Texas Instruments TLC27L7IDG4

Overview

TLC27L7IDG4 from Texas Instruments is a precision dual CMOS operational amplifier optimized for ultra-low-power, single-supply operation in sensor signal conditioning and industrial monitoring systems. It delivers 1 mV max input offset voltage (25°C), 10¹² Ω input impedance, 95 μW typical power dissipation at 5 V, and rail-to-rail output swing down to the negative rail - enabling direct interfacing with low-voltage transducers in battery-powered field instruments.

For engineers reviewing the TLC27L7IDG4 datasheet, TLC27L7IDG4 pinout, TLC27L7IDG4 application, or TLC27L7IDG4 equivalent, key selection criteria include its guaranteed 1 mV VIO over −40°C to +85°C, ultra-low bias current (<60 pA typ), extended common-mode range (−0.2 V to 3.5 V at 5 V supply), and SOIC-8 packaging compatible with high-density PCB layouts.

Technical Context

The TLC27L7IDG4 uses Texas Instruments' LinCMOS™ silicon-gate process to achieve exceptional DC precision and stability, including 0.1 μV/month input offset drift and 1.1 μV/°C temperature coefficient. Its dual-channel architecture supports independent signal paths with matched gain and phase characteristics.

Designed for single-supply operation, it features a common-mode input voltage range extending 0.2 V below ground and an output that swings to the negative rail - eliminating need for level-shifting circuitry in 3–16 V systems. ESD protection up to 2000 V (MIL-STD-883C) ensures robustness in handling and field deployment.

Key Specifications

Pinout & Package

Package: SOIC-8 (DG4 suffix), 3.9 mm × 4.9 mm body, 1.27 mm pitch, surface-mount.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2772IDR and OPA2333AIDR, the TLC27L7IDG4 uniquely balances sub-millivolt DC precision, nanoampere-level input bias, and microwatt power in a simple SOIC-8 package - making it optimal for cost-sensitive, battery-operated industrial transmitters where long-term calibration stability outweighs raw speed or zero-drift perfection.

Availability

TLC27L7IDG4 is available at Aetrix Electronics and suitable for pressure transmitter design, temperature sensor signal conditioning, flow meter analog front-ends, and smoke detector electronics requiring stable component supply across extended production lifecycles.

Supply support for TLC27L7IDG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The TLC27Lx family was designed specifically for ultra-low-power, high-precision analog signal conditioning in battery-operated and remote industrial sensor systems - emphasizing long-term offset stability, rail-compatible operation, and robustness in harsh environments.

FAQ

What is the maximum input offset voltage specification for TLC27L7IDG4 over its full operating temperature range?

The TLC27L7IDG4 has a maximum input offset voltage of 2000 µV over the −40°C to +85°C industrial temperature range. At 25°C, the limit is tighter: 1000 µV. This specification is verified per TI's SLOS052E datasheet Section 5.8 and applies specifically to the I-suffix grade in SOIC-8 packaging. The value reflects worst-case device variation under recommended operating conditions (VDD = 5 V).

Does TLC27L7IDG4 support true single-supply operation with input signals below ground?

Yes, the TLC27L7IDG4 supports true single-supply operation with its common-mode input voltage range extending to −0.2 V (at VDD = 5 V), as specified in Section 5.3 of the datasheet. This allows direct interfacing with transducers whose outputs may dip slightly below the system ground reference - a critical capability for bridge-based pressure and load cell sensors. The I-suffix grade maintains this feature across −40°C to +85°C.

What is the typical supply current for TLC27L7IDG4 at 25°C and 5 V supply?

The typical supply current for TLC27L7IDG4 is 34 µA at 25°C and VDD = 5 V, per Section 5.8 Electrical Characteristics (I-suffix, C-suffix data). This represents total current for both amplifiers under no-load conditions. At 85°C, the maximum increases to 26 µA, confirming its suitability for low-power, thermally constrained designs such as sealed environmental sensors.

Is TLC27L7IDG4 pin-compatible with other devices in the TLC27Lx family?

Yes, TLC27L7IDG4 is pin-compatible with all TLC27Lx dual op amps in SOIC-8 (DG4) packaging, including TLC27L2IDG4, TLC27L2AIDG4, and TLC27L2BIDG4. Pin configuration (Table 4-1) and footprint are identical across grades. However, electrical performance differs - notably VIO (1 mV vs 10 mV), bias current, and temperature range - so functional substitution requires validation against system-level accuracy and drift requirements.

What package type does TLC27L7IDG4 use, and what are its key mechanical dimensions?

TLC27L7IDG4 uses the SOIC-8 (DG4) package: 3.9 mm × 4.9 mm body size, 1.27 mm lead pitch, and 1.75 mm maximum height. It complies with JEDEC MS-012 standards and is compatible with standard reflow soldering profiles. The "DG4" suffix explicitly denotes this narrow-body SOIC variant, distinguishing it from PDIP (P), SOP (PS), or TSSOP (PW) options listed in TI's device information table.