Texas Instruments OPA2675 Current Feedback Amplifier
Texas Instruments OPA2675 Current Feedback Amplifier provides the low distortion and high output current required for power-line modem driver and test and measurement applications. The OPA2675 operates on power supplies ranging from 4.5V to 13V. The device consumes a low 16.5mA/channel quiescent current to deliver a very high 1000mA output current. The OPA2675 can support the most demanding power-line modem requirements with 850mA assured minimum output current drive (at 25°C).
Power control features are included to minimize system power consumption. Two logic control lines allow for four quiescent power settings: full power, 75% bias power, 50% bias power, and offline mode with active offline control to present a high impedance with large signals present at the output pin. The two channels of Texas Instruments OPA2675 can be configured as a differential-input to differential-output, high current line driver, or used independently as individual op amps.
Features
- 340MHz (G = 4V/V) wideband operation
- 730MHz (G = 1V/V) unity-gain stable
- ±1000mA high output current
- Active offline mode for TDMA
- Adjustable power modes
- Full-bias mode: 16.5mA/channel
- 75% bias mode: 12.5mA/channel
- 50% bias mode: 8.5mA/channel
- Offline mode: 2.4mA/channel
- ±2.5V to ±6.5V bipolar-supply range
- 4.5V to 13V single-supply range
- 3500V/µs high slew rate
- Overtemperature protection circuit
- Output current limit (±1.3A)
Applications
- Power-line modems
- Matched I/Q channel amplifiers
- Broadband video line drivers
- ARB line drivers
- High-cap load drivers
- Ultrasonic-Piezo drivers
Functional Block Diagram
Related Development Tool
Texas Instruments DEM-OPA-RGV-EVM Evaluation Module
Facilitates an evaluation of the dual, wideband operational amplifiers in a VQFN (RGV) package.
Published: 2022-10-24
| Updated: 2022-11-04