Texas Instruments OPA2314ASDRBTEP

Overview

OPA2314ASDRBTEP from Texas Instruments is a dual-channel, rail-to-rail input/output CMOS operational amplifier optimized for low-power, low-noise precision signal conditioning in extended-temperature industrial and aerospace systems. It delivers 3 MHz gain-bandwidth, 14 nV/√Hz input voltage noise at 1 kHz, 0.5 mV typical offset voltage, and 150 µA/ch quiescent current across 1.8 V to 5.5 V supply - enabling high-fidelity sensor front-ends and battery-powered instrumentation operating from –40°C to +150°C.

For engineers reviewing the OPA2314ASDRBTEP datasheet, OPA2314ASDRBTEP pinout, OPA2314ASDRBTEP application, or OPA2314ASDRBTEP equivalent, key selection criteria include its extended-temperature qualification, integrated RF/EMI filtering, unity-gain stability with ≤300 pF capacitive loads, and compatibility with mega-ohm source impedances due to 0.2 pA input bias current.

Technical Context

The OPA2314ASDRBTEP employs a complementary differential input stage enabling rail-to-rail common-mode operation (–0.2 V to V+ + 0.2 V), with a transition region near V+ – 1.3 V where both N- and P-channel pairs conduct. Its class AB output stage drives ≥10 kΩ loads to within 5 mV of either rail at 1.8 V supply.

Internal EMI rejection filtering (–3 dB at ~80 MHz) suppresses rectification-induced offset shifts from 10 MHz–6 GHz interference. The device achieves unity-gain stability without external compensation and supports overload recovery in 5.2 µs while avoiding phase reversal during overdrive.

Key Specifications

Pinout & Package

OPA2314ASDRBTEP uses an 8-pin DFN (DRB) package with 0.65 mm pitch and exposed thermal pad on underside, requiring connection to V– for optimal thermal performance (θJC(bottom) = 11.6°C/W). The package height is 0.9 mm, supporting space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, low-power op amp applications.

Compared with OPA2314ASDRBTEP, OPA2333P-EP offers superior DC accuracy at higher power cost, while LMV722QDGKRQ1 trades EMI robustness and temperature range for automotive qualification - making OPA2314ASDRBTEP the balanced choice for extended-temp, low-noise, low-power industrial sensing.

Availability

OPA2314ASDRBTEP is available at Aetrix Electronics and suitable for battery-powered instrumentation, remote industrial sensing, and aerospace signal conditioning requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for OPA2314ASDRBTEP 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-reliability op amps for mission-critical systems.

The OPA2314ASDRBTEP belongs to TI's radiation-tolerant, extended-temperature op amp portfolio designed specifically for defense, aerospace, and medical applications demanding guaranteed performance from –40°C to +150°C.

FAQ

What is the maximum capacitive load the OPA2314ASDRBTEP can drive stably in unity-gain configuration?

The OPA2314ASDRBTEP remains unity-gain stable with pure capacitive loads up to 300 pF, as verified by phase margin measurements ≥65°. For loads exceeding 300 pF, a series output resistor (10–20 Ω) is recommended to suppress overshoot - though this introduces gain error. The OPA2314ASDRBTEP datasheet confirms stability with 1 nF when ESR is present, but design verification is required for >300 pF.

Does the OPA2314ASDRBTEP require external EMI filtering given its integrated RF rejection feature?

No, the OPA2314ASDRBTEP incorporates an internal low-pass filter with ~80 MHz –3 dB point that attenuates 10 MHz–6 GHz EMI, validated via EMIRR testing. External filtering is unnecessary for most industrial and aerospace applications unless extreme near-field RF exposure exists (e.g., adjacent to radar transmitters), in which case a 100 Ω resistor + 100 pF capacitor at the input may supplement immunity.

How does the OPA2314ASDRBTEP's rail-to-rail input stage behave near the positive supply rail?

The OPA2314ASDRBTEP uses complementary N- and P-channel input pairs, creating a transition region near V+ – 1.3 V where both conduct. Within this ~200–300 mV window, PSRR, CMRR, and THD degrade slightly - so critical DC applications should avoid sustained operation here. Outside this zone, full rail-to-rail common-mode range (–0.2 V to V+ + 0.2 V) is maintained with specified performance.

Can the OPA2314ASDRBTEP operate from a single 1.8 V supply while driving a 10 kΩ load to both rails?

Yes - the OPA2314ASDRBTEP's rail-to-rail output stage delivers full swing to within 5 mV of V+ or V– when sourcing/sinking ≤1 mA into 10 kΩ at 1.8 V supply, as confirmed by output voltage swing specifications. This capability enables direct interfacing with 1.8 V SAR ADCs without level-shifting circuitry, preserving signal fidelity and reducing component count.

What is the thermal pad connection requirement for the OPA2314ASDRBTEP's DFN-8 (DRB) package?

The exposed thermal pad on the OPA2314ASDRBTEP's DFN-8 package must be soldered to the V– (negative supply) net to achieve the specified θJC(bottom) = 11.6°C/W and ensure reliable operation at +150°C ambient. Connecting it to any other potential degrades thermal performance and risks exceeding junction temperature limits under full-load conditions.