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Texas Instruments TL3474ACPW
- Part No.:
- TL3474ACPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TL3474ACPW.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:529
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Product details
Overview
TL3474ACPW 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 per channel - used in SAR ADC reference buffers, low-side current sensing, and multiplexed data-acquisition systems.
For engineers reviewing the TL3474ACPW datasheet, TL3474ACPW pinout, TL3474ACPW application, or TL3474ACPW equivalent, key selection considerations include its TSSOP-14 package thermal impedance (113°C/W), guaranteed 0°C to 70°C operating range, A-grade precision specs, and compatibility with single-supply industrial signal conditioning architectures.
Technical Context
The TL3474ACPW employs bipolar fabrication optimized for wide-voltage single-supply operation, with input stage design enabling common-mode voltage down to VCC− (ground). Its 4.5MHz gain-bandwidth supports stable unity-gain and moderate closed-loop configurations up to ~100kHz power bandwidth at 20Vpp swing.
Each of the four amplifiers features independent input bias current ≤500nA (typ), differential input resistance ≥540GΩ, and output short-circuit protection. The device exhibits 10.8nV/√Hz input voltage noise and 2fA/√Hz input current noise at 1kHz - critical for low-noise sensor front-ends and precision reference buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - enables stable closed-loop gain ≥10 up to ~450kHz, suitable for anti-aliasing filters and fast-settling ADC drivers. |
| Input offset voltage (max) | 3mV - ensures ≤30mV error at 10× gain, appropriate for 12-bit system accuracy without trimming. |
| Supply voltage range | 4V to 36V - supports direct interface with 5V, 12V, 24V industrial rails without external regulators. |
| Slew rate (positive/negative) | 8V/μs / 13V/μs - allows 10V step response within 2μs to 0.1%, meeting timing requirements of SAR ADC sampling clocks. |
| Input common-mode range | Includes ground (VCC−) - enables direct sensing of low-side shunt voltages without level-shifting circuitry. |
| Output short-circuit current | ±75mA - provides robust fault tolerance during transient overloads in motor control feedback paths. |
| Equivalent input noise | 10.8nV/√Hz @ 1kHz - limits contribution to total system noise floor in 16-bit precision measurement chains. |
Pinout & Package
TSSOP-14 package (5.00mm × 6.40mm, 1.2mm max height), RoHS-compliant, NIPDAU lead finish, MSL Level-1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplifier A output; capable of sourcing/sinking ±80mA with short-circuit protection. |
| 1IN–, 1IN+ | Inverting/non-inverting inputs (ch1) | Differential pair accepting common-mode voltage from VCC− to VCC+ − 2.2V; high-impedance (≥540GΩ). |
| VCC+ | Positive supply | Accepts 4V–36V; total supply current per channel ≤5.5mA across full temperature range. |
| 2IN+, 2IN–, 2OUT | Inputs/outputs (ch2) | Electrically identical to ch1; channel separation >101dB at 10kHz prevents crosstalk in multi-channel acquisition. |
| 3OUT, 3IN–, 3IN+ | Inputs/outputs (ch3) | Same performance as ch1/ch2; all four channels share VCC+ and VCC−/GND pins. |
| VCC– / GND | Negative supply or ground | Reference node for single-supply operation; must be connected to system ground when using 4V–36V unipolar supply. |
| 4IN+, 4IN–, 4OUT | Inputs/outputs (ch4) | Independent amplifier with same AC/DC specs; usable as dedicated reference buffer or active filter stage. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation with ground-referenced input | Eliminates need for dual supplies or level-shifters in low-side current sensing and battery-powered instrumentation. |
| 4.5MHz gain-bandwidth with 10.8nV/√Hz noise | Enables high-fidelity amplification of sensor signals up to ~100kHz while maintaining SNR >85dB in 16-bit systems. |
| Output short-circuit protection | Prevents latch-up or permanent damage during accidental shorts in PLC analog output modules or motor driver feedback loops. |
| A-grade 3mV max offset voltage | Reduces calibration burden in factory-programmed industrial transmitters where 12-bit linearity must be guaranteed out-of-box. |
| Quad configuration in TSSOP-14 | Conserves PCB area vs discrete op-amps; supports compact 4-channel signal conditioning for modular I/O cards. |
Applications
| Multiplexed Data-Acquisition Systems | Test and Measurement Equipment |
|---|---|
Use Scenario: Simultaneous sampling of 4 sensor channels (e.g., thermocouples, strain gauges) via analog multiplexer before ADC conversion. IC Role / Device Role / Timing Role: Quad amplifier providing matched gain, offset, and settling behavior across all channels to minimize channel-to-channel error. Use Value: 2μs settling to 0.1% eliminates inter-channel skew in 500ksps acquisition; 101dB channel separation prevents crosstalk-induced measurement drift. | Use Scenario: Front-end signal conditioning in portable multimeters and benchtop oscilloscope vertical amplifiers. IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with low THD (0.02%) and wide 4.5MHz bandwidth for accurate amplitude scaling. Use Value: 3mV max offset ensures <0.1% reading error at 10V full-scale; 10.8nV/√Hz noise preserves resolution in microvolt-range measurements. |
| ADC Driver Amplifiers | SAR ADC Reference Buffers |
Use Scenario: Driving the dynamic input capacitance of 16-bit SAR ADCs (e.g., ADS8860) with minimal distortion and settling delay. IC Role / Device Role / Timing Role: Unity-gain stable buffer delivering fast transient response to charge ADC sample-and-hold capacitor. Use Value: 13V/μs negative slew rate ensures 10V step settles in <2μs to 0.1%, matching typical SAR conversion times without pipeline latency. | Use Scenario: Buffering precision voltage references (e.g., REF5025) to drive multiple SAR ADC reference inputs with low drift. IC Role / Device Role / Timing Role: Low-output-impedance (<525Ω @ 1MHz), low-noise follower maintaining reference stability under varying load currents. Use Value: 0.005V low-level output voltage minimizes dropout error; 70°C/W thermal resistance prevents self-heating-induced reference drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL3474CPWR | Standard grade (5mV max offset), same pinout, identical TSSOP-14 package and electrical specs except offset/voltage noise. | Lower cost for non-critical 10–12-bit systems where 3mV A-grade precision is unnecessary. | Select TL3474CPWR when offset budget allows >3mV and total system accuracy target is ≤0.1%. |
| MC34074ADR | Legacy part with 4MHz GBW, higher 15V/μs slew rate, but no guaranteed A-grade offset; SOIC-14 only (no TSSOP option). | Compatible in legacy board designs using SOIC footprint; not suitable for new space-constrained layouts requiring TSSOP. | Choose MC34074ADR only for drop-in replacement on existing SOIC-based PCBs with proven thermal margin. |
Compared with TL3474CPWR, TL3474ACPW delivers tighter offset control for 12-bit accuracy; versus MC34074ADR, it offers modern 4.5MHz bandwidth and TSSOP packaging - making TL3474ACPW optimal for new industrial data-acquisition designs requiring precision, density, and thermal efficiency.
Availability
TL3474ACPW is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, test and measurement equipment, and SAR ADC reference buffers requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for TL3474ACPW 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 demanding single-supply operation, wide voltage range, and robust ESD tolerance - targeting programmable logic controllers, sensor interfaces, and factory automation systems.
FAQ
What is the maximum operating temperature range for TL3474ACPW?
The TL3474ACPW is rated for operation from 0°C to 70°C ambient temperature, as confirmed by Texas Instruments' official packaging and orderable information. This range applies to all TL3474ACPW units shipped with part marking "T3474A" and TSSOP-14 packaging. Exceeding 70°C may degrade offset drift and long-term reliability; for extended temperature operation, consider TL3474AIPWR (–40°C to 105°C).
Does TL3474ACPW support true rail-to-rail output swing?
No, TL3474ACPW does not provide rail-to-rail output. Its output voltage swing is limited to within ~1.2V of each rail under 2kΩ load - e.g., VOH = 3.7V min at VCC+ = 5V, VOL = 0.005V min at VCC− = 0V. This is sufficient for driving 12-bit ADCs with 2.5V references but requires headroom planning in 3.3V systems. TL3474ACPW maintains specified performance only within this linear output range.
Is TL3474ACPW pin-compatible with TL3474CPWR?
Yes, TL3474ACPW and TL3474CPWR are fully pin-compatible TSSOP-14 devices sharing identical pin functions, package dimensions (5.00mm × 6.40mm), and thermal characteristics. Both use the same "T3474A" top-side marking and Level-1 MSL rating. The sole functional difference is the A-grade (3mV max offset) vs standard-grade (5mV max offset) specification - no PCB layout changes are required for substitution.
What is the thermal impedance (θJA) of TL3474ACPW in its TSSOP-14 package?
The junction-to-ambient thermal impedance (θJA) of TL3474ACPW is 113°C/W, as specified in the Absolute Maximum Ratings table of the official datasheet. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pad). Actual thermal performance depends on PCB copper area, airflow, and adjacent heat sources; derating is required above 70°C ambient to maintain TJ ≤150°C.
Can TL3474ACPW be used with split supplies?
Yes, TL3474ACPW can operate from split supplies (e.g., ±15V), though it is optimized for single-supply use. When using split supplies, the common-mode input range extends from –15V to +12.8V, and output swing remains symmetric. However, the device's key advantages - ground-referenced input and simplified power architecture - are fully realized only in single-supply configurations with VCC− tied to system ground.
TL3474ACPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-TSSOP
TL3474ACPW FAQ
1.How can I place an order for TL3474ACPW through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474ACPW 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 TL3474ACPW reliable?
The price and inventory of TL3474ACPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474ACPW is usually 5 days.
3.What payment methods are accepted for TL3474ACPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474ACPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474ACPW?
TL3474ACPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474ACPW 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 TL3474ACPW?
For technical support, including TL3474ACPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474ACPW requirements.
6.How does Aetrix verify that TL3474ACPW is sourced from the original manufacturer or authorized distributors?
All TL3474ACPW 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 TL3474ACPW meets industry standards.
7.What is the process for return or replacement of TL3474ACPW?
All TL3474ACPW units undergo pre-shipment inspection (PSI). If there is an issue with TL3474ACPW, 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 TL3474ACPW part is unused and in its original packaging.
Return procedure for TL3474ACPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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