Texas Instruments OPA2335AIDGKRG4

Overview

OPA2335AIDGKRG4 from Texas Instruments is a dual, zero-drift CMOS operational amplifier in MSOP-8 package, delivering 5 µV max input offset voltage, 0.05 µV/°C max drift, 2.7–5.5 V single-supply operation, rail-to-rail output swing, and 285 µA per-channel quiescent current - optimized for precision transducer signal conditioning in battery-powered instrumentation.

For engineers reviewing the OPA2335AIDGKRG4 datasheet, OPA2335AIDGKRG4 pinout, OPA2335AIDGKRG4 application, or OPA2335AIDGKRG4 equivalent, key selection criteria include guaranteed low offset drift over temperature, micro-power operation at 2.7 V, dual-channel integration in space-constrained layouts, and compatibility with high-impedance sensor interfaces requiring >110 dB CMRR and <1.4 µV_PP 0.01–10 Hz noise.

Technical Context

The OPA2335AIDGKRG4 employs auto-zeroing architecture with continuous-time main amplifier and 10 kHz correction cycle, achieving near-zero long-term drift without chopper-induced switching artifacts. Its input stage uses CMOS topology with ±70 pA typical input bias current and 5 pF common-mode input capacitance.

It operates across –40°C to +125°C with rail-to-rail output capable of swinging within 15 mV of either supply rail (RL = 10 kΩ), supports unity-gain stability, and features no phase reversal under common-mode overvoltage - critical for unbuffered sensor front-ends in medical and industrial measurement systems.

Key Specifications

Pinout & Package

OPA2335AIDGKRG4 is housed in an 8-pin MSOP (DGK) package, 3.0 mm × 3.0 mm × 1.07 mm, with exposed thermal pad (not electrically connected). Pin 1 marked by dot; pin numbering counterclockwise from top-left corner when marking side faces up.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2188AIDR and MCP6V82-E/SN, OPA2335AIDGKRG4 uniquely balances 5 µV max offset, 0.05 µV/°C drift, 2 MHz bandwidth, and 285 µA/channel in MSOP-8 - making it optimal for space-constrained, wide-temperature, dual-channel precision measurement where moderate power and proven TI reliability are prioritized.

Availability

OPA2335AIDGKRG4 is available at Aetrix Electronics and suitable for electronic scales, medical instrumentation, handheld test equipment, and battery-powered instrumentation requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for OPA2335AIDGKRG4 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 precision op amps and signal chain solutions.

The OPA2335AIDGKRG4 belongs to TI's Zerø-Drift Series, designed specifically for high-accuracy, low-power, single-supply sensor signal conditioning in harsh thermal environments - targeting medical, industrial, and portable instrumentation markets.

FAQ

What is the maximum operating temperature range for the OPA2335AIDGKRG4?

The OPA2335AIDGKRG4 is fully specified from –40°C to +125°C and rated for continuous operation up to +150°C junction temperature. Its guaranteed electrical performance - including 5 µV max offset and 0.05 µV/°C drift - applies across the full –40°C to +125°C ambient range, making it suitable for under-hood automotive and industrial control applications where thermal stability is critical. The OPA2335AIDGKRG4 thermal resistance (θ_JA) is 150°C/W in MSOP-8 package.

Does the OPA2335AIDGKRG4 include a shutdown feature?

No, the OPA2335AIDGKRG4 does not include a shutdown feature. It is the non-shutdown dual version of the Zerø-Drift series; the shutdown-capable counterpart is the OPA2334 (e.g., OPA2334AIDGST). The OPA2335AIDGKRG4 draws 570 µA total quiescent current (285 µA per channel) continuously and has no enable/disable pin. This simplifies layout and eliminates wake-up delay, benefiting always-on instrumentation such as continuous vital sign monitors.

What package type and pin count does the OPA2335AIDGKRG4 use?

The OPA2335AIDGKRG4 uses an 8-pin MSOP (Micro Small Outline Package) with DGK designation, measuring 3.0 mm × 3.0 mm × 1.07 mm. It is distinct from the SO-8 version (OPA2335AIDR) and contains no exposed thermal pad connection. Pin 1 is marked by a dot; pinout follows standard dual op amp configuration with independent inputs and outputs for Channels A and B, sharing common V+ and V– supplies.

Can the OPA2335AIDGKRG4 drive capacitive loads without oscillation?

Yes, the OPA2335AIDGKRG4 is unity-gain stable and characterized for capacitive load drive - its typical small-signal overshoot remains below 10% with up to 1000 pF load (RL = 10 kΩ), as shown in Figure 7 of the SBOS245D datasheet. For loads >100 pF, a series resistor (10–100 Ω) between output and capacitance is recommended to maintain phase margin. The device exhibits no unexpected phase reversal, ensuring robust behavior during transient overloads in sensor interface circuits.

How does the auto-zero architecture of the OPA2335AIDGKRG4 affect system-level noise performance?

The OPA2335AIDGKRG4 uses a time-continuous 2 MHz main amplifier corrected every 100 µs (10 kHz rate), resulting in negligible fundamental energy at 10 kHz and no measurable aliasing in baseband. Its 0.01–10 Hz noise is 1.4 µV_PP, and broadband noise density is 20 fA/√Hz at 10 Hz - ideal for DC-coupled, low-frequency applications like thermocouple and strain gauge measurement. Unlike chopper amplifiers, it introduces no switching artifacts below 20 MHz, eliminating need for external filtering in most precision designs.