Texas Instruments TLC27L2MDG4

Overview

TLC27L2MDG4 from Texas Instruments is a precision dual CMOS operational amplifier designed for low-power, single-supply sensor signal conditioning in extended-temperature industrial and military systems. It delivers 10 mV max input offset voltage at 25°C, ultra-low 34 µA typical supply current (VDD = 5 V), and rail-to-rail output swing down to the negative rail - enabling direct interfacing with transmitters and battery-powered field instrumentation.

For engineers reviewing the TLC27L2MDG4 datasheet, TLC27L2MDG4 pinout, TLC27L2MDG4 application, or TLC27L2MDG4 equivalent, key selection criteria include its −55°C to +125°C operating range, LinCMOS™ input impedance of 10¹² Ω, input common-mode range extending to GND, and compatibility with 4–16 V supplies in harsh environments.

Technical Context

The TLC27L2MDG4 uses Texas Instruments' silicon-gate LinCMOS™ process to achieve stable input offset voltage (10 mV max, 1.4 µV/°C drift over −55°C to +125°C) and femtoamp-level input bias currents (≤60 pA typ at 25°C). Its architecture supports single-supply operation with common-mode input voltage range including the negative rail (0 V to 3.5 V at VDD = 5 V, −55°C to +125°C).

It provides 50 V/mV large-signal voltage gain, 85 kHz unity-gain bandwidth, and 34° phase margin at 25°C - optimized for stable DC-coupled amplification and low-frequency active filtering in transmitter front-ends without external compensation.

Key Specifications

Pinout & Package

Package: SOIC-8 (D), 3.90 mm × 4.90 mm body, 1.27 mm pitch, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2333MDRG4 and LM2904MWX/NOPB, the TLC27L2MDG4 uniquely balances military-grade temperature range, ultra-low power, and LinCMOS™ high-impedance input - making it optimal for long-life, high-reliability field transmitters where zero-drift isn't required but GND-referenced input and 34 µA operation are critical.

Availability

TLC27L2MDG4 is available at Aetrix Electronics and suitable for pressure transmitter calibration, temperature sensor signal conditioning, and flow metering systems requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TLC27L2MDG4 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 industrial, automotive, and communications markets.

The TLC27Lx family was engineered for precision, low-power, single-supply operation in sensor interface and field transmitter applications - emphasizing input offset stability, rail-to-rail output, and extended temperature reliability.

FAQ

What is the maximum operating temperature range for the TLC27L2MDG4?

The TLC27L2MDG4 is rated for continuous operation from −55°C to +125°C, meeting military-grade temperature specifications per its M-suffix designation. This range is validated across all electrical parameters in the datasheet, including input offset voltage (12 mV max over full range), supply current (14–30 µA), and common-mode input voltage (0 V to 3.5 V at VDD = 5 V). The TLC27L2MDG4 maintains functional integrity under thermal cycling and sustained high-temperature exposure typical in avionics and downhole equipment.

Does the TLC27L2MDG4 support true single-supply operation with input signals at ground potential?

Yes, the TLC27L2MDG4 supports true single-supply operation with input common-mode voltage extending to the negative rail (GND). At VDD = 5 V and −55°C to +125°C, its specified VICR is 0 V to 3.5 V - meaning both inputs can be biased at 0 V without phase reversal or increased offset. This enables direct connection to grounded sensors like strain gauges or thermocouples without level-shifting circuitry, a key advantage over standard rail-to-rail input op-amps that require ≥100 mV headroom below V−.

What is the typical supply current consumption of the TLC27L2MDG4 at 5 V and 25°C?

The TLC27L2MDG4 draws 34 µA typical supply current (IDD) at VDD = 5 V and TA = 25°C, with a maximum of 46 µA across −55°C to +125°C. This ultra-low quiescent current enables multi-year battery operation in 2-wire 4–20 mA loop-powered transmitters and portable environmental monitors. The dual-amplifier design consumes only 17 µA per channel - significantly lower than bipolar alternatives like LM2904 (360 µA) or even many CMOS comparators.

Can the TLC27L2MDG4 drive a 1 MΩ load while maintaining rail-to-rail output swing?

Yes, the TLC27L2MDG4 guarantees rail-to-rail output swing into a 1 MΩ load: low-level output voltage (VOL) is ≤50 mV above GND, and high-level output voltage (VOH) reaches ≥3.2 V at VDD = 5 V and 25°C. This performance holds across the full military temperature range (−55°C to +125°C), with VOL remaining ≤50 mV and VOH ≥3.0 V. The specification is verified under no-load conditions per datasheet Section 5.4, confirming usability in high-impedance ADC input buffering and precision voltage follower applications.

Is the TLC27L2MDG4 pin-compatible with other devices in the TLC27Lx family?

Yes, the TLC27L2MDG4 shares identical SOIC-8 (D) package pinout and footprint with all TLC27Lx dual op-amps, including TLC27L2CDR, TLC27L2IDR, TLC27L2ACDR, and TLC27L7MDR. Pin functions - 1IN+, 1IN−, 1OUT, GND, 2IN+, 2IN−, 2OUT, VDD - are consistent across the family. This allows drop-in replacement during design iteration or qualification, provided system-level requirements (e.g., offset voltage, temperature range, supply current) align with the selected variant's specifications.