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Texas Instruments TL3472CDR
- Part No.:
- TL3472CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL3472CDR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,219
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Product details
Overview
TL3472CDR from Texas Instruments is a dual, high-slew-rate operational amplifier optimized for single-supply operation from 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 process control interfaces, and analog front-end stages of data acquisition systems.
For engineers reviewing the TL3472CDR datasheet, TL3472CDR pinout, TL3472CDR application, or TL3472CDR equivalent, key selection criteria include single-supply compatibility down to 4V, guaranteed 0.1% settling performance, output short-circuit protection, low input offset voltage (1.5mV typ), and SOIC-8 packaging with JEDEC-standard thermal characteristics.
Technical Context
The TL3472CDR implements a bipolar-input op-amp architecture with differential input stage enabling wide common-mode range (VCC− to VCC+ − 2.2V) and high open-loop gain (25 V/mV min). Its internal compensation ensures stable unity-gain operation with ≥50° phase margin at 300pF capacitive load.
It supports dual-channel independent operation with no crosstalk degradation (101dB channel separation at 10kHz), and features matched input bias currents (0.01nA typ) and ultra-high input resistance (540GΩ) - critical for high-impedance source interfacing in instrumentation amplifiers and transducer signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - enables stable closed-loop gain up to 45 at 100kHz for anti-aliasing filter design |
| Settling time (0.1%) | 2μs - supports 500ksps sampling in multiplexed ADC driver applications |
| Supply voltage range | 4V to 36V single supply - eliminates need for negative rail in PLC I/O modules and 24V industrial sensors |
| Input offset voltage | 1.5mV (typ) - ensures ≤0.03% full-scale error in 5V-range 12-bit DAC output buffers |
| Slew rate (positive) | 8V/μs (min) - sustains 10Vpp output at 1MHz without distortion in active filter stages |
| Common-mode input range | VCC− to VCC+ − 2.2V - allows direct connection to grounded thermocouple or bridge sensor outputs |
| Output short-circuit current | ±75mA - provides robust fault tolerance during transient overloads in motor control feedback paths |
Pinout & Package
TL3472CDR is housed in an 8-pin SOIC (D) package measuring 4.9mm × 3.9mm with 1.27mm pitch, JEDEC MS-012 compliant, MSL Level-1, and NIPDAU lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output 1 | Amplified output of Channel 1; capable of sourcing/sinking ±75mA into resistive loads |
| 1IN– | Inverting input | Differential input node for Channel 1; high-impedance (540GΩ) with 10pF capacitance |
| 1IN+ | Non-inverting input | Differential input node for Channel 1; accepts signals down to VCC− (ground in single-supply mode) |
| GND | Ground reference | Return path for both channels; must be low-impedance to maintain CMRR >65dB |
| 2IN+ | Non-inverting input | Differential input node for Channel 2; electrically isolated from Channel 1 with 101dB separation |
| 2IN– | Inverting input | Differential input node for Channel 2; matched bias current (0.01nA typ) to 1IN– for common-mode rejection |
| 2OUT | Output 2 | Amplified output of Channel 2; independently short-circuit protected per channel |
| VCC+ | Positive supply | Single positive rail input (4V–36V); no negative supply required for functional operation |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Operates from 4V to 36V with input common-mode range extending to VCC−, eliminating level-shifting circuitry in 5V/12V/24V systems |
| High slew rate | 8V/μs minimum positive slew rate enables clean 10Vpp square-wave reproduction at 1MHz for active filter and comparator interface use |
| Low input offset voltage | 1.5mV typical offset minimizes DC error in precision gain stages, reducing calibration burden in medical sensor front-ends |
| Output short-circuit protection | Internal current limiting prevents latch-up or destruction during accidental output shorts in motor drive feedback loops |
| Ultra-high input resistance | 540GΩ differential input resistance preserves signal integrity when driving from high-impedance sources like piezoelectric sensors |
Applications
| Industrial Sensor Signal Conditioning | Programmable Logic Controller (PLC) Analog Input Modules |
|---|---|
Use Scenario: Amplifying low-level mV-range outputs from RTDs, strain gauges, or thermocouples in factory-floor environments with 24V supply rails. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end with matched gain paths and ground-referenced inputs. Use Value: Eliminates external level-shifting components by accepting inputs down to ground while maintaining 65dB CMRR across temperature. | Use Scenario: Buffering and scaling 4–20mA loop receiver outputs before ADC conversion in modular I/O cards. IC Role / Device Role / Timing Role: Precision voltage follower and gain-stage amplifier with fast settling for multiplexed channel scanning. Use Value: 2μs 0.1% settling enables 500ksps effective sampling rate across 8-channel analog input banks. |
| Medical Instrumentation Front-Ends | Automated Test Equipment (ATE) Signal Sources |
Use Scenario: Conditioning biopotential signals (ECG, EEG) where input impedance >100MΩ and DC accuracy are critical. IC Role / Device Role / Timing Role: High-Z non-inverting amplifier stage with ultra-low input bias current (0.01nA typ). Use Value: 540GΩ input resistance prevents signal attenuation and baseline drift in dry-electrode patient monitoring systems. | Use Scenario: Generating calibrated DC bias voltages and AC waveforms for DUT stimulus in benchtop ATE platforms. IC Role / Device Role / Timing Role: Dual-output programmable gain amplifier with rail-compatible output swing. Use Value: Output drives 2kΩ loads to within 0.2V of rails at 5V supply, supporting 0–5V and ±10V test signal ranges without external boosters. |
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 GBW (1.8MHz), higher input offset (3mV max), no guaranteed 0.1% settling spec | Suitable for cost-sensitive general-purpose amplification but not for high-speed data acquisition | Select TL3472CDR when 4.5MHz bandwidth and 2μs settling are required; MC34072DR2G may reduce BOM cost where speed is secondary |
| LM2904DT | Slower slew rate (0.3V/μs), wider offset range (7mV max), no short-circuit protection | Targeted at low-power, low-frequency applications like battery-powered sensors | Choose TL3472CDR for industrial-grade reliability and speed; LM2904DT fits space-constrained, low-quiescent-current designs |
Compared with MC34072DR2G and LM2904DT, the TL3472CDR delivers 2.5× higher gain-bandwidth and 6× faster settling - making it the only option among the three qualified for 500ksps multiplexed data acquisition with <0.1% settling error.
Availability
TL3472CDR is available at Aetrix Electronics and suitable for industrial automation, test equipment, and medical device manufacturing requiring stable component supply, long-term lifecycle support, and RoHS-compliant SOIC packaging.
Supply support for TL3472CDR 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 high-reliability analog ICs.
The TL3472CDR belongs to TI's legacy precision op-amp product line designed specifically for industrial signal conditioning - emphasizing single-supply usability, robustness under overload, and consistent performance across extended temperature ranges.
FAQ
What is the maximum operating supply voltage for TL3472CDR?
The TL3472CDR supports a single-supply voltage range from 4V to 36V. Absolute maximum ratings specify ±18V differential supply, but recommended operation is strictly 4V to 36V on VCC+ with VCC− tied to ground. Exceeding 36V risks permanent damage per Section 4.1 of the SLOS200H datasheet.
Does TL3472CDR support true rail-to-rail input operation?
The TL3472CDR features a wide input common-mode range that includes ground (VCC−) and extends to VCC+ − 2.2V - meaning it accepts inputs from 0V up to ~33.8V at 36V supply. It does not support full rail-to-rail input (i.e., VCC+), but ground-referenced operation is fully supported, unlike many older bipolar op-amps.
Is TL3472CDR pin-compatible with TL3472CP?
Yes, TL3472CDR (SOIC-8) and TL3472CP (PDIP-8) share identical pin configuration and electrical functionality per Table 3-1 and Figure 3-1 in the datasheet. Both use the same 8-pin dual-op-amp layout: 1OUT, 1IN–, 1IN+, GND, 2IN+, 2IN–, 2OUT, VCC+. Mechanical footprint differs, but circuit design remains interchangeable.
What is the thermal resistance (θJA) of TL3472CDR in its SOIC package?
The TL3472CDR in SOIC (D) package has a junction-to-ambient thermal resistance (θJA) of 130.7°C/W, as specified in Section 4.1 Absolute Maximum Ratings. This value assumes standard JEDEC 2-layer board conditions and is critical for power dissipation calculations at elevated ambient temperatures.
Can TL3472CDR drive capacitive loads without oscillation?
The TL3472CDR maintains stability with up to 300pF capacitive load, delivering ≥50° phase margin per Section 4.4 Operating Characteristics. For loads exceeding 300pF, external isolation resistance (e.g., 100Ω in series with output) is recommended to preserve stability in ADC driver or cable-driving applications.
TL3472CDR 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TL3472CDR FAQ
1.How can I place an order for TL3472CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3472CDR 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 TL3472CDR reliable?
The price and inventory of TL3472CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3472CDR is usually 5 days.
3.What payment methods are accepted for TL3472CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3472CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3472CDR?
TL3472CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3472CDR 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 TL3472CDR?
For technical support, including TL3472CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3472CDR requirements.
6.How does Aetrix verify that TL3472CDR is sourced from the original manufacturer or authorized distributors?
All TL3472CDR 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 TL3472CDR meets industry standards.
7.What is the process for return or replacement of TL3472CDR?
All TL3472CDR units undergo pre-shipment inspection (PSI). If there is an issue with TL3472CDR, 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 TL3472CDR part is unused and in its original packaging.
Return procedure for TL3472CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL3472CDR Tags
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