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Texas Instruments TL3474IDR
- Part No.:
- TL3474IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL3474IDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,030
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Product details
Overview
TL3474IDR from Texas Instruments is a quad, high-slew-rate, single-supply operational amplifier optimized for industrial and test equipment. It delivers 4.5MHz gain-bandwidth, ±10V/μs slew rate (positive), and operates from 4V to 36V single supply with input common-mode range extending to ground (VCC−). It serves as an ADC driver, SAR reference buffer, and low-side current sensing amplifier in programmable logic controllers.
For engineers reviewing the TL3474IDR datasheet, TL3474IDR pinout, TL3474IDR application, or TL3474IDR equivalent, key selection criteria include guaranteed −40°C to +105°C operation, 3mV max input offset voltage (A-grade), output short-circuit protection, and compatibility with 14-pin SOIC layout constraints.
Technical Context
The TL3474IDR uses bipolar fabrication to achieve wide single-supply operation (4V–36V) while maintaining rail-to-rail input capability down to VCC−. Its architecture supports multiplexed data-acquisition systems by enabling stable DC-coupled signal conditioning without dual supplies.
It features four independent amplifiers sharing one VCC+ and one VCC−/GND pin, with differential input resistance of 540GΩ and 10pF input capacitance. Channel separation exceeds 101dB at 10kHz, minimizing crosstalk in multi-channel sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - enables stable unity-gain operation up to 4.5MHz or closed-loop gain of 10 at 450kHz |
| Input offset voltage (max) | 3mV - ensures ≤3mV DC error in precision DC-coupled gain stages without trimming |
| Supply voltage range | 4V to 36V single supply - eliminates need for negative rail in industrial 5V/12V/24V systems |
| Slew rate (SR+) | 8–10V/μs - supports fast settling for 10V step inputs within 2μs to 0.1% accuracy |
| Input common-mode range | Includes ground (VCC−) - allows direct interfacing with 0V-referenced sensors and current-shunt monitors |
| Output short-circuit protection | Yes - prevents latch-up or damage during transient overloads in PLC I/O modules |
| Operating temperature | −40°C to +105°C - qualified for extended-temperature industrial control environments |
Pinout & Package
TL3474IDR is supplied in a 14-pin SOIC (D) package measuring 8.65mm × 6.00mm with 1.27mm pitch, 1.75mm max height, and RoHS-compliant NiPdAu lead finish. It meets JEDEC MS-012AB mechanical standards and is rated MSL Level-1 (unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplifier A output; capable of sourcing/sinking ±80mA, rail-to-rail swing under load |
| 1IN−, 1IN+ | Inverting/non-inverting inputs (ch1) | Differential pair accepting signals from 0V to VCC+−2.2V; high-Z (540GΩ) input |
| VCC+ | Positive supply | Primary power rail; accepts 4V–36V; total device supply current ≤5.5mA (all channels) |
| 2IN+, 2IN−, 2OUT | Inputs/outputs (ch2) | Independent second amplifier; identical specs and layout symmetry to ch1 |
| 3OUT, 3IN−, 3IN+ | Inputs/outputs (ch3) | Third amplifier; shares VCC−/GND with all channels; no cross-channel supply coupling |
| VCC− / GND | Negative supply or ground | Reference node for single-supply operation; must be low-impedance to minimize noise coupling |
| 4IN+, 4IN−, 4OUT | Inputs/outputs (ch4) | Fourth amplifier; fully isolated electrically; enables 4-channel simultaneous sampling front-ends |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation from 4V | Enables use in battery-powered or 5V microcontroller-based systems without charge pumps or dual rails |
| Input common-mode range includes ground | Permits direct connection to shunt resistors referenced to system ground in low-side current sensing |
| 4.5MHz gain-bandwidth product | Supports >100ksps sampling in 12-bit SAR ADC driver applications with <0.1% settling error |
| Output short-circuit protection | Allows safe integration into field-wiring interfaces subject to accidental shorts in industrial I/O modules |
| −40°C to +105°C operating range | Meets extended temperature requirements for DIN-rail mounted PLCs and motor drive control boards |
Applications
| ADC Driver Amplifier | SAR ADC Reference Buffer |
|---|---|
Use Scenario: Driving the analog input of a 12-bit SAR ADC in a data logger with multiplexed thermocouple and RTD channels. IC Role / Device Role / Timing Role: Signal conditioning amplifier providing gain, filtering, and drive strength to overcome ADC input capacitance and maintain linearity. Use Value: 4.5MHz GBW and 10V/μs slew rate ensure full-scale 10V steps settle to 0.1% within 2μs, matching typical SAR conversion times. | Use Scenario: Buffering the internal reference voltage of a precision SAR ADC used in automated test equipment. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage follower isolating the reference from switching transients and load variations. Use Value: 3mV max offset and 10.8nV/√Hz input noise preserve reference accuracy and minimize code-width uncertainty in 16-bit conversions. |
| Low-Side Current Sensing | Programmable Logic Controller I/O |
Use Scenario: Measuring motor phase current via shunt resistor placed between load and system ground in an industrial inverter. IC Role / Device Role / Timing Role: Differential amplifier configured for high common-mode rejection of ground bounce and PWM noise. Use Value: Input common-mode range including VCC− allows direct sensing at 0V potential; 101dB channel separation prevents crosstalk between phases. | Use Scenario: Signal conditioning for analog input modules in DIN-rail mounted PLCs receiving 4–20mA or 0–10V field signals. IC Role / Device Role / Timing Role: Quad op-amp providing simultaneous scaling, filtering, and isolation for multiple sensor inputs. Use Value: −40°C to +105°C rating and 36V max supply support harsh cabinet environments and wide input voltage ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC33074DR2G | Lower GBW (1.8MHz), higher input offset (7mV max), same SOIC-14 package | Less suitable for high-speed ADC drivers or precision low-side sensing requiring sub-5mV offset | Select when cost sensitivity outweighs speed/precision needs and ambient temperature stays ≤85°C |
| TL074CDR | JFET-input (higher input impedance), lower supply current (1.4mA/ch), but no ground-sensing input range | Cannot interface directly with 0V-referenced shunts; requires level-shifting for low-side sensing | Prefer for high-Z sensor interfaces where input bias current <200pA is critical and dual supply is available |
Compared with MC33074DR2G and TL074CDR, TL3474IDR provides superior single-supply usability, faster settling, and tighter offset-making it optimal for modern industrial ADC front-ends and ground-referenced current monitoring where layout simplicity and temperature robustness are essential.
Availability
TL3474IDR is available at Aetrix Electronics and suitable for programmable logic controllers, test and measurement equipment, and multiplexed data-acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for TL3474IDR 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 chains.
The TL3474 family was designed specifically for rugged, single-supply industrial signal conditioning-emphasizing ground-sensing capability, thermal stability, and reliability in programmable controllers and automated test systems.
FAQ
What is the maximum operating temperature range for TL3474IDR?
The TL3474IDR is rated for operation from −40°C to +105°C, making it suitable for demanding industrial environments such as motor control cabinets and outdoor test equipment enclosures. This extended temperature grade is confirmed in the TI packaging addendum for the 'I' suffix variant, and the 'DR' suffix denotes tape-and-reel packaging compatible with automated assembly.
Does TL3474IDR support true single-supply operation with input signals at ground potential?
Yes, TL3474IDR supports true single-supply operation with its input common-mode voltage range explicitly including VCC− (ground). This allows direct connection to 0V-referenced sources like shunt resistors in low-side current sensing without level-shifting circuitry-verified in Section 5.2 of the SLVS461C datasheet.
What is the gain-bandwidth product of TL3474IDR and how does it impact ADC driver performance?
The TL3474IDR has a guaranteed 4.5MHz gain-bandwidth product. In ADC driver applications, this enables stable unity-gain buffering up to 4.5MHz or closed-loop gains of 10 at 450kHz, ensuring minimal phase lag and fast settling (<2μs to 0.1%) for 12-bit+ SAR converters-critical for accurate multiplexed data acquisition.
Is TL3474IDR pin-compatible with MC34074 or MC33074 series op-amps?
TL3474IDR uses the standard 14-pin SOIC (D) footprint and shares identical pin functions with MC34074/MC33074 devices, including VCC+, VCC−/GND, and channel I/O assignments. However, differences in electrical specs (e.g., higher GBW, lower offset) mean functional substitution is valid, but full drop-in replacement requires validation of loop stability and noise performance in the target design.
What package type and moisture sensitivity level does TL3474IDR have?
TL3474IDR is packaged in a 14-pin SOIC (D) with 8.65mm × 6.00mm body size, NiPdAu lead finish, and MSL Level-1 rating (unlimited floor life at ≤30°C/85% RH). This simplifies handling and reflow for high-volume manufacturing without baking requirements prior to assembly.
TL3474IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TL3474IDR FAQ
1.How can I place an order for TL3474IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474IDR 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 TL3474IDR reliable?
The price and inventory of TL3474IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474IDR is usually 5 days.
3.What payment methods are accepted for TL3474IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474IDR?
TL3474IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474IDR 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 TL3474IDR?
For technical support, including TL3474IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474IDR requirements.
6.How does Aetrix verify that TL3474IDR is sourced from the original manufacturer or authorized distributors?
All TL3474IDR 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 TL3474IDR meets industry standards.
7.What is the process for return or replacement of TL3474IDR?
All TL3474IDR units undergo pre-shipment inspection (PSI). If there is an issue with TL3474IDR, 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 TL3474IDR part is unused and in its original packaging.
Return procedure for TL3474IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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