Texas Instruments LP358DR

Overview

LP358DR from Texas Instruments is a dual ultra-low-power operational amplifier optimized for battery-powered systems, featuring 54 µA typical supply current, 2 mV typical input offset voltage, and rail-to-rail input common-mode range extending to GND - enabling single-supply operation in portable instrumentation and LCD display biasing circuits.

For engineers reviewing the LP358DR datasheet, LP358DR pinout, LP358DR application, or LP358DR equivalent, key selection criteria include its 3–32 V wide supply range, GND-referenced inputs, low 2 nA input bias current, and compatibility with legacy LM358/LM2904 PCB layouts in cost-sensitive industrial and consumer designs.

Technical Context

The LP358DR integrates two independent, unity-gain-stable op-amps with Darlington-source/emitter-follower output stages that maintain quiescent current independence from load current. Its input stage supports common-mode voltages from GND to VCC – 1.5 V, enabling direct interfacing with sensors and microcontroller ADC references without level-shifting.

Designed for low-speed signal conditioning, it delivers 100 kHz gain-bandwidth product and 50 V/ms slew rate - sufficient for DC-coupled amplification, active filtering, and transducer signal buffering where power efficiency outweighs bandwidth demands.

Key Specifications

Pinout & Package

LP358DR is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and RoHS-compliant NiPdAu lead finish (Level-1 MSL rating).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM358DR, LP358DR reduces supply current by 92% with no trade-off in input offset or common-mode range; versus LP2904DR, it shares all electrical characteristics but targets commercial-grade applications where extended temperature range is unnecessary.

Availability

LP358DR is available at Aetrix Electronics and suitable for portable instrumentation, LCD display biasing, and consumer electronics requiring stable component supply with long-term production continuity.

Supply support for LP358DR 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 over 90 years of innovation in precision analog ICs and power management solutions.

The LP358DR belongs to TI's ultra-low-power operational amplifier product line, engineered specifically for energy-constrained applications where extended battery life and GND-referenced signal conditioning are critical design requirements.

FAQ

What is the maximum operating temperature for the LP358DR?

The LP358DR is specified for operation from 0°C to +70°C ambient temperature. This commercial-grade temperature range aligns with applications such as consumer electronics, portable test equipment, and indoor industrial interfaces. Exceeding 70°C ambient may cause parametric shift beyond datasheet limits, particularly in input offset voltage and supply current.

Does the LP358DR support true rail-to-rail output swing?

No, the LP358DR does not provide rail-to-rail output swing. Its output voltage swing is limited to approximately 0.7 V above GND and VCC – 1.9 V under load conditions. For example, with a 5 V supply and 0.35 mA sink current, the low-level output is typically 0.7 V - sufficient for CMOS logic interfacing but not for driving loads requiring true 0 V termination.

Can the LP358DR replace LM358 in existing PCB layouts?

Yes, the LP358DR is pin-compatible with the LM358 and LM2904 in the SOIC-8 package. It uses identical pin numbering, electrical interface, and footprint dimensions (4.90 mm × 3.91 mm), allowing direct substitution without layout modification. However, verify that the reduced supply current does not affect downstream biasing networks relying on LM358's higher quiescent draw.

What is the input common-mode voltage range of the LP358DR?

The LP358DR supports an input common-mode voltage range from GND (0 V) to VCC – 1.5 V. This allows direct connection of sensors or microcontroller DAC outputs referenced to GND, eliminating the need for level-shifting circuitry. Inputs may exceed this range up to the absolute maximum rating (±32 V differential), but correct output phase is only guaranteed when at least one input remains within the valid common-mode window.

Is the LP358DR suitable for driving capacitive loads?

The LP358DR is unity-gain stable and characterized for driving resistive loads up to 10 kΩ. While not explicitly tested for capacitive loads in the datasheet, its 100 kHz gain-bandwidth product and internal compensation suggest marginal stability with small capacitances (<100 pF). For larger capacitive loads (e.g., long cables or LCD panel traces), external series resistance (10–100 Ω) is recommended to prevent peaking or oscillation.