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

STMicroelectronics L2720D13TR

Name: L2720D13TR
Brand: STMicroelectronics
SKU: L2720D13TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L2720D13TR

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: L2720D13TR.pdf

Description:: IC OPAMP GP 2 CIRCUIT 16SO

Quantity:: RFQ Add To RFQ list

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Inventory:3,855

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Product details

Overview

L2720D13TR from STMicroelectronics is a dual-channel monolithic power operational amplifier in SO-16 narrow package, designed for high-current output stages in servo amplifiers and power supply regulation. It delivers 1 A DC output current per channel, operates from single (4–28 V) or split (±2–±14 V) supplies, and features ground-compatible inputs, low saturation voltage (0.3–1.5 V), and thermal shutdown at 145 °C - used in CD/VCR motor drive and automotive actuator circuits.

For engineers reviewing the L2720D13TR datasheet, L2720D13TR pinout, L2720D13TR application, or L2720D13TR equivalent, key selection criteria include output current capability (1 A), low dropout voltage under load, thermal shutdown behavior, common-mode input range (±Vs), and dual-channel isolation performance (60 dB channel separation at 1 kHz).

Technical Context

The L2720D13TR integrates two independent high-power op-amp sections on a single die, each with rail-to-rail input stage compatibility and Class-AB output stage enabling 1 A continuous output. Its internal architecture includes input clamping diodes, thermal sensing circuitry triggering shutdown at 145 °C, and matched gain-bandwidth product (1.2 MHz) across channels.

It supports both single-supply (4–28 V) and split-supply (±2–±14 V) operation with ±Vs common-mode input range and differential input voltage tolerance of ±Vs. Output swing is specified down to 0.3 V above ground (low-side) and 0.7 V below Vs (high-side) at 100 mA, degrading predictably to 1.5 V drop at 500 mA.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	1 A DC per channel - drives inductive loads like small DC motors without external boost stages.
Supply Voltage Range	Single: 4–28 V; Split: ±2–±14 V - enables direct integration into 5 V, 12 V, and 24 V industrial control rails.
Input Offset Voltage	10 mV max - limits static error in precision closed-loop servo positioning applications.
Slew Rate	2 V/µs - supports bandwidth-limited step response in motor current control loops up to ~300 kHz.
Thermal Shutdown	145 °C junction temperature - protects device during sustained overload or poor heatsinking in compact enclosures.
Channel Separation	60 dB at 1 kHz - ensures minimal crosstalk between dual channels driving independent actuators or feedback paths.
Common-Mode Rejection	66–84 dB at 1 kHz - maintains accuracy when amplifying signals referenced to noisy power rails.

Pinout & Package

Package: SO-16 narrow (body width 3.9 mm), surface-mount, JEDEC MS-012AC compliant, with 1.27 mm pitch and 8° maximum lead angle.

Pin/Terminal	Circuit Role	Design Meaning
1, 16	Output A / Output B	High-current push-pull outputs capable of sourcing/sinking 1 A continuously; require external heatsinking above 500 mA.
2, 15	Inverting Input A / B	Differential inputs with ±Vs common-mode range and integrated clamp diodes to supply rails.
3, 14	Non-inverting Input A / B	Ground-compatible inputs accepting signals down to –0.3 V; enable single-supply sensor interfacing.
4, 13	V_CC / V_EE	Positive and negative supply pins; support split or single-ended configuration depending on external wiring.
5, 12	Compensation A / B	External compensation terminals for stability tuning via capacitor-resistor network per channel.
6, 11	Shutdown A / B	Logic-level enable/disable inputs; pulled high internally, pulled low to disable output stage and reduce quiescent current.
7, 10	NC / NC	No-connect pins - left unconnected per datasheet; not internally bonded.
8, 9	GND / GND	Dual ground pins for improved thermal conduction and reduced ground bounce in high-current switching.

Key Features

Feature	Design Value
Low saturation voltage	0.3 V (low-side) and 0.7 V (high-side) at 100 mA - minimizes power loss and heat generation in linear mode operation.
Thermal shutdown protection	Automatic cutoff at 145 °C junction temperature - prevents irreversible damage during overcurrent or ambient overheating.
Ground-compatible inputs	Inputs accept signals down to –0.3 V relative to V_EE - allows direct interface with 0 V-referenced sensors or DACs in single-supply systems.
Clamp diodes on inputs	Integrated ESD and overvoltage protection diodes to V_CC/V_EE - eliminates need for external protection in moderate-noise environments.
Large differential input range	±V_S - enables robust operation with fast transient inputs without phase reversal or latch-up.

Applications

CD/VCR Motor Drive

Automotive Actuator Control

Use Scenario: Driving bidirectional spindle and sled motors in compact disc players and VCRs with analog speed and position feedback.

IC Role / Device Role / Timing Role: Dual-channel power op-amp providing current-mode motor winding control with fast transient response and thermal margin.

Use Value: 1 A output current and 2 V/µs slew rate enable precise torque control; low dropout voltage reduces heat in space-constrained optical assemblies.

Use Scenario: Controlling solenoids, fuel injectors, and HVAC damper actuators in 12 V automotive subsystems.

IC Role / Device Role / Timing Role: High-current buffer amplifier translating microcontroller PWM or DAC outputs into robust drive signals for inductive loads.

Use Value: Integrated clamp diodes and thermal shutdown meet automotive reliability requirements; ±Vs input range accommodates sensor offsets in noisy chassis-grounded systems.

Servo Amplifier Stage

Linear Power Supply Regulator

Use Scenario: Closed-loop position/velocity amplification in industrial stepper or DC servo systems using analog feedback from encoders or resolvers.

IC Role / Device Role / Timing Role: Final-stage power op-amp delivering regulated current to motor windings while rejecting supply ripple and noise.

Use Value: 66–84 dB CMRR and 60 dB channel separation preserve loop stability and minimize cross-coupling in multi-axis motion controllers.

Use Scenario: Adjustable linear regulator output stage for lab-grade bench supplies or embedded system auxiliary rails requiring low-noise, low-ripple outputs.

IC Role / Device Role / Timing Role: Pass element driver with external transistor, configured as high-gain error amplifier controlling series pass device.

Use Value: 10 mV input offset and 1.2 MHz GBW ensure tight regulation accuracy and fast load transient recovery without external compensation complexity.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-current power op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TCA0372DP1	Higher quiescent current (20 mA vs. 10 mA), lower output current (0.65 A), no thermal shutdown.	Less suited for sustained 1 A loads or thermally constrained PCBs; lacks fault protection.	Select only if thermal margin is ample and peak current ≤ 650 mA.
LM12CL	Single-channel, higher output current (1.5 A), TO-126 package, no shutdown, requires external compensation.	Not pin-compatible; needs redesign for dual-channel use; better for high-power single-axis systems.	Choose when single high-current channel suffices and board space allows through-hole mounting.

Compared with TCA0372DP1 and LM12CL, the L2720D13TR uniquely combines dual-channel integration, built-in thermal shutdown, ground-compatible inputs, and SO-16 surface-mount packaging - making it optimal for space-limited, safety-aware dual-actuator control where reliability and layout simplicity are critical.

Availability

L2720D13TR is available at Aetrix Electronics and suitable for CD/VCR motor drive, automotive actuator control, and servo amplifier applications requiring stable component supply and long-term industrial availability.

Supply support for L2720D13TR 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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The L2720D13TR belongs to ST's legacy power op-amp product line, engineered specifically for high-current linear amplification in electromechanical control systems where thermal resilience and dual-channel integration are essential.

FAQ

Is L2720D13TR still in active production?

No - the L2720D13TR is marked "Obsolete Product(s)" in its official STMicroelectronics datasheet (September 2002). It remains available through authorized legacy distributors and Aetrix Electronics' long-life inventory program with full traceability and extended lifecycle support documentation.

Can L2720D13TR operate from a single 5 V supply?

Yes - the L2720D13TR supports single-supply operation from 4 V to 28 V. At 5 V, it delivers usable output swing (≥1.5 V headroom) and maintains 10 mV input offset, but output current capability is derated due to thermal limits; continuous 1 A requires adequate PCB copper area or heatsinking.

What is the purpose of pins 7 and 10 (NC)?

Pins 7 and 10 are designated No-Connect in the official STMicroelectronics datasheet and are not internally bonded. They must remain unconnected on PCB layout; routing traces or vias to them may cause mechanical stress or unintended coupling and is strictly prohibited.

Does L2720D13TR require external compensation?

Yes - pins 5 and 12 are dedicated compensation terminals. Each channel requires an external RC network (typically 10–100 pF capacitor in series with 1–10 kΩ resistor) between compensation pin and output to ensure stability under varying load and gain conditions, as specified in Figure 1 of the datasheet.

L2720D13TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Amplifier Type:: General Purpose

Number of Circuits:: 2

Output Type:: -

Slew Rate:: 2V/µs

Gain Bandwidth Product:: 1.2 MHz

-3db Bandwidth:: -

Current - Input Bias:: 200 nA

Voltage - Input Offset:: 10 mV

Current - Supply:: 10mA

Current - Output / Channel:: 1.5 A

Voltage - Supply Span (Min):: 4 V

Voltage - Supply Span (Max):: 28 V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SO

L2720D13TR FAQ

1.How can I place an order for L2720D13TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L2720D13TR 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 L2720D13TR reliable?

The price and inventory of L2720D13TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L2720D13TR is usually 5 days.

3.What payment methods are accepted for L2720D13TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L2720D13TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L2720D13TR?

L2720D13TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L2720D13TR 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 L2720D13TR?

For technical support, including L2720D13TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L2720D13TR requirements.

6.How does Aetrix verify that L2720D13TR is sourced from the original manufacturer or authorized distributors?

All L2720D13TR 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 L2720D13TR meets industry standards.

7.What is the process for return or replacement of L2720D13TR?

All L2720D13TR units undergo pre-shipment inspection (PSI). If there is an issue with L2720D13TR, 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 L2720D13TR part is unused and in its original packaging.

Return procedure for L2720D13TR:

1.Submit a request within 90 days.

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

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