Texas Instruments LM2902LVQPWRQ1

Overview

LM2902LVQPWRQ1 from Texas Instruments is a quad-channel, AEC-Q100 Grade 1 qualified automotive operational amplifier designed for low-voltage, cost-sensitive systems. It operates from 2.7 V to 5.5 V, delivers ±1 mV input offset voltage, 1 MHz unity-gain bandwidth, 40 nV/√Hz input voltage noise density, and 90 µA per-channel quiescent current-enabling precision single-supply current sensing in HEV/EV motor control and ADAS sensor interfaces.

For engineers reviewing the LM2902LVQPWRQ1 datasheet, LM2902LVQPWRQ1 pinout, LM2902LVQPWRQ1 application, or LM2902LVQPWRQ1 equivalent, key selection criteria include its rail-to-rail input capability (V– to V+ – 1 V), no phase reversal under overdrive, 2-kV HBM ESD rating, and guaranteed operation from –40°C to 125°C in TSSOP-14 packaging.

Technical Context

The LM2902LVQPWRQ1 implements a P-channel input differential pair with parallel N-channel stage to eliminate phase reversal while maintaining rail-to-rail common-mode input range down to V–. Its unity-gain stability is verified across 2.7 V–5.5 V supply and full temperature range, with overload recovery time of 1 µs and 75° phase margin at G = +1 with 10 pF load.

Electrical overstress protection uses integrated steering diodes routing transient currents to internal power rails, supporting robust operation in noisy automotive environments. EMI rejection ratio exceeds 60 dB from 10 MHz to 1 GHz, validated per TI's standardized test methodology.

Key Specifications

Pinout & Package

TSSOP-14 package (4.40 mm × 5.00 mm body size) with exposed thermal pad; JEDEC MO-153 compliant, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM2902QDRQ1, LM2902LVQPWRQ1 reduces offset error by 67% and cuts quiescent power by 40%, making it superior for precision low-power automotive sensing. Against TSV914IQDT, it trades bandwidth for lower noise, tighter offset, and stronger automotive qualification-favoring reliability-critical applications over speed.

Availability

LM2902LVQPWRQ1 is available at Aetrix Electronics and suitable for HEV/EV inverter control, ADAS sensor signal conditioning, and automotive body electronics requiring stable component supply across extended temperature and long production lifecycles.

Supply support for LM2902LVQPWRQ1 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, personal electronics, and communications markets.

The LM290xLV-Q1 product line was engineered specifically for AEC-Q100 Grade 1 automotive applications demanding low-voltage operation (2.7–5.5 V), ultra-low power, and robust performance across –40°C to 125°C ambient conditions.

FAQ

What is the maximum capacitive load the LM2902LVQPWRQ1 can drive while maintaining stability?

The LM2902LVQPWRQ1 remains unity-gain stable with up to 1000 pF capacitive load, as confirmed by phase margin measurements showing ≥70° at 100 pF and ≥40° at 1000 pF. For loads exceeding 100 pF, TI recommends adding a small series resistor (10–50 Ω) between output and capacitive node to isolate the amplifier from reactive feedback-this configuration maintains stability without degrading step response beyond 5 µs settling to 0.01%.

Does the LM2902LVQPWRQ1 support true rail-to-rail output swing?

No-the LM2902LVQPWRQ1 does not provide rail-to-rail output. Its output swings to within 40 mV of V– and 1 V of V+ under full-load conditions (RL ≥ 2 kΩ) across –40°C to 125°C. This limitation is intentional to ensure output stage linearity and thermal stability in automotive environments; for applications requiring closer-to-rail swing, consider the TLV9064-Q1, which achieves 10 mV from rails but at higher quiescent current.

Can the LM2902LVQPWRQ1 be used in dual-supply configurations?

Yes-the LM2902LVQPWRQ1 supports split-supply operation from ±1.35 V to ±2.75 V (i.e., total supply 2.7–5.5 V). In dual-supply mode, the common-mode input range extends from V– – 0.1 V to V+ – 1 V, preserving its ability to handle signals near either rail. However, its primary design focus is single-supply automotive systems; dual-supply use is valid but not optimized for PSRR symmetry or input offset drift versus supply imbalance.

What is the short-circuit current limit of the LM2902LVQPWRQ1 output stage?

The LM2902LVQPWRQ1 output stage limits short-circuit current to ±40 mA per amplifier, measured at VS = 5.5 V and TA = 25°C. This current limit is thermally regulated and decreases gradually with rising junction temperature-dropping to ±30 mA at 125°C-to prevent permanent damage during sustained fault conditions. The device recovers automatically once the overload is removed and junction temperature falls below thermal shutdown threshold.

How does the LM2902LVQPWRQ1 handle electromagnetic interference in automotive environments?

The LM2902LVQPWRQ1 features integrated EMI filtering that provides ≥60 dB rejection from 10 MHz to 1 GHz, as measured per TI's standardized EMIRR+ test method. This performance stems from on-die RC filters at input pins and optimized internal node shielding-not external components. In practice, this allows reliable operation near high-noise sources like ignition coils and DC-DC converters without additional ferrite beads or LC filters in most layout configurations.