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Texas Instruments TL3474ACD
- Part No.:
- TL3474ACD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL3474ACD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:368
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Product details
Overview
TL3474ACD from Texas Instruments is a quad, high-slew-rate, single-supply operational amplifier optimized for precision analog signal conditioning in industrial and test equipment. It delivers 4.5 MHz gain-bandwidth, 3 mV max input offset voltage (A-grade), and rail-to-rail input common-mode range including ground - enabling direct interfacing with microcontroller ADCs and low-side current sensing circuits.
For engineers reviewing the TL3474ACD datasheet, TL3474ACD pinout, TL3474ACD application, or TL3474ACD equivalent, key selection criteria include its 4.5 MHz GBW, ±80 mA output drive capability, 0°C to 70°C operating temperature range, SOIC-14 package compatibility, and suitability for multiplexed data acquisition systems requiring stable DC accuracy and fast settling.
Technical Context
The TL3474ACD employs bipolar fabrication for high input impedance (540 GΩ differential resistance), low noise (10.8 nV/√Hz), and robust output short-circuit protection. Its architecture supports true single-supply operation down to 4 V while maintaining full input common-mode range to VCC−, eliminating level-shifting requirements in 5 V or 12 V systems.
It features matched channel performance (101 dB channel separation at 10 kHz), 8–13 V/μs slew rate (positive/negative), and 2 μs settling time to 0.1% for 10 V steps - making it suitable for driving SAR ADC reference buffers and multiplexed sensor front-ends where timing consistency across all four amplifiers is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5 MHz - enables stable unity-gain buffer or 10× gain configurations up to ~450 kHz without phase margin degradation |
| Input offset voltage (max) | 3 mV - ensures ≤0.06% full-scale error in 5 V-range ADC driver applications |
| Supply voltage range | 4 V to 36 V single supply - supports direct operation from 5 V logic rails or 24 V industrial buses without regulators |
| Slew rate (SR+ / SR−) | 8 V/μs / 13 V/μs - sustains clean 10 Vpp signals up to ~80 kHz before slew-induced distortion dominates |
| Common-mode input range | VCC− to (VCC+ − 2.2 V) - accepts ground-referenced sensors and low-side shunt measurements without external biasing |
| Output short-circuit current | ±75 mA - drives heavy capacitive loads (e.g., 10 nF ADC input + PCB trace) while maintaining stability |
| Quiescent current per channel | 0.56 mA typical - enables four-channel signal conditioning at <2.3 mA total, suitable for power-constrained PLC modules |
Pinout & Package
TL3474ACD is housed in a 14-pin SOIC (D) package measuring 8.65 mm × 6.00 mm with 1.27 mm lead pitch and 1.75 mm max height. The package is RoHS-compliant, NIPDAU-plated, and rated MSL Level-1 (unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplified output of first op-amp; capable of sourcing/sinking ±75 mA into resistive or capacitive loads |
| 1IN–, 1IN+ | Inverting/non-inverting inputs (ch1) | Differential pair accepting signals from 0 V to VCC+ − 2.2 V; high-impedance (540 GΩ) minimizes loading on sensor bridges |
| VCC+ | Positive supply rail | Accepts 4–36 V; decoupling capacitor required at pin for stability during fast output transitions |
| 2IN+, 2IN–, 2OUT | Inputs/output channel 2 | Electrically identical to ch1; 101 dB channel separation prevents crosstalk in multi-channel data acquisition |
| 3OUT, 3IN–, 3IN+ | Inputs/output channel 3 | Same specifications as ch1/ch2; enables three independent sensor conditioners or filter stages in one IC |
| VCC– / GND | Negative supply or ground reference | Single-supply mode: connect directly to system ground; enables true ground-sensing capability for current monitoring |
| 4IN+, 4IN–, 4OUT | Inputs/output channel 4 | Fourth independent amplifier; allows simultaneous processing of four analog channels without board area penalty |
Key Features
| Feature | Design Value |
|---|---|
| Low input offset voltage | 3 mV max (A-grade) - reduces calibration burden in precision instrumentation and eliminates zero-adjust potentiometers |
| Wide single-supply range | 4 V to 36 V - eliminates need for dual supplies in factory automation I/O modules and portable test gear |
| Ground-sensing input stage | Common-mode range includes VCC− - enables direct connection to low-side current shunts without level-shifting circuitry |
| Output short-circuit protection | Internal current limiting to ±75 mA - prevents latch-up or thermal failure when driving mismatched ADC inputs or long cables |
| High channel isolation | 101 dB crosstalk rejection at 10 kHz - preserves signal integrity in time-multiplexed 4-channel sensor arrays |
Applications
| Multiplexed Data Acquisition | ADC Driver Amplifier |
|---|---|
Use Scenario: Simultaneous sampling of four temperature, pressure, or strain sensors using a single 4-channel SAR ADC. IC Role / Device Role / Timing Role: Each TL3474ACD amplifier conditions one sensor signal (filtering, gain, buffering) prior to multiplexer switching. Use Value: 2 μs settling time ensures full 16-bit accuracy after channel change; 101 dB channel separation prevents ghosting between adjacent readings. | Use Scenario: Driving the input of a 16-bit SAR ADC (e.g., ADS8860) with buffered analog signals from industrial transducers. IC Role / Device Role / Timing Role: Acts as unity-gain buffer with low output impedance to prevent ADC aperture error and maintain linearity. Use Value: 10.8 nV/√Hz input noise and 3 mV offset preserve effective resolution; 8 V/μs slew rate supports >100 kSPS sampling without distortion. |
| SAR ADC Reference Buffer | Low-Side Current Sensing |
Use Scenario: Stabilizing and distributing precise reference voltage (e.g., 2.5 V or 4.096 V) to multiple SAR ADCs in a modular DAQ system. IC Role / Device Role / Timing Role: High-precision, low-drift buffer isolating reference source from ADC dynamic load variations. Use Value: 3 mV max offset and 10 μV/°C drift ensure reference accuracy remains within ±0.1% over 0–70°C ambient range. | Use Scenario: Measuring motor phase current via 10 mΩ shunt resistor in 24 V industrial drives, with output fed to MCU ADC. IC Role / Device Role / Timing Role: Difference amplifier configured for 50× gain, referenced to system ground with no level shift. Use Value: Input common-mode range extending to VCC− allows direct ground-referenced shunt measurement; ±75 mA output drives 100 pF + 10 kΩ ADC input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34074ADR2G | Lower GBW (1.3 MHz), higher input offset (7 mV max), no guaranteed ground-sensing input | Limited to lower-speed, less-precise industrial controls; not recommended for SAR ADC drivers or low-side sensing | Select only if cost sensitivity outweighs bandwidth and DC accuracy requirements |
| LM324DR | Slower GBW (1.2 MHz), higher input offset (7 mV), no short-circuit protection, wider temp range (−40°C to 105°C) | Suitable for general-purpose signal conditioning but lacks speed and precision for high-resolution data acquisition | Prefer for legacy designs or non-critical applications where 4.5 MHz GBW is unnecessary |
Compared with MC34074ADR2G and LM324DR, TL3474ACD provides 3.5× higher gain-bandwidth, 2.3× lower input offset, and guaranteed ground-referenced input operation - delivering measurable improvement in 16-bit ADC system linearity and multiplexer settling fidelity.
Availability
TL3474ACD is available at Aetrix Electronics and suitable for industrial programmable logic controllers, test and measurement equipment, and multiplexed data-acquisition systems requiring stable component supply and long-term production continuity.
Supply support for TL3474ACD 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 TL3474A product line was designed specifically for high-fidelity, single-supply analog front-ends in factory automation, test instrumentation, and data acquisition - emphasizing DC accuracy, wide supply flexibility, and robust output drive.
FAQ
What is the maximum operating temperature range for TL3474ACD?
The TL3474ACD is specified for operation from 0°C to 70°C ambient temperature. This commercial-grade rating aligns with its intended use in programmable logic controllers, benchtop test equipment, and industrial control modules where environmental conditions are controlled. The device's thermal impedance (θJA = 86°C/W in SOIC-D) supports reliable operation within this range under typical PCB layout and airflow conditions. TL3474ACD does not support extended temperature grades - for −40°C to 105°C operation, TI offers the TL3474AIDR variant.
Does TL3474ACD support true single-supply operation with ground-referenced inputs?
Yes, TL3474ACD supports true single-supply operation with input common-mode voltage range extending to VCC− (ground). This allows direct connection of ground-referenced sensors - such as low-side current shunts or thermocouples with cold-junction compensation - without external bias networks or level-shifting circuitry. The specification is verified across the full 0°C to 70°C range and at supply voltages as low as 4 V, making TL3474ACD suitable for battery-powered or energy-efficient industrial modules.
What is the output short-circuit current limit for TL3474ACD?
The TL3474ACD features internal short-circuit protection with a guaranteed output current limit of ±75 mA per channel. This protection activates under sustained overload conditions (e.g., output tied to VCC+ or GND) and prevents thermal runaway or permanent damage. Unlike older op-amps that may latch up or degrade under fault conditions, TL3474ACD maintains functional integrity and recovers automatically once the fault is removed - a critical reliability feature in programmable logic controller I/O modules and automated test equipment.
Can TL3474ACD drive capacitive loads commonly found at ADC inputs?
Yes, TL3474ACD is characterized to drive capacitive loads up to 10 nF while maintaining stability, as confirmed by its 50° phase margin with 300 pF load and CL = 0 test conditions. Its 525 Ω open-loop output impedance and 8–13 V/μs slew rate enable robust interface with SAR ADCs having typical input capacitances of 10–30 pF plus PCB trace capacitance. For optimal performance, TI recommends placing a 10–47 Ω series resistor between TL3474ACD output and ADC input to isolate the capacitive load and preserve settling behavior.
How does TL3474ACD compare to TL3474CD in terms of precision performance?
TL3474ACD is the A-grade version of the TL3474 family, featuring tighter DC specifications than the standard TL3474CD: input offset voltage is guaranteed ≤3 mV (vs. ≤7 mV for TL3474CD), and input offset voltage drift is 10 μV/°C (vs. 12 μV/°C). Both share identical AC performance (4.5 MHz GBW, 8–13 V/μs slew rate), but TL3474ACD's improved DC accuracy makes it preferred for 16-bit data acquisition, precision reference buffering, and low-drift sensor signal chains where calibration overhead must be minimized.
TL3474ACD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TL3474ACD FAQ
1.How can I place an order for TL3474ACD through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474ACD 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 TL3474ACD reliable?
The price and inventory of TL3474ACD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474ACD is usually 5 days.
3.What payment methods are accepted for TL3474ACD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474ACD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474ACD?
TL3474ACD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474ACD 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 TL3474ACD?
For technical support, including TL3474ACD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474ACD requirements.
6.How does Aetrix verify that TL3474ACD is sourced from the original manufacturer or authorized distributors?
All TL3474ACD 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 TL3474ACD meets industry standards.
7.What is the process for return or replacement of TL3474ACD?
All TL3474ACD units undergo pre-shipment inspection (PSI). If there is an issue with TL3474ACD, 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 TL3474ACD part is unused and in its original packaging.
Return procedure for TL3474ACD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL3474ACD Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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