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Texas Instruments TLC2272CD
- Part No.:
- TLC2272CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2272CD.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,931
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Product details
Overview
TLC2272CD from Texas Instruments is a dual rail-to-rail output operational amplifier designed for precision signal conditioning in single- or split-supply systems. It delivers 2.2-MHz gain-bandwidth, 3.6-V/µs slew rate, 9 nV/√Hz input voltage noise at 1 kHz, ±5 V supply operation, and rail-to-rail output swing - enabling high-fidelity interfacing with ADCs in battery-powered sensor front-ends.
For engineers reviewing the TLC2272CD datasheet, TLC2272CD pinout, TLC2272CD application, or TLC2272CD equivalent, key selection considerations include its 1-pA typical input bias current, 950-µV maximum input offset voltage (A-grade), low-noise performance, common-mode input range extending to the negative rail, and compatibility with 2.2-V to ±8-V supply configurations.
Technical Context
The TLC2272CD employs advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining low input bias current and low noise. Its input stage supports common-mode voltages down to the negative supply rail, and its unity-gain-stable architecture ensures robust performance with capacitive loads up to 100 pF.
It operates across ±2.2 V to ±8 V supply ranges, with specified performance at ±5 V and 5 V single-supply conditions. The device exhibits 75–80 dB CMRR and 80–95 dB PSRR, supporting precision DC-coupled amplification in noisy industrial or portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.2 V to ±8 V - supports wide-range split supplies including standard ±5 V and low-voltage ±2.5 V systems |
| Gain-Bandwidth Product | 2.25 MHz - enables stable closed-loop operation up to ~200 kHz with moderate gain (e.g., G = 10) |
| Slew Rate | 3.6 V/µs - supports clean 100-kHz, 2-VPP sine wave output without distortion |
| Input Offset Voltage (max) | 950 µV - ensures ≤0.02% error in 5-V full-scale instrumentation amplifier stages |
| Input Bias Current (typ) | 1 pA - preserves signal integrity when amplifying from >1-GΩ sources (e.g., piezoelectric sensors) |
| Input Voltage Noise | 9 nV/√Hz at 1 kHz - 2× lower than TLC272, critical for low-level transducer signal recovery |
| Common-Mode Input Range | Extends to VDD− - allows direct sensing of signals referenced to ground in single-supply configurations |
Pinout & Package
Package: SOIC-8 (3.91 mm × 4.90 mm), RoHS-compliant, plastic body with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplified output of Channel 1; rail-to-rail swing supports full dynamic range into ADC inputs |
| 2 | IN− A | Inverting input of Channel 1; high-impedance node (10¹² Ω) minimizes loading on feedback networks |
| 3 | IN+ A | Non-inverting input of Channel 1; accepts common-mode signals down to VDD− (ground in single-supply) |
| 4 | VDD−/GND | Negative supply or ground reference; shared return path for both amplifiers and external circuitry |
| 5 | IN+ B | Non-inverting input of Channel 2; electrically isolated from Channel 1 for dual-path signal processing |
| 6 | IN− B | Inverting input of Channel 2; supports independent feedback configuration per channel |
| 7 | OUT B | Amplified output of Channel 2; identical AC/DC specs to OUT A for matched dual-channel performance |
| 8 | VDD+ | Positive supply rail; must be ≥|VDD−| + 4.4 V for full rail-to-rail output compliance |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers >99% of supply rails (e.g., 0.01 V to 4.99 V on 5-V supply), maximizing ADC utilization |
| Low input bias current (1 pA typ) | Enables high-impedance sensor interfaces (e.g., pH electrodes, photodiode TIA) without significant offset drift |
| Low input voltage noise (9 nV/√Hz) | Reduces integrated noise floor in 10-Hz–10-kHz bandwidths by ~30% vs. TLC272, improving SNR in audio/sensor paths |
| Specified for single- and split-supply operation | Eliminates need for separate design variants - same part qualifies for 3.3-V microcontroller I/O and ±5-V analog backplanes |
| Input common-mode range includes negative rail | Permits direct amplification of ground-referenced signals (e.g., bridge sensor outputs) without level-shifting circuitry |
Applications
| Transducer Interface | Battery-Powered Monitoring |
|---|---|
Use Scenario: Amplifying low-level mV-output signals from load cells, strain gauges, or thermopiles in industrial weighing systems. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail output driving 12-bit SAR ADCs. Use Value: 1-pA input bias avoids gain error in high-Rf configurations; 950-µV max Vos limits zero-scale error to <0.02% FS. |
Use Scenario: Signal conditioning in handheld gas detectors using electrochemical sensors with µA-level output currents. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier and filter stage operating from coin-cell batteries. Use Value: 2.4-mA supply current at ±5 V enables >1-year runtime; rail-to-rail output maximizes dynamic range into low-voltage ADCs. |
| White Goods Control | ADC Driver for Data Acquisition |
Use Scenario: Motor current sensing and temperature monitoring in refrigerator compressor control modules. IC Role / Device Role / Timing Role: Dual-channel signal conditioner: one channel for shunt-based current sense, one for NTC biasing and amplification. Use Value: Common-mode input range to VDD− allows direct connection to grounded shunts; dual layout reduces board area vs. two singles. |
Use Scenario: Driving the input of 16-bit delta-sigma ADCs (e.g., ADS1256) in portable data loggers. IC Role / Device Role / Timing Role: Buffered, low-noise gain stage with optimized settling (<2.6 µs to 0.01%) before ADC sampling. Use Value: 3.6-V/µs slew rate and 52° phase margin ensure stable 100-kSPS acquisition without overshoot or ringing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2272IDR | Same silicon, Industrial-temp (–40°C to +125°C) grade; identical electrical specs but wider operating temperature range | Required for under-hood automotive or factory-floor industrial deployments where ambient exceeds 70°C | Select TLC2272IDR when extended temperature qualification is mandatory; pinout and footprint are identical. |
| TLV2432CDR | Higher output drive (±30 mA vs. ±50 mA), wider input voltage range (to VDD+ – 0.8 V), but higher input offset (1.5 mV max) and noise (12 nV/√Hz) | Better suited for driving heavy capacitive loads or higher-voltage sensor interfaces where precision is secondary to drive strength | Choose TLV2432CDR only when output current >50 mA or input headroom >1.5 V is required - not a drop-in replacement for precision roles. |
Compared with TLC2272IDR, the TLC2272CD offers identical performance at lower cost for commercial-temperature applications; versus TLV2432CDR, it trades output drive for superior DC accuracy and noise, making it optimal for high-resolution sensor signal chains rather than power-output stages.
Availability
TLC2272CD is available at Aetrix Electronics and suitable for white goods control, handheld monitoring systems, and transducer interface applications requiring stable component supply and long-term manufacturability.
Supply support for TLC2272CD 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 solutions, with decades of expertise in precision op-amps and signal-chain ICs.
The TLC227x family was engineered to upgrade legacy TLC27x designs with rail-to-rail output, lower noise, and improved input offset - targeting high-impedance, low-power, and precision measurement applications.
FAQ
What supply voltage ranges does the TLC2272CD support?
The TLC2272CD operates from ±2.2 V to ±8 V in split-supply mode and from 4.4 V to 16 V in single-supply mode. At ±5 V, it delivers full rail-to-rail output swing, low distortion, and guaranteed 2.25-MHz gain-bandwidth. The device remains functional down to ±2.2 V, though bandwidth and slew rate scale accordingly - verified per TI SLOS190H datasheet Section 6.3.
Is the TLC2272CD pin-compatible with the TLC272 series?
Yes, the TLC2272CD uses the same SOIC-8 pinout as the TLC272CP and TLC272IP, enabling direct PCB replacement. However, the TLC2272CD adds rail-to-rail output capability, lower input bias current (1 pA vs. 100 pA), and reduced input voltage noise (9 nV/√Hz vs. 25 nV/√Hz), which may require minor loop compensation review in high-gain stages.
What is the maximum input common-mode voltage for the TLC2272CD?
At ±5 V supply, the TLC2272CD accepts input voltages from VDD− (–5 V) to VDD+ – 1.5 V (+3.5 V), per Section 6.3 of the datasheet. Its common-mode range includes the negative rail, allowing ground-referenced inputs in single-supply configurations - a key differentiator from older CMOS op-amps like the TLC272.
Does the TLC2272CD require external compensation for unity-gain stability?
No, the TLC2272CD is internally compensated for unity-gain stability. It maintains ≥50° phase margin with 100-pF capacitive load at AV = 1, as confirmed in Sections 6.5 and 6.6 of the datasheet. This eliminates need for external compensation components in standard inverting/non-inverting configurations.
How does the TLC2272CD's input offset voltage compare to the TLC2272A variant?
The TLC2272CD has a maximum input offset voltage of 2500 µV at 25°C, while the TLC2272A variant is binned to 950 µV maximum - same package and pinout, but tighter DC specifications. Both share identical AC performance (bandwidth, slew rate, noise); the 'A' suffix denotes enhanced precision grading for applications demanding sub-millivolt accuracy.
TLC2272CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 2
- 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:
- 2.4mA (x2 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:
- 8-SOIC
TLC2272CD FAQ
1.How can I place an order for TLC2272CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2272CD 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 TLC2272CD reliable?
The price and inventory of TLC2272CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2272CD is usually 5 days.
3.What payment methods are accepted for TLC2272CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2272CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2272CD?
TLC2272CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2272CD 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 TLC2272CD?
For technical support, including TLC2272CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2272CD requirements.
6.How does Aetrix verify that TLC2272CD is sourced from the original manufacturer or authorized distributors?
All TLC2272CD 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 TLC2272CD meets industry standards.
7.What is the process for return or replacement of TLC2272CD?
All TLC2272CD units undergo pre-shipment inspection (PSI). If there is an issue with TLC2272CD, 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 TLC2272CD part is unused and in its original packaging.
Return procedure for TLC2272CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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