Texas Instruments OPA2354AIDGKTG4

Overview

OPA2354AIDGKTG4 from Texas Instruments is a dual-channel, rail-to-rail input/output, 250-MHz unity-gain stable CMOS operational amplifier optimized for high-speed video, photodiode transimpedance, and ADC/DAC interface applications. It delivers 150 V/µs slew rate, 6.5 nV/√Hz input voltage noise, ±100 mA output current per channel, and operates from 2.5 V to 5.5 V supply.

For engineers reviewing the OPA2354AIDGKTG4 datasheet, OPA2354AIDGKTG4 pinout, OPA2354AIDGKTG4 application, or OPA2354AIDGKTG4 equivalent, this page provides verified specifications, package-validated pin functions, real-world application context, and two confirmed alternative parts with documented functional and application-level differences.

Technical Context

The OPA2354AIDGKTG4 implements a complementary rail-to-rail input stage (N- and P-channel parallel pairs) enabling common-mode operation 100 mV beyond both supply rails, and a Class AB rail-to-rail output stage delivering 100 mV output swing from rails at 1 kΩ load. Its voltage-feedback architecture achieves 100-MHz gain-bandwidth product while remaining unity-gain stable.

Thermal shutdown activates at 160°C junction temperature and resets at 140°C. Channel-to-channel crosstalk is –100 dB at 5 MHz, confirming fully independent dual-amplifier circuitry with minimal interaction-critical for multi-channel signal integrity in video and communications systems.

Key Specifications

Pinout & Package

The OPA2354AIDGKTG4 is packaged in an 8-pin VSSOP (DGK) with body size 3.00 mm × 3.00 mm and exposed thermal pad (PowerPAD™). The PowerPAD must be connected to V− or left floating per TI design guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2354AIDGKR, the OPA2354AIDGKTG4 offers identical performance in a smaller reel format ideal for development and pilot runs; compared with OPA2355AIDGKT, it provides higher bandwidth, true rail-to-rail input, and lower noise-making it the only choice for precision video, photodiode, or fast ADC interface applications.

Availability

OPA2354AIDGKTG4 is available at Aetrix Electronics and suitable for video processing, photodiode transimpedance amplification, and high-speed ADC/DAC interface applications requiring stable component supply, guaranteed traceability, and long-term lifecycle support.

Supply support for OPA2354AIDGKTG4 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, embedded processing, and connectivity technologies, with decades of expertise in high-performance op amp design and manufacturing.

The OPAx354 family-including OPA2354AIDGKTG4-is engineered for video, ultrasound, optical networking, and high-speed signal conditioning, emphasizing bandwidth, low noise, rail-to-rail operation, and robust thermal performance across –40°C to +125°C.

FAQ

What is the maximum continuous output current per channel for OPA2354AIDGKTG4?

The OPA2354AIDGKTG4 delivers ±100 mA continuous output current per channel at 5 V supply, as specified in the Electrical Characteristics table (Section 7.7). This rating applies under recommended operating conditions (TA = 25°C, RL = 1 kΩ). Peak short-circuit current reaches ~200 mA, but sustained operation above ±100 mA requires thermal derating and is not recommended for reliability. The OPA2354AIDGKTG4 datasheet confirms this value with test conditions and thermal limits.

Does OPA2354AIDGKTG4 support true rail-to-rail input operation?

Yes, the OPA2354AIDGKTG4 supports true rail-to-rail input: its common-mode input voltage range extends 100 mV beyond both V− and V+, as verified in Section 7.7 (VCM = (V−) −0.1 V to (V+) + 0.1 V). This is achieved via a complementary N- and P-channel input stage. The OPA2354AIDGKTG4 maintains specified offset voltage and CMRR across this full range, unlike amplifiers with limited input swing.

What is the thermal shutdown behavior of OPA2354AIDGKTG4?

The OPA2354AIDGKTG4 incorporates on-chip thermal shutdown that activates at 160°C junction temperature and automatically resets when junction temperature falls below 140°C. This protection is documented in Section 7.7 (Thermal Shutdown) and ensures safe operation during transient overloads or inadequate PCB heat sinking. The OPA2354AIDGKTG4 resumes normal function without external intervention once cooled.

Can OPA2354AIDGKTG4 drive 75-Ω video cables directly?

Yes, the OPA2354AIDGKTG4 is explicitly characterized for 75-Ω video cable driving: differential gain is 0.02% and differential phase is 0.09° under NTSC conditions with RL = 150 Ω (representing back-terminated 75-Ω line), as stated in Section 1 (Features) and Figure 18. Its ±100 mA output current and rail-to-rail output swing enable direct connection without external buffers or level-shifting components.

Is OPA2354AIDGKTG4 unity-gain stable?

Yes, the OPA2354AIDGKTG4 is unity-gain stable, with a specified unity-gain bandwidth of 250 MHz and stable small-signal step response shown in Figure 3. The device remains stable with closed-loop gains ≥1 V/V and requires no external compensation. This is confirmed in Section 1 (Features), Section 8.1 (Overview), and Figure 1 (Noninverting Small-Signal Frequency Response) of the OPA2354AIDGKTG4 datasheet.