Texas Instruments OPA336MDBVREP

Overview

OPA336MDBVREP from Texas Instruments is a single-supply, micro-power CMOS operational amplifier in the MicroAmplifier™ series, designed for ultra-low-power battery-operated systems. It features 23 µA quiescent current per amplifier, 500 µV typical input offset voltage, rail-to-rail output swing within 3 mV of supply rails, and operates from 2.3 V to 5.5 V over –55°C to 125°C - enabling precision signal conditioning in portable medical instruments and photodiode preamplifiers.

For engineers reviewing the OPA336MDBVREP datasheet, OPA336MDBVREP pinout, OPA336MDBVREP application, or OPA336MDBVREP equivalent, key selection criteria include its 1 pA input bias current, 100 kHz gain-bandwidth product, 76–86 dB CMRR, low-noise performance (3 µV_p-p at 0.1–10 Hz), and SOT-23-5 (DBV) package compatibility with space-constrained PCB layouts.

Technical Context

The OPA336MDBVREP employs a unity-gain-stable CMOS input stage with common-mode input range extending to the negative rail (V– – 0.2 V), supporting true single-supply operation. Its open-loop gain exceeds 90 dB at 25°C with 25 kΩ load, and it maintains stable performance across temperature (–55°C to 125°C) and supply voltage (2.3 V to 5.5 V).

Input protection includes diode clamping to supply rails with ±10 mA absolute max input current; output short-circuit current is ±5 mA. The device is reverse-battery protected and specified for enhanced reliability under extended temperature stress per JEDEC standards (HAST, temperature cycling, bond intermetallic life).

Key Specifications

Pinout & Package

SOT-23-5 (DBV) surface-mount package, 1.45 mm maximum height, 2.9 mm × 1.6 mm footprint, RoHS-compliant NIPDAU lead finish, MSL Level-2-260°C-1 year.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar micro-power precision op-amp applications.

Compared with OPA336MDBVREP, OPA340UA offers 80× more bandwidth but consumes 9× more current, making it unsuitable for decade-long battery operation; LPV821DBVR reduces current by 35× but sacrifices 94% bandwidth, limiting use to static or slow-varying DC measurements.

Availability

OPA336MDBVREP is available at Aetrix Electronics and suitable for battery-powered medical instruments, photodiode preamplifiers, precision integrators, and high-impedance sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for OPA336MDBVREP 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 over 90 years of innovation in precision analog design and high-reliability manufacturing.

The OPA336MDBVREP belongs to TI's MicroAmplifier™ series - engineered specifically for ultra-low-power, high-accuracy signal conditioning in space- and energy-constrained applications such as portable diagnostics and remote environmental sensing.

FAQ

What is the minimum operating voltage for the OPA336MDBVREP?

The OPA336MDBVREP operates down to 2.1 V, though it is fully specified from 2.3 V to 5.5 V. At 2.1 V, key parameters like gain-bandwidth and output swing remain functional but may fall outside guaranteed limits. For production designs requiring guaranteed performance, use ≥2.3 V per the datasheet's recommended operating conditions. The OPA336MDBVREP's ability to start up and operate near 2.1 V supports legacy alkaline or lithium primary cells nearing end-of-life.

Does the OPA336MDBVREP support rail-to-rail input?

No, the OPA336MDBVREP does not support rail-to-rail input. Its common-mode input voltage range extends from (V–) – 0.2 V to (V+) – 1 V. While the output is rail-to-rail (within 3 mV), the input cannot reach the positive rail. This limitation must be considered when designing single-supply circuits with signals near V+; external level-shifting or resistor dividers may be needed. The OPA336MDBVREP's input stage is optimized for low bias current, not full rail access.

What is the maximum capacitive load the OPA336MDBVREP can drive stably?

The OPA336MDBVREP drives up to 300 pF stably in unity-gain configuration with no external compensation. With a 50–100 Ω series resistor inside the feedback loop and a 25 kΩ load to VS/2, it supports >1000 pF. Stability depends on resistive load placement: connecting RL to ground (vs. VS/2) improves capacitive load tolerance by ~2×. The OPA336MDBVREP's internal compensation is optimized for low-power, not high-C_L; exceeding recommended loads risks peaking or oscillation.

Is the OPA336MDBVREP pin-compatible with other SOT-23-5 op-amps?

The OPA336MDBVREP uses standard SOT-23-5 pinout (V–, –In, Out, +In, V+), matching industry convention for single op-amps. However, pin compatibility alone does not guarantee functional replacement due to differences in quiescent current, bandwidth, and input structure. For example, substituting a bipolar-input op-amp would introduce ~10 nA bias current, degrading high-Z sensor performance. Always verify electrical behavior - especially input bias, offset, and supply current - before drop-in use of the OPA336MDBVREP.

What packaging and reliability certifications apply to the OPA336MDBVREP?

The OPA336MDBVREP is packaged in a RoHS-compliant SOT-23-5 (DBV) with NIPDAU lead finish and MSL Level-2-260°C-1 year rating. It is an enhanced-product (EP) grade device qualified per JEDEC standards including HAST, temperature cycling, autoclave, electromigration, and bond intermetallic life testing for operation from –55°C to 125°C. This qualification pedigree makes the OPA336MDBVREP suitable for aerospace, defense, and industrial applications where long-term reliability under thermal stress is mandatory.