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Texas Instruments TL3474AIPWR
- Part No.:
- TL3474AIPWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TL3474AIPWR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,667
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Product details
Overview
TL3474AIPWR 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 programmable logic controller analog front-ends.
For engineers reviewing the TL3474AIPWR datasheet, TL3474AIPWR pinout, TL3474AIPWR application, or TL3474AIPWR equivalent, key selection criteria include guaranteed A-grade offset performance, wide single-supply voltage range, output short-circuit protection, and compatibility with multiplexed data-acquisition systems requiring four independent amplifiers in compact TSSOP-14 packaging.
Technical Context
The TL3474AIPWR employs bipolar fabrication optimized for precision single-supply operation: its input stage supports common-mode voltage down to VCC− (ground), enabling direct interfacing with sensors and ADCs without level-shifting. It features internal frequency compensation for unity-gain stability and includes output short-circuit protection across all four channels.
Designed as an A-grade variant of the TL3474 family, it guarantees ≤3mV input offset voltage at 25°C and −40°C to +105°C operating temperature range. Its 10V/μs positive slew rate and 13V/μs negative slew rate support fast transient response in dynamic signal conditioning applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - ensures stable closed-loop operation up to 100kHz with gain ≥45, suitable for anti-aliasing and buffer stages in 100kSPS+ data acquisition |
| Input offset voltage (max) | 3mV - enables accurate DC-coupled amplification of mV-level sensor signals without calibration in industrial PLC inputs |
| Supply voltage range | 4V to 36V - supports direct connection to 5V, 12V, 24V, and 32V industrial rails without external regulators |
| Slew rate (SR+ / SR−) | 10V/μs / 13V/μs - allows clean 10Vpp step response within 2μs to 0.1%, critical for driving SAR ADC reference inputs |
| Input common-mode range | VCC− to (VCC+ − 2.2V) - includes ground, permitting direct sensing of low-side shunt voltages without bias networks |
| Output short-circuit current | ±75mA - provides robust fault tolerance during overloads in motor control feedback paths or actuator drivers |
| Quiescent current (per channel) | 0.56mA - enables low-power operation in battery-backed instrumentation while maintaining 4.5MHz bandwidth |
Pinout & Package
TSSOP-14 package (5.00mm × 6.40mm body, 0.65mm pitch), 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 | Amplified output of first op-amp; capable of sourcing/sinking ±75mA into loads down to 2kΩ |
| 1IN– | Inverting input channel 1 | Differential input node for channel 1; supports common-mode voltage down to VCC− (ground) |
| 1IN+ | Non-inverting input channel 1 | Differential input node for channel 1; matched impedance to 1IN– for optimal CMRR |
| VCC+ | Positive supply voltage | Main power rail; accepts 4V–36V; decoupling required within 10mm of pin for stability |
| 2IN+ | Non-inverting input channel 2 | Independent input for second op-amp; electrically isolated from other channels |
| 2IN– | Inverting input channel 2 | Independent input for second op-amp; shares no internal nodes with other channels |
| 2OUT | Output channel 2 | Amplified output of second op-amp; identical specs to 1OUT |
| 3OUT | Output channel 3 | Amplified output of third op-amp; fully independent, same drive capability and bandwidth |
| 3IN– | Inverting input channel 3 | Input for third op-amp; supports same common-mode range and input bias current (0.01nA typ) |
| 3IN+ | Non-inverting input channel 3 | Input for third op-amp; matched to 3IN– for consistent CMRR and offset behavior |
| VCC– / GND | Negative supply or ground | Reference return for all four amplifiers; must be low-impedance path to minimize crosstalk |
| 4IN+ | Non-inverting input channel 4 | Input for fourth op-amp; enables simultaneous processing of four analog signals on one IC |
| 4IN– | Inverting input channel 4 | Input for fourth op-amp; supports differential configurations without external resistors |
| 4OUT | Output channel 4 | Final amplified output; completes quad-channel functionality in space-constrained TSSOP footprint |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation from 4V to 36V | Eliminates need for dual-rail supplies in industrial sensors and PLC I/O modules, reducing BOM count and layout complexity |
| Input common-mode range includes ground | Enables direct connection to low-side current-sense shunts and grounded thermocouples without input biasing networks |
| A-grade 3mV max input offset voltage | Guarantees accuracy in precision measurement paths where offset drift would otherwise require periodic calibration |
| Output short-circuit protection | Prevents latch-up or permanent damage when outputs are inadvertently shorted to supply or ground during system integration |
| Quad-channel configuration in TSSOP-14 | Provides four independent amplifiers in 32mm² footprint-40% smaller than equivalent SOIC-14 solutions for dense PCB layouts |
Applications
| Multiplexed Data Acquisition | SAR ADC Reference Buffer |
|---|---|
Use Scenario: Simultaneous sampling of multiple sensor channels using analog multiplexer before digitization. IC Role / Device Role / Timing Role: Four independent op-amps condition each sensor signal (gain, filtering, level-shifting) prior to mux input. Use Value: Eliminates four discrete op-amps, reduces board area by >50%, and ensures matched AC/DC performance across channels. | Use Scenario: Driving the reference input of a 16-bit SAR ADC in high-precision measurement equipment. IC Role / Device Role / Timing Role: Low-noise, low-output-impedance buffer isolating reference voltage source from ADC switching transients. Use Value: 10.8nV/√Hz input noise and 525Ω open-loop output impedance ensure <0.5LSB error at full-scale resolution. |
| Low-Side Current Sensing | Programmable Logic Controller Analog Input |
Use Scenario: Measuring motor phase current via shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: Single op-amp configured as non-inverting amplifier with gain ≥20 to amplify mV-level shunt voltage. Use Value: Rail-to-rail input including ground enables direct sensing without level-shifting; 3mV offset limits measurement error to <0.15% at 20A full scale. | Use Scenario: Conditioning 4–20mA loop signals and thermocouple outputs in industrial PLC backplanes. IC Role / Device Role / Timing Role: Quad op-amp performs simultaneous signal conditioning: I/V conversion, cold-junction compensation, filtering, and output buffering. Use Value: Guaranteed −40°C to +105°C operation and 4.5MHz bandwidth support real-time analog processing in harsh environments. |
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 (≤10mV offset), 0°C to 70°C temp range, same pinout and electrical specs except offset and temp rating | Suitable for commercial-grade instrumentation where extended temperature range and tighter offset are not required | Select TL3474CPWR only if cost sensitivity outweighs need for A-grade accuracy and industrial temperature support |
| MC34074APW | Legacy part with 3.5MHz GBW, 5mV max offset, no guaranteed A-grade spec; identical TSSOP-14 footprint | Compatible in legacy designs but lacks guaranteed 4.5MHz bandwidth and 3mV offset for new high-accuracy implementations | Use MC34074APW only for drop-in replacement in existing boards; avoid for new designs requiring A-grade performance |
Compared with TL3474CPWR and MC34074APW, TL3474AIPWR delivers verified A-grade offset and extended temperature operation-critical for industrial PLC analog inputs and precision data acquisition where calibration intervals must exceed 12 months.
Availability
TL3474AIPWR is available at Aetrix Electronics and suitable for programmable logic controllers, SAR ADC reference buffering, and low-side current sensing requiring stable component supply across automotive, industrial automation, and test equipment programs.
Supply support for TL3474AIPWR 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-grade signal chain components.
The TL3474A series belongs to TI's general-purpose precision op-amp portfolio, designed specifically for single-supply industrial measurement and control applications demanding wide voltage range, ground-sensing capability, and guaranteed A-grade specifications.
FAQ
What is the maximum operating temperature range for TL3474AIPWR?
The TL3474AIPWR is rated for operation from −40°C to +105°C, making it suitable for industrial environments such as programmable logic controllers and motor drives where ambient temperatures exceed standard commercial ranges. This specification is guaranteed per the device's "I" temperature grade designation and confirmed in the Recommended Operating Conditions table of the official datasheet.
Does TL3474AIPWR support true rail-to-rail input?
TL3474AIPWR supports rail-to-rail input common-mode range down to VCC− (ground), but not up to VCC+. Its common-mode input range extends to (VCC+ − 2.2V) at ±15V supply, meaning it does not accept inputs at the positive rail. This design enables robust low-side sensing while maintaining bipolar process advantages like low noise and high slew rate.
Can TL3474AIPWR drive capacitive loads directly?
TL3474AIPWR is internally compensated for unity-gain stability with resistive loads, but driving capacitive loads >300pF may cause peaking or oscillation. The datasheet specifies phase margin of 50° with 300pF load; for larger capacitors, external isolation resistance (e.g., 10Ω–100Ω in series with output) is recommended to maintain stability in SAR ADC reference buffer applications.
What is the part marking on TL3474AIPWR physical units?
Each TL3474AIPWR device is laser-marked with "Z3474A" on the top surface, as specified in TI's Packaging Information documentation. This marking distinguishes it from commercial-grade variants (e.g., TL3474CPWR marked "T3474") and high-temp variants (e.g., TL3474AIDR marked "TL3474AI"), ensuring traceability and correct field identification.
Is TL3474AIPWR pin-compatible with TL3474CPWR?
Yes, TL3474AIPWR and TL3474CPWR share identical TSSOP-14 pinout, package dimensions, and thermal characteristics. Both use PW package drawing with 0.65mm pitch and 5.00mm × 6.40mm body size. However, TL3474AIPWR adds extended temperature range (−40°C to +105°C vs. 0°C to 70°C) and tighter A-grade offset specification (≤3mV vs. ≤10mV), making it a functional upgrade without layout changes.
TL3474AIPWR 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:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
TL3474AIPWR FAQ
1.How can I place an order for TL3474AIPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474AIPWR 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 TL3474AIPWR reliable?
The price and inventory of TL3474AIPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474AIPWR is usually 5 days.
3.What payment methods are accepted for TL3474AIPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474AIPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474AIPWR?
TL3474AIPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474AIPWR 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 TL3474AIPWR?
For technical support, including TL3474AIPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474AIPWR requirements.
6.How does Aetrix verify that TL3474AIPWR is sourced from the original manufacturer or authorized distributors?
All TL3474AIPWR 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 TL3474AIPWR meets industry standards.
7.What is the process for return or replacement of TL3474AIPWR?
All TL3474AIPWR units undergo pre-shipment inspection (PSI). If there is an issue with TL3474AIPWR, 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 TL3474AIPWR part is unused and in its original packaging.
Return procedure for TL3474AIPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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