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Texas Instruments TL3474ACN
- Part No.:
- TL3474ACN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL3474ACN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:511
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Product details
Overview
TL3474ACN from Texas Instruments is a quad, high-slew-rate, single-supply operational amplifier in 14-pin PDIP packaging. It delivers 4.5MHz gain-bandwidth, 3mV max input offset voltage (A-grade), and operates from 4V to 36V supply with rail-to-rail input common-mode range including ground. It serves as an ADC driver or reference buffer in multiplexed data-acquisition systems.
For engineers reviewing the TL3474ACN datasheet, TL3474ACN pinout, TL3474ACN application, or TL3474ACN equivalent, key selection criteria include single-supply operation down to 4V, guaranteed low offset for precision signal conditioning, output short-circuit protection, and compatibility with SAR ADC reference buffering and low-side current sensing circuits.
Technical Context
The TL3474ACN uses bipolar fabrication optimized for wide single-supply operation, with input common-mode range extending to VCC− (ground). Its architecture supports stable unity-gain and closed-loop configurations up to 4.5MHz while maintaining phase margin ≥50° with 300pF capacitive load.
It features four independent amplifiers sharing one dual-rail supply (VCC+ and VCC−/GND), each with high input resistance (540GΩ), low input bias current (0.01nA typ), and differential input protection. Output stage provides ±75mA short-circuit current capability and 525Ω open-loop output impedance at 1MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - enables stable closed-loop operation up to 100kHz with gain ≥45. |
| Input offset voltage (max) | 3mV - ensures ≤3mV DC error in precision DC-coupled sensor interfaces. |
| Supply voltage range | 4V to 36V - supports direct interface with 5V, 12V, and 24V industrial rails without level-shifting. |
| Slew rate (positive/negative) | 8V/μs / 13V/μs - sustains 10Vpp signals at ≥100kHz without distortion in fast-settling applications. |
| Input common-mode range | VCC− to (VCC+ − 2.2V) - allows ground-referenced inputs on single-supply systems. |
| Output short-circuit current | ±75mA - protects against sustained overload in motor drive feedback or actuator control paths. |
| Equivalent input noise | 10.8nV/√Hz @1kHz - suitable for low-level analog front-ends with <100μV signal amplitudes. |
Pinout & Package
TL3474ACN is housed in a 14-pin plastic dual in-line package (PDIP-N), measuring 19.30mm × 9.40mm, with through-hole mounting and industry-standard lead spacing (2.54mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplified output of first op-amp; capable of sourcing/sinking ±75mA. |
| 1IN–, 1IN+ | Inverting/non-inverting inputs (ch1) | Differential pair accepting signals from 0V to VCC+−2.2V; high-Z (540GΩ) input. |
| VCC+ | Positive supply rail | Primary power connection; accepts 4V–36V; total device current ≤5.5mA per channel. |
| 2IN+, 2IN–, 2OUT | Inputs/outputs (ch2) | Independent second amplifier identical in specs and layout to channel 1. |
| 3OUT, 3IN–, 3IN+ | Inputs/outputs (ch3) | Third fully isolated amplifier; shares same supply pins but no internal crosstalk (101dB separation). |
| VCC– / GND | Negative supply or ground reference | Return path for single-supply operation; must be connected to system ground when using 4V–36V unipolar supply. |
| 4IN+, 4IN–, 4OUT | Inputs/outputs (ch4) | Fourth independent amplifier; all four channels operate simultaneously with no shared bias limitations. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimized input stage | Common-mode range includes VCC− (ground), enabling direct interfacing with sensors and DACs referenced to system ground. |
| Guaranteed low input offset (A-grade) | Max 3mV over temperature ensures minimal DC error in closed-loop transimpedance or instrumentation amplifier configurations. |
| High slew rate with load drive | 13V/μs negative slew and 300pF capacitive load stability allow use in active filters and fast-settling sample-and-hold circuits. |
| Robust output protection | Short-circuit current limiting (±75mA) prevents latch-up or thermal runaway during transient overloads in PLC I/O modules. |
| Low input bias current | 0.01nA typical enables high-impedance source interfacing (e.g., pH electrodes, piezoelectric sensors) without significant loading error. |
Applications
| Multiplexed Data-Acquisition Systems | Test and Measurement Equipment |
|---|---|
Use Scenario: Simultaneous sampling of multiple sensor channels via analog multiplexer before digitization. IC Role / Device Role / Timing Role: Buffer and condition multiplexed analog signals prior to ADC input; maintains signal integrity across channel switching. Use Value: Rail-to-rail input common-mode range eliminates need for level-shifting circuitry; 4.5MHz GBW supports >100kSPS sampling rates with minimal settling error. | Use Scenario: Signal conditioning in benchtop multimeters, oscilloscope front-ends, and calibration sources. IC Role / Device Role / Timing Role: Precision gain stage and reference buffer with low THD (0.02%) and low noise (10.8nV/√Hz). Use Value: 3mV max offset and 101dB channel separation prevent cross-talk and measurement drift in multi-channel instruments. |
| ADC Driver Amplifiers | SAR ADC Reference Buffers |
Use Scenario: Driving the dynamic input capacitance of successive-approximation register (SAR) ADCs during acquisition phase. IC Role / Device Role / Timing Role: High-current, low-output-impedance driver (525Ω @1MHz) that settles within 2μs to 0.1% for 10V step. Use Value: 13V/μs negative slew rate and ±75mA output current ensure full-scale step response without missing codes in 16-bit+ SAR converters. | Use Scenario: Providing low-noise, low-drift reference voltage to SAR ADC voltage reference input pins. IC Role / Device Role / Timing Role: Unity-gain buffer isolating reference IC from ADC switching currents and maintaining stable VREF under load. Use Value: 0.01nA input bias current prevents reference divider network errors; 3mV offset avoids systematic ADC gain miscalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34074AN | Same 14-pin PDIP package; 4.5MHz GBW; 5mV max offset (vs. TL3474ACN's 3mV A-grade); higher supply current (6.5mA/ch vs. 4.5mA/ch). | Less precise DC performance; higher power draw limits battery-operated use. | Acceptable where offset tolerance >5mV and supply headroom permits higher quiescent current. |
| TL074CN | JFET-input architecture; 3MHz GBW; 10mV max offset; lower input bias current (65pA); no short-circuit protection. | Better for ultra-high-Z sources but unsuitable for output overload conditions or fast-settling ADC drivers. | Preferred for low-noise audio or high-impedance sensor buffering where robustness and speed are secondary. |
Compared with MC34074AN and TL074CN, TL3474ACN offers tighter offset spec and integrated short-circuit protection-critical for industrial I/O modules-while maintaining compatible PDIP-14 footprint and supply voltage range for drop-in replacement in legacy designs requiring improved DC accuracy.
Availability
TL3474ACN is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, programmable logic controllers, and low-side current sensing applications requiring stable component supply and long-term industrial availability.
Supply support for TL3474ACN 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 expertise in precision op-amps and industrial signal-chain solutions.
The TL3474 family was designed for cost-sensitive, high-reliability industrial applications-including PLC analog I/O, test equipment, and sensor signal conditioning-where single-supply operation, robust output protection, and guaranteed A-grade offset are essential.
FAQ
What is the maximum operating supply voltage for TL3474ACN?
The TL3474ACN supports a total supply voltage range of 4V to 36V across VCC+ and VCC−/GND. When operated in single-supply mode, VCC− is tied to ground, so VCC+ may be applied up to +36V. Absolute maximum ratings specify ±18V differential, meaning the device must not see more than 36V between supply pins under any condition, including transients.
Does TL3474ACN support true rail-to-rail output swing?
No, TL3474ACN does not provide rail-to-rail output. Under 2kΩ load and ±15V supplies, its output swings to within ~1.2V of each rail (VOH = 13.6V min, VOL = −14.8V min). With 5V single supply, it delivers 3.7V high-level and 0.005V low-level output-sufficient for many 12-bit ADC interfaces but not for full 0–5V span utilization without external level-shifting.
Can TL3474ACN be used in dual-supply configurations?
Yes, TL3474ACN is fully functional with split supplies (e.g., ±15V). Its absolute maximum ratings allow ±18V, and recommended operating conditions specify ±15V. However, the device is optimized for single-supply use-the input common-mode range explicitly includes VCC− (ground), and its internal biasing achieves best DC performance in unipolar configurations.
What is the thermal performance of TL3474ACN in PDIP package?
The TL3474ACN in PDIP (N) package has a junction-to-ambient thermal resistance (θJA) of 80°C/W. At maximum ambient temperature (70°C) and worst-case dissipation (5.5mA × 36V ≈ 200mW per channel × 4 = 800mW), junction temperature reaches ~134°C-within the 150°C absolute maximum. Derating is recommended above 70°C ambient for continuous operation.
Is TL3474ACN RoHS compliant and lead-free?
Yes, TL3474ACN is RoHS compliant and features NiPdAu (NIPDAU) lead finish. Per TI's packaging addendum, it carries "Yes" in the RoHS column and uses lead-free termination. The PDIP package has no MSL rating (N/A for Pkg Type), confirming suitability for through-hole reflow or wave soldering without moisture sensitivity concerns.
TL3474ACN 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TL3474ACN FAQ
1.How can I place an order for TL3474ACN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474ACN 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 TL3474ACN reliable?
The price and inventory of TL3474ACN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474ACN is usually 5 days.
3.What payment methods are accepted for TL3474ACN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474ACN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474ACN?
TL3474ACN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474ACN 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 TL3474ACN?
For technical support, including TL3474ACN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474ACN requirements.
6.How does Aetrix verify that TL3474ACN is sourced from the original manufacturer or authorized distributors?
All TL3474ACN 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 TL3474ACN meets industry standards.
7.What is the process for return or replacement of TL3474ACN?
All TL3474ACN units undergo pre-shipment inspection (PSI). If there is an issue with TL3474ACN, 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 TL3474ACN part is unused and in its original packaging.
Return procedure for TL3474ACN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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