NB/250?
The gain bandwidth product of the OPA657NB/250 is 1.6 GHz.
- What is the typical bandwidth of the OPA657NB/250 at a gain of 10?
The typical bandwidth at a gain of 10 is 275 MHz.
- What is the slew rate of the OPA657NB/250?
The slew rate is 700 V/µs (G = 10, 1-V Step).
- What is the input offset voltage of the OPA657NB/250?
The input offset voltage is typically ±0.1 mV, with a maximum of ±0.9 mV over temperature.
- What is the operating temperature range of the OPA657NB/250?
The operating temperature range is from -40°C to 85°C.
- What package type is the OPA657NB/250 available in?
The OPA657NB/250 is available in a SOT-23-5 package.
- What are some typical applications of the OPA657NB/250?
Typical applications include high-precision ADC driving, wideband transimpedance applications, and photodiode circuits.
- What is the supply voltage range for the OPA657NB/250?
The supply voltage range is ±4 V to ±6 V.
- What is the input bias current of the OPA657NB/250?
The input bias current is typically ±1 pA, with a maximum of ±1250 pA over temperature.
- Is the OPA657NB/250 RoHS compliant?
