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Texas Instruments TLC2272QDG4
- Part No.:
- TLC2272QDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2272QDG4.pdf
- Description:
- IC CMOS 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,794
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Product details
Overview
TLC2272QDG4 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 TLC2272QDG4 datasheet, TLC2272QDG4 pinout, TLC2272QDG4 application, or TLC2272QDG4 equivalent, key selection considerations include its Q-temp automotive qualification (–40°C to 125°C), low 1-pA input bias current, 950-µV max input offset voltage (A-grade), rail-to-rail output capability, and SOIC-8 packaging for industrial sensing and transducer interface designs.
Technical Context
The TLC2272QDG4 employs advanced LinCMOS process technology to achieve rail-to-rail output swing while maintaining low input bias current (1 pA typ) and low noise (9 nV/√Hz). Its input stage operates down to the negative rail, supporting true single-supply operation with common-mode input range extending to VDD−.
It features unity-gain stable compensation, 50° phase margin, and 10 dB gain margin under 10-kΩ load and 100-pF capacitive load conditions. The device is fully characterized across ±2.2 V to ±8 V supply range and supports both AC-coupled and DC-coupled configurations in precision amplification stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.2 V to ±8 V - supports wide-range split supplies and single-supply operation via level-shifted reference. |
| Gain-Bandwidth Product | 2.25 MHz - enables stable closed-loop gain up to ~10× at 200 kHz for anti-aliasing or sensor amplification. |
| Slew Rate | 3.6 V/µs - supports 10-Vpp signals up to ~57 kHz full-power bandwidth without distortion. |
| Input Offset Voltage (max) | 950 µV - ensures ≤0.019% error in 5-V full-scale measurement systems at room temperature. |
| Input Bias Current (typ) | 1 pA - minimizes voltage error across high-impedance sources like piezoelectric sensors or pH electrodes. |
| Input Voltage Noise | 9 nV/√Hz at 1 kHz - provides superior SNR vs. standard CMOS op-amps for low-level analog signal conditioning. |
| Common-Mode Input Range | Includes VDD− - allows direct sensing of signals referenced to ground in single-supply configurations. |
| Output Swing | Rail-to-rail - delivers >99% of supply voltage range, maximizing dynamic range into ADCs or downstream stages. |
Pinout & Package
The TLC2272QDG4 is housed in an 8-pin SOIC package (body size 3.91 mm × 4.90 mm) with standard industry footprint and thermal characteristics (θJA = 83.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output, Channel 1 | Amplified output node for first op-amp; rail-to-rail capable, drives loads ≥10 kΩ. |
| 1IN− | Inverting input, Channel 1 | Differential input terminal; accepts signals within VDD− to (VDD+ −1.5 V) common-mode range. |
| 1IN+ | Non-inverting input, Channel 1 | Differential input terminal; same common-mode range as 1IN−; low 1-pA bias current preserves source integrity. |
| VDD−/GND | Negative supply / Ground | Reference for split-supply (VDD−) or ground return in single-supply mode; connects directly to system GND plane. |
| VDD+ | Positive supply | Primary power rail; supports up to +8 V; decoupling capacitor required near pin per layout guidelines. |
| 2IN− | Inverting input, Channel 2 | Second amplifier's inverting input; electrically isolated from Channel 1; shares same bias and noise specs. |
| 2IN+ | Non-inverting input, Channel 2 | Second amplifier's non-inverting input; identical performance to 1IN+; enables dual-channel signal paths. |
| 2OUT | Output, Channel 2 | Independent rail-to-rail output; usable in parallel or differential configurations with Channel 1. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full supply voltage range output (e.g., 0 V to 5 V on 5-V single supply), maximizing ADC utilization and dynamic range. |
| Low input bias current (1 pA typ) | Enables accurate amplification of microcurrent sources (e.g., photodiodes, ion-selective electrodes) without significant loading error. |
| Low input voltage noise (9 nV/√Hz) | Reduces contribution to total system noise floor in high-gain sensor interfaces, especially at audio and sub-audio frequencies. |
| Q-temp automotive qualification | Rated for –40°C to +125°C operation with AEC-Q100 stress testing, suitable for engine control, cabin sensors, and ADAS front-end circuits. |
| Fully specified for single- and split-supply use | Eliminates need for separate design variants - same electrical behavior verified across 5-V single and ±5-V dual supply configurations. |
| Macromodel included | SPICE model provided by TI enables accurate simulation of transient response, stability, and noise performance before prototyping. |
Applications
| Transducer Interface | Battery-Powered Monitoring |
|---|---|
Use Scenario: Amplifying low-level mV-output signals from strain gauges, thermopiles, or piezoelectric accelerometers in industrial test equipment. IC Role / Device Role: Precision DC-coupled instrumentation amplifier front-end with rail-to-rail output driving 12-bit SAR ADC inputs. Use Value: 1-pA input bias prevents signal loss across high-Z transducer bridges; rail-to-rail swing ensures full ADC code utilization over temperature. | Use Scenario: Signal conditioning in portable gas detectors or handheld ECG monitors powered by coin-cell or Li-ion batteries. IC Role / Device Role: Dual-channel low-power op-amp for sensor biasing, filtering, and level-shifting prior to MCU ADC sampling. Use Value: 2.4-mA supply current per channel enables multi-day operation; rail-to-rail output maintains accuracy across declining battery voltage (down to ±2.2 V). |
| White Goods Control | Analog Front-End for Data Acquisition |
Use Scenario: Temperature and motor current sensing in refrigerator compressor control modules operating in harsh ambient environments. IC Role / Device Role: Dual op-amp implementing current-sense amplifier and PT100 linearization circuitry. Use Value: Q-temp qualification ensures reliability at 125°C ambient; 950-µV max VIO limits temperature reading error to <±0.5°C in 0–100°C range. | Use Scenario: High-fidelity analog signal chain in modular data loggers acquiring vibration, pressure, and humidity from multiple sensors. IC Role / Device Role: Dual-channel buffer and gain stage preceding multiplexed 16-bit delta-sigma ADC. Use Value: 9 nV/√Hz noise and 2.25-MHz GBW support 100-dB SNR at 1-kHz bandwidth; dual configuration reduces board space vs. two singles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2432IDR | Higher 1.8-mA/channel supply current; lower 1.2-V/µs slew rate; 1.2-mV max VIO; no Q-temp rating. | Targeted at cost-sensitive consumer electronics, not automotive or extended-temperature industrial use. | Select when lower cost and adequate AC performance suffice, and AEC-Q100 compliance is unnecessary. |
| OPA2333AIDR | Zero-drift architecture; 0.02-µV/°C drift; 60-nA max IIB; higher 17-µVpp 0.1–10 Hz noise; 350-kHz GBW. | Optimized for ultra-low drift DC applications (e.g., precision weight scales), not medium-speed signal conditioning. | Select when microvolt-level offset stability over temperature is critical, and bandwidth requirements are <500 kHz. |
Compared with TLV2432IDR and OPA2333AIDR, the TLC2272QDG4 offers superior slew rate and noise performance for medium-speed sensor interfaces, combined with automotive-grade temperature range and proven robustness in transducer front-ends - making it optimal for demanding industrial and automotive signal chains where speed, noise, and reliability are balanced.
Availability
TLC2272QDG4 is available at Aetrix Electronics and suitable for white goods control, battery-powered monitoring systems, and transducer interface applications requiring stable component supply across automotive and industrial temperature ranges.
Supply support for TLC2272QDG4 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, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLC227x family was engineered as a performance upgrade to the TLC27x series, targeting precision rail-to-rail op-amp applications in sensor signal conditioning, data acquisition, and automotive subsystems where low noise, low input bias, and wide supply range are essential.
FAQ
What is the maximum operating temperature range for the TLC2272QDG4?
The TLC2272QDG4 is qualified for operation from –40°C to +125°C, meeting AEC-Q100 Grade 2 requirements for automotive applications. This extended range is validated across all electrical parameters in the datasheet, including input offset voltage, common-mode range, and output drive capability - ensuring reliable performance in engine bay or under-hood environments where ambient temperatures exceed 105°C.
Does the TLC2272QDG4 support true single-supply operation with input signals referenced to ground?
Yes, the TLC2272QDG4 supports true single-supply operation: its common-mode input voltage range includes the negative rail (VDD−/GND), allowing inputs down to 0 V when powered from a single 5-V supply. Combined with rail-to-rail output swing, this enables direct interfacing with ground-referenced sensors and full utilization of ADC input ranges without level-shifting circuitry - simplifying design in portable and industrial systems.
How does the input offset voltage specification of the TLC2272QDG4 compare to the standard TLC2272 variant?
The TLC2272QDG4 is part of the TLC2272A subfamily and specifies a maximum input offset voltage of 950 µV at TA = 25°C, versus 2500 µV for the base TLC2272. This tighter VIO spec improves DC accuracy in precision gain stages and reduces calibration burden in measurement systems - particularly valuable in automotive cabin sensors and industrial process controllers where long-term stability matters.
Can the TLC2272QDG4 drive capacitive loads without instability?
The TLC2272QDG4 is unity-gain stable with a phase margin of 52° and gain margin of 10 dB when driving a 100-pF capacitive load with 10-kΩ series resistance, as verified in the datasheet. For direct capacitive loads >100 pF, external isolation resistance (≥100 Ω) is recommended. Layout best practices - including short traces, local bypassing, and ground plane integrity - are essential to maintain stability in high-frequency sensor interfaces using the TLC2272QDG4.
Is the TLC2272QDG4 pin-compatible with other devices in the TLC227x family?
Yes, the TLC2272QDG4 uses the standard 8-pin SOIC pinout shared across all TLC2272 variants (including TLC2272, TLC2272A, TLC2272M, and TLC2272AM), enabling drop-in replacement within the same package type. This compatibility extends to PCB layout, thermal design, and schematic symbol usage - simplifying qualification and migration between performance grades (e.g., upgrading from C-grade to Q-grade) without hardware revision.
TLC2272QDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC2272QDG4 FAQ
1.How can I place an order for TLC2272QDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2272QDG4 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 TLC2272QDG4 reliable?
The price and inventory of TLC2272QDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2272QDG4 is usually 5 days.
3.What payment methods are accepted for TLC2272QDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2272QDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2272QDG4?
TLC2272QDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2272QDG4 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 TLC2272QDG4?
For technical support, including TLC2272QDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2272QDG4 requirements.
6.How does Aetrix verify that TLC2272QDG4 is sourced from the original manufacturer or authorized distributors?
All TLC2272QDG4 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 TLC2272QDG4 meets industry standards.
7.What is the process for return or replacement of TLC2272QDG4?
All TLC2272QDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC2272QDG4, 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 TLC2272QDG4 part is unused and in its original packaging.
Return procedure for TLC2272QDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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