Texas Instruments OPA4336PA

Overview

OPA4336PA from Texas Instruments is a quad, single-supply, microPower CMOS operational amplifier optimized for battery-powered instrumentation. It features rail-to-rail output swing within 3 mV of rails, 125 µV max input offset voltage, 20 µA per amplifier quiescent current, and operation from 2.3 V to 5.5 V - enabling precision signal conditioning in portable medical devices and photodiode pre-amplifiers.

For engineers reviewing the OPA4336PA datasheet, OPA4336PA pinout, OPA4336PA application, or OPA4336PA equivalent, key selection criteria include its ultra-low IQ (20 µA/amplifier), rail-to-rail output capability under light load (100 kΩ), 115 dB open-loop gain, 1 pA input bias current, and SSOP-16 package compatibility with space-constrained PCB layouts.

Technical Context

The OPA4336PA implements a CMOS input stage with input common-mode range extending to the negative supply (–0.2 V) and up to (V+) – 1 V, supporting true single-supply operation. Its unity-gain stable architecture delivers 100 kHz gain-bandwidth product and 0.03 V/µs slew rate, suitable for low-frequency precision amplification without phase inversion even when inputs exceed supply rails.

All four amplifiers in the OPA4336PA are fully independent - eliminating crosstalk and interaction between channels. This isolation, combined with 76 dB minimum CMRR over temperature and 100 dB minimum open-loop gain at 25°C, ensures stable performance in multi-channel sensor front-ends and precision integrators.

Key Specifications

Pinout & Package

The OPA4336PA is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65 mm pitch, optimized for high-density PCB layouts while maintaining thermal resistance of 100°C/W (θ_JA). Its compact footprint (4.9 × 6.0 mm) supports miniaturized medical and test equipment designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA4336PA, OPA4340UA trades 11× higher power for 10× more bandwidth, while TLV2474CDR offers lower cost but sacrifices 4.8× higher offset and 30× higher IQ - making OPA4336PA optimal for ultra-low-power, DC-precision multi-channel sensing.

Availability

OPA4336PA is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, photodiode pre-amplifiers, and precision integrators requiring stable component supply across long production lifecycles.

Supply support for OPA4336PA 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 low-power signal chains.

The OPA4336PA belongs to TI's microAmplifier™ series - designed specifically for ultra-low-power, high-precision analog signal conditioning in space- and energy-constrained portable and medical electronics.

FAQ

What is the maximum operating temperature range for the OPA4336PA?

The OPA4336PA is specified from –40°C to +85°C for full parameter compliance, and operates reliably from –55°C to +125°C. Its extended temperature range supports deployment in automotive cabin modules, industrial field sensors, and outdoor medical telemetry units where ambient conditions exceed commercial limits. All electrical characteristics in the datasheet apply within the –40°C to +85°C range.

Does the OPA4336PA require external compensation for unity-gain stability?

No, the OPA4336PA is internally compensated and unity-gain stable. It maintains phase margin >45° with capacitive loads up to 300 pF in unity-gain configuration. For larger loads (e.g., >300 pF), adding a 50–100 Ω series resistor inside the feedback loop - as documented in TI's SBOS068C - restores stability without degrading DC accuracy. This behavior is verified across the full 2.3 V to 5.5 V supply range.

Can the OPA4336PA be used with a 2.1 V supply?

Yes, the OPA4336PA functions down to 2.1 V, though it is fully specified only from 2.3 V to 5.5 V. At 2.1 V, parameters such as output swing, GBW, and slew rate may degrade slightly - for example, output swing increases to ~5 mV from rail and GBW drops to ~85 kHz. Designers should verify timing and accuracy margins in final prototypes when operating below 2.3 V.

What is the meaning of "NC" pins on the OPA4336PA SSOP-16 package?

Pins 8 and 16 of the OPA4336PA are marked NC (No Connection) - they are not bonded to the die and serve no electrical function. These pins must remain unconnected on the PCB; routing traces to them or applying solder paste risks parasitic coupling, ESD susceptibility, or mechanical stress on the bond wires. TI's package drawing DBQ confirms both pins are unused and electrically isolated.

How does the OPA4336PA handle input voltages exceeding the supply rails?

The OPA4336PA features robust input protection: inputs tolerate voltages up to (V–) – 0.3 V and (V+) + 0.3 V without damage or phase inversion - a key advantage over older op amps. However, input current must be limited to ≤10 mA using series resistors if voltages exceed the common-mode range (–0.2 V to V+ – 1 V). This behavior is validated across –55°C to +125°C and enables safe interfacing with overvoltage-prone sensors.