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Texas Instruments OPA727AIDRBRG4
- Part No.:
- OPA727AIDRBRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
OPA727AIDRBRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:2,856
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Product details
Overview
OPA727AIDRBRG4 from Texas Instruments is a single-channel, e-trim™ high-precision CMOS operational amplifier in an 8-pin DFN (DRB) package. It delivers 20MHz gain-bandwidth, 30V/µs slew rate, 150µV max input offset voltage, 1.5µV/°C max drift, and 6nV/√Hz noise at 100kHz - optimized for transimpedance amplifiers, precision active filters, and 16-bit ADC drivers in optical networking and test equipment.
For engineers reviewing the OPA727AIDRBRG4 datasheet, OPA727AIDRBRG4 pinout, OPA727AIDRBRG4 application, or OPA727AIDRBRG4 equivalent, key selection criteria include rail-to-rail output swing (150mV from rails), low 4.3mA quiescent current, ±500pA max input bias current, operation from 4V to 12V supply, and –40°C to +125°C temperature range.
Technical Context
The OPA727AIDRBRG4 uses Texas Instruments' e-trim™ technology - digital post-package trimming that corrects offset and drift after molding, avoiding stress-induced parameter shifts. Its CMOS input stage enables ultra-low bias current (<500pA) and high input impedance (10¹¹ Ω || 5pF), while the AB output stage supports rail-to-rail swing into 100kΩ loads with >110dB open-loop gain.
It features full ac performance validation across 4V–12V supplies and –40°C to +125°C, including 0.0003% THD+N at 1kHz, 350ns 0.1% settling time, and stable unity-gain operation. Input common-mode range extends from V– to (V+) – 2.5V, enabling true single-supply functionality with ground-referenced inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 20MHz - supports stable unity-gain operation and wideband signal conditioning up to ~15MHz closed-loop bandwidth. |
| Input Offset Voltage (max) | 150µV - enables sub-16-bit error in precision sensor interfaces without external nulling. |
| Offset Drift (max) | 1.5µV/°C - ensures <180µV total drift over –40°C to +125°C, critical for uncalibrated industrial systems. |
| Slew Rate | 30V/µs - allows clean 5V step response in ≤350ns (0.1%), suitable for driving fast SAR ADCs like ADS8342. |
| Input Bias Current (max) | 500pA - permits high-impedance photodiode transimpedance designs with minimal dark-current error. |
| Supply Voltage Range | 4V to 12V - compatible with both single-supply (5V, 12V) and split-supply (±2V to ±6V) configurations. |
| Quiescent Current | 4.3mA per amplifier - balances precision performance with power efficiency in battery-operated instrumentation. |
| Output Swing (vs rail) | 150mV into 100kΩ - maximizes dynamic range in 12V systems, delivering >11.7Vpp output swing. |
Pinout & Package
OPA727AIDRBRG4 is housed in an 8-pin DFN (DRB) package with exposed thermal die pad on underside, requiring connection to V– for optimal thermal performance and reliability. The package is lead-free, RoHS-compliant, and rated MSL Level-3 (260°C, 168 hours).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Must be left floating or grounded; no functional role in circuit operation. |
| 2 (V+) | Positive supply rail | Accepts 4V–12V single supply or +2V–+6V of dual supply; bypass with 1nF ceramic + 1µF tantalum. |
| 3 (OUT) | Amplifier output | Rail-to-rail capable; drives ≥40mA; swing limited to 150mV from V+ or V– under light load. |
| 4 (NC) | No internal connection | Must be left floating or grounded; no functional role in circuit operation. |
| 5 (NC) | No internal connection | Must be left floating or grounded; no functional role in circuit operation. |
| 6 (–IN) | Inverting input | High-impedance CMOS node; accepts common-mode voltage from V– to (V+) – 2.5V. |
| 7 (+IN) | Non-inverting input | High-impedance CMOS node; same common-mode range as –IN; requires current limiting if driven beyond rails. |
| 8 (V–) | Negative supply rail / Ground reference | Connects to system ground (single-supply) or negative rail (dual-supply); thermal die pad must be soldered to V– plane. |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ post-package digital trimming | Eliminates offset drift induced by plastic molding stress, achieving 150µV max VOS and 1.5µV/°C max drift over full temperature range. |
| Rail-to-rail output stage | Delivers 150mV from supply rails into 100kΩ, preserving >98% of 12V supply dynamic range for high-resolution data acquisition. |
| Ultra-low input bias current | ≤500pA max enables transimpedance gains >10⁹ V/A with photodiodes having >100pF capacitance without significant error. |
| Low 1/f and broadband noise | 6nV/√Hz at 100kHz and 10µVPP (0.1–10Hz) support precision DC-coupled sensor front-ends and audio-grade filtering. |
| High CMRR and PSRR | ≥94dB CMRR and ≥150dB PSRR minimize error from ground bounce and supply ripple in noisy industrial environments. |
| Stable unity-gain operation | Guaranteed phase margin >60° with 20pF capacitive load; no external compensation required for most buffer applications. |
Applications
| Optical Power Monitoring | High-Resolution Data Acquisition |
|---|---|
|
Use Scenario: Monitoring received optical power in ONET-compliant SFP+ modules using a PIN photodiode. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photocurrent to voltage with gain up to 10⁶ V/A. Use Value: 500pA max bias current prevents diode leakage error; 6nV/√Hz noise preserves SNR for sub-nW detection thresholds. |
Use Scenario: Driving the input of a 16-bit, 250kSPS SAR ADC (e.g., ADS8342) in portable test equipment. IC Role / Device Role / Timing Role: Precision buffer and gain stage with fast settling to 16-bit accuracy within 600ns acquisition window. Use Value: 350ns 0.1% settling and 30V/µs slew rate ensure full-scale step fidelity; rail-to-rail output matches ±2.5V ADC input range. |
| Precision Active Filtering | Process Control Signal Conditioning |
|
Use Scenario: Implementing a 4-pole Butterworth low-pass filter at 50kHz in medical sensor signal chains. IC Role / Device Role / Timing Role: High-gain, low-distortion op amp in Sallen-Key topology with 0.0003% THD+N at 1kHz. Use Value: 20MHz GBW supports filter Q-factor stability; 110dB open-loop gain minimizes passband gain error (<0.01%). |
Use Scenario: Isolating and scaling 4–20mA loop signals in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift, high-CMRR amplifier for RTD or thermocouple front-end with cold-junction compensation. Use Value: 1.5µV/°C max drift prevents temperature-induced zero-error drift; 4.3mA IQ enables low-power field instrumentation. |
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 |
|---|---|---|---|
| OPA727AIDGKTG4 | Same core specs, but in MSOP-8 (DGK) package with AUE marking; thermal resistance θJA = 150°C/W vs 46°C/W for DRB. | Less efficient heat dissipation; unsuitable for high-ambient or high-output-current applications where DFN's thermal pad is critical. | Select OPA727AIDRBRG4 when board space, thermal performance, or high-reliability temperature cycling is required. |
| OPA2727AIDRBRG4 | Dual-channel version in identical DFN-8 package; shares all electrical specs per channel, but adds crosstalk and layout coupling considerations. | Enables dual-path signal processing (e.g., differential input buffering) but requires careful PCB partitioning to maintain channel separation >100dB. | Choose OPA2727AIDRBRG4 only when two matched, low-drift amplifiers are needed on the same die - not as a drop-in replacement. |
Compared with OPA727AIDGKTG4, the OPA727AIDRBRG4 offers superior thermal management and smaller footprint; compared with OPA2727AIDRBRG4, it provides dedicated single-channel optimization without inter-channel interaction, simplifying layout and calibration.
Availability
OPA727AIDRBRG4 is available at Aetrix Electronics and suitable for optical networking transceivers, portable test equipment, and industrial process controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA727AIDRBRG4 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 technologies, with decades of expertise in precision amplifiers and signal-chain solutions.
The OPA727AIDRBRG4 belongs to TI's e-trim™ precision op amp product line, designed specifically for applications demanding ultra-low offset, minimal drift, and high-speed ac performance in harsh thermal environments.
FAQ
What is the maximum operating temperature range for the OPA727AIDRBRG4?
The OPA727AIDRBRG4 is fully specified and tested from –40°C to +125°C, with absolute maximum junction temperature rated at +150°C. Its e-trim™ calibration ensures 150µV max offset and 1.5µV/°C max drift remain valid across this full industrial temperature range, making it suitable for under-hood automotive and industrial control applications.
Does the OPA727AIDRBRG4 support single-supply operation?
Yes, the OPA727AIDRBRG4 is optimized for true single-supply operation from 4V to 12V. Its input common-mode range extends to V– (ground), and its rail-to-rail output swings within 150mV of both rails - enabling direct interfacing with microcontrollers and ADCs without level-shifting circuitry.
What is the purpose of the exposed thermal pad on the OPA727AIDRBRG4 DFN package?
The exposed thermal die pad on the OPA727AIDRBRG4 must be soldered to a PCB copper plane connected to V–. This reduces thermal resistance (θJA = 46°C/W) and improves long-term reliability during temperature cycling and mechanical stress testing - a requirement explicitly stated in TI's DFN layout guidelines.
Can the OPA727AIDRBRG4 drive heavy capacitive loads?
The OPA727AIDRBRG4 is stable with 20pF capacitive load in unity-gain configuration. For heavier loads (>50pF), a 10Ω–20Ω series resistor inside the feedback loop (as shown in TI's SBOS314H Figure 30) suppresses ringing while maintaining DC accuracy - a proven method validated in transimpedance and ADC driver applications.
How does e-trim™ technology improve performance versus standard trim methods?
e-trim™ performs digital offset and drift correction *after* packaging, eliminating parametric shifts caused by mold compound stress. This yields 150µV max VOS and 1.5µV/°C max drift - significantly tighter than pre-trimmed alternatives like OPA725 (3mV max VOS, 4µV/°C drift) - directly enhancing accuracy in uncalibrated systems.
OPA727AIDRBRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-SON (3x3)
OPA727AIDRBRG4 FAQ
1.How can I place an order for OPA727AIDRBRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA727AIDRBRG4 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 OPA727AIDRBRG4 reliable?
The price and inventory of OPA727AIDRBRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA727AIDRBRG4 is usually 5 days.
3.What payment methods are accepted for OPA727AIDRBRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA727AIDRBRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA727AIDRBRG4?
OPA727AIDRBRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA727AIDRBRG4 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 OPA727AIDRBRG4?
For technical support, including OPA727AIDRBRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA727AIDRBRG4 requirements.
6.How does Aetrix verify that OPA727AIDRBRG4 is sourced from the original manufacturer or authorized distributors?
All OPA727AIDRBRG4 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 OPA727AIDRBRG4 meets industry standards.
7.What is the process for return or replacement of OPA727AIDRBRG4?
All OPA727AIDRBRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA727AIDRBRG4, 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 OPA727AIDRBRG4 part is unused and in its original packaging.
Return procedure for OPA727AIDRBRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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