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Texas Instruments TL3474CDR
- Part No.:
- TL3474CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL3474CDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TL3474CDR from Texas Instruments is a quad, high-slew-rate, single-supply operational amplifier optimized for precision signal conditioning in 4V–36V systems. It delivers 4.5MHz gain-bandwidth, 3mV max input offset voltage (A-grade), and rail-to-rail input common-mode range including ground - enabling direct interfacing with microcontroller ADCs and low-side current sensing circuits.
For engineers reviewing the TL3474CDR datasheet, TL3474CDR pinout, TL3474CDR application, or TL3474CDR equivalent, key selection criteria include its wide single-supply operation, output short-circuit protection, 10V/μs positive slew rate, and compatibility with SAR ADC reference buffering and multiplexed data-acquisition systems.
Technical Context
The TL3474CDR employs bipolar fabrication to achieve high input resistance (>540GΩ), low noise (10.8nV/√Hz), and robust channel separation (101dB at 10kHz). Its architecture supports stable unity-gain operation with 70° phase margin into 2kΩ loads and no external compensation required.
Designed explicitly for single-supply use, the device features VCC−/GND as a dedicated supply terminal (Pin 11), allowing true ground-referenced inputs and outputs. Input bias currents remain below 500nA (max) across 0°C–70°C, supporting high-impedance sensor interfaces without significant DC error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 4.5MHz - enables stable closed-loop gain up to 100 at 45kHz for anti-aliasing filter design. |
| Input offset voltage (max) | 3mV - ensures ≤0.03% full-scale error in 10V-range ADC driver applications. |
| Supply voltage range | 4V to 36V single supply - eliminates need for dual-rail supplies in industrial PLC I/O modules. |
| Positive slew rate | 10V/μs - supports fast settling (2μs to 0.1%) for 10V step signals in test equipment. |
| Input common-mode range | Includes ground (VCC−) - allows direct connection of 0V-referenced sensors without level-shifting circuitry. |
| Output short-circuit protection | Yes - sustains indefinite short to either rail without latch-up or permanent damage. |
| Equivalent input noise | 10.8nV/√Hz @1kHz - maintains SNR >90dB in precision instrumentation amplifier front-ends. |
Pinout & Package
TL3474CDR is packaged in a 14-pin SOIC (D package), 8.65mm × 6.00mm body size, 1.75mm max height, with standard JEDEC MS-012AB footprint and RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output channel 1 | Amplified output of first op-amp stage; capable of ±80mA short-circuit current. |
| 1IN–, 1IN+ | Inverting/non-inverting inputs (ch1) | Differential pair accepting signals down to ground; input bias current <500nA (max). |
| VCC+ | Positive supply | Primary power rail; accepts 4V–36V; total current into this pin ≤80mA per device. |
| 2IN+, 2IN–, 2OUT | Inputs/outputs (ch2) | Independent second amplifier with identical specs; channel separation >101dB prevents crosstalk. |
| 3OUT, 3IN–, 3IN+ | Inputs/outputs (ch3) | Third amplifier; shares same thermal and supply rejection characteristics as ch1/ch2. |
| VCC– / GND | Negative supply or ground | Reference node for single-supply operation; must be connected to system ground when using 4V–36V VCC+. |
| 4IN+, 4IN–, 4OUT | Inputs/outputs (ch4) | Fourth amplifier; fully independent; all four channels share same quiescent current (0.56mA/ch typ). |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply operation | Supports 4V–36V rails with input common-mode range extending to VCC− (ground), eliminating level shifters in MCU-connected analog front-ends. |
| High slew rate | 10V/μs positive slew rate enables accurate amplification of fast transient signals in automated test equipment without distortion. |
| Low input offset voltage | 3mV maximum (A-grade) ensures minimal DC error in precision current sensing and reference buffer applications. |
| Output short-circuit protection | Internally limits output current during fault conditions, protecting both the IC and downstream circuitry without external current-limiting resistors. |
| High CMRR & PSRR | 97dB common-mode rejection and 97dB supply rejection maintain signal integrity in noisy industrial environments with fluctuating rails. |
Applications
| Multiplexed Data-Acquisition Systems | Test and Measurement Equipment |
|---|---|
Use Scenario: Simultaneous sampling of multiple sensor channels via analog multiplexer before ADC conversion. IC Role / Device Role / Timing Role: Quad op-amp buffers each channel to prevent loading, drive multiplexer inputs, and reject crosstalk between channels. Use Value: 101dB channel separation and 4.5MHz GBW preserve signal fidelity across 16-channel systems operating at ≥100kSPS. | Use Scenario: Signal conditioning and amplification in benchtop multimeters and oscilloscope front-ends. IC Role / Device Role / Timing Role: High-speed, low-noise gain stage preceding digitization; provides programmable attenuation/gain with stable phase response. Use Value: 10V/μs slew rate and 2μs settling time enable accurate capture of fast transients without overshoot or ringing. |
| ADC Driver Amplifiers | SAR ADC Reference Buffers |
Use Scenario: Driving the dynamic input capacitance of successive-approximation register (SAR) ADCs during acquisition phase. IC Role / Device Role / Timing Role: Low-output-impedance buffer isolating ADC input from source impedance; handles kickback energy during sampling. Use Value: 525Ω open-loop output impedance and 10V/μs slew rate ensure <0.1% settling within 2μs for 16-bit conversions. | Use Scenario: Stabilizing and buffering precision voltage references feeding SAR ADC internal reference inputs. IC Role / Device Role / Timing Role: Unity-gain follower maintaining reference accuracy while supplying transient current during conversion cycles. Use Value: 3mV max offset and 10.8nV/√Hz noise contribute <0.02% error and >90dB SNR in 16-bit+ measurement systems. |
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 | Lower GBW (1.3MHz), higher input offset (7mV max), no guaranteed short-circuit protection. | Less suitable for high-speed ADC drivers or precision low-side sensing where bandwidth and offset matter. | Select TL3474CDR when ≥4.5MHz GBW, ≤3mV offset, or output fault tolerance is required. |
| LM324DR | Slower slew rate (0.5V/μs), lower GBW (1.2MHz), wider offset range (7mV max), no specified short-circuit protection. | Acceptable only for DC or low-frequency (<10kHz) signal conditioning; not recommended for multiplexed DAQ or fast-settling ADC interfaces. | Choose TL3474CDR for designs needing faster settling, better AC performance, or guaranteed fault resilience. |
Compared with MC34074DR2G and LM324DR, TL3474CDR offers 3.5× higher gain-bandwidth, 2.3× lower max offset, and explicit short-circuit protection - making it the preferred choice for industrial data acquisition, test instrumentation, and precision reference buffering where speed and reliability are critical.
Availability
TL3474CDR is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, test and measurement equipment, and SAR ADC reference buffering requiring stable component supply across industrial temperature ranges (0°C to 70°C).
Supply support for TL3474CDR 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 signal-chain solutions.
The TL3474CDR belongs to TI's legacy high-performance bipolar op-amp family, engineered for robust single-supply operation in industrial control, instrumentation, and data-conversion systems where reliability and parametric consistency are essential.
FAQ
What is the operating temperature range for TL3474CDR?
The TL3474CDR is rated for operation from 0°C to 70°C ambient temperature, matching the "C" grade designation in its part number. This range is validated per TI's Recommended Operating Conditions table and applies to all electrical specifications unless otherwise noted. The device uses the same die as the TL3474C series and is manufactured in TI's modern fabrication site with CSO "RFB". Thermal derating is not required within this range when used within absolute maximum ratings.
Does TL3474CDR support true single-supply operation with ground-referenced inputs?
Yes, TL3474CDR supports true single-supply operation with ground-referenced inputs: its input common-mode voltage range extends to VCC− (Pin 11), which is connected to system ground. This allows direct interfacing with 0V-referenced sensors and microcontroller GPIOs without level-shifting circuitry. The specification is confirmed in Section 5.2 (Recommended Operating Conditions) and Figure 4-1 (Pin Functions) of the official datasheet.
What is the maximum supply voltage for TL3474CDR?
The TL3474CDR supports a maximum total supply voltage of 36V across VCC+ and VCC−/GND terminals. Absolute maximum ratings specify ±18V differential, but for single-supply use, VCC+ may be up to 36V with VCC− tied to ground. Operation beyond 36V risks permanent damage, and thermal limits must be observed - especially at high ambient temperatures or under heavy load - given its 86°C/W θJA in the SOIC (D) package.
Is TL3474CDR pin-compatible with MC34074 or LM324?
No, TL3474CDR is not pin-compatible with MC34074 or LM324. While all three are 14-pin quad op-amps in SOIC packages, TL3474CDR assigns Pin 11 to VCC−/GND, whereas LM324 and MC34074 use Pin 11 as an output (channel 4 out). This fundamental pinout difference means direct PCB replacement is not possible without layout modification. Always verify pin functions using Table 4-1 in the TL3474CDR datasheet before substitution.
What packaging and reel information applies to TL3474CDR?
TL3474CDR is supplied in a 14-pin SOIC (D) package, 8.65mm × 6.00mm, with NiPdAu lead finish and RoHS compliance. It ships in tape-and-reel format: 2500 units per reel, 330mm reel diameter, 16.4mm reel width, Q1 pin-1 quadrant orientation, and moisture sensitivity level (MSL) 1 - meaning unlimited floor life at ≤30°C/60% RH. Reel dimensions and cavity specifications align with JEDEC MS-012AB standards.
TL3474CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TL3474CDR FAQ
1.How can I place an order for TL3474CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL3474CDR 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 TL3474CDR reliable?
The price and inventory of TL3474CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL3474CDR is usually 5 days.
3.What payment methods are accepted for TL3474CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL3474CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL3474CDR?
TL3474CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL3474CDR 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 TL3474CDR?
For technical support, including TL3474CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL3474CDR requirements.
6.How does Aetrix verify that TL3474CDR is sourced from the original manufacturer or authorized distributors?
All TL3474CDR 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 TL3474CDR meets industry standards.
7.What is the process for return or replacement of TL3474CDR?
All TL3474CDR units undergo pre-shipment inspection (PSI). If there is an issue with TL3474CDR, 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 TL3474CDR part is unused and in its original packaging.
Return procedure for TL3474CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL3474CDR Tags
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