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Texas Instruments TLC2274CNSR-A
- Part No.:
- TLC2274CNSR-A
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
TLC2274CNSR-A.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,407
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Product details
Overview
TLC2274CNSR-A from Texas Instruments is a quad rail-to-rail output operational amplifier optimized for precision, low-noise signal conditioning in single- or split-supply systems. It delivers 2.25 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 ±5 V operation with rail-to-rail swing - enabling direct interfacing with 12-bit ADCs in battery-powered sensor front-ends.
For engineers reviewing the TLC2274CNSR-A datasheet, TLC2274CNSR-A pinout, TLC2274CNSR-A application, or TLC2274CNSR-A equivalent, key selection criteria include input offset voltage (≤950 µV max), common-mode input range extending to VDD−, low quiescent current (4.8 mA typ at ±5 V), and guaranteed rail-to-rail output drive into 10 kΩ loads.
Technical Context
The TLC2274CNSR-A uses advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining high input impedance (>10¹² Ω) and ultra-low input bias current (1 pA typ). Its architecture supports stable unity-gain operation with 50° phase margin and includes internal compensation for 100 pF capacitive loads.
It operates across ±2.2 V to ±8 V supply ranges, features common-mode input voltage down to VDD− (–5.3 V at ±5 V), and maintains 75 dB CMRR and 95 dB PSRR - making it suitable for transducer amplification where ground-referenced signals and supply rejection are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.2 V to ±8 V - supports dual-supply industrial and automotive sensor interfaces without level-shifting. |
| Gain-Bandwidth Product | 2.25 MHz - enables stable closed-loop gain ≥10 up to ~225 kHz for anti-aliasing filter integration. |
| Slew Rate | 3.6 V/µs - ensures <2.6 µs settling to 0.01% for ±2.3 V steps, suitable for multiplexed data acquisition. |
| Input Offset Voltage | ≤950 µV (max, TA = 25°C) - reduces DC error in precision instrumentation amplifiers and bridge sensor circuits. |
| Input Bias Current | 1 pA (typical) - preserves signal integrity when amplifying high-impedance sources like piezoelectric sensors. |
| Output Swing | Rail-to-rail (e.g., –4.99 V to +4.99 V at ±5 V, IO = –20 µA) - maximizes dynamic range into ADCs with 0–5 V or ±2.5 V reference rails. |
| Input Voltage Noise | 9 nV/√Hz at 1 kHz - lowers integrated noise floor in 10 Hz–20 kHz audio and condition monitoring bands. |
Pinout & Package
The TLC2274CNSR-A is supplied in a 14-pin SOIC (N) package measuring 3.91 mm × 8.65 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT1 | Amplified output of Channel 1 - drives external load or next-stage input with rail-to-rail swing. |
| 2 | IN1− | Inverting input of Channel 1 - used for negative feedback, differential sensing, or inverting configurations. |
| 3 | IN1+ | Non-inverting input of Channel 1 - accepts high-impedance sensor signals with common-mode range to VDD−. |
| 4 | VDD+ | Positive supply terminal - connects to highest potential rail (e.g., +5 V or +8 V). |
| 5 | IN2+ | Non-inverting input of Channel 2 - independent channel for multi-sensor conditioning or active filtering. |
| 6 | IN2− | Inverting input of Channel 2 - supports dual-channel instrumentation or differential-to-single-ended conversion. |
| 7 | OUT2 | Amplified output of Channel 2 - electrically isolated from OUT1; shares supply rails only. |
| 8 | NC | No connection - not bonded; must remain unconnected per TI design. |
| 9 | IN3− | Inverting input of Channel 3 - enables three-channel simultaneous signal conditioning on single IC. |
| 10 | IN3+ | Non-inverting input of Channel 3 - extends system-level channel density without additional layout area. |
| 11 | VDD− | Negative supply terminal - connects to lowest potential rail (e.g., –5 V or GND in single-supply mode). |
| 12 | IN4+ | Non-inverting input of Channel 4 - supports four independent analog channels in compact space-constrained designs. |
| 13 | IN4− | Inverting input of Channel 4 - allows full quad-channel differential or single-ended configuration flexibility. |
| 14 | OUT4 | Amplified output of Channel 4 - completes quad-channel output set; each output independently loaded. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full supply-range output (e.g., –4.99 V to +4.99 V at ±5 V), eliminating headroom loss when driving SAR or sigma-delta ADCs. |
| Low input bias current (1 pA) | Prevents signal degradation in high-Z applications such as pH electrodes, photodiode transimpedance stages, and piezoelectric charge amplifiers. |
| Low input voltage noise (9 nV/√Hz) | Reduces total integrated noise in 10 Hz–100 kHz bandwidths, critical for ECG, vibration monitoring, and precision weigh-scale front-ends. |
| Specified for single- and split-supply operation | Operates identically from 5 V single supply (VDD+ = 5 V, VDD− = GND) or ±5 V - simplifies power architecture reuse across product variants. |
| Common-mode input range includes VDD− | Accepts inputs down to the negative rail, enabling ground-referenced sensor outputs (e.g., thermocouples, RTDs) without level-shifting circuitry. |
Applications
| Transducer Interface | Battery-Powered Monitoring |
|---|---|
Use Scenario: Amplifying low-level mV outputs from strain gauges, load cells, or pressure sensors in industrial test equipment. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail output driving 12-bit ADC reference range. Use Value: 950 µV max input offset and 1 pA bias current minimize zero-point drift and loading error, improving measurement repeatability over temperature. | Use Scenario: Signal conditioning in portable gas detectors or handheld environmental sensors powered by two AA cells. IC Role / Device Role / Timing Role: Quad-channel analog front-end providing simultaneous amplification and filtering for multiple sensor types (CO, humidity, temp). Use Value: 4.8 mA supply current at ±5 V enables >100-hour operation on 1200 mAh batteries; rail-to-rail output maximizes usable ADC code range. |
| White Goods Control | Analog Front-End for Data Acquisition |
Use Scenario: Motor current sensing and temperature monitoring in refrigerator compressor control modules. IC Role / Device Role / Timing Role: Quad op-amp performing current shunt amplification, NTC biasing, defrost heater monitoring, and fan tach conditioning. Use Value: Guaranteed operation from –40°C to +125°C (I-grade) and 75 dB CMRR suppress noise from switching power supplies and motor drivers. | Use Scenario: Multi-channel data logger acquiring synchronized analog inputs from thermocouples, accelerometers, and potentiometers. IC Role / Device Role / Timing Role: Input buffer and gain stage preceding multiplexer and 16-bit ADC, with matched channel performance. Use Value: Matched quad topology ensures consistent gain, offset, and noise across all four channels - reducing calibration complexity and inter-channel crosstalk. |
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 | Same LinCMOS process, identical AC specs, but rated for 0°C to 70°C (C-grade) vs. –40°C to 125°C (I-grade) for TLC2274CNSR-A. | Not qualified for extended temperature industrial or under-hood automotive use. | Select TLC2274CNSR-A for designs requiring guaranteed operation beyond 70°C ambient. |
| TLV2444IDR | Higher quiescent current (1.3 mA per amp), lower GBW (1.8 MHz), but improved input offset (150 µV max) and rail-to-rail input capability. | Supports true rail-to-rail input - advantageous for single-supply systems where input signals approach VDD− or VDD+. | Choose TLV2444IDR when input common-mode range beyond VDD− is required; TLC2274CNSR-A remains optimal for ultra-low bias current needs. |
Compared with TLC2274CDR and TLV2444IDR, the TLC2274CNSR-A uniquely balances ultra-low input bias current (1 pA), extended temperature operation (–40°C to 125°C), and rail-to-rail output - making it the preferred choice for high-impedance, wide-temperature sensor interfaces where long-term stability and minimal loading are critical.
Availability
TLC2274CNSR-A is available at Aetrix Electronics and suitable for industrial motor control, battery-powered instrumentation, and white goods sensor conditioning requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLC2274CNSR-A 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 specializing in analog, embedded processing, and digital signal solutions for industrial, automotive, and consumer markets.
The TLC227x family was designed to upgrade legacy TLC27x op-amps with rail-to-rail output, lower noise, and reduced input offset - targeting precision analog signal chains in cost-sensitive, high-reliability applications.
FAQ
What is the maximum operating temperature range for the TLC2274CNSR-A?
The TLC2274CNSR-A is an I-grade device specified for operation from –40°C to +125°C ambient temperature. This rating is validated per TI's recommended operating conditions and thermal derating guidelines, making it suitable for under-hood automotive and industrial control environments where thermal stress is significant. The TLC2274CNSR-A maintains all electrical specifications within this full range.
Does the TLC2274CNSR-A support single-supply operation?
Yes, the TLC2274CNSR-A is fully specified for single-supply operation - for example, with VDD+ = 5 V and VDD− = GND. Its common-mode input range extends to VDD−, and its rail-to-rail output swings within 10 mV of both rails under light loads. This enables direct interfacing with microcontroller ADCs and eliminates the need for dual supplies in portable and cost-sensitive designs.
What is the input offset voltage specification for the TLC2274CNSR-A?
The TLC2274CNSR-A is part of the "A" variant of the TLC2274 family and guarantees a maximum input offset voltage of 950 µV at TA = 25°C. Over the full –40°C to +125°C temperature range, the maximum is 1500 µV. This tighter offset spec differentiates it from the standard TLC2274 (3000 µV max over temperature) and improves DC accuracy in precision gain stages and sensor amplifiers.
Can the TLC2274CNSR-A drive capacitive loads?
The TLC2274CNSR-A is characterized for stable operation with up to 100 pF capacitive loads at unity gain, delivering 50° phase margin and 10 dB gain margin per TI's datasheet test conditions. For loads exceeding 100 pF, external isolation resistance (e.g., 10–100 Ω in series with the output) is recommended to maintain stability - especially in PCB traces or ADC input capacitance scenarios.
Is the TLC2274CNSR-A pin-compatible with other TLC2274 variants?
Yes, the TLC2274CNSR-A shares identical pinout and footprint with all TLC2274 variants in the SOIC-14 (N) package, including TLC2274CDR, TLC2274IDR, and TLC2274MJB. No PCB redesign is needed when upgrading from C-grade or M-grade versions - only qualification of the extended temperature and reliability performance of the I-grade TLC2274CNSR-A is required.
TLC2274CNSR-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SO
TLC2274CNSR-A FAQ
1.How can I place an order for TLC2274CNSR-A through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2274CNSR-A 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 TLC2274CNSR-A reliable?
The price and inventory of TLC2274CNSR-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2274CNSR-A is usually 5 days.
3.What payment methods are accepted for TLC2274CNSR-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2274CNSR-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2274CNSR-A?
TLC2274CNSR-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2274CNSR-A 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 TLC2274CNSR-A?
For technical support, including TLC2274CNSR-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2274CNSR-A requirements.
6.How does Aetrix verify that TLC2274CNSR-A is sourced from the original manufacturer or authorized distributors?
All TLC2274CNSR-A 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 TLC2274CNSR-A meets industry standards.
7.What is the process for return or replacement of TLC2274CNSR-A?
All TLC2274CNSR-A units undergo pre-shipment inspection (PSI). If there is an issue with TLC2274CNSR-A, 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 TLC2274CNSR-A part is unused and in its original packaging.
Return procedure for TLC2274CNSR-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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