Overview
The OPA656UBG4, produced by Texas Instruments, is a high-performance, wideband, unity-gain stable, FET-input operational amplifier. This device combines a voltage-feedback operational amplifier with a low-noise junction gate field-effect transistor (JFET) input stage, offering an ultra-high dynamic-range amplifier suitable for transimpedance applications and high-speed data acquisition front-ends. The OPA656UBG4 is designed to provide excellent precision and low noise, making it ideal for various high-speed and precision applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Gain-Bandwidth Product | - | 230 | - | MHz |
| Unity-Gain Bandwidth | - | 550 | - | MHz |
| Large-Signal Bandwidth (2VPP) | - | 150 | - | MHz |
| Input Offset Voltage | ±0.1 | ±0.6 | ±0.9 | mV |
| Input Offset Voltage Drift | ±2 | ±6 | - | µV/°C |
| Input Voltage Noise | - | 6 | - | nV/√Hz |
| Input Bias Current | ±2 | ±20 | ±1250 | pA |
| Supply Range | 8 | - | 12 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | SOT-23 | - | - |
Key Features
- Wide Bandwidth: Gain-bandwidth product of 230MHz, unity-gain bandwidth of 550MHz, and large-signal bandwidth of 150MHz.
- High Precision: Low input offset voltage (±0.6mV maximum) and low input offset voltage drift (±6µV/°C maximum).
- Low Noise: Input voltage noise of 6nV/√Hz.
- Low Distortion: High linearity with HD2 and HD3 at 5MHz of –80dBc and –100dBc, respectively.
- High Input Impedance: Suitable for applications requiring high input impedance.
- ESD Protection: Internal ESD protection diodes to the power supplies.
- Supply Range: Operates over a supply range of 8V to 12V.
Applications
- High-Speed Data Acquisition (DAQ): Ideal for high-speed digitizer front-ends.
- Medical and Chemical Analyzers: Used in medical and scientific instrumentation.
- Active Probes: Suitable for active probes and other test and measurement front-ends.
- Oscilloscopes: Used in oscilloscope applications.
- Optical Communication Modules: Excellent for optical test and communication equipment.
- Test and Measurement Front-ends: Used in various test and measurement applications.
- Optical Time-Domain Reflectometry (OTDR): Suitable for OTDR applications.
Q & A
- What is the gain-bandwidth product of the OPA656UBG4?
The gain-bandwidth product of the OPA656UBG4 is 230MHz.
- What is the unity-gain bandwidth of the OPA656UBG4?
The unity-gain bandwidth of the OPA656UBG4 is 550MHz.
- What is the input offset voltage of the OPA656UBG4?
The input offset voltage of the OPA656UBG4 is ±0.6mV maximum.
- What is the input voltage noise of the OPA656UBG4?
The input voltage noise of the OPA656UBG4 is 6nV/√Hz.
- What is the supply range of the OPA656UBG4?
The OPA656UBG4 operates over a supply range of 8V to 12V.
- What are the typical applications of the OPA656UBG4?
The OPA656UBG4 is used in high-speed data acquisition, medical and chemical analyzers, active probes, oscilloscopes, optical communication modules, test and measurement front-ends, and optical time-domain reflectometry (OTDR).
- What is the operating temperature range of the OPA656UBG4?
The operating temperature range of the OPA656UBG4 is –40°C to +85°C.
- Does the OPA656UBG4 have ESD protection?
Yes, the OPA656UBG4 has internal ESD protection diodes to the power supplies.
- What package types are available for the OPA656UBG4?
The OPA656UBG4 is available in the SOT-23 package type.
- What is the input bias current of the OPA656UBG4?
The input bias current of the OPA656UBG4 is ±20pA maximum.
