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Texas Instruments TL3474AIN
- Part No.:
- TL3474AIN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL3474AIN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,667
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Product details
Overview
TL3474AIN from Texas Instruments is a quad, high-slew-rate, single-supply operational amplifier with 4.5MHz gain-bandwidth product, 3mV max input offset voltage (A-grade), and rail-to-rail input common-mode range extending to ground (VCC−). It operates from 4V to 36V supply and delivers ±80mA output current-ideal for low-side current sensing and SAR ADC reference buffering in industrial programmable logic controllers.
For engineers reviewing the TL3474AIN datasheet, TL3474AIN pinout, TL3474AIN application, or TL3474AIN equivalent, key selection criteria include its wide single-supply voltage range (4–36V), guaranteed 3mV max VIO at −40°C to +105°C, 10V/μs positive slew rate, and PDIP-14 package compatibility with legacy through-hole layouts.
Technical Context
The TL3474AIN implements a bipolar-input, four-channel op-amp architecture optimized for single-supply operation: its input stage accepts signals down to VCC− (ground), enabling direct interfacing with sensors and ADCs without level-shifting. It features internal short-circuit protection and exhibits 540GΩ differential input resistance with 10pF input capacitance.
Designed for robustness in industrial environments, the device maintains 85kHz power bandwidth at 20Vpp output into 2kΩ, achieves 0.02% THD at 10kHz, and provides 10.8nV/√Hz input voltage noise-critical for precision signal conditioning in multiplexed data-acquisition systems and test equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - supports stable unity-gain operation up to 4.5MHz or closed-loop gains of 10 at 450kHz. |
| Input offset voltage (max) | 3mV - ensures ≤3mV DC error in precision DC-coupled amplification (e.g., current-sense amplifiers). |
| Supply voltage range | 4V to 36V single supply - eliminates need for dual-rail supplies in battery-powered or 24V industrial systems. |
| Slew rate (SR+) | 10V/μs - enables accurate reproduction of fast transients (e.g., pulse-width modulated signals) without distortion. |
| Common-mode input range | Includes VCC− (ground) - allows direct connection of grounded sensor outputs without external biasing networks. |
| Output short-circuit current | ±75mA - sustains fault conditions without latch-up while protecting downstream circuitry. |
| Operating temperature | −40°C to +105°C - qualified for extended industrial environments including PLC backplanes and motor control cabinets. |
Pinout & Package
TL3474AIN is supplied in a 14-pin plastic dual in-line package (PDIP-N), measuring 19.30mm × 9.40mm, with through-hole mounting and standard 0.1″ lead pitch. The package is RoHS-compliant, lead-finished with NiPdAu, and rated for indefinite reflow exposure (N/A MSL rating).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplified output of first op-amp; capable of sourcing/sinking ±75mA into resistive loads. |
| 1IN−, 1IN+ | Inverting/non-inverting inputs (ch1) | Differential pair accepting signals from 0V to VCC−1.2V; high-impedance (540GΩ) interface for sensors. |
| VCC+ | Positive supply rail | Accepts 4V–36V DC; total quiescent current per channel is 0.56mA typical at 25°C. |
| 2IN+, 2IN−, 2OUT | Inputs/output channel 2 | Independent second amplifier identical in specs to ch1; enables dual-channel signal processing in one IC. |
| 3OUT, 3IN−, 3IN+ | Inputs/output channel 3 | Third independent amplifier; supports multi-sensor monitoring or cascaded gain stages. |
| VCC− / GND | Negative supply or ground reference | Connected to system ground in single-supply mode; defines lower bound of input common-mode and output swing. |
| 4IN+, 4IN−, 4OUT | Inputs/output channel 4 | Fourth amplifier completes quad configuration; enables simultaneous conditioning of four analog channels. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 4V to 36V with input common-mode range including ground-eliminates level-shifters in sensor front-ends. |
| Low input offset voltage | 3mV maximum (A-grade) over full temperature range ensures minimal DC error in precision instrumentation. |
| High slew rate | 10V/μs positive slew rate enables faithful amplification of fast edges in ADC driver and pulse applications. |
| Output short-circuit protection | Internally limits output current to ±75mA during faults-prevents thermal runaway without external current-limiting resistors. |
| Quad-channel integration | Four matched amplifiers in one PDIP-14 package reduce board space and component count in multi-channel systems. |
Applications
| Multiplexed Data Acquisition | Test and Measurement Equipment |
|---|---|
Use Scenario: Simultaneous sampling of multiple thermocouple or strain gauge signals via analog multiplexer before digitization. IC Role / Device Role / Timing Role: Each TL3474AIN channel buffers and conditions one sensor signal prior to multiplexer switching-maintaining signal integrity across all four channels. Use Value: 4.5MHz GBW and 10V/μs slew rate ensure minimal settling delay (<2μs to 0.1%) during rapid channel switching. | Use Scenario: Front-end signal conditioning in benchtop multimeters and automated test equipment requiring stable DC gain and low noise. IC Role / Device Role / Timing Role: TL3474AIN serves as precision gain stage and reference buffer-driving high-impedance ADC inputs with minimal loading. Use Value: 10.8nV/√Hz input voltage noise and 3mV max VIO preserve measurement resolution down to microvolt levels. |
| ADC Driver Amplifier | Low-Side Current Sensing |
Use Scenario: Driving the input of a 16-bit SAR ADC in a motor control feedback loop where fast settling and low distortion are critical. IC Role / Device Role / Timing Role: TL3474AIN configures as unity-gain buffer or gain-of-2 amplifier to match ADC input impedance and voltage range. Use Value: 0.02% THD at 10kHz and 85kHz power bandwidth support clean digitization of dynamic waveforms. | Use Scenario: Measuring load current by amplifying mV-level voltage drop across a shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: TL3474AIN operates in single-supply mode with VCC− tied to ground-directly amplifying the shunt's grounded-side signal. Use Value: Input common-mode range including ground eliminates need for costly high-side current sense ICs or level translators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33074ADR2G | Higher input offset (7mV max), wider supply range (±18V), no guaranteed 3mV A-grade spec. | Less suitable for precision low-voltage sensing; better for high-voltage industrial analog signal chains. | Select when operating above 36V or requiring higher ESD tolerance; avoid when <3mV VIO is mandatory. |
| LM324DR | Lower GBW (1.2MHz), slower slew rate (0.5V/μs), higher VIO (7mV max), but lower quiescent current (0.8mA/ch). | Preferred for ultra-low-power battery systems where speed and precision are secondary to energy efficiency. | Choose for cost-sensitive, low-speed applications like basic comparators or slow sensor interfaces-not for ADC drivers or fast current sensing. |
Compared with MC33074ADR2G and LM324DR, TL3474AIN uniquely balances 4.5MHz bandwidth, 10V/μs slew rate, and 3mV max offset in a −40°C to +105°C industrial-grade PDIP package-making it optimal for time-critical, precision single-supply signal conditioning where alternatives trade off speed, accuracy, or temperature range.
Availability
TL3474AIN is available at Aetrix Electronics and suitable for programmable logic controllers, low-side current sensing circuits, and SAR ADC reference buffering requiring stable component supply across extended temperature ranges.
Supply support for TL3474AIN 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TL3474AIN belongs to TI's legacy bipolar op-amp product line, engineered for rugged single-supply operation in industrial automation, test equipment, and sensor interface applications demanding reliability across −40°C to +105°C.
FAQ
What is the maximum operating supply voltage for TL3474AIN?
The TL3474AIN supports a single-supply voltage range of 4V to 36V. Its absolute maximum supply rating is ±18V (36V total), meaning it must not be operated beyond 36V across VCC+ and VCC−/GND. Exceeding this risks permanent damage per the Absolute Maximum Ratings table in the datasheet. For reliable long-term operation, TI recommends staying within the 4–36V recommended range, especially under thermal stress or high-output-current conditions. TL3474AIN maintains specified performance across this full range.
Does TL3474AIN support true rail-to-rail output swing?
No, TL3474AIN does not provide rail-to-rail output swing. Its output voltage swing is typically within 1.2V of each rail-for example, with a 5V supply, VOH ≈ 3.7V and VOL ≈ 0.005V. This limitation arises from its bipolar output stage. However, its input common-mode range *does* include ground (VCC−), making it ideal for single-supply sensor interfaces where the input signal references ground. TL3474AIN's design prioritizes input flexibility and output drive strength (±75mA) over full rail-to-rail output compliance.
What is the guaranteed input offset voltage specification for TL3474AIN over temperature?
TL3474AIN is an A-grade device with a maximum input offset voltage (VIO) of 3mV across its full operating temperature range of −40°C to +105°C. This is explicitly specified in the Electrical Characteristics table under "TL3474A" column for VIO at full range. The typical value is 1.0mV at 25°C, but the guaranteed worst-case remains ≤3mV even at temperature extremes-critical for precision DC-coupled applications like current sensing and reference buffering where offset drift directly impacts accuracy.
Can TL3474AIN replace MC34074A in existing designs?
Yes, TL3474AIN is documented by Texas Instruments as a direct alternative to MC34074A and MC33074/A. Both share identical pinout (PDIP-14), supply range (4–36V), and functional architecture. TL3474AIN improves upon MC34074A with tighter offset (3mV vs. 7mV max), higher slew rate (10V/μs vs. 7V/μs), and lower input noise (10.8nV/√Hz vs. ~20nV/√Hz). No PCB changes are required for drop-in replacement, provided the design operates within TL3474AIN's −40°C to +105°C rating and accounts for its slightly higher quiescent current at elevated temperatures.
What package type and lead finish does TL3474AIN use?
TL3474AIN uses a 14-pin plastic dual in-line package (PDIP-N) with dimensions 19.30mm × 9.40mm and standard 0.1″ lead pitch. Its lead finish is NiPdAu (nickel-palladium-gold), RoHS-compliant, and rated for indefinite reflow exposure (N/A MSL rating). The part marking on the top surface reads "TL3474AIN", and it ships in tubes of 25 units. This through-hole package supports legacy manufacturing and prototyping workflows where surface-mount alternatives may require layout revision.
TL3474AIN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 13V/µs
- Gain Bandwidth Product:
- 4 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 3.5mA (x4 Channels)
- Current - Output / Channel:
- 34 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TL3474AIN FAQ
1.How can I place an order for TL3474AIN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474AIN 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 TL3474AIN reliable?
The price and inventory of TL3474AIN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474AIN is usually 5 days.
3.What payment methods are accepted for TL3474AIN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474AIN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474AIN?
TL3474AIN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474AIN 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 TL3474AIN?
For technical support, including TL3474AIN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474AIN requirements.
6.How does Aetrix verify that TL3474AIN is sourced from the original manufacturer or authorized distributors?
All TL3474AIN 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 TL3474AIN meets industry standards.
7.What is the process for return or replacement of TL3474AIN?
All TL3474AIN units undergo pre-shipment inspection (PSI). If there is an issue with TL3474AIN, 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 TL3474AIN part is unused and in its original packaging.
Return procedure for TL3474AIN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL3474AIN Tags
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