Texas Instruments THS4022CDGNG4

Overview

THS4022CDGNG4 from Texas Instruments is a dual-channel, ultra-low-noise (1.2nV/√Hz), high-speed voltage-feedback operational amplifier optimized for ≥10V/V gain-stable applications. It delivers 290MHz small-signal bandwidth, 470V/μs slew rate, and 30ns 0.1% settling time at ±15V supply, enabling precision signal conditioning in ultrasound front-ends and source measurement units.

For engineers reviewing the THS4022CDGNG4 datasheet, THS4022CDGNG4 pinout, THS4022CDGNG4 application, or THS4022CDGNG4 equivalent, key selection criteria include its 200mA output drive capability, –68dBc THD at 1MHz, ±4.5V to ±16V dual-supply operation, and HVSSOP-8 package compatibility with space-constrained high-frequency PCB layouts.

Technical Context

The THS4022CDGNG4 employs a voltage-feedback architecture with internal compensation for unconditional stability at closed-loop gains ≥10V/V (or ≤–9V/V). Its bipolar input stage enables low input bias current (9–20µA typ) while maintaining ultra-low voltage noise-critical for preserving SNR in wideband sensor interfaces and RF signal chains.

Designed for demanding analog signal paths, it features rail-to-rail output swing (±12.9V into 250Ω at ±15V), high common-mode rejection (95dB at 25°C), and robust thermal performance (R_θJA = 52°C/W in HVSSOP-8), supporting continuous operation in industrial and medical instrumentation environments.

Key Specifications

Pinout & Package

HVSSOP-8 (DGN) package: 3mm × 3mm, 0.5mm pitch, exposed thermal pad, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMH6629MA/NOPB and ADA4898-2ARZ, THS4022CDGNG4 uniquely balances 2GHz GBW, 1.2nV/√Hz noise, and dual-channel integration-making it optimal for space-constrained, wideband medical and test equipment where both speed and SNR are critical.

Availability

THS4022CDGNG4 is available at Aetrix Electronics and suitable for ultrasound scanner front-ends, source measurement units, and power quality meters requiring stable component supply across extended production lifecycles.

Supply support for THS4022CDGNG4 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 over 90 years of innovation in high-performance analog ICs.

The THS402x family was engineered specifically for wideband, low-noise signal conditioning in medical imaging, automated test equipment, and precision instrumentation-prioritizing speed, noise, and stability over DC precision.

FAQ

What is the maximum stable closed-loop gain for THS4022CDGNG4?

The THS4022CDGNG4 is unconditionally stable at closed-loop gains ≥10V/V (non-inverting) or ≤–9V/V (inverting), as confirmed by TI's characterization data. This eliminates the need for external compensation components in fixed-gain configurations, simplifying design for ultrasound and SMU applications where gain accuracy and phase margin are critical.

Does THS4022CDGNG4 support single-supply operation?

Yes, THS4022CDGNG4 supports single-supply operation from 9V to 32V, as specified in Section 5.3 of the datasheet. Input common-mode range extends to within 1.2V of the negative rail, and output swing reaches within 1.1V of each rail-enabling use in 12V or 24V industrial systems without level-shifting circuitry.

What is the thermal resistance (RθJA) of THS4022CDGNG4 in its HVSSOP-8 package?

The junction-to-ambient thermal resistance (RθJA) for THS4022CDGNG4 in the DGN (HVSSOP-8) package is 52°C/W, per Section 5.5 of the datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves significantly with proper PCB copper pour and thermal vias under the exposed pad.

How does THS4022CDGNG4 compare to THS4021 in terms of pin compatibility and performance?

THS4022CDGNG4 is not pin-compatible with THS4021: THS4021 uses SOIC-8 or HVSSOP-8 with offset-null pins (1,8), while THS4022CDGNG4 uses HVSSOP-8 with dual-channel pinout (1OUT, 1IN–, 1IN+, VCC–, 2IN+, 2IN–, 2OUT, VCC+). Performance differs-THS4022CDGNG4 has 290MHz BW at G=10, whereas THS4021DGN achieves 350MHz-but both share identical noise, slew rate, and distortion specs.

Is THS4022CDGNG4 suitable for driving ADC inputs directly?

Yes, THS4022CDGNG4 is well-suited for driving high-speed ADC inputs due to its 200mA output drive, 30ns settling time, and low distortion (–68dBc). When paired with 150Ω or 1kΩ ADC input impedances, it maintains signal fidelity up to 10MHz-verified in TI's typical characteristics (Figures 5-19, 5-33). Layout best practices (short traces, local decoupling) are essential for optimal performance.