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Texas Instruments TL3472ID
- Part No.:
- TL3472ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL3472ID.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,061
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Product details
Overview
TL3472ID from Texas Instruments is a dual, high-slew-rate operational amplifier optimized for single-supply operation across 4V to 36V, featuring 4.5MHz gain-bandwidth product, 2μs settling time to 0.1%, and rail-to-rail input common-mode range including ground - used in precision sensor signal conditioning, industrial analog front-ends, and power supply monitoring circuits.
For engineers reviewing the TL3472ID datasheet, TL3472ID pinout, TL3472ID application, or TL3472ID equivalent, this page delivers verified electrical specifications, SOIC-8 package layout, real-world use cases, and validated alternative options for industrial temperature-range op-amp selection.
Technical Context
The TL3472ID implements a bipolar-input dual op-amp architecture with differential input resistance of 540GΩ and low input bias current (0.01nA typ), enabling high-impedance source interfacing. Its ±15V dual-supply or 4–36V single-supply operation supports wide dynamic range without level-shifting circuitry.
It delivers 8V/μs positive and 13V/μs negative slew rates, 10.8nV/√Hz input voltage noise, and 2fA/√Hz input current noise - making it suitable for medium-speed, low-noise amplification where DC precision and transient fidelity are both critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - supports stable unity-gain buffer or closed-loop gain ≥2 up to ~2MHz without phase margin degradation. |
| Settling time to 0.1% | 2μs - enables accurate sampling of 100kHz+ step signals in data acquisition systems. |
| Supply voltage range | 4V to 36V single-supply - eliminates need for negative rail in battery-powered or industrial 24V systems. |
| Input common-mode range | Includes VCC− (ground) - allows direct sensing of 0V-referenced sensors like thermocouples or current shunts. |
| Output short-circuit protection | Internally limited to ±75mA - prevents latch-up or thermal runaway during fault conditions. |
| Operating temperature | −40°C to +105°C - qualified for extended industrial environments without derating. |
| Input offset voltage | 1.0mV typ at ±15V - ensures ≤10mV error in 10V full-scale measurement without trimming. |
Pinout & Package
TL3472ID is packaged in an 8-pin SOIC (D package), 4.9mm × 3.9mm body size, 1.75mm max height, with standard JEDEC MS-012AA footprint and lead finish NIPDAU. RoHS-compliant, MSL Level-1, tape-and-reel (2500 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output 1 | Amplified output of Channel 1; capable of sourcing/sinking ±75mA with short-circuit protection. |
| 1IN– | Inverting input | High-impedance (540GΩ) node for feedback network connection in inverting configurations. |
| 1IN+ | Non-inverting input | DC-coupled input accepting voltages from VCC− (ground) to VCC+ − 2.2V; no level shift required. |
| GND | Ground reference | Common return for both channels; serves as VCC− in single-supply operation. |
| 2IN+ | Non-inverting input | Independent input for Channel 2; shares same common-mode range and bias specs as Channel 1. |
| 2IN– | Inverting input | Separate high-Z input for Channel 2 feedback; enables dual independent amplification paths. |
| 2OUT | Output 2 | Second independent output; electrically isolated from Channel 1 except via shared supply rails. |
| VCC+ | Positive supply | Single positive rail (4–36V); no VCC− pin required - GND serves as negative reference. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation from 4V | Enables direct interface with 3.3V/5V microcontrollers and 24V industrial buses without charge pumps or split supplies. |
| Input range includes ground | Eliminates need for external biasing networks when amplifying unipolar sensor outputs (e.g., RTDs, strain gauges). |
| Low input offset drift | 10μV/°C max ensures <±0.5mV total offset shift over −40°C to +105°C - critical for uncalibrated systems. |
| High CMRR (65dB min) | Rejects common-mode noise on long sensor cables in noisy factory environments (e.g., motor drives, PLC I/O). |
| Fast settling with low overshoot | 2μs to 0.1% with minimal ringing supports 500ksps ADC driving without post-processing correction. |
Applications
| Industrial Sensor Signal Conditioning | Power Supply Monitoring |
|---|---|
|
Use Scenario: Amplifying low-level mV outputs from load cells and pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with matched gain stages and shared supply rejection. Use Value: Input common-mode range down to ground allows direct connection to ratiometric bridge sensors powered from same 24V rail - reducing component count by two bias resistors per channel. |
Use Scenario: Real-time monitoring of 12V/24V DC bus voltage and current in programmable logic controllers. IC Role / Device Role / Timing Role: Precision comparator input buffer and current-sense amplifier with fast transient response. Use Value: 2μs settling time enables detection of sub-millisecond overvoltage events before downstream protection triggers - improving system fault coverage. |
| Motor Control Feedback Loop | Medical Instrumentation Front-End |
|
Use Scenario: Isolating and scaling encoder quadrature signals and analog tachometer outputs in servo drives. IC Role / Device Role / Timing Role: High-speed differential line receiver and analog integrator in position loop compensation. Use Value: 4.5MHz GBW supports closed-loop bandwidth >100kHz while maintaining >70° phase margin - essential for stable torque control under variable inertia. |
Use Scenario: Low-noise amplification of ECG electrode signals in portable patient monitors. IC Role / Device Role / Timing Role: First-stage biopotential amplifier with DC-coupled input and high input impedance. Use Value: 10.8nV/√Hz input voltage noise and 2fA/√Hz current noise preserve microvolt-level cardiac signals without requiring guard traces or ultra-low-leakage PCB materials. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL3472IDR | Same die, identical electrical specs, SOIC-8 packaging, active status, 2500-piece tape-and-reel - differs only in ordering suffix and lifecycle status. | No functional difference; TL3472ID is obsolete per TI's addendum, while TL3472IDR is active production with guaranteed supply. | Select TL3472IDR for new designs to ensure long-term availability and avoid obsolescence risk. |
| MC34072DR2G | Lower GBW (1.8MHz), higher input offset (3mV max), wider temp range (−40°C to +125°C), but no internal short-circuit protection. | Better suited for high-temp automotive engine control modules where thermal margin outweighs speed requirements. | Choose MC34072DR2G only if operating above +105°C is required and 2μs settling is not critical. |
Compared with TL3472ID, TL3472IDR offers identical performance with assured supply continuity, while MC34072DR2G trades speed and protection for extended temperature capability - making TL3472IDR the direct design replacement and MC34072DR2G a conditional alternative for thermal-limited use cases.
Availability
TL3472ID is available at Aetrix Electronics and suitable for industrial sensor interfaces, power supply supervision, and motor control feedback loops requiring stable component supply across extended temperature ranges.
Supply support for TL3472ID 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 90 years of innovation in precision analog design.
The TL3472ID belongs to TI's legacy general-purpose op-amp family, engineered for cost-sensitive industrial applications demanding robust single-supply operation, moderate speed, and DC accuracy without trimming.
FAQ
What is the maximum supply voltage for TL3472ID?
The TL3472ID supports a recommended operating supply voltage range of 4V to 36V for single-supply use, with absolute maximum ratings specifying ±18V on VCC+ and VCC−. Exceeding 36V total differential supply risks permanent damage per Section 4.1 of the SLOS200H datasheet. For reliable long-term operation, stay within the 4–36V window.
Does TL3472ID support true rail-to-rail output swing?
No, TL3472ID does not provide rail-to-rail output. At VCC+ = 5V and RL = 2kΩ, its high-level output voltage is 3.7V min (1.3V below rail), and low-level is 0.005V min (5mV above ground). Output swing is load-dependent and improves with higher supply voltages - e.g., at ±15V, VOL is −14.8V and VOH is +14.8V.
Is TL3472ID pin-compatible with TL3472CD?
Yes, TL3472ID is pin-compatible with TL3472CD - both use the same SOIC-8 (D) package and identical pinout per Table 3-1. However, TL3472ID is rated for −40°C to +105°C operation, whereas TL3472CD is specified for 0°C to +70°C. Electrical parameters (e.g., input offset, supply current) are identical across temperature ranges defined for each grade.
What is the input bias current specification for TL3472ID?
The TL3472ID has a typical input bias current of 0.01nA at 25°C, with a maximum of 700nA across its full operating temperature range (−40°C to +105°C). This ultra-low bias current enables high-impedance sensor interfacing (e.g., pH electrodes, photodiodes) without significant voltage error from leakage paths.
Can TL3472ID drive capacitive loads directly?
The TL3472ID exhibits a phase margin of 50° with 300pF capacitive load (per Section 4.4), indicating marginal stability. Driving >100pF loads directly may cause ringing or oscillation. For capacitive loads >100pF, TI recommends adding a series resistor (≥100Ω) between the output and load to isolate capacitance and restore stability.
TL3472ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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
TL3472ID FAQ
1.How can I place an order for TL3472ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3472ID 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 TL3472ID reliable?
The price and inventory of TL3472ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3472ID is usually 5 days.
3.What payment methods are accepted for TL3472ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3472ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3472ID?
TL3472ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3472ID 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 TL3472ID?
For technical support, including TL3472ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3472ID requirements.
6.How does Aetrix verify that TL3472ID is sourced from the original manufacturer or authorized distributors?
All TL3472ID 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 TL3472ID meets industry standards.
7.What is the process for return or replacement of TL3472ID?
All TL3472ID units undergo pre-shipment inspection (PSI). If there is an issue with TL3472ID, 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 TL3472ID part is unused and in its original packaging.
Return procedure for TL3472ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL3472ID Tags
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LM358DT
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LM358DR
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MCP6006UT-E/OT
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