Texas Instruments THS4222DRG4

Overview

THS4222DRG4 from Texas Instruments is a dual, rail-to-rail output, high-speed voltage-feedback operational amplifier optimized for low-distortion signal conditioning in data acquisition and video systems. It delivers 230 MHz small-signal bandwidth (G = 1), 975 V/µs slew rate, −90 dBc HD2 and −100 dBc HD3 at 5 MHz (RL = 499 Ω), and ±4.8 V output swing into 2 kΩ - enabling high-fidelity driving of ADC inputs and composite video lines.

For engineers reviewing the THS4222DRG4 datasheet, THS4222DRG4 pinout, THS4222DRG4 application, or THS4222DRG4 equivalent, key selection criteria include its dual-channel rail-to-rail output stage, 14 mA/ch quiescent current across 3–15 V supply range, differential gain/phase performance (0.007% / 0.007°), and compatibility with single- or dual-supply configurations in precision analog front-ends.

Technical Context

The THS4222DRG4 implements a voltage-feedback architecture with unity-gain stability and a fully differential output stage capable of swinging within 200 mV of either rail under load. Its internal compensation ensures stable operation with feedback resistors from 1 kΩ to 2 kΩ, supporting both noninverting and inverting gain configurations without external compensation.

Unlike the power-down variants THS4226 (DGQ) or THS4225 (DGN/DGK), the THS4222DRG4 lacks a PD pin and reference input - confirming it as a non-power-down dual op-amp. Its pinout maps two independent amplifiers sharing only supply rails, with no internal crosstalk mitigation beyond inherent layout isolation (−90 dB typical at 5 MHz).

Key Specifications

Pinout & Package

THS4222DRG4 is packaged in an 8-pin SOIC (D) body with standard JEDEC MS-012AC footprint (5.3 mm × 6.2 mm, 1.27 mm pitch). The package is RoHS-compliant and rated for industrial temperature range (−40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, rail-to-rail output op-amp applications.

Compared with OPA2691ID and LMH6629MA/NOPB, THS4222DRG4 uniquely balances rail-to-rail output swing, −100 dBc harmonic distortion at 5 MHz, and 230 MHz bandwidth - making it optimal for ADC driver and broadcast video roles where both dynamic range and linearity are simultaneously critical.

Availability

THS4222DRG4 is available at Aetrix Electronics and suitable for high-speed data acquisition, broadcast video signal conditioning, and active filtering applications requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for THS4222DRG4 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 heritage in high-performance op-amp design and manufacturing.

The THS4222DRG4 belongs to TI's THS422x family of rail-to-rail output, low-distortion, high-speed op-amps engineered specifically for demanding signal chain applications including data converter interfacing, video signal distribution, and precision instrumentation front-ends.

FAQ

What is the maximum supply voltage rating for THS4222DRG4?

The absolute maximum supply voltage for THS4222DRG4 is ±8.25 V (16.5 V total) across VS+ and VS− terminals. Operation beyond this risks permanent damage. Recommended operating range is ±1.35 V to ±7.5 V for dual supplies or 2.7 V to 15 V for single supplies, with 14 mA/ch quiescent current at ±5 V.

Does THS4222DRG4 support single-supply operation?

Yes, THS4222DRG4 supports true single-supply operation from 2.7 V to 15 V. At 5 V supply, it delivers 0.1 V to 4.9 V output swing into 2 kΩ and maintains 200 MHz small-signal bandwidth. Input common-mode range extends from 1.1 V to 3.9 V, allowing direct coupling of 2.5 V-referenced sensors or DAC outputs.

Is THS4222DRG4 pin-compatible with THS4226DGQ?

No, THS4222DRG4 is not pin-compatible with THS4226DGQ. THS4222DRG4 uses an 8-pin SOIC (D) package with no power-down (PD) or reference (REF) pins. THS4226DGQ uses a 10-pin VSSOP (DGQ) package with dedicated PD and REF pins on pins 5 and 10 - requiring PCB redesign and updated control logic.

What is the typical harmonic distortion performance of THS4222DRG4 at 10 MHz?

At 10 MHz, THS4222DRG4 delivers −82 dBc HD2 and −90 dBc HD3 into 499 Ω with ±5 V supplies and G = 1. This is confirmed by Figure 4 and Figure 5 in the SLOS399G datasheet, showing monotonic degradation from −90/−100 dBc at 5 MHz due to bandwidth roll-off and slew limiting.

Can THS4222DRG4 drive a 50 Ω load directly?

THS4222DRG4 can source/sink up to 100 mA, enabling direct 50 Ω drive at reduced output swing: ±2.5 V into 50 Ω (50 mA) is achievable, though output voltage compliance degrades to ±2.3 V due to internal resistance. For full 0–5 V swing into 50 Ω, use series 45 Ω termination with 50 Ω load to preserve matching and minimize reflections.