Texas Instruments TLC27M4ACN

Overview

TLC27M4ACN from Texas Instruments is a LinCMOS™ precision quad operational amplifier optimized for low-power, high-input-impedance analog signal conditioning in industrial and test equipment. It delivers ±5 mV max input offset voltage at 25°C, ±0.6 µV/°C drift, 32 nV/√Hz input noise at 1 kHz, rail-to-rail output swing to negative rail, and operates from 4 V to 16 V across −40°C to 85°C.

For engineers reviewing the TLC27M4ACN datasheet, TLC27M4ACN pinout, TLC27M4ACN application, or TLC27M4ACN equivalent, this device is selected for precision sensor interfacing, multiplexed data acquisition, and analog I/O modules where low quiescent current (120 µA per two amplifiers), high CMRR (65–80 dB), and ESD-protected inputs are critical design requirements.

Technical Context

The TLC27M4ACN uses LinCMOS™ process technology to achieve bipolar-like speed with MOSFET-level input impedance (6 TΩ typ) and ultra-low bias currents (±10 pA typ at 25°C). Its architecture supports single-supply operation with common-mode input range extending to −0.2 V below ground and output swing to the negative rail.

It features internal ESD protection and latch-up immunity, enabling robust deployment in programmable logic controllers and motor control feedback loops. The device is specified for 0–70°C (C-suffix), −40–85°C (I-suffix), and −55–125°C (M-suffix) temperature grades - the TLC27M4ACN is the I-grade variant in PDIP-14 package.

Key Specifications

Pinout & Package

Package: Plastic DIP (PDIP)-14, 19.3 mm × 6.35 mm, through-hole mounting with 0.3-inch row spacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC27M4BCN and TLV2464CDR, the TLC27M4ACN offers the best balance of low offset (±5 mV), industrial temperature range (−40°C to 85°C), through-hole PDIP reliability, and proven ESD robustness - making it optimal for legacy-compatible, maintenance-sensitive industrial hardware.

Availability

TLC27M4ACN is available at Aetrix Electronics and suitable for multiplexed data acquisition systems, programmable logic controllers, analog I/O modules, test equipment, and motor drive control circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC27M4ACN 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 experience in precision op-amps and industrial-grade components.

The TLC27Mxx family was designed specifically for high-accuracy, low-power analog signal conditioning in harsh industrial environments - emphasizing offset stability, input impedance, and ruggedness over raw speed.

FAQ

What is the maximum operating temperature range for the TLC27M4ACN?

The TLC27M4ACN is rated for −40°C to +85°C operation, corresponding to the 'I' temperature suffix. This range is validated per TI's Recommended Operating Conditions and supported by electrical characteristics tables for both 5 V and 10 V supplies across the full span. The device maintains ±5 mV input offset voltage and 65–80 dB CMRR within this range, making it suitable for industrial control cabinets and outdoor instrumentation enclosures.

Does the TLC27M4ACN support single-supply operation with input signals near ground?

Yes, the TLC27M4ACN supports true single-supply operation with its common-mode input voltage range extending to −0.2 V below ground (VDD = 5 V) and output swing to the negative rail. This allows direct interfacing with sensors whose outputs reference ground, such as bridge-based pressure transducers or current-sense amplifiers, without level-shifting circuitry - a key advantage confirmed in Section 6.3 and Figure 6-8 of the datasheet.

What is the typical supply current consumption of the TLC27M4ACN?

The TLC27M4ACN draws 120 µA per two amplifiers at 25°C and VDD = 5 V, equating to ~240 µA for all four op-amps under static conditions. This value increases to 160 µA per two amps at 70°C. Total IDD remains below 350 µA across the full −40°C to 85°C range, enabling use in energy-conscious industrial nodes and battery-buffered data loggers where quad-channel precision is required.

Is the TLC27M4ACN pin-compatible with other devices in the TLC27Mxx family?

Yes, the TLC27M4ACN shares identical PDIP-14 pinout and footprint with all TLC27Mxx variants including TLC27M4CN, TLC27M4BCN, and TLC27M9CN. Pin functions - from 1OUT through 4OUT and dual supply rails - are fully consistent across the family, allowing drop-in substitution based on offset voltage grade and temperature range without PCB redesign.

What packaging options are available for the TLC27M4ACN?

The TLC27M4ACN is offered exclusively in the Plastic DIP (PDIP)-14 package (19.3 mm × 6.35 mm), as confirmed in Table 3-1 and the orderable information section of the datasheet. Unlike the broader TLC27M4x series, the 'ACN' suffix denotes this specific I-grade, PDIP-only variant - no SOIC, TSSOP, or SOP versions carry the 'ACN' designation.