Texas Instruments OPA2662AU

Overview

OPA2662AU from Burr-Brown is a dual, wide-bandwidth operational transconductance amplifier (OTA) optimized for high-speed current-output applications including video head drivers, laser diode drivers, and RF output stages. It delivers ±75mA output current per channel, 370MHz large-signal bandwidth (with optimization), 58mA/ns slew rate, and operates across –40°C to +85°C in SOL-16 surface-mount package.

For engineers reviewing the OPA2662AU datasheet, OPA2662AU pinout, OPA2662AU application, or OPA2662AU equivalent, key selection criteria include programmable quiescent current (±3mA to ±65mA), TTL-compatible enable/disable control (30ns ON / 200ns OFF), voltage-controlled current sourcing with fixed 3× current mirror ratio, and dual-channel isolation performance (–56dB crosstalk at 30MHz).

Technical Context

The OPA2662AU integrates two independent OTAs, each configured as a voltage-controlled current source with base (B), emitter (E), and collector (C) terminals analogous to bipolar transistor topology. Transconductance is externally adjustable via R_Q between Pin 5 and –V_CC, enabling trade-offs among bandwidth, harmonic distortion, and quiescent current.

Each OTA provides zero-for-zero differential input offset behavior, PTAT biasing for temperature-stable transconductance, and separate TTL-compatible enable inputs (EN1/EN2) that switch the C/E outputs into high-impedance state. The fixed 3× current mirror (I_C = 3 × I_E) enables precise current gain scaling without external feedback components.

Key Specifications

Pinout & Package

SOL-16 surface-mount package (Package Number 211), thermal resistance θ_JA = 100°C/W, lead-free compatible per manufacturer documentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar operational transconductance amplifier applications.

Compared with LMH6723MA and THS3202D, the OPA2662AU uniquely combines dual OTA topology, TTL-gated channel enable, and externally programmable quiescent current - enabling adaptive bandwidth/distortion trade-offs and true zero-static-power shutdown in time-multiplexed systems.

Availability

OPA2662AU is available at Aetrix Electronics and suitable for high-resolution video recording systems, optical communication modules, RF test instrumentation, and industrial laser control requiring stable component supply across extended temperature ranges.

Supply support for OPA2662AU 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

Burr-Brown Corporation was a U.S.-based analog semiconductor pioneer, acquired by Texas Instruments in 2000, known for high-performance op amps, data converters, and precision analog signal conditioning ICs.

The OPA2662AU belongs to Burr-Brown's high-speed operational transconductance amplifier product line, designed specifically for current-output applications demanding wide bandwidth, fast switching, and programmable operating points in video, RF, and optical systems.

FAQ

What is the absolute maximum supply voltage rating for the OPA2662AU?

The OPA2662AU has an absolute maximum rated supply voltage of ±6V DC. Operation beyond this limit - even momentarily - risks permanent damage due to junction breakdown. The device is specified for normal operation at ±5V, and derated performance is guaranteed from ±3V to ±6V only when configured with RE = 50kΩ and RC = 40Ω. Always observe the ±6V limit during power-up sequencing and fault conditions.

How does the OPA2662AU achieve zero-for-zero differential input behavior?

The OPA2662AU achieves zero-for-zero differential input behavior through its self-biased OTA architecture with PTAT (Proportional to Absolute Temperature) biasing. When the differential voltage between B and E terminals is exactly zero, the internal transconductance stage produces precisely zero collector and emitter output current - no external nulling or trimming is required. This behavior is maintained across the full –40°C to +85°C temperature range and is confirmed in the datasheet's transfer characteristic curves.

Can the OPA2662AU drive a 50Ω load directly from its collector output?

Yes, the OPA2662AU can drive a 50Ω load directly from its collector (C) output, as validated in the AC specifications: large-signal bandwidth of 200MHz and slew rate of 58mA/ns are both measured with RE = 100Ω and RC = 25Ω (equivalent to 50Ω total load). However, output voltage compliance is reduced to ±3.2V under these conditions, and thermal dissipation must be managed - at ±75mA into 50Ω, power dissipation exceeds 2.8W per channel, requiring careful PCB thermal design.

What is the purpose of the separate –VCC and –VCCOUT pins on the OPA2662AU?

Pin 8 (–V_CC) is the main negative power supply connection for internal bias circuitry, while Pin 9 (–V_CCOUT) is the dedicated return path for collector output currents. This separation minimizes noise coupling between power supply ripple and sensitive current-output nodes. Routing –V_CCOUT directly to the load ground (e.g., video head ground plane) avoids injecting collector current transients into the main supply rail, preserving PSRR and reducing crosstalk - a key requirement in dual-channel video and RF applications.

Is the OPA2662AU pin-compatible with the OPA2662AP DIP version?

No, the OPA2662AU (SOL-16) and OPA2662AP (16-pin plastic DIP) are not pin-compatible despite identical electrical functionality and pin numbering. The SOL-16 package uses gull-wing surface-mount leads with different mechanical spacing and thermal pad configuration, while the DIP uses through-hole leads. PCB layout, soldering profile, and thermal management must be redesigned when substituting between these packages - no direct drop-in replacement is possible without board revision.