Texas Instruments OPA2206ADGKT

Overview

OPA2206ADGKT from Texas Instruments is a dual-channel, precision e-trim™ operational amplifier with integrated ±40-V input overvoltage protection beyond supplies, 25-µV max offset voltage, ±0.5-µV/°C max drift, 500-pA max input bias current, and rail-to-rail output - designed for high-accuracy analog input modules and source measurement units operating from –40°C to +125°C.

For engineers reviewing the OPA2206ADGKT datasheet, OPA2206ADGKT pinout, OPA2206ADGKT application, or OPA2206ADGKT equivalent, this page delivers verified specifications, SOIC-8 package layout, real-world use cases in instrumentation and data acquisition, and validated alternative parts for design continuity and supply resilience.

Technical Context

The OPA2206ADGKT implements super-beta bipolar input transistors with TI's e-trim™ technology to achieve ultra-low offset and drift while maintaining low input current (500 pA max) and low voltage noise (8 nV/√Hz). Its input overvoltage protection activates at ±40 V beyond supply rails, eliminating external clamping components.

It delivers 3.6-MHz gain-bandwidth, 4-V/µs slew rate, >124-dB AOL/CMRR/PSRR across temperature, and operates from ±2.25 V to ±18 V dual supply (or 4.5–36 V single supply), supporting precision signal conditioning in harsh industrial environments.

Key Specifications

Pinout & Package

OPA2206ADGKT is packaged in an 8-pin SOIC (D package) with exposed pad not present; thermal resistance R_θJA = 124.8°C/W. Pin functions are electrically isolated per channel and support independent dual-amplifier configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2206ADGKT, OPA2189IDR trades input protection for lower noise and higher speed, while ADA4522-2ARMZ offers superior long-term drift stability at the cost of higher power and no overvoltage hardening - making OPA2206ADGKT optimal for ruggedized, maintenance-free analog input designs.

Availability

OPA2206ADGKT is available at Aetrix Electronics and suitable for analog input modules, source measurement units, and digital multimeters requiring stable component supply, extended temperature operation, and field-reliable overvoltage tolerance.

Supply support for OPA2206ADGKT 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 delivering analog and embedded processing solutions with deep expertise in precision signal chain design.

The OPAx206 product line was engineered specifically for high-accuracy, fault-tolerant industrial measurement systems - combining e-trim™ precision, super-beta input performance, and integrated ±40-V input overvoltage protection in a low-power package.

FAQ

What is the maximum input overvoltage protection rating for OPA2206ADGKT?

The OPA2206ADGKT provides input overvoltage protection up to ±40 V beyond the supply rails - meaning it withstands voltages from (V–) – 40 V to (V+) + 40 V without damage or parametric shift. This is confirmed in Section 5.7 and 5.8 of the SBOSA11E datasheet under "Input overvoltage protection" with test conditions across –40°C to +125°C. The OPA2206ADGKT uses internal clamping circuitry that limits input current to ≤10 mA during overvoltage events.

Does OPA2206ADGKT support single-supply operation?

Yes, OPA2206ADGKT supports true single-supply operation from 4.5 V to 36 V. Its input common-mode range extends from (V–) + 1 V to (V+) – 1.4 V, and its rail-to-rail output swings within 200 mV of each rail into 10-kΩ loads. These characteristics are specified in Sections 5.3 and 5.7 of the SBOSA11E datasheet and validated at TA = 25°C and full temperature range. The OPA2206ADGKT maintains >124-dB CMRR and PSRR even under single-supply biasing.

What is the thermal resistance (RθJA) of OPA2206ADGKT in SOIC-8 package?

The junction-to-ambient thermal resistance (RθJA) for OPA2206ADGKT in the D (SOIC-8) package is 124.8°C/W, as published in Section 5.5 "Thermal Information: OPA2206" of the SBOSA11E datasheet. This value assumes standard JEDEC 2S2P board layout per JESD51-7. The OPA2206ADGKT also has RθJC(top) = 64.9°C/W and ψJB = 67.4°C/W, confirming effective heat transfer through the package top and board interface.

How does the e-trim™ technology in OPA2206ADGKT improve long-term stability?

The e-trim™ technology in OPA2206ADGKT uses laser-trimmed thin-film resistors and proprietary trimming algorithms to achieve initial offset voltage ≤±4 µV (typical) and drift ≤±0.08 µV/°C (typical), with max values of ±25 µV and ±0.5 µV/°C over –40°C to +125°C. Unlike auto-zero or chopper amplifiers, e-trim™ avoids switching artifacts and 1/f noise, preserving signal fidelity in DC-coupled precision applications. This is documented in Sections 1, 3, and 5.7 of the SBOSA11E datasheet for OPA2206ADGKT.

Can OPA2206ADGKT drive capacitive loads without instability?

OPA2206ADGKT is stable driving up to 30 pF capacitive loads with 10-kΩ series isolation resistance (R_ISO), as shown in Figure 5-35 ("Phase Margin vs Capacitive Load") and Figure 5-33/34 ("Overshoot vs Capacitive Load") of the SBOSA11E datasheet. Without R_ISO, phase margin drops below 60° beyond 10 pF. For larger loads, external R_ISO ≥25 Ω is recommended. The OPA2206ADGKT's internal compensation ensures unity-gain stability and eliminates need for external compensation networks in most PCB layouts.