Texas Instruments TL031CP

Overview

TL031CP from Texas Instruments is a single-channel FET-input operational amplifier optimized for low-power, low-offset precision applications. It delivers 1.1 MHz unity-gain bandwidth, 2.9 V/μs positive slew rate (±15V), and 130 dB large-signal voltage gain at ±15V supply, with input offset voltage as low as 0.5 mV (typical) and 10¹² Ω input resistance - enabling high-fidelity signal conditioning in solar inverter feedback loops and motor drive current sensing.

For engineers reviewing the TL031CP datasheet, TL031CP pinout, TL031CP application, or TL031CP equivalent, this page provides verified electrical characteristics, validated 8-pin PDIP package mapping, confirmed FET-input architecture advantages over TL06x predecessors, and real-world design context for dual-supply precision amplification in industrial power electronics.

Technical Context

The TL031CP uses Texas Instruments' enhanced LinCMOS™ FET process to achieve micropower operation (250 μA max supply current per amplifier at ±15V) without sacrificing AC performance - delivering higher slew rate and bandwidth than TL06x while maintaining identical quiescent current. Its JFET input stage enables ultra-low input bias current (10–200 pA) and high input impedance, critical for interfacing with high-impedance sensors or low-level AC sources.

Designed for dual-supply operation, the TL031CP specifies common-mode input range from −11.5 V to +14 V (at ±15V), output swing to within 0.045 V of rails (RL = 10 kΩ), and stable unity-gain operation with 60° phase margin. It is not characterized for single-supply use; TI recommends TLC-series amplifiers for such applications.

Key Specifications

Pinout & Package

TL031CP is supplied in an 8-pin plastic DIP (PDIP) package measuring 9.81 mm × 9.43 mm, with through-hole mounting and standard 0.3-inch row spacing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar FET-input operational amplifier applications.

Compared with TL061CP and TL071CP, the TL031CP uniquely balances micropower consumption (250 μA), precision (1.5 mV V_IO), and speed (2.9 V/μs) - making it optimal for cost-sensitive industrial power control where both efficiency and accuracy matter.

Availability

TL031CP is available at Aetrix Electronics and suitable for solar inverter feedback, motor drive current sensing, and single-phase UPS control requiring stable component supply across extended production cycles.

Supply support for TL031CP 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 heritage in precision op-amps and industrial-grade signal chain solutions.

The TL03x family was engineered as an enhanced FET-input upgrade to the TL06x series - targeting low-power, high-impedance applications in renewable energy, motor control, and power conversion where DC accuracy and AC fidelity must coexist under tight thermal and power constraints.

FAQ

What is the maximum supply voltage rating for TL031CP?

The TL031CP has an absolute maximum supply voltage rating of ±18 V, with recommended operating range from ±5 V to ±15 V. Operation beyond ±15 V risks exceeding thermal limits and degrading long-term reliability, even if within absolute ratings. Always observe common-mode input voltage limits relative to the supply rails.

Does TL031CP support single-supply operation?

No - TL031CP is specified only for dual-supply operation. Its common-mode input range and output swing are defined relative to symmetric rails (e.g., ±5 V or ±15 V). For single-supply designs, Texas Instruments recommends the TLC27L1 or TLC2271 families, which feature rail-to-rail input/output and are characterized down to 3 V.

What is the input offset voltage specification for TL031CP at 70°C?

For TL031CP (C-suffix), the input offset voltage is guaranteed ≤4.5 mV over the full 0°C to 70°C temperature range. At 25°C, typical V_IO is 0.5 mV, with a temperature coefficient of 5.9 μV/°C - resulting in predictable, bounded drift across its operating envelope.

Can TL031CP replace TL061CP on an existing PCB?

Yes - TL031CP uses the same 8-pin PDIP package and identical pinout as TL061CP (NC, IN−, IN+, VCC−, NC, OUT, VCC+, NC). No layout changes are needed; however, verify that the improved slew rate and bandwidth do not induce instability in existing compensation networks.

What is the typical input capacitance of TL031CP?

The TL031CP has a typical input capacitance of 4 pF per input terminal (IN+ and IN−), measured at 25°C. This low value minimizes phase shift in high-frequency feedback paths and supports stable operation with small external compensation capacitors.