Texas Instruments THS6212IRHFR

Overview

THS6212IRHFR from Texas Instruments is a differential current-feedback line driver amplifier designed for broadband power-line communications (PLC) systems. It delivers >665mA output current into 25Ω, 49VPP output swing into 100Ω at 28V supply, and –86dBc HD2 / –101dBc HD3 at 1MHz - enabling high-fidelity transmission up to 30MHz in G3-PLC and PRIME-compliant infrastructure.

For engineers reviewing the THS6212IRHFR datasheet, THS6212IRHFR pinout, THS6212IRHFR application, or THS6212IRHFR equivalent, key selection criteria include its adjustable bias modes (full/mid/low/shutdown), IADJ-controlled quiescent current tuning, 205MHz small-signal bandwidth at G_DIF=10V/V, thermal protection at 175°C, and VQFN-24 package with exposed thermal pad for high-power line-driving reliability.

Technical Context

The THS6212IRHFR employs a dual-channel current-feedback architecture with independent noninverting (D1_IN+, D2_IN+) and inverting (D1_FB, D2_FB) inputs per amplifier, supporting fully differential closed-loop gains from 5–20V/V via external feedback resistors. Its transimpedance open-loop gain reaches 1500kΩ at 28V supply, enabling stable high-speed operation with minimal phase margin degradation across bias modes.

Bias control uses two digital inputs (BIAS-1 LSB, BIAS-2 MSB) to select full/mid/low-power or shutdown states, while the analog IADJ pin allows fine-grained quiescent current adjustment down to sub-mA levels. PSRR exceeds 55dB at 1MHz, and common-mode input range extends to ±10V with 65dB CMRR, ensuring robustness against PLC channel noise and ground shifts.

Key Specifications

Pinout & Package

The THS6212IRHFR is housed in a 24-pin VQFN package (RHF) measuring 5mm × 4mm with an exposed thermal pad on the underside for enhanced thermal dissipation. The package requires soldering the thermal pad to a PCB copper plane to maintain junction temperature ≤125°C under continuous 665mA drive.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar differential broadband line driver applications.

Compared with THS6212IRHFR, THS6222IRHFT offers integrated common-mode buffering at the cost of slightly higher quiescent current, while LMH6882EVM provides a ready-to-test platform but no standalone device replacement. THS6212IRHFR remains optimal for cost-sensitive, space-constrained PLC modems requiring maximum flexibility in bias and feedback configuration.

Availability

THS6212IRHFR is available at Aetrix Electronics and suitable for smart grid metering, G3-PLC base stations, PRIME-compliant repeaters, and industrial IoT power-line gateways requiring stable component supply across extended product lifecycles.

Supply support for THS6212IRHFR 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 amplifiers and PLC solutions.

The THS6212IRHFR belongs to TI's high-speed line driver portfolio, engineered specifically for broadband power-line communications infrastructure - balancing high output power, ultra-low distortion, and adaptive power management for utility-grade reliability.

FAQ

What is the maximum differential output voltage swing supported by the THS6212IRHFR?

The THS6212IRHFR delivers up to 49VPP differential output swing into a 100Ω load when operated at 28V supply voltage. This specification is measured under full-bias conditions with a 28V single supply and enables compliance with G3-PLC Class A line power requirements of 14.5dBm. Output swing scales linearly with supply voltage, yielding ±24.5V (49VPP) across the load terminals.

How does the IADJ pin function in the THS6212IRHFR?

The IADJ pin on the THS6212IRHFR is an analog current-sink terminal that allows continuous adjustment of quiescent current below the discrete full/mid/low-bias settings. By connecting an external resistor (RADJ) between IADJ and VS−, designers can tune total I_Q from ~11.9mA down to sub-mA levels - enabling precise power optimization for varying line lengths and data rates without changing bias control logic states.

Can the THS6212IRHFR operate from a single 12V supply?

Yes, the THS6212IRHFR supports operation from a single 12V supply, with guaranteed performance across the recommended 10V–28V range. At 12V, it achieves 180MHz small-signal bandwidth (G_DIF=10V/V), 195MHz large-signal bandwidth (16VPP), and maintains –80dBc HD2 / –90dBc HD3 at 1MHz - making it suitable for compact, low-voltage PLC modems where 28V rails are impractical.

What thermal management is required for the THS6212IRHFR in high-current operation?

The THS6212IRHFR requires connection of its exposed thermal pad to a dedicated PCB copper pour for effective heat dissipation. With R_θJA = 42.3°C/W, sustained 665mA output into 25Ω at 28V generates ~3.5W of power dissipation; proper thermal pad soldering reduces junction-to-board resistance to 20.9°C/W, preventing exceedance of the 125°C max operating junction temperature. Thermal shutdown activates at 175°C as a safety backup.

Is the THS6212IRHFR pin-compatible with any other Texas Instruments line drivers?

The THS6212IRHFR shares the same 24-pin VQFN (RHF) package and pinout with the THS6222IRHFT, differing only in internal common-mode buffer integration. This allows direct PCB reuse when upgrading from THS6212IRHFR to THS6222IRHFT in designs requiring simplified common-mode control - though THS6222IRHFT draws slightly higher quiescent current (25mA vs 23mA full-bias) and has marginally reduced bandwidth (190MHz).