Texas Instruments LP2902PWR

Overview

LP2902PWR from Texas Instruments is an ultra-low-power quadruple operational amplifier optimized for battery-operated systems, featuring 85 μA typical supply current, 2 mV typical input offset voltage, and rail-to-rail input common-mode range extending to ground. It operates from 3 V to 32 V single supply and serves as a precision signal conditioning front-end in portable instrumentation and LCD biasing circuits.

For engineers reviewing the LP2902PWR datasheet, LP2902PWR pinout, LP2902PWR application, or LP2902PWR equivalent, this page delivers verified electrical specifications, TSSOP-14 package details, real-world use cases in sensor interfaces and power supplies, and two validated alternative parts with functional and thermal distinctions.

Technical Context

The LP2902PWR implements four independent high-input-impedance op-amps in a single monolithic IC, each with bipolar input stage enabling 2 nA typical input bias current and ground-sensing capability. Its architecture prioritizes low quiescent power over bandwidth-gain-bandwidth product is 100 kHz-making it unsuitable for high-speed signal chains but ideal for DC-coupled sensing and slow-settling control loops.

It supports true single-supply operation via input common-mode range inclusive of ground and output swing within 1.9 V of rails at ±15 V dual supply (or VCC–1.9 V / 1.0 V from rails under load), with PSRR and CMRR both ≥75 dB across –40°C to +85°C ambient temperature range.

Key Specifications

Pinout & Package

TSSOP-14 (PW) package: 5.0 mm × 4.4 mm body, 0.65 mm lead pitch, 1.2 mm max height, exposed pad not present, RoHS-compliant NiPdAu/Sn lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad op-amp applications.

Compared with LM324DR and TLV2464IPW, the LP2902PWR uniquely balances sub-100 μA quiescent current with industrial-grade temperature range and ground-sensing inputs-enabling long-life, low-cost sensor nodes where speed is secondary to power and DC accuracy.

Availability

LP2902PWR is available at Aetrix Electronics and suitable for portable instrumentation, LCD display biasing, sensor signal conditioning, and linear power supply monitoring requiring stable component supply across industrial and consumer production cycles.

Supply support for LP2902PWR 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 chain solutions.

The LP2902PWR belongs to TI's ultra-low-power operational amplifier family, designed specifically for battery-constrained applications demanding high DC accuracy, ground-referenced inputs, and wide supply flexibility without sacrificing reliability.

FAQ

What is the maximum operating supply voltage for LP2902PWR?

The LP2902PWR supports a maximum single-supply voltage of 32 V, or ±16 V in dual-supply configuration. Absolute maximum ratings specify that exceeding 32 V on VCC+ relative to VCC– may cause permanent damage. For reliable long-term operation, TI recommends staying within the recommended operating conditions of 3 V to 32 V, with derating above 25 V depending on ambient temperature and thermal design. The LP2902PWR maintains specified performance up to its full 32 V rating when junction temperature remains below 150°C.

Is LP2902PWR pin-compatible with LM324 in TSSOP-14 footprint?

Yes, the LP2902PWR is fully pin-compatible with the LM324 in the TSSOP-14 (PW) package. Both devices share identical pin numbering, terminal functions (IN+, IN–, OUT, VCC+, VCC–), and mechanical dimensions. This allows direct substitution in existing LM324-based layouts without PCB modification. However, note that LP2902PWR draws only 85 μA per amplifier versus LM324's 1.2 mA, so power supply decoupling and thermal design may be relaxed when upgrading to LP2902PWR.

Does LP2902PWR support true single-supply operation with input signals at ground potential?

Yes, the LP2902PWR supports true single-supply operation with input common-mode voltage ranging from ground (0 V) up to VCC–1.5 V. This allows direct interfacing with sensors whose outputs swing to 0 V, such as thermocouples with cold-junction compensation or resistive bridge configurations referenced to system ground. Unlike many older op-amps, no level-shifting circuitry is needed-reducing component count and offset error sources in LP2902PWR-based designs.

What is the typical output drive capability of LP2902PWR at 5 V supply?

At VCC = 5 V, the LP2902PWR can source up to 7 mA and sink up to 4 mA while maintaining output voltage swing within specification. Under these conditions, the output typically swings from 0.82 V above ground to 3.4 V below VCC (i.e., 0.82 V to 4.18 V). This drive strength supports direct connection to LED drivers, analog multiplexers, and moderate-capacitance signal paths without external buffering. The LP2902PWR sustains this performance across –40°C to +85°C ambient temperature.

How does the input offset voltage drift of LP2902PWR impact precision DC measurements?

The LP2902PWR exhibits an input offset voltage drift of 10 μV/°C over 0°C to 70°C, contributing ≤0.7 mV total drift across a 70°C span. Combined with its 2 mV typical initial offset, worst-case total input-referred error remains under 4 mV-suitable for 12-bit systems with 2.5 V reference (LSB = 0.61 mV). For higher precision, the LP2902PWR's low drift enables one-time factory calibration instead of continuous software correction, reducing firmware complexity in LP2902PWR-based measurement instruments.