Texas Instruments TLC27M7CD

Overview

TLC27M7CD from Texas Instruments is a dual precision LinCMOS operational amplifier optimized for single-supply operation, featuring 500 µV max input offset voltage at 25°C, 32 nV/√Hz input noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V across 0°C to 70°C and is used in battery-powered sensor signal conditioning, portable medical instrumentation, and low-power analog front-ends.

For engineers reviewing the TLC27M7CD datasheet, TLC27M7CD pinout, TLC27M7CD application, or TLC27M7CD equivalent, key selection criteria include its trimmed offset voltage grade, wide supply range, low quiescent current (210–560 µA), high input impedance (10¹² Ω), and compatibility with single-supply systems requiring input common-mode range extending below ground.

Technical Context

The TLC27M7CD implements silicon-gate LinCMOS process technology to achieve superior offset voltage stability over time and temperature-0.1 µV/month typical drift-and eliminates latch-up susceptibility. Its input stage supports common-mode voltages down to −0.2 V (at VDD = 5 V), enabling true single-supply transducer interfacing without level-shifting circuitry.

Each amplifier provides unity-gain bandwidth of 525 kHz (VDD = 5 V), slew rate of 0.40 V/µs, and phase margin of 40°, ensuring stable operation with capacitive loads up to 20 pF. Internal ESD protection meets MIL-STD-883C, Method 3015.2 (2000 V).

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), 8-pin small-outline integrated circuit with standard JEDEC outline and 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 TLC27M7ID, the TLC27M7CD offers tighter offset control at room temperature and lower cost for commercial-grade applications; versus TLV2462CD, it trades bandwidth and rail-to-rail input for significantly lower power and proven long-term offset stability in DC measurement systems.

Availability

TLC27M7CD is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, and remote environmental data loggers requiring stable component supply across production lifecycles.

Supply support for TLC27M7CD 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 personal electronics markets.

The TLC27Mx series was designed as a LinCMOS-based dual op-amp family targeting precision, low-power, single-supply applications - especially where offset voltage stability, input impedance, and supply flexibility outweigh raw speed requirements.

FAQ

What is the maximum input offset voltage specification for TLC27M7CD over its full operating temperature range?

The TLC27M7CD has a maximum input offset voltage of 1500 µV across the full 0°C to 70°C operating range, with a tighter 500 µV maximum specified at 25°C. This graded specification reflects typical LinCMOS drift behavior and is confirmed in the Electrical Characteristics tables for VDD = 5 V and VDD = 10 V conditions. Designers should apply worst-case 1500 µV for system error budgeting in temperature-varying environments.

Can TLC27M7CD operate from a single 3.3 V supply while maintaining rail-to-rail output swing?

Yes, the TLC27M7CD is fully specified for 3 V minimum supply operation and delivers rail-to-rail output swing - VOH ≥ 3.0 V and VOL ≤ 50 mV at VDD = 3.3 V and TA = 0°C to 70°C. Its output stage is designed to source/sink current into loads down to the negative rail, making it suitable for direct interfacing with 3.3 V SAR ADCs without external level-shifting circuitry.

Does TLC27M7CD support input voltages below ground, and if so, how far?

Yes, the TLC27M7CD supports input common-mode voltages down to −0.2 V below GND when VDD = 5 V, and down to 0 V below GND when VDD = 4 V or lower (per recommended operating conditions). This feature is enabled by its P-channel input differential pair and allows direct connection of grounded-referenced sensors such as thermocouples or strain gauges without clamping diodes or level-shifters.

What is the typical input bias current of TLC27M7CD, and why does it matter in high-impedance circuits?

The typical input bias current of TLC27M7CD is 0.6 pA at 25°C, with a maximum of 60 pA over temperature. This ultra-low value minimizes voltage drop across high-impedance sources (e.g., >100 MΩ pH electrodes or piezoelectric sensors), preventing significant measurement error or baseline shift. In contrast, bipolar-input op-amps typically exhibit bias currents in the nanoampere range - six orders of magnitude higher - which would dominate error budgets in such applications.

Is TLC27M7CD pin-compatible with other devices in the TLC27Mx family, such as TLC27M2CD?

Yes, all TLC27Mx dual op-amps - including TLC27M2CD, TLC27M7CD, TLC27M7ID, and TLC27M7MD - share identical SOIC-8 (D), PDIP-8 (P), and TSSOP-8 (PW) pinouts. The only differences lie in internal trimming (offset voltage grade), temperature rating (C/I/M suffix), and absolute maximum ratings (e.g., supply voltage limits). This allows drop-in replacement during design iteration or qualification without PCB changes.