Texas Instruments THS3202D

Overview

THS3202D 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 supplies (or 6.6–15 V single supply). It is widely deployed as a high-voltage ADC preamplifier and RF/IF amplifier stage.

For engineers reviewing the THS3202D datasheet, THS3202D pinout, THS3202D application, or THS3202D equivalent, key selection criteria include large-signal bandwidth at 4 V_PP (875 MHz @ ±5 V), differential gain error (0.008% NTSC), crosstalk (–60 dB @ 100 MHz), and thermal management requirements for the SOIC-8 PowerPAD package.

Technical Context

The THS3202D implements a current-feedback architecture with high-impedance noninverting input (780 kΩ) and low-impedance inverting input (11 Ω), enabling stable wideband gain configurations without sacrificing phase margin. Its transimpedance gain (≥120 kΩ over temperature) directly determines closed-loop bandwidth via feedback resistor selection.

It features matched dual channels with <0.03° differential phase error and <0.008% differential gain error-critical for professional video line driving-and supports rail-to-rail output swing (±3.4 V into 100 Ω @ ±5 V) while maintaining <–64 dBc harmonic distortion at 16 MHz.

Key Specifications

Pinout & Package

THS3202D is housed in an 8-pin SOIC package (D suffix) with exposed thermal pad (PowerPAD™) requiring PCB copper connection for thermal integrity. The package supports surface-mount reflow and meets JEDEC MS-012 standards.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-speed amplifier applications.

Compared with THS3202D, THS3202DGN offers superior thermal management in a smaller footprint but requires different PCB land pattern, while THS3122 trades bandwidth for raw current drive-making it unsuitable as a drop-in replacement for video or RF IF stages.

Availability

THS3202D is available at Aetrix Electronics and suitable for high-speed signal processing, test and measurement systems, and professional video equipment requiring stable component supply across extended temperature ranges (–40°C to +85°C).

Supply support for THS3202D 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 data converters.

The THS3202D belongs to TI's THS320x family of current-feedback amplifiers, engineered specifically for low-distortion, high-output-drive applications in video, communications, and instrumentation signal chains.

FAQ

What is the maximum operating supply voltage for the THS3202D?

The THS3202D supports a maximum dual-supply voltage of ±7.5 V (15 V total) and a maximum single-supply voltage of 15 V. Absolute maximum ratings specify ±16.5 V on VS+, but operation beyond ±7.5 V risks exceeding specified AC performance and thermal limits. Always observe recommended operating conditions in the datasheet to ensure THS3202D reliability and distortion performance.

Does the THS3202D require external compensation components?

No, the THS3202D is internally compensated for unity-gain stability and does not require external compensation capacitors. Its current-feedback architecture achieves stable operation with standard resistive feedback networks (e.g., 402 Ω for G = +2). However, proper PCB layout-especially short, low-inductance traces to the inverting input and grounded thermal pad-is critical to prevent peaking or oscillation at high frequencies.

Can the THS3202D drive a 50 Ω load effectively?

Yes-the THS3202D delivers ±115 mA into 20 Ω and maintains ±3.2 V output swing into 100 Ω at +85°C. When driving 50 Ω, it sustains >±2.5 V output with <–64 dBc distortion at 16 MHz. For optimal 50 Ω matching, use series termination at the output and ensure controlled-impedance PCB routing to avoid reflections that degrade THS3202D large-signal bandwidth.

How does the PowerPAD™ thermal pad affect THS3202D PCB layout?

THS3202D's exposed thermal pad must be soldered to a solid copper pour connected to internal/external ground planes via ≥4 thermal vias (0.3 mm diameter). Failure to do so raises junction temperature beyond +125°C, increasing distortion and reducing long-term reliability. The SOIC-8 PowerPAD™ variant (D) has θ_JA = 97.5°C/W; omitting thermal vias can double junction temperature rise under full load.

Is the THS3202D pin-compatible with other devices in the THS320x family?

Yes-THS3202D shares identical pinout with THS3202DGK (MSOP-8) and THS3202DGN (MSOP-8 PowerPAD™) across all eight pins. Pin functions (1VIN+, 1VIN−, 1VOUT, VS−, VS+, 2VIN−, 2VIN+, 2VOUT) are fully aligned. However, package dimensions, thermal characteristics, and soldering profiles differ, so mechanical and thermal validation is required before substitution.