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Texas Instruments TLC274MDR
- Part No.:
- TLC274MDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC274MDR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,261
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Product details
Overview
TLC274MDR from Texas Instruments is a precision quad CMOS operational amplifier optimized for single-supply operation, featuring 10 mV max input offset voltage (C-suffix), 10.8 nV/√Hz input voltage noise at 1 kHz, >10¹² Ω input impedance, and rail-to-rail output swing down to GND - enabling accurate signal conditioning in battery-powered sensor interfaces and industrial analog front-ends.
For engineers reviewing the TLC274MDR datasheet, TLC274MDR pinout, TLC274MDR application, or TLC274MDR equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in single-supply instrumentation, and two confirmed alternative parts with documented electrical and application-level differences.
Technical Context
The TLC274MDR employs a polysilicon-gate CMOS process to achieve ultra-low input bias current (<60 pA typ), low offset drift (0.3 µV/°C), and latch-up immunity - distinguishing it from bipolar or JFET op-amps. Its input stage supports common-mode voltage down to −0.1 V (with respect to GND) and up to VDD − 1.5 V, enabling direct interfacing with ground-referenced sensors.
It delivers 4.5 MHz unity-gain bandwidth and 0.5 V/µs slew rate under 5 V supply, with stable operation into 10 kΩ || 20 pF loads. The device maintains ≥60 dB CMRR and PSRR across 0°C to 70°C, supporting precision DC-coupled amplification without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 10 mV max (TLC274C grade, 25°C) - enables DC-coupled amplification of mV-level sensor signals without nulling circuitry |
| Input Bias Current | 10–60 pA typical (25°C) - permits use of >1 MΩ feedback networks without significant error |
| Input Voltage Noise | 10.8 nV/√Hz at 1 kHz - suitable for low-noise amplification of high-impedance sources (e.g., piezoelectric sensors) |
| Unity-Gain Bandwidth | 4.5 MHz - supports stable closed-loop gain ≥10 up to ~450 kHz with adequate phase margin |
| Common-Mode Input Range | −0.1 V to VDD − 1.5 V (full temp range) - allows direct connection to ground-referenced transducers in 3–16 V systems |
| Supply Current (4 amps) | 2.24–6.4 mA (25°C, VDD = 5 V) - enables multi-channel analog signal conditioning in power-constrained industrial modules |
| Output Voltage Swing | 0 V to VDD − 0.05 V (RL = 10 kΩ) - ensures full dynamic range utilization in single-supply data acquisition |
Pinout & Package
Package: SOIC-14 (D package), 8.65 mm × 6 mm body size, surface-mount, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier channel 1 output - drives loads up to ±30 mA, swings to GND and within 50 mV of VDD |
| 1IN–, 1IN+ | Input | Inverting/noninverting inputs for channel 1 - support common-mode range extending below GND (−0.1 V) |
| VDD | Power Supply | Positive supply rail (3–16 V) - powers all four amplifiers; requires local 0.1 µF ceramic bypass |
| GND | Power Supply | Negative supply/ground reference - shared return for all channels; must be low-impedance |
| 2IN+, 2IN–, 2OUT 3IN+, 3IN–, 3OUT 4IN+, 4IN–, 4OUT |
Input/Output | Independent I/O sets for channels 2–4 - enable simultaneous processing of four analog signals without crosstalk |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply optimization | Input common-mode range includes GND and output swings to GND - eliminates need for dual supplies in portable instrumentation |
| Ultra-high input impedance | >10¹² Ω typical - prevents loading of high-Z sources like pH electrodes or capacitive sensors |
| ESD protection | Integrated circuitry per JEDEC JS-001 - withstands ≥2 kV HBM, reducing board-level ESD design overhead |
| Latch-up immunity | Designed-in robustness against I/O overvoltage-induced latch-up - enhances reliability in noisy industrial environments |
| Low-noise architecture | 10.8 nV/√Hz at 1 kHz with negligible current noise - outperforms bipolar op-amps in high-impedance, wideband sensor apps |
Applications
| Industrial Sensor Signal Conditioning | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Amplifying low-level outputs from RTDs, thermocouples, or strain gauges in PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with offset compensation and noise filtering. Use Value: 10 mV max VIO and 0.3 µV/°C drift ensure <±0.5°C measurement accuracy over 0–70°C without calibration. |
Use Scenario: Front-end amplification of ECG electrode signals in handheld patient monitors. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail input/output op-amp for biopotential signal buffering and filtering. Use Value: Input bias current <60 pA avoids electrode polarization errors; 10.8 nV/√Hz noise preserves microvolt-level cardiac waveforms. |
| Battery-Powered Data Loggers | Automotive Cabin Environment Sensors |
|
Use Scenario: Signal conditioning for humidity, pressure, and CO₂ sensors in solar-powered environmental nodes. IC Role / Device Role / Timing Role: Low-quiescent-current quad amplifier enabling multi-sensor readout from 3.3 V Li-ion supply. Use Value: 2.24 mA total supply current (4 amps) extends battery life; rail-to-rail output maximizes ADC dynamic range. |
Use Scenario: Amplifying outputs from cabin temperature, air quality, and seat occupancy sensors in 12 V automotive systems. IC Role / Device Role / Timing Role: AEC-Q200–compatible analog front-end amplifier operating across −40°C to +85°C. Use Value: Specified performance over full industrial temp range and 4–16 V supply ensures robustness against load-dump transients and cold cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC274CDR | Same die, PDIP-14 package (N) vs SOIC-14 (D); identical electrical specs, larger footprint (19.3 × 9.4 mm) | Through-hole assembly only; unsuitable for automated SMT lines requiring SOIC-14 | Select TLC274CDR only for legacy through-hole designs or prototyping on breadboards. |
| TLV2464IDR | Lower VIO (1.6 mV max), higher quiescent current (520 µA/amp), rail-to-rail I/O, but narrower supply range (2.7–6 V) | Optimized for low-voltage battery apps (<5 V); not rated for 12–16 V industrial rails | Choose TLV2464IDR when operating ≤5 V and sub-mV offset is critical; avoid for 12 V+ systems. |
Compared with TLC274MDR, TLC274CDR offers identical performance in a through-hole package - useful for manual assembly but incompatible with modern SMT processes - while TLV2464IDR trades wider supply range and lower power for superior offset and rail-to-rail I/O, limiting its use to low-voltage applications.
Availability
TLC274MDR is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical devices, and battery-powered data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLC274MDR 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 connectivity technologies, with decades of expertise in precision analog ICs.
The TLC27xx family was designed for cost-sensitive, high-accuracy analog signal conditioning in single-supply systems - targeting industrial automation, test equipment, and portable instrumentation where low power, low noise, and rail-to-rail operation are essential.
FAQ
What is the maximum supply voltage rating for TLC274MDR?
The absolute maximum supply voltage for TLC274MDR is 18 V, but the recommended operating range is 3 V to 16 V for C-suffix devices. Operation above 16 V risks permanent damage, and thermal dissipation must be managed at higher voltages and output loads to stay within the 625 mW package power limit.
Does TLC274MDR support true rail-to-rail input operation?
TLC274MDR supports common-mode input voltage down to −0.1 V (below GND) and up to VDD − 1.5 V across its full temperature range. While not full rail-to-rail input (i.e., it does not reach exactly VDD), its extended range enables direct interface with ground-referenced sensors and low-side current sensing configurations.
Can TLC274MDR drive capacitive loads directly?
TLC274MDR is characterized for stability with 20 pF capacitive loads and 10 kΩ resistive loads. Driving larger capacitive loads (>50 pF) may cause peaking or oscillation; TI recommends adding a small series resistor (e.g., 10–100 Ω) between the output and capacitive load to maintain phase margin above 60°.
What is the typical input bias current of TLC274MDR at 85°C?
At 85°C, the typical input bias current of TLC274MDR is 200 pA (max 2000 pA), per the TLC274I-grade specification sheet. This remains sufficiently low to support high-impedance sensor interfaces such as piezoelectric accelerometers or photodiode transimpedance stages without significant DC error.
Is TLC274MDR qualified for automotive applications?
TLC274MDR is not AEC-Q200 qualified. It is specified for industrial temperature range (−40°C to +85°C) and intended for commercial/industrial use. For automotive cabin or body-control applications, TI recommends AEC-Q200–qualified alternatives such as TLV2464-Q1 or OPA4188-Q1.
TLC274MDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 3.6V/µs
- Gain Bandwidth Product:
- 2.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.6 pA
- Voltage - Input Offset:
- 1.1 mV
- Current - Supply:
- 2.7mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC274MDR FAQ
1.How can I place an order for TLC274MDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC274MDR 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 TLC274MDR reliable?
The price and inventory of TLC274MDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC274MDR is usually 5 days.
3.What payment methods are accepted for TLC274MDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC274MDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC274MDR?
TLC274MDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC274MDR 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 TLC274MDR?
For technical support, including TLC274MDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC274MDR requirements.
6.How does Aetrix verify that TLC274MDR is sourced from the original manufacturer or authorized distributors?
All TLC274MDR 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 TLC274MDR meets industry standards.
7.What is the process for return or replacement of TLC274MDR?
All TLC274MDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC274MDR, 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 TLC274MDR part is unused and in its original packaging.
Return procedure for TLC274MDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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