Overview
The OPA355NA/250, part of the OPA355 series from Texas Instruments, is a high-speed, voltage-feedback CMOS operational amplifier. This amplifier is designed for applications requiring wide bandwidth, such as video processing, ultrasound, and optical networking. The OPA355 series is unity-gain stable and features a digital shutdown function, which allows for power saving during idle periods and places the output in a high-impedance state to support output multiplexing. The amplifiers are available in single, dual, and triple configurations, making them versatile for various circuit designs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Unity-Gain Bandwidth | - | 450 | - | MHz |
| Gain-Bandwidth Product (GBW) | - | 200 | - | MHz |
| Input Noise Voltage | - | 5.8 | - | nV/√Hz |
| Differential Gain Error (NTSC) | - | 0.02% | - | % |
| Differential Phase Error (NTSC) | - | 0.05° | - | ° |
| Input Bias Current | - | 3 | - | pA |
| Shutdown Current (per amplifier) | 3.4 | - | 6 | µA |
| Enable Time | - | 100 | - | ns |
| Disable Time | - | 30 | - | ns |
| Operating Voltage Range | 2.5 | - | 5.5 | V |
| Quiescent Current (per amplifier) | 8.3 | - | 11 | mA |
| Continuous Output Current | - | ±60 | - | mA |
| Peak Output Current | - | ±100 | - | mA |
| Temperature Range | -40 | - | 125 | °C |
Key Features
- High-speed operation with a 200-MHz gain-bandwidth product and 360 V/µs slew rate.
- Unity-gain stable and can drive large output currents.
- Digital shutdown (enable) function for power saving and output multiplexing.
- Low input bias current of 3 pA.
- Low shutdown current of 3.4 µA.
- Excellent video performance with differential gain error of 0.02% and differential phase error of 0.05°.
- Rail-to-rail output swing within 100 mV of the rails.
- Input range includes ground, suitable for single-supply applications up to 5.5 V.
- Available in single (SOT-23-6 and SO-8), dual (VSSOP-10), and triple (TSSOP-14 and SO-14) packages.
- Thermal shutdown protection.
Applications
- Video processing.
- Ultrasound.
- Optical networking and tunable lasers.
- Photodiode transimpedance amplifiers.
- Active filters.
- High-speed integrators.
- Analog-to-Digital Converter (ADC) input buffers.
- Digital-to-Analog Converter (DAC) output amplifiers.
- Barcode scanners.
- Communications.
Q & A
- What is the unity-gain bandwidth of the OPA355?
The unity-gain bandwidth of the OPA355 is 450 MHz.
- What is the gain-bandwidth product (GBW) of the OPA355?
The gain-bandwidth product (GBW) of the OPA355 is 200 MHz.
- What is the input noise voltage of the OPA355?
The input noise voltage of the OPA355 is 5.8 nV/√Hz.
- What is the differential gain error of the OPA355 for NTSC signals?
The differential gain error of the OPA355 for NTSC signals is 0.02%.
- What is the differential phase error of the OPA355 for NTSC signals?
The differential phase error of the OPA355 for NTSC signals is 0.05°.
- What is the input bias current of the OPA355?
The input bias current of the OPA355 is 3 pA.
- What is the shutdown current of the OPA355?
The shutdown current of the OPA355 is 3.4 µA.
- What are the enable and disable times of the OPA355?
The enable time is 100 ns, and the disable time is 30 ns.
- What is the operating voltage range of the OPA355?
The operating voltage range of the OPA355 is from 2.5 V to 5.5 V.
- What are some typical applications of the OPA355?
The OPA355 is typically used in video processing, ultrasound, optical networking, photodiode transimpedance amplifiers, active filters, high-speed integrators, ADC input buffers, DAC output amplifiers, barcode scanners, and communications.
