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Texas Instruments TL3474CPW
- Part No.:
- TL3474CPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TL3474CPW.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:575
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Product details
Overview
TL3474CPW from Texas Instruments is a quad, high-slew-rate, single-supply operational amplifier in TSSOP-14 package, featuring 4.5MHz gain-bandwidth product, 3mV max input offset voltage (A-grade), and rail-to-rail input common-mode range including ground. It delivers 8V/μs positive slew rate and supports 4V to 36V single-supply operation, making it suitable for precision ADC driver and low-side current sensing applications.
For engineers reviewing the TL3474CPW datasheet, TL3474CPW pinout, TL3474CPW application, or TL3474CPW equivalent, key selection considerations include its bipolar-input architecture, 10.8nV/√Hz input voltage noise, 540GΩ differential input resistance, and compatibility with multiplexed data-acquisition systems requiring stable DC accuracy and fast transient response.
Technical Context
The TL3474CPW implements a four-channel, internally compensated, bipolar-input op-amp topology optimized for single-supply operation. Its input stage includes PNP transistors enabling VCM down to VCC− (ground), while output short-circuit protection and thermal shutdown enhance system robustness.
It operates across 0°C to 70°C ambient temperature, draws 0.56mA per channel at ±15V supply, and maintains 65dB minimum CMRR and 70dB minimum PSRR - critical for industrial signal conditioning where supply ripple and common-mode interference must be rejected without dual-rail infrastructure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - enables stable unity-gain buffer or 10× inverting amplifier up to ~450kHz without phase margin degradation |
| Input offset voltage (max) | 3mV - ensures ≤0.06% full-scale error in 5V-range SAR ADC reference buffers |
| Slew rate (positive) | 8V/μs - supports ≤1.25V step settling within 2μs to 0.1% for 10Vpp signals |
| Supply voltage range | 4V to 36V single supply - eliminates need for negative rail in PLC analog I/O modules |
| Input voltage noise | 10.8nV/√Hz at 1kHz - limits contribution to total system noise floor in 16-bit precision measurement front-ends |
| Differential input resistance | 540GΩ - minimizes loading error on high-impedance sensor sources like thermocouples or pH electrodes |
| Common-mode input range | VCC− to (VCC+ − 2.2V) - allows direct interface to ground-referenced sensors without level-shifting circuitry |
Pinout & Package
TSSOP-14 (PW) package: 5.00mm × 6.40mm body, 0.65mm lead pitch, 1.2mm max height, RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplified output of first op-amp; capable of sourcing/sinking ±80mA short-circuit current |
| 1IN– | Inverting input channel 1 | Differential input node for first amplifier; biased by 0.01nA typical input bias current |
| 1IN+ | Non-inverting input channel 1 | High-impedance input node referenced to ground or signal source; supports rail-to-rail common-mode swing |
| VCC+ | Positive supply voltage | Main power rail (4V–36V); supplies all four amplifiers and internal bias circuitry |
| VCC– / GND | Negative supply or ground | Return path for single-supply operation; serves as reference for input common-mode and output swing |
| 4OUT | Output channel 4 | Final amplifier output; electrically identical to 1OUT with same drive capability and thermal characteristics |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Includes ground (VCC−) - enables direct connection to 0V-referenced sensors without external level shifters |
| Low input offset voltage | ≤3mV max (A-grade) - reduces DC error in closed-loop gain stages used for precision current sensing |
| High open-loop gain | ≥25V/mV (20,000V/V) - ensures <0.005% gain error in unity-gain configurations with 10kΩ feedback |
| Output short-circuit protection | ±75mA continuous sink/source - prevents latch-up or thermal runaway during overcurrent events in motor control feedback paths |
| Low input voltage noise | 10.8nV/√Hz - preserves SNR in low-level signal amplification before 16-bit ADC sampling |
Applications
| Multiplexed Data-Acquisition Systems | ADC Driver Amplifiers |
|---|---|
Use Scenario: Simultaneous sampling of multiple sensor channels via analog multiplexer feeding a shared SAR ADC. IC Role / Device Role / Timing Role: Buffer and condition each channel's signal prior to multiplexing; provides low-output-impedance drive to minimize charge injection errors. Use Value: 4.5MHz GBW and 8V/μs slew rate ensure full-scale step response settles within 2μs to 0.1%, preserving acquisition timing integrity across channels. |
Use Scenario: Driving the input of a 16-bit SAR ADC with variable input impedance and switching capacitance. IC Role / Device Role / Timing Role: Unity-gain follower isolating source impedance from ADC sampling capacitor; maintains stability under capacitive load. Use Value: 540GΩ input resistance prevents loading of high-Z sources; 10.8nV/√Hz noise avoids degrading effective resolution below 16 bits. |
| SAR ADC Reference Buffers | Low-Side Current Sensing |
Use Scenario: Providing low-noise, low-drift buffered reference voltage to SAR ADC internal reference input. IC Role / Device Role / Timing Role: Precision voltage follower stabilizing reference node against dynamic current draw during conversion cycles. Use Value: 3mV max offset and 10μV/°C drift ensure reference accuracy remains within ±0.06% over 0°C–70°C operating range. |
Use Scenario: Amplifying mV-level shunt voltage in motor driver or power supply output stage. IC Role / Device Role / Timing Role: High-common-mode rejection amplifier measuring voltage across ground-referenced sense resistor. Use Value: Rail-to-rail input enables direct sensing at 0V common-mode; 65dB CMRR rejects PWM noise coupling into shunt node. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34074DR2G | Higher 13V/μs slew rate but 10mV max offset; no guaranteed 4.5MHz GBW at 0°C–70°C | Better for high-speed pulse amplification; less suitable for precision DC-coupled sensing | Select when speed dominates over DC accuracy; verify layout for higher EMI susceptibility |
| LM324DT | Lower 1.2MHz GBW, 0.5V/μs slew rate, 7mV max offset; wider temp range (−40°C to 105°C) | Cost-optimized general-purpose use; insufficient for >100kHz closed-loop bandwidth needs | Choose for non-critical industrial controls where bandwidth and noise are secondary to cost and availability |
Compared with MC34074DR2G and LM324DT, TL3474CPW uniquely balances 4.5MHz bandwidth, sub-3mV offset, and ground-sensing capability in a compact TSSOP-14 package - making it optimal for space-constrained, precision analog front-ends where both AC fidelity and DC accuracy are required.
Availability
TL3474CPW is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, ADC driver amplifiers, and low-side current sensing applications requiring stable component supply and long-term industrial lifecycle support.
Supply support for TL3474CPW 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 requiring robust single-supply operation, low offset, and wide bandwidth - targeting programmable logic controllers, test equipment, and sensor interface modules.
FAQ
What is the operating temperature range for TL3474CPW?
The TL3474CPW is rated for 0°C to 70°C ambient operating temperature. This commercial-grade specification aligns with its "C" suffix designation and is validated per TI's Recommended Operating Conditions table. The device maintains specified electrical performance-including 3mV max input offset and 4.5MHz gain-bandwidth-across this full range, making TL3474CPW suitable for indoor industrial control panels and benchtop instrumentation where ambient thermal management is controlled.
Does TL3474CPW support true rail-to-rail output swing?
No, TL3474CPW does not provide rail-to-rail output swing. Its output voltage swing is limited to approximately 1.2V from each rail under 2kΩ load, as specified in the Electrical Characteristics table (e.g., VOH = 13.6V min at VCC+ = 15V). However, TL3474CPW does feature rail-to-rail *input* common-mode range-including ground-which is essential for low-side sensing and single-supply interfacing. For full rail-to-rail output, consider newer TI devices like TLV9064.
Is TL3474CPW pin-compatible with other TL3474 variants in TSSOP-14?
Yes, TL3474CPW shares identical pinout and footprint with TL3474CPWR, TL3474ACPWR, and TL3474AIPWR - all use the PW (TSSOP-14) package with 0.65mm pitch and Q1 pin-1 quadrant orientation. Mechanical drawings and tape-and-reel specifications confirm consistent land pattern requirements. However, note that TL3474CPW is marked as Obsolete in TI's packaging addendum, while TL3474CPWR is Active - design reuse requires verification of supply chain availability and qualification status.
What is the maximum capacitive load TL3474CPW can drive stably?
TL3474CPW is characterized for stable operation with up to 300pF capacitive load, as confirmed by Phase Margin = 50° in the Operating Characteristics table (RL = 2kΩ, CL = 300pF). Driving larger loads (e.g., >500pF) risks peaking or oscillation due to reduced phase margin. For ADC driver applications, a series resistor (e.g., 20Ω–50Ω) between TL3474CPW output and ADC input capacitance is recommended to isolate the capacitive load and preserve stability without degrading bandwidth.
How does the "old die" vs "new die" transition affect TL3474CPW performance?
TL3474CPW uses the "new die" fabrication (CSO = RFB), introduced in Revision C of the datasheet. Key improvements include lower input bias current (0.01nA typ vs previous 500nA), reduced input voltage noise (10.8nV/√Hz vs 49nV/√Hz), and tighter offset voltage distribution. All published specifications for TL3474CPW reflect new-die performance; legacy "old die" data is retained only for historical comparison and does not apply to TL3474CPW units shipped after June 2026.
TL3474CPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
TL3474CPW FAQ
1.How can I place an order for TL3474CPW through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474CPW 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 TL3474CPW reliable?
The price and inventory of TL3474CPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474CPW is usually 5 days.
3.What payment methods are accepted for TL3474CPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474CPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474CPW?
TL3474CPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474CPW 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 TL3474CPW?
For technical support, including TL3474CPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474CPW requirements.
6.How does Aetrix verify that TL3474CPW is sourced from the original manufacturer or authorized distributors?
All TL3474CPW 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 TL3474CPW meets industry standards.
7.What is the process for return or replacement of TL3474CPW?
All TL3474CPW units undergo pre-shipment inspection (PSI). If there is an issue with TL3474CPW, 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 TL3474CPW part is unused and in its original packaging.
Return procedure for TL3474CPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL3474CPW Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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