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Texas Instruments TL3474AIDR
- Part No.:
- TL3474AIDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL3474AIDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,571
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Product details
Overview
TL3474AIDR 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-used in SAR ADC reference buffers, low-side current sensing, and multiplexed data-acquisition systems.
For engineers reviewing the TL3474AIDR datasheet, TL3474AIDR pinout, TL3474AIDR application, or TL3474AIDR equivalent, this page provides verified specifications, SOIC-14 package details, functional alternatives, and design-critical electrical parameters including slew rate (10V/μs), noise (10.8nV/√Hz), and CMRR (97dB).
Technical Context
The TL3474AIDR implements a bipolar-input, internally compensated op-amp architecture optimized for single-supply operation. Its input stage supports common-mode voltages down to VCC−, enabling direct interfacing with grounded sensors and ADC references without level-shifting circuitry.
It features four independent amplifiers in one SOIC-14 package, each with short-circuit protection, 540GΩ differential input resistance, and 525Ω open-loop output impedance at 1MHz. The device uses TI's modern "RFB" die fabrication, ensuring stable performance across −40°C to +105°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - sets usable closed-loop bandwidth for unity-gain stable configurations up to ~4.5MHz. |
| Input offset voltage (max) | 3mV - ensures ≤3mV DC error in precision DC-coupled signal paths like sensor front-ends. |
| Slew rate (positive) | 10V/μs - enables accurate reproduction of fast 10V-step signals within 2μs settling time to 0.1%. |
| Supply voltage range | 4V to 36V - supports wide industrial single-rail supplies, eliminating need for dual ±15V rails. |
| Input common-mode range | Includes VCC− (ground) - allows direct connection of grounded transducers and current-sense resistors. |
| Equivalent input noise | 10.8nV/√Hz @ 1kHz - suitable for low-noise amplification in 10kHz-bandwidth measurement channels. |
| CMRR | 97dB - rejects power-supply ripple and common-mode interference in noisy industrial environments. |
Pinout & Package
TL3474AIDR is housed in a 14-pin SOIC (D) package measuring 8.65mm × 6.00mm with 1.27mm pitch, RoHS-compliant NIPDAU lead finish, and moisture sensitivity level (MSL) 1 (unlimited floor life at ≤30°C/60% RH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplifier A output; capable of ±80mA drive into loads ≥2kΩ. |
| 1IN–, 1IN+ | Inverting / non-inverting input channel 1 | Differential pair inputs for amplifier A; support common-mode range to VCC−. |
| VCC+ | Positive supply voltage | Accepts 4V–36V; total supply current per channel is 0.56mA typical. |
| 2IN+, 2IN–, 2OUT | Inputs and output channel 2 | Independent amplifier B with identical specs and layout symmetry to channel A. |
| 3OUT, 3IN–, 3IN+ | Inputs and output channel 3 | Amplifier C; pin-compatible with A/B for multi-channel signal conditioning. |
| VCC– / GND | Negative supply or ground reference | Single-supply return node; must be connected to system ground for proper biasing. |
| 4IN+, 4IN–, 4OUT | Inputs and output channel 4 | Amplifier D; completes quad configuration for simultaneous 4-channel analog processing. |
Key Features
| Feature | Design Value |
|---|---|
| Low input offset voltage | 3mV max (A-grade) - reduces DC calibration burden in precision instrumentation and sensor interfaces. |
| Wide single-supply operation | 4V to 36V - eliminates external voltage translators when interfacing with 5V, 12V, or 24V industrial buses. |
| Rail-to-rail input common-mode | Includes VCC− (ground) - enables direct amplification of signals referenced to system ground without level shifters. |
| Output short-circuit protection | ±80mA continuous sink/source - prevents latch-up or damage during transient overloads or PCB shorts. |
| High input resistance | 540GΩ differential - minimizes loading on high-impedance sources such as piezoelectric sensors or photodiode transimpedance nodes. |
Applications
| ADC Driver Amplifier | SAR ADC Reference Buffer |
|---|---|
Use Scenario: Driving the analog input of a 16-bit SAR ADC in a programmable logic controller with 100ksps sampling rate. IC Role / Device Role / Timing Role: Signal conditioning amplifier providing low-noise, low-offset gain before the ADC sampling switch. Use Value: 10.8nV/√Hz input noise and 3mV offset ensure <1 LSB error contribution at 16-bit resolution under 10kHz bandwidth. |
Use Scenario: Buffering the internal reference voltage of a SAR ADC to maintain stability during dynamic switching events. IC Role / Device Role / Timing Role: Low-output-impedance voltage follower isolating the reference from capacitive load variations. Use Value: 525Ω open-loop output impedance and 10V/μs slew rate suppress reference droop during 100ns acquisition windows. |
| Low-Side Current Sensing | Multiplexed Data-Acquisition System |
Use Scenario: Measuring motor phase current via shunt resistor placed between load and ground in an industrial drive. IC Role / Device Role / Timing Role: Differential amplifier configured for high-common-mode rejection of PWM noise near ground potential. Use Value: Input common-mode range including VCC− allows direct connection to shunt; 97dB CMRR rejects 10kHz PWM edge noise. |
Use Scenario: Simultaneous analog signal conditioning for 4 temperature, pressure, and flow sensors in a modular DAQ module. IC Role / Device Role / Timing Role: Quad op-amp performing gain, filtering, and level-shifting for four independent sensor channels. Use Value: Four matched amplifiers in one SOIC-14 reduce board area by 75% vs discrete solutions while maintaining channel-to-channel isolation >101dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL3474CDR | Same SOIC-14 package and pinout; rated for 0°C to 70°C (commercial temp grade). | Lacks extended temperature support; unsuitable for industrial environments exceeding 70°C ambient. | Select TL3474CDR only for cost-sensitive commercial designs operating within 0°C–70°C. |
| MC34074ADR2G | Pin-compatible quad op-amp; 4.5MHz GBW but higher 5mV max offset and 15V/μs slew rate. | Higher offset increases DC error in precision current sensing; faster slew may increase EMI susceptibility. | Choose MC34074ADR2G if higher slew rate is required and 5mV offset is acceptable in the target application. |
Compared with TL3474CDR, TL3474AIDR adds −40°C to +105°C operation and tighter 3mV offset; compared with MC34074ADR2G, it trades 5mV offset and 15V/μs slew for lower noise (10.8nV/√Hz vs ~20nV/√Hz) and improved CMRR (97dB vs 90dB), favoring precision industrial signal chains.
Availability
TL3474AIDR is available at Aetrix Electronics and suitable for industrial automation, test and measurement equipment, and programmable logic controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL3474AIDR 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 focused on analog and embedded processing technologies, with decades of expertise in precision op-amps and industrial-grade signal conditioning ICs.
The TL3474AIDR belongs to TI's TL3474 family of high-slew-rate, single-supply op-amps designed specifically for robust performance in multiplexed data acquisition, sensor interfacing, and industrial control systems.
FAQ
What is the operating temperature range of TL3474AIDR?
The TL3474AIDR is rated for −40°C to +105°C free-air operating temperature, making it suitable for demanding industrial environments where ambient temperatures exceed commercial-grade limits. This extended range is confirmed in the "Recommended Operating Conditions" table of the official SLVS461C datasheet, and applies specifically to the TL3474AI-grade variants including TL3474AIDR.
Does TL3474AIDR support true single-supply operation with input down to ground?
Yes, TL3474AIDR supports true single-supply operation with its input common-mode voltage range explicitly including VCC− (ground), as documented in Section 5.2 of the SLVS461C datasheet. This allows direct connection of grounded sensors and shunt resistors without external level-shifting circuitry-critical for low-side current sensing and grounded reference buffering applications.
What is the maximum output current capability of TL3474AIDR?
TL3474AIDR provides ±80mA short-circuit output current per channel, as specified in the Absolute Maximum Ratings table (Section 5.1) of the SLVS461C datasheet. This rating is validated under thermal-limited conditions and supports driving moderate loads such as ADC input capacitance, small relays, or LED indicators without external buffers.
Is TL3474AIDR pin-compatible with MC34074/A series op-amps?
Yes, TL3474AIDR is pin-compatible with MC34074/A and MC33074/A quad op-amps, as explicitly stated in the "Features" section of the SLVS461C datasheet. All share identical SOIC-14 pin assignments, supply connections, and channel ordering-enabling drop-in replacement in existing designs where enhanced offset, noise, or temperature performance is needed.
What package type and dimensions does TL3474AIDR use?
TL3474AIDR uses the SOIC (D) package: 14-pin, 8.65mm × 6.00mm body size, 1.27mm lead pitch, and 1.75mm max height. Mechanical details-including land pattern, stencil design, and tape-and-reel specifications-are provided in TI's D0014A package outline drawing and confirmed in the "Mechanical, Packaging, and Orderable Information" section of SLVS461C.
TL3474AIDR 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
TL3474AIDR FAQ
1.How can I place an order for TL3474AIDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474AIDR 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 TL3474AIDR reliable?
The price and inventory of TL3474AIDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474AIDR is usually 5 days.
3.What payment methods are accepted for TL3474AIDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474AIDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474AIDR?
TL3474AIDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474AIDR 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 TL3474AIDR?
For technical support, including TL3474AIDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474AIDR requirements.
6.How does Aetrix verify that TL3474AIDR is sourced from the original manufacturer or authorized distributors?
All TL3474AIDR 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 TL3474AIDR meets industry standards.
7.What is the process for return or replacement of TL3474AIDR?
All TL3474AIDR units undergo pre-shipment inspection (PSI). If there is an issue with TL3474AIDR, 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 TL3474AIDR part is unused and in its original packaging.
Return procedure for TL3474AIDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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