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Texas Instruments OPA727AIDGKT
- Part No.:
- OPA727AIDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA727AIDGKT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:958
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Product details
Overview
OPA727AIDGKT from Texas Instruments is a single-channel, e-trim™ high-precision CMOS operational amplifier optimized for 4V–12V single-supply or ±2V–±6V dual-supply operation. It delivers 20MHz gain-bandwidth, 30V/µs slew rate, 150µV max input offset voltage, 1.5µV/°C max offset drift, and rail-to-rail output swing within 150mV of the rails - enabling high-fidelity signal conditioning in optical transimpedance amplifiers and 16-bit ADC drivers.
For engineers reviewing the OPA727AIDGKT datasheet, OPA727AIDGKT pinout, OPA727AIDGKT application, or OPA727AIDGKT equivalent, key selection criteria include its ultra-low offset drift, sub-500pA bias current, 6nV/√Hz noise at 100kHz, shutdown-free architecture (vs. OPA728), and MSOP-8 thermal performance with exposed die pad tied to V–.
Technical Context
The OPA727AIDGKT uses Texas Instruments' e-trim™ technology - a post-package digital trimming process that corrects offset and temperature drift after molding, avoiding stress-induced parameter shifts. Its CMOS input stage achieves 500pA max bias current and 10¹¹Ω||4pF common-mode input impedance, supporting high-impedance sensor interfaces.
It features an AB-class rail-to-rail output stage capable of driving ≥100kΩ loads to within 150mV of supply rails while maintaining >110dB open-loop gain, and is unity-gain stable with no phase inversion when inputs exceed supplies (with current limiting). The device operates across –40°C to +125°C and is specified over full 4V–12V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 20MHz - supports stable unity-gain operation and wideband active filtering up to ~15MHz closed-loop bandwidth. |
| Input Offset Voltage (max) | 150µV - enables <1LSB error in 16-bit systems with ±2.5V full-scale range (e.g., ADS8342 interface). |
| Offset Drift (max) | 1.5µV/°C - ensures <0.3mV total offset shift over –40°C to +85°C, critical for precision instrumentation. |
| Slew Rate | 30V/µs - allows clean 1MHz sine wave output at 10Vpp without distortion, suitable for fast-settling ADC drivers. |
| Input Bias Current (max) | 500pA - permits use with photodiodes >100pF capacitance and high-value feedback resistors in transimpedance designs. |
| Supply Voltage Range | 4V to 12V (single) or ±2V to ±6V (dual) - supports industrial 5V/12V rails and battery-powered equipment with low quiescent current (4.3mA/ch). |
| Output Swing (vs rail) | 150mV (RL ≥100kΩ) - maximizes dynamic range in single-supply systems, e.g., 0–5V ADC input buffers. |
| THD+N @ 1kHz | 0.0003% - meets high-end audio and spectral purity requirements in active filter and DAC output stages. |
Pinout & Package
OPA727AIDGKT is packaged in an 8-pin MSOP (VSSOP-8, DGK) with exposed thermal die pad on underside, requiring connection to V– for optimal thermal performance and reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Not bonded; must be left floating or grounded per layout guidelines - no functional impact. |
| 2 (V+) | Positive supply rail | Accepts 4V–12V single or +2V–+6V dual supply; bypass with 1nF ceramic || 1µF tantalum. |
| 3 (OUT) | Amplifier output | Rail-to-rail capable; drives capacitive loads up to 20pF in unity-gain; add 10–20Ω series resistor if ringing observed. |
| 4 (NC) | No internal connection | Not bonded; must be left floating or grounded - no electrical function. |
| 5 (NC) | No internal connection | Not bonded; floating or grounded per PCB layout best practices. |
| 6 (–IN) | Inverting input | High-impedance CMOS node; input protection diodes clamp to rails if voltage exceeds V± by >300mV (limit current to ≤10mA). |
| 7 (+IN) | Non-inverting input | Common-mode range extends from V– to (V+)–2.5V - supports true single-supply GND-referenced sensing. |
| 8 (V–) | Negative supply rail / ground | Reference for all signals; exposed die pad must be soldered to V– plane for thermal and mechanical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ post-package trimming | Digitally corrects offset and drift after plastic encapsulation, eliminating mold-stress-induced errors and guaranteeing 150µV/1.5µV/°C specs. |
| Rail-to-rail output stage | Swings to within 150mV of V+ and V– under light load, preserving >94% of 0–5V or ±5V dynamic range in data acquisition systems. |
| Ultra-low input bias current | ≤500pA max enables stable transimpedance gain >10⁹Ω with photodiode capacitances up to 100pF without oscillation. |
| High CMRR & PSRR | ≥94dB CMRR and ≥150dB PSRR minimize error from common-mode noise and supply ripple in precision analog front-ends. |
| Unity-gain stability | Stable with no external compensation required, simplifying design of gain-of-1 buffers for ADC input isolation and reference buffering. |
| Extended temperature range | Specified from –40°C to +125°C - qualified for automotive engine control, industrial PLC I/O, and downhole sensing applications. |
Applications
| Optical Transimpedance Amplifier | 16-Bit ADC Driver |
|---|---|
Use Scenario: Monitoring optical power in ONET modules using PIN photodiodes with 10–50pF junction capacitance. IC Role / Device Role / Timing Role: Converts photocurrent to voltage with programmable gain (e.g., 10kΩ–10MΩ RF), leveraging 500pA bias current and 20MHz GBW for >1MHz bandwidth. Use Value: Enables sub-150µV offset error and <0.0003% THD+N in fiber-optic receiver front-ends, meeting Telcordia GR-468-CORE reliability requirements. | Use Scenario: Driving the analog input of TI's ADS8342 16-bit, 250kSPS SAR ADC in industrial data loggers. IC Role / Device Role / Timing Role: Provides low-noise, fast-settling (450ns to 0.01%) buffering and gain before the ADC's 600ns acquisition window. Use Value: Achieves full 16-bit accuracy without missing codes, even with ±2.5V input range and 330pF input capacitance, verified in TI SBOA055 application note. |
| High-Fidelity Active Filter | Process Control Signal Conditioning |
Use Scenario: Implementing 4-pole Butterworth low-pass filters at 50kHz cutoff for anti-aliasing in test equipment. IC Role / Device Role / Timing Role: Configured as Sallen-Key topology with OPA2727 dual version; OPA727AIDGKT used for single-stage gain blocks. Use Value: Maintains <0.01% group delay variation and 110dB open-loop gain across temperature, ensuring flat passband response in spectrum analyzers. | Use Scenario: Isolating and scaling 4–20mA loop signals in PLC analog input modules operating from –40°C to +85°C. IC Role / Device Role / Timing Role: Acts as precision I/V converter and level shifter with 150µV offset, referenced to system ground with rail-to-rail output. Use Value: Delivers <0.1% total unadjusted error over full temperature range, meeting IEC 61000-4-4 immunity and SIL-2 functional safety margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA727AIDGKR | Same silicon, identical specs, but in tape-and-reel (2500 pcs) vs. cut-tape (OPA727AIDGKT); same MSOP-8 package and AUE marking. | No functional difference; intended for automated SMT assembly rather than prototyping or low-volume hand-soldering. | Select OPA727AIDGKT for evaluation, small-batch builds, or where cut-tape packaging is required. |
| OPA2727AIDRBR | Dual-channel version in DFN-8 (NSD marking); shares 20MHz GBW, 150µV offset, and e-trim, but adds channel-to-channel isolation and lower thermal resistance (46°C/W vs. 150°C/W). | Used where space-constrained dual-signal paths exist (e.g., differential sensor pairs), not direct replacement for single-channel needs. | Choose OPA2727AIDRBR only when dual amplification is required and DFN thermal performance justifies re-layout. |
Compared with OPA727AIDGKR and OPA2727AIDRBR, the OPA727AIDGKT offers identical electrical performance in a convenient cut-tape format ideal for engineering validation and pilot production, while avoiding unnecessary channel duplication or package change overhead.
Availability
OPA727AIDGKT is available at Aetrix Electronics and suitable for optical networking transimpedance amplifiers, 16-bit ADC driver circuits, and high-precision process control signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for OPA727AIDGKT 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 ICs, embedded processors, and connectivity solutions for industrial, automotive, and communications markets.
The OPA727 series belongs to TI's precision op amp product line, designed specifically for applications demanding ultra-low offset drift, rail-to-rail output, and high-speed precision - including optical sensing, data acquisition, and test instrumentation.
FAQ
What is the maximum operating temperature range for the OPA727AIDGKT?
The OPA727AIDGKT is fully specified from –40°C to +125°C and operates reliably across this range. Absolute maximum junction temperature is +150°C, and storage temperature extends to +150°C. Thermal resistance θJA is 150°C/W for the MSOP-8 package, so proper PCB copper pour under the exposed die pad (connected to V–) is essential to maintain performance at high ambient temperatures.
Does the OPA727AIDGKT support single-supply operation with input referenced to ground?
Yes, the OPA727AIDGKT supports true single-supply operation with input common-mode range extending to V– (ground), enabling GND-referenced sensor interfaces like thermocouple amplifiers or current-sense circuits. Its rail-to-rail output swings to within 150mV of V–, preserving dynamic range in 0–5V systems without level-shifting circuitry.
How does the e-trim™ technology in the OPA727AIDGKT improve long-term stability?
The e-trim™ technology in the OPA727AIDGKT performs digital offset and drift calibration after plastic encapsulation, eliminating parametric shifts caused by mold compound stress. This ensures the guaranteed 150µV max offset and 1.5µV/°C max drift remain stable over time and temperature - unlike laser-trimmed or pre-mold trimmed op amps where packaging induces post-calibration drift.
Can the OPA727AIDGKT drive capacitive loads without oscillation?
The OPA727AIDGKT is unity-gain stable and can drive up to 20pF capacitive loads in G = +1 configuration. For larger loads or higher gains, adding a 10–20Ω series resistor inside the feedback loop (between output and inverting input) suppresses ringing while preserving DC accuracy - a technique validated in TI's SBOS314H datasheet Figure 30.
What is the purpose of the exposed thermal die pad on the OPA727AIDGKT MSOP-8 package?
The exposed thermal die pad on the OPA727AIDGKT must be soldered to a PCB copper area connected to V–. It reduces thermal resistance (θJA) by ~30%, improves power dissipation capability, and enhances mechanical reliability during thermal cycling and board flex. Leaving it unconnected degrades long-term stability and may cause premature failure under sustained 4.3mA quiescent current.
OPA727AIDGKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 30V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 85 pA
- Voltage - Input Offset:
- 15 µV
- Current - Supply:
- 4.3mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA727AIDGKT FAQ
1.How can I place an order for OPA727AIDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA727AIDGKT 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 OPA727AIDGKT reliable?
The price and inventory of OPA727AIDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA727AIDGKT is usually 5 days.
3.What payment methods are accepted for OPA727AIDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA727AIDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA727AIDGKT?
OPA727AIDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA727AIDGKT 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 OPA727AIDGKT?
For technical support, including OPA727AIDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA727AIDGKT requirements.
6.How does Aetrix verify that OPA727AIDGKT is sourced from the original manufacturer or authorized distributors?
All OPA727AIDGKT 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 OPA727AIDGKT meets industry standards.
7.What is the process for return or replacement of OPA727AIDGKT?
All OPA727AIDGKT units undergo pre-shipment inspection (PSI). If there is an issue with OPA727AIDGKT, 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 OPA727AIDGKT part is unused and in its original packaging.
Return procedure for OPA727AIDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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