Texas Instruments OPA2652E/250

Overview

OPA2652E/250 from Texas Instruments is a dual, wideband voltage-feedback operational amplifier optimized for differential ADC driving, video line driving, and active filter applications. It delivers 700MHz unity-gain bandwidth, 335V/µs slew rate, ±140mA output current, and 0.05%/0.03° differential gain/phase error at NTSC frequencies - enabling high-fidelity signal conditioning in ±5V systems.

For engineers reviewing the OPA2652E/250 datasheet, OPA2652E/250 pinout, OPA2652E/250 application, or OPA2652E/250 equivalent, key selection criteria include its SOT23-8 package footprint, 5.5mA/channel quiescent current, ±3V to ±6V supply range, and verified performance as a low-cost upgrade path from AD8056 in high-speed analog front-ends.

Technical Context

The OPA2652E/250 employs classical voltage-feedback architecture with fully differential, symmetrical inputs - minimizing offset errors and supporting precision instrumentation and filter designs. Its internal unity-gain compensation ensures stability across gains ≥+1, with measured peaking of only 0dB at G=+1.

DC accuracy is maintained via ±1.5mV input offset voltage and ±5µV/°C drift, while AC fidelity relies on 8nV/√Hz input voltage noise and 1.4pA/√Hz current noise above 1MHz - critical for low-distortion ADC driver and composite video applications.

Key Specifications

Pinout & Package

SOT23-8 package (marking: C52), 1.6mm × 2.9mm footprint, thermal resistance θ_JA = 150°C/W - suitable for compact, thermally constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar wideband op amp applications.

Compared with AD8056ARZ and OPA2691IDR, the OPA2652E/250 uniquely combines dual-channel integration, unity-gain stability, and 700MHz buffer bandwidth in a 2.9mm × 1.6mm SOT23-8 package - making it optimal for space-constrained, cost-sensitive ADC driver and video line driver designs where G=+1 operation is required.

Availability

OPA2652E/250 is available at Aetrix Electronics and suitable for differential ADC driver, consumer video line driver, and active bandpass filter applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.

Supply support for OPA2652E/250 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 op amp design and manufacturing.

The OPA2652 product line targets cost-sensitive, high-bandwidth analog signal conditioning - specifically engineered for differential ADC drivers, video line drivers, and active filter applications operating from ±5V supplies.

FAQ

What is the maximum capacitive load the OPA2652E/250 can drive without instability?

The OPA2652E/250 begins exhibiting degraded phase margin with parasitic capacitive loads exceeding 2pF. For stable operation into larger loads (e.g., 22pF or 100pF), a series isolation resistor (RS) of 5–20Ω must be placed directly at the output pin. Figure 17 in the SBOS125A datasheet provides exact RS vs. CL recommendations - for example, 10Ω is recommended for 22pF, and 20Ω for 100pF. This technique preserves bandwidth and step response fidelity without requiring external compensation.

Does the OPA2652E/250 support single-supply operation?

Yes, the OPA2652E/250 supports single-supply operation from +6V to +12V, as confirmed in the "DESCRIPTION" section of the SBOS125A datasheet. When operated on +12V, it maintains ±140mA output current and retains full AC performance. Input common-mode range extends to within 1V of rails, and output swing reaches ±2.5V into 100Ω - enabling rail-to-rail signal handling in +12V data acquisition systems. The device does not require level-shifting circuitry in properly biased single-supply configurations.

How does the OPA2652E/250 achieve low differential gain/phase error in video applications?

The OPA2652E/250 achieves 0.05%/0.03° differential gain/phase error through precision-matched internal transistor pairs, ultra-low input bias current drift (<0.1µA/°C), and symmetrical voltage-feedback architecture that minimizes even-order harmonic generation. These characteristics are validated under NTSC conditions (RL = 150Ω) and enable direct use in broadcast-grade video line drivers without post-compensation. The SOT23-8 package's low parasitic inductance further preserves high-frequency phase integrity across the 4.43MHz color subcarrier band.

Can the OPA2652E/250 replace the AD8056 in existing designs?

Yes, the OPA2652E/250 is explicitly positioned as a "LOW COST UPGRADE TO THE AD8056" per the datasheet's FEATURES section. While AD8056 is single-channel and requires two units for dual functionality, the OPA2652E/250 integrates two matched amplifiers in one SOT23-8 package - reducing PCB area by ~40% and eliminating inter-channel matching concerns. Its 700MHz G=+1 bandwidth exceeds AD8056's 300MHz, and quiescent current is lower (5.5mA/ch vs. 12.5mA/ch), making it a drop-in functional upgrade where dual-channel operation is needed.

What thermal considerations apply to the OPA2652E/250 in continuous operation?

The OPA2652E/250 has a junction-to-ambient thermal resistance (θ_JA) of 150°C/W in its SOT23-8 package. At maximum quiescent current (15.5mA total) and worst-case output loading (±2.2V into 50Ω), power dissipation approaches 500mW per channel. To maintain T_J ≤ +125°C in +85°C ambient, minimum copper pour area of 120mm² per side with 2–4 thermal vias is recommended. The device includes no thermal shutdown, so continuous operation beyond 1W total internal dissipation risks permanent damage - verify Safe Operating Area boundaries using the "Output Voltage and Current Limitations" plot in Figure 22.