Texas Instruments TL061CP

Overview

TL061CP from Texas Instruments is a single-channel, low-power JFET-input operational amplifier designed for precision analog signal conditioning in cost-sensitive industrial and consumer systems. It delivers 3.5 V/μs slew rate, 1 MHz unity-gain bandwidth, 200 μA typical supply current per amplifier, and ±11 V common-mode input range extending to V_CC+. It is commonly used in sensor front-ends and audio preamplifier stages where low input bias current (<200 pA) and high input impedance (>10¹² Ω) are critical.

For engineers reviewing the TL061CP datasheet, TL061CP pinout, TL061CP application, or TL061CP equivalent, key selection considerations include its JFET-input architecture for ultra-low bias current, SOIC-8 or PDIP-8 package options, rail-to-rail output swing capability (±10 V at ±15 V supplies), and guaranteed operation from 0°C to 70°C across the TL061C grade.

Technical Context

The TL061CP employs a JFET-input differential pair followed by a high-gain Darlington output stage, enabling high input impedance and low input bias current while maintaining stable unity-gain compensation. Its internal frequency compensation ensures unconditional stability with capacitive loads up to 100 pF without external compensation.

It operates from dual supplies of ±5 V to ±15 V, supports common-mode inputs up to V_CC+, and features output short-circuit protection. The device exhibits 80 dB minimum CMRR and 80 dB minimum PSRR at 25°C, making it suitable for DC-coupled instrumentation and filtering applications requiring moderate bandwidth and low power.

Key Specifications

Pinout & Package

TL061CP is available in 8-pin PDIP (Plastic Dual In-line Package), measuring 9.59 mm × 7.94 mm. This through-hole package supports manual prototyping and legacy PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL071CP and LM358N, the TL061CP uniquely balances ultra-low input bias current, rail-inclusive common-mode range, and sub-mA quiescent power-making it optimal for precision, low-power analog signal chains where bipolar or high-speed alternatives introduce unacceptable trade-offs.

Availability

TL061CP is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable audio preamplifiers, and power supply monitoring circuits requiring stable component supply across extended production lifecycles.

Supply support for TL061CP 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-amp design and manufacturing.

The TL061CP belongs to TI's industry-standard TL06x JFET-input op-amp family, engineered for cost-sensitive applications demanding low power, high input impedance, and robust ESD performance (1.5 kV HBM).

FAQ

What is the maximum supply voltage rating for TL061CP?

The TL061CP has an absolute maximum supply voltage rating of ±18 V across V_CC+ and V_CC−. However, its recommended operating range is ±5 V to ±15 V. Operating beyond ±15 V may degrade long-term reliability or exceed thermal limits, especially in PDIP packages with higher junction-to-ambient resistance (85 °C/W). Always observe derating curves in the datasheet for ambient temperature extremes.

Does TL061CP support rail-to-rail input or output?

The TL061CP supports rail-to-rail input common-mode range - specifically, its inputs operate from V_CC− + 4 V up to V_CC+, meaning it accepts signals at the positive rail (V_CC+). Its output swings to within ~1.5 V of each rail under 10 kΩ load (±10 V with ±15 V supplies), so it is not rail-to-rail output. For true rail-to-rail I/O, consider newer alternatives like the TLV2461.

Can TL061CP be used in single-supply configurations?

Yes, TL061CP can operate from a single supply (e.g., +15 V and ground) by biasing the inputs at mid-supply using resistive dividers or active references. Its common-mode input range includes V_CC+, allowing the non-inverting input to be set near V_CC+/2. Output swing remains asymmetric (0 V to ~13.5 V), so proper level-shifting and AC coupling may be required for full dynamic range utilization.

What is the purpose of the NC pins on TL061CP?

Pins 1, 5, and 8 on the TL061CP PDIP package are No Connect (NC) terminals - they are not bonded to the die and serve no electrical function. They must remain unconnected in PCB layout and schematic design. Leaving them floating or tying them to ground/voltage violates the device's internal isolation and may induce noise or parasitic coupling; TI explicitly states these pins are "Do not connect" in the official pin function table.

How does TL061CP compare to TL081CP in terms of noise performance?

The TL061CP specifies 30 nV/√Hz typical input voltage noise density at 1 kHz, which is lower than the TL081CP's 18 nV/√Hz - but this comparison is misleading because TL081CP uses a different input stage (higher bias current, lower impedance) and is optimized for speed, not low-noise. TL061CP's lower noise arises from its JFET architecture and lower 1/f corner frequency, making it preferable for DC- and low-frequency precision applications where bias current dominates error budgets.