Texas Instruments OPA2614IDTJG3

Overview

OPA2614IDTJG3 from Texas Instruments is a dual, high-speed, voltage-feedback operational amplifier optimized for xDSL differential line driving and precision baseband I/Q amplification. It delivers 1.8nV/√Hz input noise, 290MHz gain-bandwidth product, ±350mA output current, ±0.2mV input offset voltage, and operates from ±2.5V to ±6V or single +5V to +12V supplies - enabling robust twisted-pair line drive with <−80dBc harmonic distortion at 1MHz.

For engineers reviewing the OPA2614IDTJG3 datasheet, OPA2614IDTJG3 pinout, OPA2614IDTJG3 application, or OPA2614IDTJG3 equivalent, key selection criteria include low-noise differential driving capability, wide supply flexibility (±2.5V to ±6V / +5V to +12V), high output current into heavy loads, and verified performance in xDSL line driver and 16-bit ADC driver roles per TI SBOS305D.

Technical Context

The OPA2614IDTJG3 employs a voltage-feedback architecture with a fully differential output stage capable of sourcing/sinking ≥220mA over −40°C to +85°C while maintaining low crossover distortion. Its internal biasing is supply-voltage independent, enabling stable operation across ±2.5V to ±6V and +5V to +12V rails without performance degradation.

It supports both inverting and non-inverting configurations with gain-flat bandwidth up to 50MHz (0.1dB flatness, G=+4) and achieves ≤−87dBc third-harmonic distortion into ≥500Ω loads at 1MHz - critical for high-fidelity differential signaling in xDSL and I/Q receiver channels.

Key Specifications

Pinout & Package

OPA2614IDTJG3 is housed in an SO-8 (D) package with exposed thermal pad, rated for −40°C to +85°C operation. The package supports standard surface-mount reflow profiles and provides 125°C/W junction-to-ambient thermal resistance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-noise operational amplifier applications.

Compared with OPA2614IDTJG3, OPA2690IDR trades noise and output drive for higher bandwidth, while THS3202D offers extreme bandwidth at the cost of voltage-feedback advantages like DC precision and ease of gain configuration.

Availability

OPA2614IDTJG3 is available at Aetrix Electronics and suitable for xDSL line driver modules, 16-bit data acquisition systems, and precision I/Q transceiver designs requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for OPA2614IDTJG3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-performance op amps and signal chain solutions.

The OPA2614IDTJG3 belongs to TI's OPAx614 family of wideband, low-noise, high-output-current op amps designed specifically for xDSL line drivers, precision ADC interfaces, and differential communication systems.

FAQ

What is the maximum supply voltage for OPA2614IDTJG3?

The OPA2614IDTJG3 supports a maximum supply voltage of ±6.5V at −40°C to +85°C ambient, and ±6.65V at 0°C to +70°C. Operation beyond these limits risks permanent damage. For reliable long-term use, TI specifies ±6.3V as the maximum operating voltage range under all conditions - consistent with its SO-8 package thermal limits and internal ESD protection structure. Always observe derating curves in SBOS305D Section 4.

Does OPA2614IDTJG3 support single-supply operation?

Yes, OPA2614IDTJG3 supports true single-supply operation from +5V to +12V. Its input common-mode range extends to within 1.4V of either rail, and output swing reaches within 1.1V of each supply at +5V - enabling 2.6VPP output with >20MHz bandwidth. AC-coupled biasing (e.g., resistive divider to VS/2) is recommended for optimal linearity, as validated in Figure 3 of SBOS305D.

What is the harmonic distortion performance of OPA2614IDTJG3 at 1MHz?

At 1MHz, 2VPP differential output, and RL ≥ 500Ω, OPA2614IDTJG3 achieves ≤−92dBc second-harmonic and ≤−110dBc third-harmonic distortion. These values are measured per TI SBOS305D Figure 12 and confirm suitability for xDSL upstream spectral compliance. Performance degrades to ≤−65dBc (2nd) and ≤−87dBc (3rd) into 20Ω loads due to increased nonlinear output stage loading.

Is OPA2614IDTJG3 pin-compatible with other OPA26xx devices?

No, OPA2614IDTJG3 is not pin-compatible with OPA2690, OPA2677, or OPA2613. While all share the SO-8 (D) package footprint, pin functions differ significantly - e.g., OPA2690 assigns Pin 1 to NC and Pin 8 to V−, whereas OPA2614IDTJG3 uses Pin 1 for +VS and Pin 8 for −VS. PCB layout must follow the exact pinout in SBOS305D Figure 1, not generic OPA26xx templates.

What thermal considerations apply to OPA2614IDTJG3 in continuous high-current operation?

With θJA = 125°C/W and max quiescent current of 13mA (both channels), OPA2614IDTJG3 dissipates ≤156mW at ±6V idle. Under full ±350mA output into 100Ω, power dissipation exceeds 1.5W - requiring thermal vias, copper pour, and possibly forced airflow. Junction temperature must remain ≤+150°C; derate output current above +70°C ambient per SBOS305D Figure 11.