Texas Instruments THS4041CDR

Overview

THS4041CDR from Texas Instruments is a single-channel, voltage-feedback operational amplifier optimized for high-speed, unity-gain-stable operation with any capacitive load. It delivers 165 MHz bandwidth (CL = 0 pF), 400 V/µs slew rate, ±15 V supply capability, and drives 100 mA into 20 Ω - enabling use in video line drivers, ADC buffers, and high-fidelity signal conditioning circuits.

For engineers reviewing the THS4041CDR datasheet, THS4041CDR pinout, THS4041CDR application, or THS4041CDR equivalent, key selection criteria include capacitive-load stability up to 1000 pF, differential gain/phase error under 0.01% / 0.01° (NTSC), low THD (−89 dBc at 1 MHz, RL = 1 kΩ), and SOIC-8 package compatibility with standard PCB layouts.

Technical Context

The THS4041CDR employs a dielectrically isolated complementary bipolar process with GHz f_T transistors, enabling wide bandwidth and fast settling (120 ns to 0.1%). Its internal C-stable compensation dynamically adjusts phase margin in response to output capacitance, eliminating external compensation for loads up to 1000 pF.

This architecture supports both inverting and noninverting configurations at all gains while maintaining stability. The device features dedicated NULL pins (1 and 8) for input offset adjustment and operates across dual supplies from ±4.5 V to ±16.5 V or single supply from 9 V to 33 V.

Key Specifications

Pinout & Package

THS4041CDR is housed in an 8-pin SOIC (D) package with exposed thermal pad (PowerPAD™). This thermally enhanced plastic small-outline IC supports high-power dissipation (740 mW at TA = 25°C) and requires standard reflow soldering profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with THS4031CDR and THS4081CDR, the THS4041CDR uniquely balances 165 MHz bandwidth, 400 V/µs slew rate, and 100 mA output drive - making it the only option among the three capable of driving 1000 pF loads while maintaining broadcast-grade video linearity and fast settling in ±15 V systems.

Availability

THS4041CDR is available at Aetrix Electronics and suitable for video distribution systems, high-speed data acquisition front-ends, and test instrumentation requiring stable component supply across extended temperature and voltage ranges.

Supply support for THS4041CDR 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, embedded processing, and digital signal solutions for industrial, automotive, and communications markets.

The THS4041CDR belongs to TI's high-speed voltage-feedback op-amp product line, engineered specifically for applications demanding wide bandwidth, capacitive-load stability, and broadcast-grade video performance without external compensation.

FAQ

What is the maximum capacitive load the THS4041CDR can drive without external compensation?

The THS4041CDR is internally compensated to remain stable with capacitive loads up to 1000 pF in unity-gain configuration. Data sheet Figure 24 confirms <5% overshoot at 1000 pF with 1-V and 5-V steps under ±15 V and ±5 V supplies. For loads beyond 1000 pF or demanding ultra-low peaking, a 20-Ω series isolation resistor is recommended - but the THS4041CDR itself requires no external components to achieve stability across its full specified range.

Does the THS4041CDR support single-supply operation, and what is the minimum supply voltage?

Yes, the THS4041CDR supports true single-supply operation from 9 V to 33 V (VCC = V+ to GND). At 9 V, it maintains functional performance including 150 MHz bandwidth (VCC = ±5 V equivalent), 325 V/µs slew rate, and ±3.5 V output swing into 1 kΩ. The input common-mode range extends down to 3.8 V below V+, enabling DC-coupled signal handling in single-supply systems.

How does the THS4041CDR achieve unity-gain stability with any capacitive load?

The THS4041CDR uses patented C-stable architecture: an internal circuit senses output capacitance and dynamically adjusts the dominant pole compensation. Unlike fixed-compensation op-amps, this adaptive response maintains ≥45° phase margin across 0–1000 pF loads - verified by open-loop gain/phase plots (Figure 3) and capacitive-load step responses (Figures 50–57). No external components are needed for stability, though a 20-Ω series resistor may reduce peaking for marginal loads.

What are the thermal limitations of the THS4041CDR in SOIC-8 (D) package?

In the SOIC-8 (D) package, the THS4041CDR has θ_JA = 167°C/W (JEDEC Low-K board) and a maximum power dissipation of 740 mW at T_A = 25°C. Junction temperature must remain ≤150°C. At full ±15 V supply and 100 mA output, power dissipation reaches ~1.5 W - exceeding the SOIC-8 limit. Therefore, operation at maximum output current requires either derating above 25°C, heatsinking, or use of the thermally superior MSOP-8 PowerPAD™ (DGN) variant. Thermal shutdown is not integrated.

Can the THS4041CDR replace older high-speed op-amps like the THS3001 in existing designs?

The THS4041CDR is not a direct drop-in replacement for the THS3001 due to differing pinouts (THS3001 uses 8-pin SOIC but assigns NULL pins differently) and higher quiescent current (11 mA vs. THS3001's 7.5 mA). However, its superior capacitive-load stability, lower THD (−89 dBc vs. −72 dBc), and 0.01° differential phase make it a functional upgrade for video and precision applications - provided layout accommodates the THS4041CDR's NULL pin configuration and thermal management.