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Texas Instruments TLC274CDG4
- Part No.:
- TLC274CDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC274CDG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,400
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Product details
Overview
TLC274CDG4 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, and rail-to-rail output swing down to the negative rail. It operates from 3 V to 16 V over 0°C to 70°C and delivers high input impedance (>10¹² Ω) for low-bias-current signal conditioning in sensor front-ends and data acquisition systems.
For engineers reviewing the TLC274CDG4 datasheet, TLC274CDG4 pinout, TLC274CDG4 application, or TLC274CDG4 equivalent, this device is selected for precision analog signal processing where low power, wide supply range, and ground-sensing capability are required - especially in battery-powered instrumentation, industrial transducer interfaces, and mixed-signal embedded control.
Technical Context
The TLC274CDG4 uses a polysilicon-gate CMOS process enabling low input bias current (≤60 pA typ), minimal input offset voltage drift (0.3 µV/°C), and latch-up immunity. Its input stage supports common-mode voltage down to the negative rail, and its output stage drives to within 50 mV of GND under load - critical for single-supply active filtering and level-shifting.
It achieves 4.5 MHz unity-gain bandwidth and 0.5 V/µs slew rate at 5 V supply, with 65–80 dB CMRR and PSRR across temperature. The architecture avoids bipolar junction limitations while matching BiFET speed and noise performance at lower cost and power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 10 mV max (25°C, C-suffix grade) - sets DC accuracy limit in precision amplification and sensor offset correction. |
| Input Voltage Noise | 10.8 nV/√Hz at 1 kHz - enables low-noise amplification of microvolt-level signals without dominant resistor thermal noise. |
| Supply Voltage Range | 3 V to 16 V (0°C to 70°C) - supports direct interface with 3.3 V/5 V logic rails and higher-voltage analog stages. |
| Common-Mode Input Range | Extends to GND (–0.1 V min) - allows direct sensing of ground-referenced signals without level-shifting circuitry. |
| Output Swing (Low) | 0–50 mV above GND (IOL = 0) - ensures full dynamic range utilization in single-supply configurations. |
| Unity-Gain Bandwidth | 4.5 MHz - supports stable closed-loop gain ≥1 up to audio and low-speed control loop frequencies. |
| Supply Current (Quad) | 2.24–6.4 mA (25°C, VDD = 5 V) - balances performance and power efficiency for multi-channel analog signal chains. |
Pinout & Package
Package: SOIC-14 (D package), 8.65 mm × 6 mm body size, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier channel 1 output - drives external load or next-stage input; rail-to-rail capable. |
| 1IN–, 1IN+ | Input | Inverting/noninverting inputs for channel 1 - high-impedance CMOS nodes; guard ring recommended. |
| VDD | Power Supply | Positive supply terminal (3–16 V); requires local 0.1 µF ceramic bypass to GND. |
| 2IN+, 2IN–, 2OUT | Input/Output | Channel 2 differential inputs and output - electrically isolated but thermally coupled to other channels. |
| 3OUT, 3IN–, 3IN+ | Output/Input | Channel 3 terminals - identical electrical specs; usable for multi-stage filtering or independent signal paths. |
| GND | Power Supply | Negative supply / reference node - must be low-impedance; shared return for all four amplifiers. |
| 4IN+, 4IN–, 4OUT | Input/Output | Channel 4 terminals - fully functional; unused channels must be configured as unity-gain followers tied to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing (to GND) | Enables full-scale signal utilization in 3 V–5 V single-supply systems without negative rail generation. |
| Input common-mode range to GND | Eliminates need for input biasing networks in ground-referenced sensor interfaces (e.g., RTDs, strain gauges). |
| Ultra-low input bias current (≤60 pA) | Permits use of high-value feedback resistors (>1 MΩ) without significant DC error or time-constant degradation. |
| ESD protection circuitry | Protects against human-body-model discharges up to ±2 kV, improving robustness during board handling and assembly. |
| Latch-up immunity | Guarantees safe operation under transient overvoltage or input phase reversal conditions per JEDEC JESD78. |
Applications
| Industrial Sensor Interface | Portable Data Acquisition |
|---|---|
Use Scenario: Amplifying low-level outputs from 4–20 mA loop sensors, thermocouples, or bridge-based pressure transducers in PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with offset trimming and gain setting. Use Value: 10 mV max VIO and 0.3 µV/°C drift ensure <±0.1% full-scale error over 0–70°C without recalibration. |
Use Scenario: Signal conditioning in handheld multimeters, environmental monitors, or battery-powered oscilloscope probes. IC Role / Device Role / Timing Role: Quad-channel buffer, filter, and level-shifter for simultaneous analog channel processing. Use Value: 3 V minimum supply and 2.24 mA quiescent current per amplifier enable >100-hour battery life in 3×AA designs. |
| Medical Instrumentation | Automotive Body Electronics |
Use Scenario: ECG electrode signal amplification and baseline stabilization in portable patient monitors. IC Role / Device Role / Timing Role: High-Z biopotential amplifier with driven-right-leg (DRL) feedback and AC coupling. Use Value: >10¹² Ω input impedance minimizes electrode-skin interface errors; low 10.8 nV/√Hz noise preserves QRS complex fidelity. |
Use Scenario: Cabin temperature, seat position, and ambient light sensing in automotive control units. IC Role / Device Role / Timing Role: Analog front-end for resistive sensor signal conditioning and ADC driver. Use Value: Single-supply operation from 5 V vehicle rail and –0.1 V to 4 V input range simplify design vs. dual-supply alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC274ACDG4 | 5 mV max input offset voltage (vs. 10 mV), otherwise identical pinout, specs, and package. | Better DC accuracy for high-gain sensor amplification where <0.05% gain error is required. | Select when tighter initial offset justifies minor cost premium; no layout or firmware changes needed. |
| LM324DR | Bipolar input (higher IIB ≈ 45 nA), wider VDD range (3–32 V), but no rail-to-rail output or GND-sensing input. | Suitable for non-critical general-purpose amplification where cost is primary constraint. | Choose only if input bias current >100× higher and 1.5 V output headroom above GND are acceptable. |
Compared with TLC274ACDG4, the TLC274CDG4 trades 5 mV offset for lower cost while retaining identical noise, bandwidth, and supply flexibility; versus LM324DR, it delivers 1000× lower input bias current and true ground-sensing capability - essential for high-impedance sources and precision DC measurement.
Availability
TLC274CDG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable data acquisition systems, and medical instrumentation requiring stable component supply across long production lifecycles.
Supply support for TLC274CDG4 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision analog ICs and broad manufacturing scale.
The TLC27xx family was designed to replace legacy BiFET op-amps in cost-sensitive, low-power, single-supply applications - combining CMOS input advantages with competitive speed and noise performance.
FAQ
What is the maximum operating temperature range for the TLC274CDG4?
The TLC274CDG4 is rated for 0°C to 70°C ambient operation. This C-suffix grade is specified across that full range for all key parameters including input offset voltage (12 mV max), supply current (up to 7.2 mA), and CMRR (60 dB min). Operation outside this range may cause parametric shift or reliability risk and is not guaranteed by Texas Instruments.
Does the TLC274CDG4 support true rail-to-rail input?
No, the TLC274CDG4 does not support rail-to-rail input. Its common-mode input voltage range extends to GND (–0.1 V min) but only to VDD – 1 V at 25°C (e.g., 4 V max at 5 V supply). The input stage is optimized for single-supply operation with ground-sensing capability, not full rail coverage on the positive side.
Can unused amplifiers in the TLC274CDG4 be left floating?
No - unused amplifiers in the TLC274CDG4 must be configured as unity-gain voltage followers with inputs tied to a valid common-mode voltage (e.g., GND or mid-supply) to prevent oscillation or excessive current draw. Floating inputs can cause phase reversal, latch-up, or unpredictable output states that affect adjacent channels.
What is the typical input bias current of the TLC274CDG4 at 25°C?
The typical input bias current of the TLC274CDG4 is 10 pA at 25°C, with a maximum of 60 pA across the 0°C to 70°C range. This ultra-low value results from its polysilicon-gate CMOS input structure and enables high-impedance sensor interfacing without significant DC error or RC time-constant loading.
Is the TLC274CDG4 pin-compatible with the LM324?
No, the TLC274CDG4 is not pin-compatible with the LM324. While both are quad op-amps in SOIC-14 packages, their pinouts differ: LM324 places GND at Pin 4 and VCC at Pin 8, whereas TLC274CDG4 uses Pin 4 for VDD and Pin 11 for GND. Direct substitution requires PCB redesign and signal re-routing.
TLC274CDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC274CDG4 FAQ
1.How can I place an order for TLC274CDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC274CDG4 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 TLC274CDG4 reliable?
The price and inventory of TLC274CDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC274CDG4 is usually 5 days.
3.What payment methods are accepted for TLC274CDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC274CDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC274CDG4?
TLC274CDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC274CDG4 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 TLC274CDG4?
For technical support, including TLC274CDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC274CDG4 requirements.
6.How does Aetrix verify that TLC274CDG4 is sourced from the original manufacturer or authorized distributors?
All TLC274CDG4 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 TLC274CDG4 meets industry standards.
7.What is the process for return or replacement of TLC274CDG4?
All TLC274CDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC274CDG4, 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 TLC274CDG4 part is unused and in its original packaging.
Return procedure for TLC274CDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC274CDG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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