EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts   Audio & Video  Video Processing & Display    OPA691ID
OPA691ID

TIOPA691ID

Texas Instruments
Similar TI current-feedback wideband amplifier suitable for high-speed buffering and video applications.
Active38,250 in stock
Datasheet Digi-Key Compare Prices

Overview

The OPA691ID is a single-channel, current-feedback operational amplifier designed for high-speed applications. It offers a wide -3dB bandwidth of 280 MHz and a high slew rate of 2100 V/us, making it suitable for buffering and signal amplification in demanding video and communication systems. This amplifier operates from a dual supply voltage range of +/-2.5V to +/-6.5V.

Why Choose This Part

Engineers choose the OPA691ID for its combination of high bandwidth, fast slew rate, and low power consumption (5.1mA supply current). Its current-feedback architecture provides consistent bandwidth across various gains, simplifying design for high-speed systems. The wide operating temperature range of -40C to 85C ensures reliable performance in industrial and demanding environments.

Applications

XDSL Line Drivers
Provides high-speed signal integrity and buffering for XDSL communication lines, ensuring reliable data transmission over long distances.
Broadband Video Buffers
Ideal for buffering high-frequency video signals, maintaining signal quality and preventing degradation in video distribution systems.
High-Speed Imaging Channels
Suitable for amplifying and processing signals in high-resolution imaging systems, where speed and accuracy are critical.
ADC Buffers
Buffers analog-to-digital converter inputs, providing a stable, low-impedance source to improve ADC performance and reduce loading effects.
Active Filters
Enables the design of high-frequency active filters, offering excellent linearity and wide bandwidth for signal conditioning.
High SFDR IF Amplifier
Serves as an intermediate frequency (IF) amplifier with high spurious-free dynamic range (SFDR), important for applications requiring high signal purity.

Key Specifications

Slew Rate 2100V/us
Mounting Type Surface Mount
-3db Bandwidth 280 MHz
Amplifier Type Current Feedback
Package / Case 8-SOIC (0.154", 3.90mm Width)
Current - Supply 5.1mA
Number of Circuits 1
Current - Input Bias 15 uA
Operating Temperature -40degC ~ 85degC
Gain Bandwidth Product 2 GHz
Voltage - Input Offset 500 uV
Supplier Device Package 8-SOIC
Current - Output / Channel 190 mA
Voltage - Supply Span (Max) 12 V
Voltage - Supply Span (Min) 5 V

Getting Started

To get started with the OPA691ID, designers can use standard op-amp design techniques. Texas Instruments provides detailed datasheets with recommended circuit configurations, including gain setting and compensation networks. Simulation tools like TINA-TI can be used for circuit validation and performance analysis before hardware implementation.

Also Consider

AD8065ARZ ADIAnalog Devices Inc. - This is a low-cost, high-performance voltage feedback amplifier with a wide bandwidth, suitable for general-purpose high-speed buffering.

Categories

Audio & Video > Video Processing & Display
The 2026 Embedded Online Conference