Texas Instruments TLC2254AQDREP

Overview

TLC2254AQDREP from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for micropower, low-noise precision signal conditioning in battery-powered and high-impedance sensor interfaces. It delivers 19 nV/√Hz input voltage noise at 1 kHz, 1 pA typical input bias current, 850 µV maximum input offset voltage at 25°C, 35 µA per channel supply current, and full rail-to-rail output swing - enabling direct interfacing with 5 V or ±5 V ADCs in portable medical monitors and remote environmental sensors.

For engineers reviewing the TLC2254AQDREP datasheet, TLC2254AQDREP pinout, TLC2254AQDREP application, or TLC2254AQDREP equivalent, this page provides verified specifications, SOIC-14 package layout, real-world use cases in sensor front-ends and data acquisition, and two validated alternative op-amps with documented performance trade-offs.

Technical Context

The TLC2254AQDREP implements a CMOS-based Advanced LinCMOS™ input stage with complementary differential pairs, delivering ultra-low input bias current (1 pA typ) and rail-inclusive common-mode input range (down to VDD−). Its output stage uses Class AB push-pull architecture to achieve rail-to-rail swing while maintaining stability with 100 pF capacitive loads.

It operates across −40°C to +125°C with guaranteed 850 µV max VIO and 0.5 µV/°C tempco, fully characterized at both 5 V single-supply and ±5 V split-supply configurations. The device features internal ESD protection exceeding 2000 V HBM and 150 V machine model, meeting automotive-grade reliability requirements.

Key Specifications

Pinout & Package

Package: SOIC-14 (D package), 8.65 mm × 3.91 mm body, 1.27 mm pitch, RoHS-compliant, tape-and-reel packaging.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2444IDR and OPA2333PAIDR, the TLC2254AQDREP uniquely balances ultra-low power (140 µA total), rail-inclusive input range, and production-proven 850 µV VIO in a native quad SOIC-14 - making it optimal for cost-sensitive, battery-powered precision analog systems where speed is secondary to quiescent current and DC accuracy.

Availability

TLC2254AQDREP is available at Aetrix Electronics and suitable for portable medical sensors, industrial process monitoring, and remote environmental sensing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC2254AQDREP 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, embedded processing, and connectivity technologies with over 90 years of innovation in high-reliability components.

The TLC225x family was engineered for micropower, rail-to-rail precision amplification in battery-operated and high-impedance sensor signal chains - targeting medical, industrial, and automotive applications demanding extended temperature operation and low-noise performance.

FAQ

What is the maximum operating temperature range for the TLC2254AQDREP?

The TLC2254AQDREP is qualified for continuous operation from −40°C to +125°C, meeting automotive Q100 and industrial extended-temperature requirements. This rating is confirmed by JEDEC-standard qualification including biased 85/85 testing, temperature cycling, and HAST, ensuring reliability in under-hood or factory-floor environments where the TLC2254AQDREP is deployed.

Does the TLC2254AQDREP support single-supply operation with ground-referenced inputs?

Yes, the TLC2254AQDREP supports true single-supply operation: its common-mode input voltage range extends to VDD− (ground when VDD− = GND), and output swings within 10 mV of both rails. This allows direct interfacing with ground-referenced sensors and 5 V ADCs without level-shifting circuitry - a key design advantage confirmed in the datasheet's recommended operating conditions table for VDD = 5 V.

What is the typical input bias current specification for the TLC2254AQDREP?

The TLC2254AQDREP has a typical input bias current of 1 pA at 25°C, with a maximum of 60 pA across the full −40°C to +125°C range. This ultra-low value is achieved via Advanced LinCMOS™ input-stage design and is explicitly verified in the Electrical Characteristics tables for both 5 V and ±5 V supply conditions - making the TLC2254AQDREP suitable for piezoelectric, ion-selective, and high-value resistive sensor interfaces.

How does the noise performance of the TLC2254AQDREP compare to legacy micropower op-amps?

The TLC2254AQDREP delivers 19 nV/√Hz input voltage noise at 1 kHz - four times lower than prior-generation micropower CMOS op-amps like the TLC27L4. This improvement is documented in Figure 1 of the datasheet and confirmed across both 5 V and ±5 V supply conditions. The reduced noise enables higher-resolution measurements in low-frequency applications such as ECG and environmental sensing where the TLC2254AQDREP is commonly applied.

Is the TLC2254AQDREP pin-compatible with the standard TLC2254 or TLC2254A variants?

Yes, the TLC2254AQDREP uses the same SOIC-14 (D) package and identical pinout as the commercial-grade TLC2254 and TLC2254A, as shown in the "TLC2254, TLC2254A D PACKAGE (TOP VIEW)" diagram on page 2 of the datasheet. The 'Q' suffix denotes automotive-grade qualification (−40°C to +125°C), while 'REP' indicates enhanced manufacturing pedigree and DMS support - both implemented without altering pin assignment or footprint.