Texas Instruments THS3001CDGN

Overview

THS3001CDGN from Texas Instruments is a high-speed current-feedback operational amplifier optimized for large-signal transient response in video, imaging, and communication systems. It delivers 420MHz small-signal bandwidth (G = 1), 6500V/μs slew rate at ±15V supply, 40ns settling time to 0.1%, ≤3mV input offset voltage, and –96dBc THD at 1MHz - enabling ultra-fast ADC/DAC buffering and base station signal conditioning.

For engineers reviewing the THS3001CDGN datasheet, THS3001CDGN pinout, THS3001CDGN application, or THS3001CDGN equivalent, key selection criteria include its current-feedback architecture's gain-independent bandwidth control, HVSSOP-8 thermal performance (R_θJA = 56.9°C/W), 100mA output drive capability, and compatibility with ±4.5V to ±16V dual supplies or 9V–32V single supplies.

Technical Context

The THS3001CDGN employs a dielectrically isolated complementary bipolar (HVBiCOM) process with GHz f_T transistors, enabling true current-feedback operation where closed-loop bandwidth is set primarily by feedback resistor value-not gain-allowing independent optimization of speed and gain. Its transresistance-based architecture yields open-loop transimpedance up to 2.4MΩ at ±15V.

It operates in a single functional mode across split or single supplies, with input common-mode range extending to ±13.2V at ±15V rails and output swing reaching ±12.8V into 1kΩ. The device features separate inverting/noninverting input current noise specifications (16pA/√Hz vs 13pA/√Hz), reflecting asymmetric internal topology critical for noise-sensitive layout.

Key Specifications

Pinout & Package

HVSSOP-8 package (3mm × 4.9mm), thermally enhanced with exposed pad (not electrically connected); pin 1 marked via dot; RoHS-compliant, moisture sensitivity level 2a.

Key Features

Applications

Equivalent & Alternatives

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

Compared with THS3001CDGN, THS3091DGN trades supply flexibility and output current for raw bandwidth, while LMH6723MA sacrifices slew rate and settling speed for voltage-feedback robustness - making THS3001CDGN the optimal balance for ±15V video, imaging, and wideband IF applications requiring both speed and drive strength.

Availability

THS3001CDGN is available at Aetrix Electronics and suitable for broadcast video infrastructure, medical imaging subsystems, and wireless base station signal conditioning requiring stable component supply across extended temperature ranges (–40°C to 85°C).

Supply support for THS3001CDGN 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 THS3001CDGN belongs to TI's precision high-speed current-feedback amplifier product line, engineered specifically for demanding video, imaging, and communications applications where bandwidth, slew rate, and distortion performance are simultaneously critical.

FAQ

What is the maximum supply voltage for THS3001CDGN?

The THS3001CDGN supports dual-supply operation up to ±16V (32V total) or single-supply operation up to 32V. Absolute maximum ratings specify 33V between VCC+ and VCC–, but continuous operation beyond ±16V risks reliability degradation. Designers should observe the recommended operating conditions table, which caps VCC at ±16V for guaranteed performance and long-term reliability. The THS3001CDGN's HVBiCOM process enables this wide range while maintaining 420MHz bandwidth and 6500V/μs slew rate.

Does THS3001CDGN require external compensation components?

No, the THS3001CDGN is internally compensated and stable for gains ≥1 with standard feedback resistor values (e.g., 1kΩ for G = 1). Its current-feedback architecture eliminates the gain-bandwidth trade-off inherent in voltage-feedback op-amps, so stability depends primarily on feedback resistor selection - not closed-loop gain. Table 7-1 in the datasheet provides optimized RF values (e.g., 680Ω for G = 2 at ±15V) to maintain phase margin. Using 1% tolerance resistors is recommended to preserve bandwidth consistency. The THS3001CDGN does not require external capacitors or networks for basic operation.

How does THS3001CDGN's current-feedback architecture affect PCB layout?

THS3001CDGN's current-feedback topology demands symmetrical, low-capacitance routing between inverting (pin 2) and noninverting (pin 3) inputs to preserve common-mode rejection and prevent instability. Feedback resistor (RF) must be placed adjacent to the output (pin 6) and inverting input (pin 2) with minimal trace length - parasitic inductance here directly degrades bandwidth. The exposed thermal pad (pin 4/7 area) must be soldered to a solid ground plane for optimal R_θJA = 56.9°C/W. Unlike voltage-feedback amps, THS3001CDGN is highly sensitive to RF value; layout changes affecting RF effective resistance (e.g., solder mask thickness) will shift bandwidth predictably.

Can THS3001CDGN drive 50Ω transmission lines directly?

Yes, the THS3001CDGN can drive 50Ω loads directly when configured for G = 1 or G = 2, delivering up to ±2.9V into 150Ω at ±5V supply and ±12.1V into 150Ω at ±15V supply. For true 50Ω matching, use series termination at the output (e.g., 43Ω in series with 50Ω load) to avoid reflections while maintaining stability. At ±15V, it sources 85–120mA (per spec table), sufficient for 50Ω back-termination in video distribution. However, sustained 50Ω driving increases power dissipation - thermal design must account for up to 1.5W in HVSSOP-8, leveraging the exposed pad for heatsinking. The THS3001CDGN's 100mA output rating at ±5V confirms robust line-driving capability.

What is the input bias current specification for THS3001CDGN?

The THS3001CDGN specifies inverting input bias current (I_IB–) of 1–10μA and noninverting input bias current (I_IB+) of 2–10μA at T_A = 25°C, with full-range maxima of 15μA. These values reflect its complementary bipolar input stage - higher than FET-input amplifiers but essential for GHz f_T performance. Input bias currents flow out of both inputs, requiring matched source impedances (<1kΩ) to minimize offset voltage errors. The datasheet shows I_IB varies with temperature (Figure 5-3), increasing ~10× from –40°C to 85°C. For precision applications, designers should calculate worst-case V_OS contribution: ΔV_OS ≈ I_IB × R_IN. The THS3001CDGN's 3mV max V_IO already includes this effect under specified conditions.