Texas Instruments THS4041CDGN

Overview

THS4041CDGN from Texas Instruments is a single-channel, high-speed voltage-feedback operational amplifier optimized for driving capacitive loads up to 1000 pF while maintaining stability. It delivers 165 MHz bandwidth (−3 dB, CL = 0 pF), 400 V/µs slew rate, ±15 V supply operation, and drives 100 mA into 20 Ω - making it suitable for video line driving, ADC buffering, and high-fidelity signal conditioning.

For engineers reviewing the THS4041CDGN datasheet, THS4041CDGN pinout, THS4041CDGN application, or THS4041CDGN equivalent, this page provides verified package mapping (8-pin MSOP-PowerPAD), confirmed unity-gain stability across inverting/noninverting configurations, differential gain/phase error specs for NTSC/PAL video, and real-world capacitive load response data up to 1 µF.

Technical Context

The THS4041CDGN uses a dielectrically isolated complementary bipolar process enabling GHz f_T transistors, delivering wide bandwidth and low distortion. Its internal C-stable compensation dynamically adjusts pole placement based on sensed capacitive load, preserving phase margin without external components.

This architecture supports stable operation at unity gain with any capacitive load, including 1000 pF and 0.1 µF, while maintaining ≤0.01% differential gain error and ≤0.02° differential phase error under NTSC conditions at ±5 V and ±15 V supplies.

Key Specifications

Pinout & Package

THS4041CDGN is housed in an 8-pin MSOP package with PowerPAD™ thermal enhancement (exposed die pad soldered to PCB ground plane). The DGN suffix explicitly denotes this thermally optimized variant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed op-amp applications.

Compared with THS4031CDGN and THS4081CDGN, the THS4041CDGN uniquely balances ultra-high slew rate (400 V/µs) with proven C-stable capacitive-load tolerance - enabling direct drive of long video lines or ADC inputs without stability compromises or layout redesign.

Availability

THS4041CDGN is available at Aetrix Electronics and suitable for video distribution systems, high-speed data acquisition modules, and medical imaging front-ends requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for THS4041CDGN 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 precision signal chain solutions.

The THS4041CDGN belongs to TI's C-stable high-speed op-amp product line, engineered specifically for applications demanding unconditional stability into reactive loads - such as broadcast video, test instrumentation, and medical ultrasound signal paths.

FAQ

What is the maximum capacitive load the THS4041CDGN can drive while remaining stable?

The THS4041CDGN is specified for unconditional stability with capacitive loads from 0 pF up to 1000 pF (1 nF) and remains functional with 0.1 µF loads, though minor peaking may occur. Its internal C-stable compensation actively adjusts dominant-pole location in response to load capacitance, eliminating need for external isolation resistors in most video and data-acquisition designs. This behavior is validated across ±5 V and ±15 V supplies.

Does the THS4041CDGN require external components for offset nulling?

Yes - the THS4041CDGN provides dedicated NULL pins (1 and 8) for external offset nulling. A 10-kΩ potentiometer is connected between pins 1 and 8, with its wiper tied to VCC−, allowing precise adjustment of input offset voltage down to sub-millivolt levels. This feature is unique to the THS4041 (single-channel) and not present in the dual THS4042; it supports calibration-critical applications like precision test equipment where V_OS drift must be minimized.

What is the thermal performance advantage of the DGN package used in THS4041CDGN?

The DGN package incorporates TI's PowerPAD™ - an exposed thermal pad soldered directly to a large PCB copper area - achieving θ_JA = 58.4°C/W and θ_JC = 4.7°C/W. This allows THS4041CDGN to dissipate 2.14 W at T_A = 25°C, nearly triple the 740 mW capability of the standard SOIC (D) package. In practice, this enables sustained 100-mA output current into low-impedance loads without thermal shutdown, critical for video line drivers and high-current ADC buffers.

How does the THS4041CDGN perform in NTSC video applications compared to standard op-amps?

The THS4041CDGN delivers 0.01% differential gain error and 0.01° differential phase error under NTSC conditions at ±15 V supply - meeting or exceeding broadcast-grade requirements. Unlike general-purpose op-amps that require external peaking or de-emphasis networks, THS4041CDGN achieves this performance natively due to its optimized internal compensation and low-distortion bipolar process. Its 165-MHz bandwidth also preserves luminance detail beyond 5 MHz, supporting full-resolution analog video distribution.

Can the THS4041CDGN operate from a single supply?

Yes - the THS4041CDGN supports single-supply operation from 9 V to 33 V (V_CC = V_CC+ − V_CC−). When operated single-ended, its common-mode input voltage range extends from (V_CC− + 3.8 V) to (V_CC+ − 3.8 V) at ±5 V equivalent, and output swing reaches ±3.5 V into 1 kΩ. Designers must ensure proper biasing of IN+ and IN− within this range and use rail-to-rail compatible downstream stages if full-scale swing is required.