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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TL061ACDT

Name: TL061ACDT
Brand: STMicroelectronics
SKU: TL061ACDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TL061ACDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TL061ACDT.pdf

Description:: IC OPAMP JFET 1 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:8,740

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Product details

Overview

TL061ACDT from STMicroelectronics is a low-power JFET-input single 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 gain-bandwidth product, ±15 V supply operation, and 200 µA quiescent current-enabling rail-to-rail compatible output swing up to ±13.5 V with 10 kΩ load in sensor front-ends and active filters.

For engineers reviewing the TL061ACDT datasheet, TL061ACDT pinout, TL061ACDT application, or TL061ACDT equivalent, key selection criteria include input bias current (≤200 pA), input offset voltage (≤7.5 mV), common-mode range extending to V_CC+, and SO-8 package thermal resistance (125 °C/W) for thermally constrained PCB layouts.

Technical Context

The TL061ACDT uses a monolithic JFET-bipolar hybrid process to achieve high input impedance (10¹² Ω) and low input bias current while maintaining stable DC performance across temperature. Its internal frequency compensation ensures unity-gain stability without external components.

It supports dual-supply operation from ±3 V to ±18 V, with common-mode input range spanning −12 V to +15 V (at ±15 V supplies) and output swing of ±13.5 V into 10 kΩ-making it suitable for transducer amplification where input signals approach supply rails.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Current	200–250 µA - enables battery-powered or energy-harvesting systems with multi-year runtime
Slew Rate	3.5 V/µs - supports 100 kHz full-power bandwidth for 10 V_PP signals in active filter stages
Input Offset Voltage	≤7.5 mV at +25°C - limits DC error to <0.075% of 10 V full-scale in 12-bit ADC front-ends
Input Bias Current	≤200 pA - preserves signal integrity in high-impedance pH or photodiode sensor interfaces
Gain-Bandwidth Product	1 MHz - allows stable closed-loop gain of 100 up to 10 kHz in instrumentation amplifier configurations
Common-Mode Range	−12 V to +15 V (±15 V supply) - accepts inputs beyond ground in single-supply derived rails
Output Swing	±13.5 V into 10 kΩ - delivers >90% of rail-to-rail dynamic range for driving SAR ADC references

Pinout & Package

TL061ACDT is supplied in an SO-8 surface-mount plastic micropackage (ECOPACK® compliant), measuring 4.90 mm × 6.00 mm × 1.25 mm (max height), with 1.27 mm lead pitch and thermal resistance R_thJA = 125 °C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	Offset Null 1	Connects to potentiometer wiper for manual input offset trimming; required only in precision DC-coupled applications
2	Inverting Input	High-impedance JFET node; sensitive to layout-induced leakage-requires guard ring in sub-pA designs
3	Non-inverting Input	Matches Pin 2 in bias current and offset; used for unity-gain buffers or differential pair inputs
4	V_CC−	Negative supply terminal; must be decoupled within 1 cm of pin using ≥100 nF ceramic capacitor
5	Offset Null 2	Second end of nulling potentiometer; tied to V_CC− when trimming is not used
6	Output	Class-AB output stage capable of sourcing/sinking ±20 mA; short-circuit protected indefinitely
7	V_CC+	Positive supply terminal; shares same decoupling requirement as Pin 4
8	N.C.	No internal connection; electrically isolated-may be left floating or grounded for mechanical stability

Key Features

Feature	Design Value
Very low power consumption	200 µA supply current enables use in always-on sensor nodes with <1 µW idle power per channel
High input impedance	10¹² Ω JFET input minimizes loading on piezoelectric or capacitive sensors above 100 MΩ source impedance
Output short-circuit protection	Indefinite short-to-rail tolerance eliminates need for external current-limiting resistors in test equipment outputs
Latch-up free operation	Guaranteed immunity to CMOS latch-up under overvoltage or ESD stress-critical in mixed-signal industrial I/O modules
Wide common-mode range	Extends to V_CC+ allows direct interfacing with unbuffered DAC outputs or op-amp-based level shifters

Applications

Strain Gauge Signal Conditioning

Thermocouple Amplifier Front-End

Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from metal foil strain gauges in load cells and pressure transducers.

IC Role / Device Role / Timing Role: First-stage non-inverting amplifier with gain ≥100, configured with matched feedback resistors for ratiometric accuracy.

Use Value: Low input bias current (<200 pA) prevents bridge imbalance errors; 7.5 mV max offset contributes <0.075% FS error before calibration.

Use Scenario: Cold-junction compensation and linearization of K-type thermocouple outputs in HVAC controllers and industrial ovens.

IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage, paired with RTD-based reference and programmable gain.

Use Value: Common-mode range to V_CC+ accommodates thermocouple leads referenced to system ground without level-shifting circuitry.

Active Low-Pass Filter (10 kHz)

Photodiode Transimpedance Amplifier

Use Scenario: 4th-order Sallen-Key low-pass filtering of motor current sense signals to suppress PWM switching noise before ADC sampling.

IC Role / Device Role / Timing Role: Unity-gain buffer and second-order stage in cascaded filter topology, operating at 10 V_PP swing.

Use Value: 3.5 V/µs slew rate supports full-scale 10 kHz sine wave without distortion; 1 MHz GBW ensures phase margin >60° at cutoff.

Use Scenario: Converting nanoampere photocurrent from UV-enhanced silicon photodiodes in flame detection circuits.

IC Role / Device Role / Timing Role: Transimpedance amplifier with 10 MΩ feedback resistor and 2 pF compensation capacitance.

Use Value: Input bias current ≤200 pA avoids dark-current-induced baseline drift; 42 nV/√Hz noise floor maintains SNR >60 dB at 1 kHz.

Equivalent & Alternatives

The following parts are listed as comparable options for similar JFET-input op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TL071CDT	Lower input offset (3 mV typ), higher slew rate (16 V/µs), but 2.8 mA supply current	Unsuitable for battery-powered devices; preferred in audio preamps requiring wide bandwidth	Select when speed and precision outweigh power constraints
CA3140EZ	BiMOS input (1 pA I_ib), wider supply range (±18 V), no internal compensation	Requires external compensation capacitor; better for ultra-high-Z pH probes but less stable in unity-gain	Select for femtoampere-level sensor interfaces where external tuning is acceptable

Compared with TL071CDT and CA3140EZ, TL061ACDT uniquely balances sub-250 µA quiescent current, 3.5 V/µs slew rate, and SO-8 thermal performance-making it optimal for space-constrained, low-power industrial signal chains where moderate speed suffices.

Availability

TL061ACDT is available at Aetrix Electronics and suitable for strain gauge interfaces, thermocouple front-ends, active filter stages, and photodiode transimpedance amplifiers requiring stable component supply across extended temperature ranges (0°C to +70°C).

Supply support for TL061ACDT 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The TL061 belongs to ST's legacy JFET-input op-amp product line, engineered for robustness and cost efficiency in general-purpose analog signal conditioning-prioritizing low power, rail-compatible inputs, and production-grade consistency over ultra-low-noise or high-speed specialization.

FAQ

What is the maximum recommended supply voltage for TL061ACDT?

The absolute maximum supply voltage is ±18 V, but the specified operating range is ±3 V to ±18 V. For reliable long-term operation at +70°C ambient, ST recommends limiting total supply span to ≤30 V (e.g., ±15 V or +18 V/−12 V) to stay within 680 mW power dissipation limit and avoid thermal runaway in SO-8 packages.

Does TL061ACDT require external compensation?

No. TL061ACDT features internal frequency compensation optimized for unity-gain stability with capacitive loads ≤100 pF. External compensation is unnecessary for standard inverting/non-inverting configurations but may be needed for gains <1 (e.g., attenuators) or when driving >1 nF cables-verified via phase margin measurement at target closed-loop gain.

Can TL061ACDT drive a 10 kΩ load to ±13.5 V with ±15 V supplies?

Yes. Electrical characteristics specify ±13.5 V minimum output swing into 10 kΩ at ±15 V supplies and +25°C. At full temperature range (0°C to +70°C), output swing remains ≥±13 V due to guaranteed large-signal voltage gain ≥3 V/mV and low output impedance (<200 Ω), enabling direct interface with 12-bit SAR ADC references.

Is the NC pin (Pin 8) safe to ground in PCB layout?

Yes. Pin 8 is internally unconnected with no bond wire or die attachment. ST's mechanical drawings confirm it is electrically isolated. Grounding Pin 8 improves mechanical rigidity and reduces solder void risk in reflow profiles-no electrical impact on offset, noise, or stability has been observed in validated board designs.

TL061ACDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: J-FET

Number of Circuits:: 1

Output Type:: -

Slew Rate:: 3.5V/µs

Gain Bandwidth Product:: 1 MHz

-3db Bandwidth:: -

Current - Input Bias:: 30 pA

Voltage - Input Offset:: 3 mV

Current - Supply:: 200µA

Current - Output / Channel:: 20 mA

Voltage - Supply Span (Min):: 6 V

Voltage - Supply Span (Max):: 36 V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

TL061ACDT FAQ

1.How can I place an order for TL061ACDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TL061ACDT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TL061ACDT reliable?

The price and inventory of TL061ACDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL061ACDT is usually 5 days.

3.What payment methods are accepted for TL061ACDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL061ACDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TL061ACDT?

TL061ACDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TL061ACDT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TL061ACDT?

For technical support, including TL061ACDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL061ACDT requirements.

6.How does Aetrix verify that TL061ACDT is sourced from the original manufacturer or authorized distributors?

All TL061ACDT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TL061ACDT meets industry standards.

7.What is the process for return or replacement of TL061ACDT?

All TL061ACDT units undergo pre-shipment inspection (PSI). If there is an issue with TL061ACDT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TL061ACDT part is unused and in its original packaging.

Return procedure for TL061ACDT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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