Texas Instruments THS3202DGN

Overview

THS3202DGN from Texas Instruments is a dual current-feedback amplifier (CFA) designed for high-frequency, low-distortion signal conditioning in demanding analog front-ends. It delivers 2 GHz unity-gain bandwidth, 9000 V/µs slew rate, ±115 mA output drive into 20 Ω, and operates from ±3.3 V to ±7.5 V (dual) or 6.6–15 V (single). It is used in RF/IF amplification, high-voltage ADC preamplification, and professional video line driving.

For engineers reviewing the THS3202DGN datasheet, THS3202DGN pinout, THS3202DGN application, or THS3202DGN equivalent, this page provides verified electrical specifications, thermal package data (MSOP-8 PowerPAD™), real-world distortion performance at 100 MHz+, differential gain/phase error for video, and validated alternatives for high-speed CFA replacement scenarios.

Technical Context

The THS3202DGN implements a BiCOM-II-based current-feedback architecture with low-impedance inverting input (11 Ω) and high-impedance noninverting input (780 kΩ), enabling wideband gain stability independent of feedback resistor value. Its transimpedance gain exceeds 300 kΩ at DC and remains >120 kΩ up to +85°C.

It features matched dual channels with –60 dB crosstalk at 100 MHz, differential gain error as low as 0.004% (NTSC, 150 Ω load), and differential phase error down to 0.006° - confirming suitability for broadcast-grade video signal routing without color fidelity loss.

Key Specifications

Pinout & Package

THS3202DGN uses an 8-pin MSOP package with exposed PowerPAD™ thermal pad on the underside, requiring connection to a PCB copper pour for thermal management. The PowerPAD reduces junction-to-board thermal resistance to 4.7 °C/W, enabling 685 mW continuous power dissipation at +85°C ambient.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-feedback amplifier applications.

Compared with THS3201DGN, THS3202DGN provides two matched channels in one package - reducing component count and inter-channel skew in differential or parallel signal paths. Compared with LMH6723MA/NOPB, THS3202DGN delivers 11% higher bandwidth, 80% higher slew rate, and 15% greater output current with integrated thermal management - making it the only viable option for >500 MHz video or IF applications.

Availability

THS3202DGN is available at Aetrix Electronics and suitable for RF/IF amplification, high-voltage ADC preamplification, and professional video line driving requiring stable component supply across industrial temperature range (–40°C to +85°C).

Supply support for THS3202DGN 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-speed amplifier design and manufacturing.

The THS3202DGN belongs to TI's THS320x family of current-feedback amplifiers engineered specifically for ultra-wideband, low-distortion signal conditioning in test & measurement, video, and communications infrastructure.

FAQ

What is the maximum operating supply voltage for THS3202DGN?

The THS3202DGN supports a maximum supply voltage of ±7.5 V in dual-supply mode or 15 V in single-supply mode, with absolute maximum ratings of ±8.25 V per rail (16.5 V total). Operation beyond these limits risks permanent damage. At ±7.5 V, the device achieves 1100 MHz small-signal bandwidth and 1000 MHz large-signal bandwidth - key for UHF IF amplification. Always observe the recommended operating conditions table in the SLOS242F datasheet.

Does THS3202DGN require external compensation for stability?

No, the THS3202DGN is internally compensated for unity-gain stability across its specified supply range. Its current-feedback architecture relies on feedback resistor selection (e.g., 402 Ω for G = +2) rather than capacitor-based compensation. Stability is maintained up to 2 GHz with proper PCB layout - including short traces to the inverting input, ground plane under the PowerPAD™, and local 0.1 µF supply decoupling. No external compensation components are needed for standard gain configurations.

How does the PowerPAD™ on THS3202DGN improve thermal performance compared to standard MSOP-8?

The PowerPAD™ on THS3202DGN reduces thermal resistance from junction to board (θJB) to 4.7 °C/W and junction to ambient (θJA) to 58.4 °C/W - significantly lower than the 54.2 °C/W θJA of the DGK variant. This allows THS3202DGN to dissipate 685 mW continuously at +85°C ambient, supporting full ±115 mA output drive without thermal throttling. Standard MSOP-8 packages lack this thermal path and cannot sustain equivalent output current at elevated temperatures.

Can THS3202DGN drive a 75 Ω video load while meeting SMPTE standards?

Yes, THS3202DGN is explicitly characterized for video applications: at G = +2 into 150 Ω (standard video test load), it achieves 0.004% differential gain error and 0.006° differential phase error - well within SMPTE 253M and ITU-R BT.601 limits. When driving 75 Ω directly, use series termination (e.g., 75 Ω resistor at output) to maintain impedance match and preserve these metrics. The 2 GHz bandwidth ensures flat response across the entire HD-SDI baseband (up to 1.485 GHz).

What is the input bias current specification for THS3202DGN at +85°C?

At +85°C, the THS3202DGN exhibits a maximum input bias current of ±85 µA at the inverting input and ±50 µA at the noninverting input (VCM = 0 V for dual supply). These values are confirmed in the "ELECTRICAL CHARACTERISTICS" table of the SLOS242F datasheet. Because the inverting input is low-impedance (11 Ω), bias current effects are negligible in most CFA configurations; however, noninverting input bias must be considered in high-impedance sensor interfaces or precision DC-coupled applications.