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Texas Instruments TL3472IDR
- Part No.:
- TL3472IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL3472IDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,243
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Product details
Overview
TL3472IDR from Texas Instruments is a dual, high-slew-rate operational amplifier optimized for single-supply operation across 4V to 36V, delivering 4.5MHz gain-bandwidth product, 2μs settling time to 0.1%, and rail-to-rail input common-mode range including ground - used in industrial sensor signal conditioning, precision power supply feedback, and analog front-end stages.
For engineers reviewing the TL3472IDR datasheet, TL3472IDR pinout, TL3472IDR application, or TL3472IDR equivalent, this page provides verified pin functions, real-world design meaning of key specs (e.g., 10V/μs slew rate enabling fast pulse amplification), thermal limits for SOIC-8 layout, and validated alternative options for cost- or temperature-range-sensitive designs.
Technical Context
The TL3472IDR implements a bipolar-input, dual-channel op-amp architecture with differential input stage featuring 540GΩ input resistance and 10pF input capacitance. Its internal compensation ensures stable unity-gain operation with ≥50° phase margin at 300pF load.
It supports true single-supply operation: input common-mode range extends to VCC− (ground), output swings within 0.3V of rails under 2kΩ load, and short-circuit protection limits output current to ±75mA without latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - sets maximum closed-loop bandwidth at unity gain; enables stable 100kHz operation at gain=45. |
| Slew rate (positive) | 10V/μs - supports clean amplification of 1MHz, 10Vpp square waves without distortion. |
| Settling time to 0.1% | 2μs - meets timing requirements for 500ksps data acquisition systems with 12-bit accuracy. |
| Input offset voltage | 1.0mV (typ) at ±15V - contributes ≤0.01% error in 10V full-scale precision measurement circuits. |
| Supply voltage range | 4V to 36V single supply - eliminates need for negative rail in battery-powered or 24V industrial systems. |
| Operating temperature | –40°C to +105°C - qualified for extended-temperature industrial control and motor drive applications. |
| Input bias current | 0.01nA (typ) - allows use with high-impedance sources (e.g., pH electrodes, piezoelectric sensors) without significant error. |
Pinout & Package
TL3472IDR is housed in an 8-pin SOIC (D) package measuring 4.9mm × 3.9mm with 1.27mm lead pitch and 1.75mm max height, compliant with JEDEC MS-012AA and RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output 1 | Amplified signal from Channel 1; capable of ±75mA short-circuit current with thermal foldback. |
| 1IN– | Inverting input | Differential input node for Channel 1; accepts signals down to VCC− (ground) in single-supply mode. |
| 1IN+ | Non-inverting input | Differential input node for Channel 1; shares same common-mode range and input impedance as 1IN–. |
| GND | Ground reference | Return path for both channels; serves as VCC− in single-supply configurations (e.g., VCC+ = 5V, GND = 0V). |
| 2IN+ | Non-inverting input | Independent input for Channel 2; electrically isolated from Channel 1 with 101dB channel separation at 10kHz. |
| 2IN– | Inverting input | Independent input for Channel 2; identical electrical characteristics to 1IN– and 1IN+. |
| 2OUT | Output 2 | Amplified signal from Channel 2; fully independent output stage with same drive capability as 1OUT. |
| VCC+ | Positive supply | Single positive rail connection; supports up to 36V; no negative supply required when GND is used as VCC−. |
Key Features
| Feature | Design Value |
|---|---|
| Wide single-supply range | 4V to 36V operation enables direct interface with 5V microcontrollers, 12V/24V PLCs, and battery-backed systems without level-shifting. |
| Rail-to-rail input common-mode | Includes ground (VCC−), allowing direct sensing of 0V-referenced signals like thermocouple outputs or current-shunt voltages. |
| High input resistance | 540GΩ minimizes loading on high-impedance transducers (e.g., photodiode amps, capacitive sensors), preserving signal integrity. |
| Low input noise | 10.8nV/√Hz at 1kHz supports low-noise amplification in precision instrumentation and medical sensor front-ends. |
| Output short-circuit protection | Self-limiting ±75mA output current prevents damage during accidental shorts or capacitive load instability events. |
Applications
| Industrial Sensor Signal Conditioning | Precision Power Supply Feedback |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from RTDs, strain gauges, or pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with matched gain paths and low drift over –40°C to +105°C. Use Value: 1.0mV typical input offset and 10μV/°C drift ensure ≤0.1% measurement error across full industrial temperature range. |
Use Scenario: Closed-loop voltage regulation in programmable DC supplies and motor drive power stages. IC Role / Device Role / Timing Role: Error amplifier comparing sensed output to reference; requires fast response to load transients. Use Value: 10V/μs slew rate and 2μs settling enable sub-5μs correction of 10% load steps, maintaining <1% output deviation. |
| Analog Front-End for Data Acquisition | Active Filter Stages |
|
Use Scenario: Anti-aliasing and gain-stage filtering before SAR ADCs in industrial IoT edge nodes. IC Role / Device Role / Timing Role: Dual-channel configurable filter driver with unity-gain stability and 4.5MHz bandwidth. Use Value: 50° phase margin at 300pF load ensures robust performance driving ADC input capacitance without peaking or oscillation. |
Use Scenario: Implementing 2nd-order Sallen-Key or state-variable filters in audio and signal processing modules. IC Role / Device Role / Timing Role: High-fidelity gain block with low THD and wide bandwidth supporting filter Q-factor control. Use Value: 85kHz power bandwidth at 20Vpp output ensures flat frequency response through 20kHz audio band with <0.1% distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34072DR2G | Lower gain-bandwidth (1.8MHz), higher input offset (3mV typ), no guaranteed 0.1% settling spec. | Better suited for general-purpose DC-coupled amplification where speed is secondary to cost. | Select MC34072DR2G only if bandwidth <2MHz and temperature range ≤85°C suffice; not drop-in for TL3472IDR's 4.5MHz/105°C requirements. |
| LM2904BIDR | Lower slew rate (0.3V/μs), wider input offset range (±7mV), but improved EMI immunity and lower quiescent current (0.35mA/ch). | Preferred for automotive body electronics and low-power sensor interfaces where speed is not critical. | LM2904BIDR replaces TL3472IDR only in non-time-critical, low-speed analog stages; cannot support 2μs settling or 10V/μs transient response. |
Compared with MC34072DR2G and LM2904BIDR, the TL3472IDR delivers 2.5× higher bandwidth and 30× faster settling-making it uniquely suitable for industrial DAQ, fast feedback loops, and wide-dynamic-range sensor interfaces where timing fidelity and temperature robustness are mandatory.
Availability
TL3472IDR is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, precision power supply feedback, and analog front-end for data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL3472IDR 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, embedded processing, and digital signal technologies with over 50 years of innovation in high-reliability analog ICs.
The TL3472IDR belongs to TI's legacy precision op-amp family designed specifically for industrial-grade dual-amplifier applications demanding wide supply range, ground-sensing inputs, and robust thermal performance.
FAQ
What is the maximum operating junction temperature for TL3472IDR?
The TL3472IDR has a maximum operating virtual junction temperature (TJ) of 150°C, as specified in its absolute maximum ratings. This limit applies regardless of ambient conditions and must be respected via thermal design - for example, using the SOIC-8 package's 130.7°C/W θJA to calculate allowable power dissipation at target ambient temperatures. The TL3472IDR's rated operating range is –40°C to +105°C ambient, ensuring reliable function well below the TJ limit under normal PCB layout and airflow conditions.
Does TL3472IDR support true rail-to-rail output swing?
The TL3472IDR does not provide rail-to-rail output swing. Its output voltage swing is specified as 0.005V to 4.8V (with VCC+ = 5V, VCC– = 0V, RL = 2kΩ), meaning it can drive within ~5mV of ground but only to ~0.2V below VCC+. Under heavier loads (RL = 2kΩ), the low-level output reaches 0.3V and high-level output drops to 4.8V. This limited output swing is typical of bipolar-output op-amps and must be accounted for in precision single-supply designs where headroom is constrained.
Can TL3472IDR operate with a single 5V supply?
Yes, TL3472IDR is explicitly designed for single-supply operation from 4V to 36V. With a 5V supply (VCC+ = 5V, GND = 0V), its input common-mode range includes ground (0V), enabling direct interface with 0V-referenced sensors. Output swing spans ~0.005V to 4.8V into 2kΩ, and all electrical characteristics - including 4.5MHz GBW and 10V/μs slew rate - are validated under these conditions per the datasheet's recommended operating conditions and electrical characteristics tables.
How does TL3472IDR differ from the TL3472CDR variant?
The TL3472IDR differs from TL3472CDR solely in its temperature rating: TL3472IDR is specified for –40°C to +105°C operation, while TL3472CDR is rated for 0°C to +70°C. Both share identical SOIC-8 (D) packaging, pinout, electrical parameters (gain-bandwidth, slew rate, input offset), and functional behavior. The "I" grade undergoes extended temperature screening and is intended for industrial and harsh-environment applications where ambient extremes exceed commercial-grade limits.
Is TL3472IDR pin-compatible with MC33072 or MC34072?
Yes, TL3472IDR is pin-compatible with MC33072 and MC34072 in the SOIC-8 (D) and PDIP-8 (P) packages - all three devices share identical pin numbering, pin functions, and footprint dimensions. However, TL3472IDR offers superior performance: 4.5MHz GBW vs. 1.8MHz (MC34072), 10V/μs slew rate vs. 1.7V/μs, and 2μs settling vs. no published 0.1% spec for the MC-series. Electrical substitution is feasible, but full functional equivalence requires verifying system-level timing and accuracy requirements against TL3472IDR's enhanced specs.
TL3472IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 Channels)
- Current - Output / Channel:
- 34 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL3472IDR FAQ
1.How can I place an order for TL3472IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3472IDR 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 TL3472IDR reliable?
The price and inventory of TL3472IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3472IDR is usually 5 days.
3.What payment methods are accepted for TL3472IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3472IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3472IDR?
TL3472IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3472IDR 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 TL3472IDR?
For technical support, including TL3472IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3472IDR requirements.
6.How does Aetrix verify that TL3472IDR is sourced from the original manufacturer or authorized distributors?
All TL3472IDR 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 TL3472IDR meets industry standards.
7.What is the process for return or replacement of TL3472IDR?
All TL3472IDR units undergo pre-shipment inspection (PSI). If there is an issue with TL3472IDR, 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 TL3472IDR part is unused and in its original packaging.
Return procedure for TL3472IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL3472IDR Tags
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