Texas Instruments OPA2652E/3K

Overview

OPA2652E/3K from Texas Instruments is a dual, low-cost, wideband voltage-feedback operational amplifier in SOT23-8 package, delivering 700MHz unity-gain bandwidth, 335V/µs slew rate, and ±140mA output current per channel at ±5V supply. It serves as a differential ADC driver (e.g., for ADS807), video line driver, and active filter building block in high-speed signal conditioning.

For engineers reviewing the OPA2652E/3K datasheet, OPA2652E/3K pinout, OPA2652E/3K application, or OPA2652E/3K equivalent, key selection criteria include its 700MHz G=+1 bandwidth, ±1.5mV input offset voltage, 0.05%/0.03° differential gain/phase error, and SOT23-8 thermal resistance of 150°C/W - all critical for precision high-frequency analog front-ends.

Technical Context

The OPA2652E/3K employs classical voltage-feedback architecture with fully symmetrical differential inputs, enabling precise DC accuracy and minimal even-order distortion. Its internal unity-gain compensation ensures stability across configurations including noninverting (G=+1 to +10) and inverting (G=–1) topologies.

Designed for ±3V to ±6V operation, it supports both bipolar and single-supply use (up to +12V), with rail-to-rail output swing limited by load: ±2.5V into 100Ω and ±3.0V into 1kΩ. Input common-mode range extends to ±4.0V at +25°C, and closed-loop output impedance remains below 0.06Ω below 100kHz.

Key Specifications

Pinout & Package

SOT23-8 package (marking C52), 0.65mm pitch, 2.9mm × 2.8mm footprint, thermal resistance θ_JA = 150°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2652E/3K, OPA2650 trades 200MHz bandwidth for lower cost and identical footprint, while AD8056 offers superior power-supply rejection at the expense of higher quiescent current and larger package - making OPA2652E/3K optimal for space-constrained, high-bandwidth, cost-sensitive designs.

Availability

OPA2652E/3K is available at Aetrix Electronics and suitable for differential ADC driver, consumer video line driver, and active filter applications requiring stable component supply, consistent SOT23-8 thermal performance, and guaranteed traceable sourcing.

Supply support for OPA2652E/3K 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 amps and data converter interfaces.

The OPA2652E/3K belongs to TI's OPAx65x family of wideband voltage-feedback op amps, engineered specifically for cost-sensitive, high-frequency signal conditioning in ADC drivers, video infrastructure, and communications systems.

FAQ

What is the maximum operating supply voltage for the OPA2652E/3K?

The OPA2652E/3K supports a maximum specified operating voltage of ±6V, with absolute maximum ratings up to ±6.5V. Operation beyond ±6V risks exceeding internal power dissipation limits and may cause permanent damage. At ±6V, quiescent current increases to 15.5mA total, and output swing remains within ±2.2V into 100Ω, as confirmed in the Electrical Characteristics table under "Maximum Operating Voltage" and "Voltage Output Swing" sections.

Can the OPA2652E/3K drive a 50Ω load directly?

Yes, the OPA2652E/3K can drive a 50Ω load directly: it delivers ±140mA output current and sustains ±2.5V swing into 100Ω, implying ≥±2.2V into 50Ω per the Output Voltage Swing specifications. However, for optimal harmonic distortion and stability, a 5–10Ω series isolation resistor is recommended between the OPA2652E/3K output and the 50Ω load to manage capacitive parasitics and maintain >45dB SFDR at 5MHz.

Does the OPA2652E/3K require external compensation for unity-gain stability?

No, the OPA2652E/3K is internally compensated for unity-gain stability. Its datasheet confirms "internally compensated for unity gain stability" and shows 0dB peaking at G=+1 in Figure 1. This allows direct use as a buffer without external components, unlike decompensated op amps that mandate minimum noise gain. The 700MHz bandwidth at G=+1 is achieved solely through internal compensation.

What is the thermal resistance (θ_JA) of the OPA2652E/3K in its SOT23-8 package?

Per the Thermal Characteristics table, the OPA2652E/3K in SOT23-8 (DCN) package has a junction-to-ambient thermal resistance (θ_JA) of 150°C/W. This value assumes standard JEDEC 2-layer board conditions; actual performance improves with copper pour and thermal vias. At 11mA total quiescent current and ±5V supply, power dissipation is ~110mW, resulting in ~16.5°C junction rise above ambient - well within the –40°C to +85°C operating range.

How does the OPA2652E/3K achieve low differential gain and phase error?

The OPA2652E/3K achieves 0.05%/0.03° dG/dφ via its symmetrical voltage-feedback architecture, low input bias current (±4µA max), and optimized internal transistor matching. These features minimize amplitude- and phase-dependent nonlinearities in video signals. Measured under NTSC conditions with 150Ω load, this performance is intrinsic to the die design and requires no external trimming - enabling drop-in use in broadcast and consumer video line drivers without calibration.