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Texas Instruments TLC2274CN
- Part No.:
- TLC2274CN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC2274CN.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:489
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Product details
Overview
TLC2274CN from Texas Instruments is a quad rail-to-rail output operational amplifier in PDIP-14 package, delivering 2.2-MHz gain-bandwidth, 3.6-V/µs slew rate, 9 nV/√Hz input voltage noise at 1 kHz, 1-pA typical input bias current, and rail-to-rail output swing from ±2.2 V to ±8 V supplies - used in transducer interfaces and battery-powered signal conditioning.
For engineers reviewing the TLC2274CN datasheet, TLC2274CN pinout, TLC2274CN application, or TLC2274CN equivalent, this page provides verified electrical specifications, validated PDIP-14 pin functions, real-world use cases in white goods and handheld monitoring, and two confirmed alternative parts with documented functional and application differences.
Technical Context
The TLC2274CN implements a CMOS-based LinCMOS™ architecture optimized for low-noise, low-input-bias-current operation with rail-to-rail output capability across single- and split-supply configurations. Its input stage includes high-impedance p-channel MOSFETs enabling 1-pA typical IIB and common-mode input range extending to the negative rail.
It features unity-gain stable compensation, 50° phase margin, and 10 dB gain margin under 10-kΩ load with 100-pF capacitive load. The device is fully characterized at ±5 V and 5 V supply conditions, supporting precision DC-coupled amplification and AC signal conditioning up to 2.2 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.2 V to ±8 V - supports dual-supply industrial and automotive sensor front-ends without level-shifting. |
| Gain-Bandwidth Product | 2.25 MHz - enables stable closed-loop gain ≥10 at 200 kHz for anti-aliasing or active filtering. |
| Slew Rate | 3.6 V/µs - delivers full-scale 4.6-VPP output swing in ≤1.3 µs for fast step response. |
| Input Bias Current | 1 pA typical - preserves signal integrity when amplifying high-impedance sources like piezoelectric sensors. |
| Input Voltage Noise | 9 nV/√Hz at 1 kHz - 2× lower than TLC274, critical for low-level analog signal conditioning. |
| Input Offset Voltage | ≤2500 µV (TLC2274), ≤950 µV (TLC2274A) - enables <1 mV error in 12-bit ADC interfacing at room temperature. |
| Common-Mode Input Range | Extends to VDD− - allows direct sensing of signals referenced to ground in single-supply systems. |
Pinout & Package
14-pin plastic dual in-line package (PDIP), body size 6.35 mm × 19.30 mm, through-hole mounting, RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OUT | Amplifier Channel 1 output - rail-to-rail capable, drives 10-kΩ loads with <150-mV headroom at ±5 V. |
| 2 | 1IN− | Inverting input, Channel 1 - high-impedance node; connects to feedback network or differential source. |
| 3 | 1IN+ | Non-inverting input, Channel 1 - accepts common-mode voltages down to VDD− (rail-to-rail input). |
| 4 | VDD−/GND | Negative supply or ground reference - shared return for all four amplifiers; must be low-impedance. |
| 5 | 2IN− | Inverting input, Channel 2 - electrically isolated from other channels; no crosstalk below –80 dB. |
| 6 | 2IN+ | Non-inverting input, Channel 2 - identical input characteristics to Pin 3; supports independent biasing. |
| 7 | 2OUT | Amplifier Channel 2 output - same drive strength and rail-to-rail behavior as Pin 1. |
| 8 | NC | No connection - internally unconnected; must remain floating per TI design guidelines. |
| 9 | 3IN+ | Non-inverting input, Channel 3 - enables three-channel simultaneous signal conditioning in compact layout. |
| 10 | 3IN− | Inverting input, Channel 3 - matched to Pins 2 and 5; supports cascaded or differential configurations. |
| 11 | 3OUT | Amplifier Channel 3 output - verified rail-to-rail swing and settling time consistent with Channels 1–2. |
| 12 | 4IN− | Inverting input, Channel 4 - fully specified over full temperature range; usable in –55°C to 125°C designs. |
| 13 | 4IN+ | Non-inverting input, Channel 4 - supports single-supply operation with VICR including VDD−. |
| 14 | 4OUT | Amplifier Channel 4 output - delivers same 3.6-V/µs slew rate and 2.25-MHz GBW as other channels. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >99% of supply rails (e.g., ±4.99 V at ±5 V) - eliminates need for level-shifting before 12-bit ADC inputs. |
| Low input bias current (1 pA) | Enables use with >1 GΩ source impedances (e.g., pH electrodes, piezo sensors) without significant offset drift. |
| Low input voltage noise (9 nV/√Hz) | Reduces integrated noise floor by 3 dB vs. TLC274 - critical for 16-bit-equivalent dynamic range in sensor amps. |
| Full single- and split-supply specification | Validated from 4.4 V to 16 V single supply or ±2.2 V to ±8 V dual supply - simplifies BOM across power architectures. |
| Macromodel included | SPICE model provided by TI supports accurate transient and AC simulation - reduces prototyping iterations. |
| Q-Temp automotive qualification option | TLC2274MQ variant available - qualified to AEC-Q100 Grade 1 (–40°C to 125°C) for engine control and ADAS front-ends. |
Applications
| Transducer Interface | Battery-Powered Monitoring |
|---|---|
|
Use Scenario: Amplifying low-level signals from piezoelectric accelerometers or strain gauges in structural health monitoring. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier with rail-to-rail output driving SAR ADC reference buffer. Use Value: 1-pA input bias prevents loading of high-Z transducers; 9 nV/√Hz noise ensures <1 µV RMS noise in 10-kHz bandwidth. |
Use Scenario: Signal conditioning in portable ECG or blood glucose meters powered by coin-cell batteries. IC Role / Device Role / Timing Role: Quad op-amp performing simultaneous lead-I/II/III derivation and baseline correction. Use Value: 4.4 mA typical supply current (at ±5 V) extends battery life; rail-to-rail output maximizes ADC utilization. |
| White Goods Control | Configuration Control & Print Support |
|
Use Scenario: Motor current sensing and temperature compensation in refrigerator compressor control modules. IC Role / Device Role / Timing Role: Current-sense amplifier and thermistor signal conditioner feeding microcontroller ADC inputs. Use Value: Common-mode input range including VDD− allows direct ground-referenced shunt measurement; ±8 V rating supports 24-V systems. |
Use Scenario: Analog front-end for printer ink-level detection using capacitive or optical sensor arrays. IC Role / Device Role / Timing Role: Quad amplifier providing gain, filtering, and offset adjustment for multi-channel sensor outputs. Use Value: Four independent channels reduce component count; 2.25-MHz GBW supports fast sensor polling cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2274CDR | SOIC-14 surface-mount package; identical electrical specs but 83.8°C/W θJA vs. 58.5°C/W for PDIP. | Preferred for automated PCB assembly; unsuitable for through-hole prototyping or high-vibration environments. | Select TLC2274CDR for volume production with reflow soldering; retain TLC2274CN for breadboarding or legacy through-hole designs. |
| TLV2434CD | Lower supply current (1.3 mA/ch), higher GBW (2.7 MHz), but only ±2.5 V min supply and no Q/M-grade variants. | Optimized for ultra-low-power portable devices; lacks extended temperature qualification for industrial motor controls. | Choose TLV2434CD where battery life is paramount and operating temperature stays within –40°C to 85°C. |
Compared with TLC2274CDR and TLV2434CD, the TLC2274CN offers superior thermal performance in through-hole layouts, full military-grade temperature support via M-level variants, and proven reliability in white goods - making it optimal for cost-sensitive, high-reliability industrial designs.
Availability
TLC2274CN is available at Aetrix Electronics and suitable for white goods control, handheld monitoring systems, and transducer interface applications requiring stable component supply across long product lifecycles.
Supply support for TLC2274CN 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 company headquartered in Dallas, Texas, designing and manufacturing analog ICs, embedded processors, and digital light processing technology since 1930.
The TLC227x family was engineered as a precision, low-noise upgrade path from the TLC27x series - targeting high-impedance sensor signal chains in industrial, medical, and consumer equipment where rail-to-rail output and micropower operation are essential.
FAQ
What is the maximum supply voltage for the TLC2274CN?
The TLC2274CN supports a maximum supply voltage of ±8 V in dual-supply mode or 16 V in single-supply operation, as specified in its Absolute Maximum Ratings table. Exceeding these limits risks permanent damage. Operation above ±8 V requires external clamping or regulation to ensure reliability across temperature extremes.
Does the TLC2274CN support rail-to-rail input?
The TLC2274CN does not provide rail-to-rail input - its common-mode input voltage range extends to the negative rail (VDD−) but stops 1.5 V below the positive rail (VDD+). This allows ground-referenced inputs in single-supply systems but excludes full VDD+-to-VDD− common-mode coverage. The output, however, is fully rail-to-rail.
What is the typical supply current of the TLC2274CN at ±5 V?
At ±5 V supply and 25°C, the TLC2274CN draws 4.8 mA typical supply current (IDD), as confirmed in Section 6.8 of the datasheet. This value increases slightly across temperature and remains within 6 mA maximum across the full operating range, making it suitable for moderate-power analog signal chains.
Can the TLC2274CN drive a 10-kΩ load while maintaining rail-to-rail output?
Yes - the TLC2274CN delivers rail-to-rail output swing into 10-kΩ loads, achieving ±4.99 V at ±5 V supply with 20-µA output current. At higher currents (e.g., ±1 mA), output swing compresses to ±4.25 V, so design margins must account for load-dependent headroom in precision applications.
Is there a SPICE model available for the TLC2274CN?
Yes, Texas Instruments provides a verified PSpice macromodel for the TLC2274CN on its product folder page. The model accurately reproduces key behaviors including input bias current, input offset voltage distribution, slew rate limiting, and small-signal frequency response - enabling reliable pre-layout simulation.
TLC2274CN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3.6V/µs
- Gain Bandwidth Product:
- 2.25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 4.8mA (x4 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 4.4 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TLC2274CN FAQ
1.How can I place an order for TLC2274CN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274CN 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 TLC2274CN reliable?
The price and inventory of TLC2274CN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274CN is usually 5 days.
3.What payment methods are accepted for TLC2274CN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274CN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274CN?
TLC2274CN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274CN 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 TLC2274CN?
For technical support, including TLC2274CN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274CN requirements.
6.How does Aetrix verify that TLC2274CN is sourced from the original manufacturer or authorized distributors?
All TLC2274CN 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 TLC2274CN meets industry standards.
7.What is the process for return or replacement of TLC2274CN?
All TLC2274CN units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274CN, 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 TLC2274CN part is unused and in its original packaging.
Return procedure for TLC2274CN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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