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Texas Instruments TL3474ACPWR
- Part No.:
- TL3474ACPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TL3474ACPWR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,915
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Product details
Overview
TL3474ACPWR from Texas Instruments is a quad, high-slew-rate, single-supply operational amplifier in a 14-pin TSSOP package. It delivers 4.5 MHz gain-bandwidth, 10 V/μs positive slew rate, and operates from 4 V to 36 V with input common-mode range extending to ground (VCC−). It is used in SAR ADC reference buffers and low-side current sensing circuits where rail-to-rail input capability and output short-circuit protection are required.
For engineers reviewing the TL3474ACPWR datasheet, TL3474ACPWR pinout, TL3474ACPWR application, or TL3474ACPWR equivalent, this page provides verified specifications, validated pin functions, confirmed use cases in multiplexed data acquisition and programmable logic controllers, and two technically documented alternative parts for design continuity.
Technical Context
The TL3474ACPWR employs bipolar fabrication optimized for single-supply operation, with input stage biasing enabling full ground-referenced common-mode range (VICR = VCC− to 12.8 V at ±15 V supply). Its 4.5 MHz GBW and 10 V/μs slew rate support fast settling (2 μs to 0.1%) in closed-loop configurations driving capacitive loads up to 300 pF.
It integrates four independent amplifiers sharing one dual-rail supply (VCC+ and VCC−/GND), each featuring high input resistance (540 GΩ), low input offset voltage (≤3 mV max for A-grade), and differential input protection. Output short-circuit protection limits sink/source current to ±75 mA without latch-up under fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5 MHz - sets maximum stable closed-loop bandwidth at unity gain; supports 100 kHz power bandwidth with 20 VPP output swing. |
| Positive slew rate | 10 V/μs - enables accurate reproduction of fast-rising signals in ADC driver applications without distortion. |
| Input offset voltage (max) | 3 mV - ensures ≤3 mV DC error at amplifier output when inputs are tied, critical for precision low-side current sensing. |
| Supply voltage range | 4 V to 36 V - allows direct integration into industrial 5 V, 12 V, and 24 V systems without external regulators. |
| Common-mode input range | VCC− to 12.8 V (at ±15 V supply) - includes ground, enabling direct interfacing with sensors referenced to system GND. |
| Output short-circuit current | ±75 mA - protects against sustained overloads while maintaining functionality during transient faults in PLC I/O modules. |
| Equivalent input noise voltage | 10.8 nV/√Hz at 1 kHz - supports high-resolution signal conditioning in test equipment without degrading SNR. |
Pinout & Package
TSSOP-14 (PW) package, 5.00 mm × 6.40 mm body, 0.65 mm pitch, 1.2 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplifier A output; capable of sourcing/sinking ±75 mA with short-circuit protection. |
| 1IN– | Inverting input channel 1 | Differential input node for amplifier A; high impedance (540 GΩ) minimizes loading on feedback networks. |
| 1IN+ | Non-inverting input channel 1 | Differential input node for amplifier A; accepts signals down to VCC− (ground) in single-supply mode. |
| VCC+ | Positive supply voltage | Main positive rail; supports 4 V to 36 V operation; total current into this pin ≤80 mA per device. |
| VCC– / GND | Negative supply or ground | Reference node for single-supply operation; must be connected to system ground when using 4–36 V unipolar supply. |
| 4OUT | Output channel 4 | Amplifier D output; electrically identical to 1OUT; supports independent load driving in multi-channel systems. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Input common-mode range includes VCC− (ground), eliminating need for negative rail in sensor interface and PLC analog input stages. |
| Output short-circuit protection | Internally limits output current to ±75 mA, preventing thermal runaway during wiring faults or load shorts in industrial control modules. |
| Low input offset voltage | ≤3 mV (A-grade max) ensures minimal DC error in precision current sensing and reference buffer applications without trimming. |
| High input resistance | 540 GΩ differential input resistance avoids signal attenuation in high-impedance source circuits like piezoelectric sensor interfaces. |
| 4.5 MHz gain-bandwidth | Enables stable unity-gain configuration with >100 kHz small-signal bandwidth, suitable for driving SAR ADC sample-and-hold inputs. |
Applications
| Multiplexed Data Acquisition | Test and Measurement Equipment |
|---|---|
|
Use Scenario: Simultaneous sampling of multiple sensor channels via analog multiplexer before ADC conversion. IC Role / Device Role: Buffer and drive multiplexer output to maintain signal integrity and prevent crosstalk-induced settling errors. Use Value: 10 V/μs slew rate and 2 μs settling time ensure full-scale step accuracy across all 4 channels within ADC acquisition window. |
Use Scenario: Signal conditioning front-end in benchtop multimeters and oscilloscope input stages. IC Role / Device Role: Precision gain stage and offset correction amplifier prior to digitization. Use Value: 3 mV max offset and 10.8 nV/√Hz noise preserve measurement resolution down to microvolt levels. |
| SAR ADC Reference Buffers | Low-Side Current Sensing |
|
Use Scenario: Driving the reference input of 16-bit SAR ADCs requiring low-impedance, low-noise, stable voltage sources. IC Role / Device Role: Unity-gain buffer isolating precision voltage reference from ADC dynamic load variations. Use Value: 4.5 MHz GBW and 525 Ω open-loop output impedance ensure <0.01% gain error and fast transient recovery. |
Use Scenario: Amplifying mV-level shunt voltage in motor drive or power supply current monitoring paths. IC Role / Device Role: Differential amplifier with ground-referenced inputs measuring current through low-side shunt resistor. Use Value: Input common-mode range including VCC− enables direct connection to shunt grounded at system GND without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34074APG | Higher input offset (7 mV max), lower GBW (1.3 MHz), no short-circuit protection. | Limited to non-critical industrial signal conditioning; unsuitable for precision ADC buffering or fault-prone environments. | Select only if cost sensitivity outweighs performance requirements and fault tolerance is not needed. |
| TL074CDR | JFET-input (higher Zin), lower noise (18 pA/√Hz), but narrower common-mode range (does not include ground). | Requires dual supply or level-shifting circuitry for ground-referenced inputs; incompatible with true single-supply low-side sensing. | Prefer only when ultra-high input impedance is mandatory and system architecture supports split supplies. |
Compared with MC34074APG and TL074CDR, TL3474ACPWR uniquely combines ground-sensing capability, short-circuit protection, and 4.5 MHz bandwidth-making it the only option among the three that supports robust, single-supply, precision current sensing and SAR ADC reference buffering without external support circuitry.
Availability
TL3474ACPWR 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 across industrial temperature ranges (0°C to 70°C).
Supply support for TL3474ACPWR 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 chain solutions.
The TL3474ACPWR belongs to TI's legacy bipolar op-amp portfolio designed specifically for cost-sensitive, high-reliability industrial applications demanding single-supply operation, ground-sensing capability, and robust fault tolerance.
FAQ
What is the operating temperature range for TL3474ACPWR?
The TL3474ACPWR is rated for 0°C to 70°C ambient operation. This commercial-grade temperature range is specified for the 'C' suffix variant (TL3474AC), and the part marking 'T3474A' on the device body confirms its compliance with this grade. It is not rated for extended industrial (–40°C to 105°C) operation - that requires the TL3474AIPWR variant.
Does TL3474ACPWR support true single-supply operation with input signals at ground potential?
Yes, TL3474ACPWR supports true single-supply operation with input common-mode voltage extending to VCC−, which is ground when configured for unipolar supply. This allows direct connection of sensors or shunt resistors referenced to system ground without level-shifting circuitry - a key differentiator from JFET-input op-amps like TL074.
What is the maximum capacitive load TL3474ACPWR can drive while maintaining stability?
TL3474ACPWR maintains phase margin ≥50° with 300 pF capacitive load at unity gain (AV = 1), as verified in the datasheet's typical characteristics. Driving larger loads requires external isolation resistor (e.g., 10–50 Ω in series with output) to preserve stability, especially in ADC driver or cable-driving configurations.
Is TL3474ACPWR pin-compatible with MC34074A series devices?
Yes, TL3474ACPWR shares identical pinout and footprint with MC34074A in TSSOP-14 (PW) packaging. Both feature 1OUT, 1IN–, 1IN+, VCC+, 2IN+, 2IN–, 2OUT, 3OUT, 3IN–, 3IN+, VCC–/GND, 4IN+, 4IN–, and 4OUT in the same order - enabling drop-in replacement in existing layouts where electrical specs align.
What does the 'A' in TL3474ACPWR signify?
The 'A' in TL3474ACPWR denotes the A-grade version, specifying tighter electrical tolerances: maximum input offset voltage of 3 mV (vs. 10 mV for standard grade), improved CMRR (80 dB min), and enhanced supply-voltage rejection (70 dB min). This grade is required for applications demanding higher DC precision, such as reference buffering and calibrated measurement systems.
TL3474ACPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
TL3474ACPWR FAQ
1.How can I place an order for TL3474ACPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474ACPWR 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 TL3474ACPWR reliable?
The price and inventory of TL3474ACPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474ACPWR is usually 5 days.
3.What payment methods are accepted for TL3474ACPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474ACPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474ACPWR?
TL3474ACPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474ACPWR 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 TL3474ACPWR?
For technical support, including TL3474ACPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474ACPWR requirements.
6.How does Aetrix verify that TL3474ACPWR is sourced from the original manufacturer or authorized distributors?
All TL3474ACPWR 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 TL3474ACPWR meets industry standards.
7.What is the process for return or replacement of TL3474ACPWR?
All TL3474ACPWR units undergo pre-shipment inspection (PSI). If there is an issue with TL3474ACPWR, 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 TL3474ACPWR part is unused and in its original packaging.
Return procedure for TL3474ACPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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