Texas Instruments THS3001CDG4

Overview

THS3001CDG4 from Texas Instruments is a high-speed current-feedback operational amplifier designed for large-signal, wideband analog signal conditioning. It delivers 420MHz small-signal bandwidth (G = 1, –3dB), 6500V/μs slew rate at ±15V supplies, and 40ns settling time to 0.1%, enabling precise transient response in video line drivers and base station IF buffers.

For engineers reviewing the THS3001CDG4 datasheet, THS3001CDG4 pinout, THS3001CDG4 application, or THS3001CDG4 equivalent, key selection criteria include its current-feedback architecture's gain-independent bandwidth control, low 3mV max input offset voltage, –96dBc THD at 1MHz, ±4.5V to ±16V dual-supply operation, and SOIC-8 package compatibility with high-density PCB layouts.

Technical Context

The THS3001CDG4 implements a dielectrically isolated complementary bipolar (HVBiCOM) process with GHz f_T transistors, forming a true current-feedback topology where bandwidth is set primarily by feedback resistor value-not gain-enabling stable high-frequency operation across G = 1 to G = 5 configurations. Its transresistance-based internal architecture yields open-loop transimpedance of 2.4MΩ at ±15V.

Unlike voltage-feedback amplifiers, the THS3001CDG4 maintains consistent phase margin when adjusting gain via the gain-setting resistor alone, while feedback resistor selection (e.g., 680Ω for G = 2 at ±15V) directly governs bandwidth and distortion trade-offs-critical for optimizing video differential gain (0.01%) and phase (0.02°) performance.

Key Specifications

Pinout & Package

THS3001CDG4 is packaged in an 8-pin SOIC (D package), 4.9mm × 6mm body size, with exposed pad not present. Pin functions are validated per TI SLOS217I Rev. December 2024.

Key Features

Applications

Equivalent & Alternatives

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

Compared with THS3001CDG4, THS3091DR offers superior bandwidth but requires thermal redesign due to PowerPAD packaging, while LMH6723MA/NOPB trades bandwidth and video linearity for lower cost and simpler layout-making THS3001CDG4 the optimal balance for broadcast video and communications infrastructure where 420MHz BW, 0.01% DG, and SOIC-8 compatibility are jointly required.

Availability

THS3001CDG4 is available at Aetrix Electronics and suitable for communications infrastructure, high-fidelity video systems, medical imaging front-ends, and test & measurement equipment requiring stable component supply across extended product lifecycles.

Supply support for THS3001CDG4 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 THS3001CDG4 belongs to TI's high-speed current-feedback op-amp product line, engineered specifically for demanding wideband signal chain applications including video, communications, and instrumentation where bandwidth, slew rate, and distortion performance are critical.

FAQ

What is the maximum supply voltage rating for THS3001CDG4?

The THS3001CDG4 has an absolute maximum supply voltage rating of ±16V (32V total), with recommended operating range from ±4.5V to ±16V. Operation beyond ±16V risks permanent damage per TI SLOS217I Absolute Maximum Ratings table. The THS3001CDG4 achieves optimal 420MHz bandwidth and 6500V/μs slew rate at ±15V, making ±16V the practical upper limit for reliable long-term use.

Does THS3001CDG4 support single-supply operation?

Yes, THS3001CDG4 supports single-supply operation from 9V to 32V, as specified in Section 5.3 Recommended Operating Conditions. When operated single-ended (e.g., V_CC+ = 30V, V_CC– = 0V), the input common-mode range extends from 0V to 27.2V, and output swing reaches ±12.8V into 1kΩ. However, dual-supply configuration (±15V) is required to achieve the full 420MHz bandwidth and –96dBc THD performance documented in the THS3001CDG4 datasheet.

What feedback resistor value should be used with THS3001CDG4 for G = 2 at ±15V?

For THS3001CDG4 configured at G = 2 with ±15V supplies, TI recommends a 680Ω feedback resistor (R_F) per Table 7-1 in the datasheet. This value balances bandwidth (385MHz), phase margin, and distortion (–80dBc THD at 10MHz). Using 1% tolerance metal-film resistors is mandatory; deviation beyond ±1% degrades frequency response predictability and increases harmonic distortion due to loop-gain variation.

How does THS3001CDG4 differ from voltage-feedback amplifiers in gain-bandwidth behavior?

Unlike voltage-feedback amplifiers, THS3001CDG4's bandwidth is determined primarily by feedback resistor value-not closed-loop gain-due to its current-feedback architecture. For example, bandwidth remains ~385MHz at G = 2 (R_F = 680Ω) and ~350MHz at G = 5 (R_F = 560Ω), whereas a VFB op-amp would drop bandwidth proportionally with gain. This allows THS3001CDG4 to maintain high speed across multiple gains without sacrificing stability or requiring compensation network changes.

Is THS3001CDG4 pin-compatible with other members of the THS3001 family?

Yes, THS3001CDG4 is pin-compatible with all variants in the THS3001 family-including THS3001IDGNR (HVSSOP-8) and THS3001CDR (SOIC-8)-as confirmed by identical pin configuration diagrams in Figure 4-1 and Table 4-1 of the THS3001CDG4 datasheet. All share the same 8-pin layout: NC/IN–/IN+/V_CC–/NC/OUT/V_CC+/NC. No PCB redesign is needed when migrating between temperature grades (C vs I) or packages (D vs DGN), provided thermal and layout guidelines for each package are followed.