Texas Instruments THS4022CDGN

Overview

THS4022CDGN from Texas Instruments is a dual-channel, ultra-low-noise (1.2nV/√Hz), high-speed voltage-feedback operational amplifier stable at gains ≥10V/V, delivering 290MHz small-signal bandwidth, 470V/μs slew rate, and 30ns 0.1% settling time - used in ultrasound scanner front-ends for analog beamforming and signal conditioning.

For engineers reviewing the THS4022CDGN datasheet, THS4022CDGN pinout, THS4022CDGN application, or THS4022CDGN equivalent, key selection criteria include voltage noise floor, gain stability at 10V/V, dual-channel crosstalk (–54dBc), output drive capability (200mA), and HVSSOP-8 thermal performance (RθJA = 52°C/W).

Technical Context

The THS4022CDGN employs a voltage-feedback architecture optimized for wideband, low-distortion operation with closed-loop stability at minimum gain of 10V/V (or –9V/V). Its internal compensation enables predictable frequency response up to 290MHz at G = 10, while maintaining ≤30ns settling to 0.1% for precision pulse amplification.

Designed for ±4.5V to ±16V dual-supply operation, it achieves –68dBc THD at 1MHz (RL = 150Ω) and supports rail-to-rail output swing within ±12.9V (±15V supply, RL = 250Ω), making it suitable for high-fidelity analog signal chains requiring minimal harmonic corruption.

Key Specifications

Pinout & Package

HVSSOP-8 package (3.0 mm × 3.0 mm, 0.65 mm pitch), thermally enhanced for high-power dissipation in compact layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMH6629MA/NOPB and ADA4898-2ARZ, the THS4022CDGN uniquely balances 1.2nV/√Hz noise, 470V/μs slew rate, and guaranteed stability at G ≥ 10V/V in a dual-channel HVSSOP-8 - enabling compact, high-fidelity analog front-ends without trade-offs in speed, noise, or channel density.

Availability

THS4022CDGN is available at Aetrix Electronics and suitable for ultrasound scanner front-ends, source measurement units, and power quality meters requiring stable component supply, long-term lifecycle support, and consistent electrical performance across production batches.

Supply support for THS4022CDGN 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 signal chain solutions.

The THS402x family was designed specifically for demanding medical imaging, automated test equipment, and precision instrumentation applications requiring ultra-low noise, high speed, and robust gain stability.

FAQ

What is the minimum stable gain for the THS4022CDGN?

The THS4022CDGN is unconditionally stable at closed-loop gains ≥10V/V (noninverting) or ≤–9V/V (inverting). This is achieved through internal compensation and eliminates the need for external feedback network adjustments in fixed-gain configurations. Operating below this gain may cause peaking or oscillation, so designs targeting G < 10 must use alternative amplifiers or add external compensation.

Does the THS4022CDGN support single-supply operation?

Yes, the THS4022CDGN supports single-supply operation from 9V to 32V (as specified in Recommended Operating Conditions). Input common-mode range extends to within 1.2V of the negative rail and 1.7V of the positive rail (e.g., VICR = 1.2V to 30.3V at VCC = 32V), enabling true single-supply signal conditioning when biased appropriately. However, its dual-supply heritage means optimal distortion and bandwidth are realized with symmetric supplies.

What is the thermal resistance (RθJA) of the THS4022CDGN in HVSSOP-8 package?

The THS4022CDGN in the DGN (HVSSOP-8) package has a junction-to-ambient thermal resistance (RθJA) of 52°C/W under standard JEDEC test conditions (2-layer board, 1-in² copper pad). This value assumes proper PCB thermal design - including thermal vias under the exposed pad and adequate copper pour - and enables continuous operation at up to 7.5mA per amplifier (15mA total) with ≤30°C temperature rise above ambient at room temperature.

How does crosstalk between channels affect THS4022CDGN performance?

The THS4022CDGN specifies –54dBc channel-to-channel crosstalk at 1MHz, meaning a full-scale 1Vpp signal on Channel 1 induces ≤0.002Vpp (2mVpp) interference on Channel 2. This level is acceptable for most dual-channel applications like differential signal processing or independent sensor conditioning, but becomes critical in ultra-high-precision applications such as correlated double sampling or synchronous multi-channel lock-in amplification where sub-mV isolation is required.

Can the THS4022CDGN drive a 50Ω load directly?

The THS4022CDGN can drive a 50Ω load, but with reduced output swing and increased thermal stress. At ±15V supply, it delivers ±12V into 250Ω and ±13V into 1kΩ; into 50Ω, output swing compresses significantly due to current limiting (IO = 200mA max), and power dissipation rises sharply. For sustained 50Ω driving, external current-boosting stages or dedicated line drivers (e.g., THS3091) are recommended to preserve linearity and reliability.