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Texas Instruments OPA727AIDRBT
- Part No.:
- OPA727AIDRBT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
OPA727AIDRBT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:485
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Product details
Overview
OPA727AIDRBT 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 4.3mA quiescent current per channel - optimized for transimpedance amplifiers, precision active filters, and high-resolution ADC drivers in optical networking and test equipment.
For engineers reviewing the OPA727AIDRBT datasheet, OPA727AIDRBT pinout, OPA727AIDRBT application, or OPA727AIDRBT equivalent, key selection criteria include its rail-to-rail output swing (150mV from rails), ultra-low input bias current (500pA max), low 6nV/√Hz noise at 100kHz, and operation across 4V–12V supplies with –40°C to +85°C temperature rating.
Technical Context
The OPA727AIDRBT uses Texas Instruments' e-trim™ technology - digital trimming performed post-packaging to eliminate stress-induced parameter shifts - enabling stable 15µV typical offset and 0.3µV/°C typical drift. Its CMOS input stage achieves 500pA max input bias current and 10¹¹ Ω||5pF differential input impedance.
It features a Class AB rail-to-rail output stage delivering 40mA output current and 150mV rail swing into 100kΩ loads while maintaining >110dB open-loop gain. The device is unity-gain stable and supports single-supply operation down to 4V with input common-mode range extending to V–.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-Bandwidth Product | 20MHz - enables stable unity-gain operation and supports high-frequency signal conditioning up to ~10MHz closed-loop bandwidth. |
| Input Offset Voltage (max) | 150µV - ensures ≤0.003% error in 1V full-scale precision measurement systems without external trimming. |
| Offset Drift (max) | 1.5µV/°C - guarantees <0.15mV total offset shift over 100°C industrial temperature range. |
| Slew Rate | 30V/µs - supports clean 10Vpp, 1MHz sine wave output with <1% distortion in driving 100pF capacitive loads. |
| Input Bias Current (max) | 500pA - critical for low-leakage photodiode transimpedance applications where input current errors must be sub-picoampere. |
| Supply Voltage Range | 4V to 12V - allows direct compatibility with 5V and 12V industrial rails, eliminating need for LDO regulation in many embedded systems. |
| Quiescent Current | 4.3mA/ch - balances precision performance with power efficiency in battery-backed instrumentation and portable test gear. |
| Output Swing (from rail) | 150mV - provides ≥9.7V dynamic range on 12V supply, maximizing SNR in single-supply data acquisition front-ends. |
Pinout & Package
OPA727AIDRBT 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 electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No internal connection | Must remain unconnected; no routing or grounding required. |
| 2 (V+) | Positive supply rail | Accepts 4V–12V single supply or +2V–+6V of dual supply; requires local 1nF + 1µF bypassing. |
| 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 remain unconnected; no routing or grounding required. |
| 5 (NC) | No internal connection | Must remain unconnected; no routing or grounding required. |
| 6 (–IN) | Inverting input | High-impedance CMOS node; accepts input common-mode voltage from V– to (V+)–2.5V. |
| 7 (+IN) | Non-inverting input | High-impedance CMOS node; matched to –IN for optimal CMRR (>94dB) and offset rejection. |
| 8 (V–) | Negative supply rail / ground reference | Connects to system ground in single-supply mode; thermal die pad must be soldered to V– plane. |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ post-package digital trimming | Eliminates packaging-induced offset drift, ensuring 150µV max offset and 1.5µV/°C max drift over life and temperature. |
| Rail-to-rail output stage | Delivers 150mV min swing from rails into 100kΩ, preserving >98% of supply voltage headroom for maximum dynamic range. |
| Ultra-low input bias current | 500pA max enables accurate I/V conversion for photodiodes with capacitance <10pF and leakage <1pA. |
| Low 1/f and broadband noise | 6nV/√Hz at 100kHz and 10µVPP (0.1–10Hz) support high-SNR measurements in precision weigh scales and sensor interfaces. |
| Unity-gain stable architecture | Operates robustly with gain = +1 without external compensation, simplifying design of buffers and active filters. |
| Extended industrial temperature range | Specified from –40°C to +85°C (per ordering info), supporting deployment in factory automation and outdoor instrumentation. |
Applications
| Optical Power Monitoring | High-Resolution ADC Driver |
|---|---|
Use Scenario: Monitoring received optical power in ONET-compliant SFP modules using a PIN photodiode. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current to voltage with minimal added noise and offset. Use Value: 500pA max input bias current prevents signal loss; 6nV/√Hz noise preserves SNR; 20MHz GBW supports >5MHz modulation bandwidth. | Use Scenario: Driving the analog input of a 16-bit SAR ADC (e.g., ADS8342) in automated test equipment. IC Role / Device Role / Timing Role: Precision buffer and gain stage isolating ADC input capacitance and charge injection. Use Value: 350ns 0.1% settling time meets 600ns acquisition window; rail-to-rail output maximizes ADC utilization. |
| Active Filter for Sensor Signal Conditioning | Process Control Loop Amplifier |
Use Scenario: Implementing a 4-pole Butterworth low-pass filter (50kHz cutoff) for strain gauge bridge outputs. IC Role / Device Role / Timing Role: High-GBW, low-distortion op amp in Sallen-Key topology with precise pole placement. Use Value: 0.0003% THD+N at 1kHz ensures <1 LSB harmonic error in 16-bit systems; 20MHz GBW enables sharp filter roll-off. | Use Scenario: Closed-loop current/voltage output stage in 4–20mA transmitter modules for pressure/temperature sensors. IC Role / Device Role / Timing Role: Precision output amplifier with low drift and high PSRR rejecting supply ripple in loop-powered designs. Use Value: 1.5µV/°C max drift limits zero-point error to <0.15mV over 100°C ambient; 150dB PSRR suppresses 12V rail noise. |
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, MSOP-8 package (DGK); 300µV max offset (MSOP variant), higher θJA (150°C/W vs 46°C/W). | Preferred for space-constrained PCBs where thermal vias are impractical; less suitable for high-power-density layouts. | Select when board area is critical and thermal load <150mW; verify layout clearance for MSOP body size. |
| OPA2727AIDRBR | Dual-channel version in same DFN-8 (DRB) package; identical per-channel specs except 175µV max offset for quad variant (OPA4727). | Used where two matched precision amps are needed - e.g., differential driver + reference buffer - reducing component count. | Choose when dual functionality justifies shared footprint; confirm channel separation (>100dB) meets crosstalk requirements. |
Compared with OPA727AIDRBT, the MSOP-8 OPA727AIDGKR trades thermal performance for smaller footprint, while the dual OPA2727AIDRBR offers channel matching and density at identical DFN-8 thermal advantages - both retain the same e-trim precision, 20MHz GBW, and 4.3mA quiescent current per amplifier.
Availability
OPA727AIDRBT is available at Aetrix Electronics and suitable for optical transceiver modules, high-speed data acquisition systems, and industrial process controllers requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for OPA727AIDRBT 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 OPA727 series belongs to TI's e-trim™ precision op amp product line, engineered specifically for applications demanding ultra-low offset, minimal drift, and high-speed accuracy - including optical sensing, metrology, and high-fidelity data conversion.
FAQ
What is the maximum operating temperature range for the OPA727AIDRBT?
The OPA727AIDRBT is specified over –40°C to +85°C, as confirmed in TI's official packaging information addendum. While the underlying OPA727 family supports –40°C to +125°C in other packages, the DRB-packaged OPA727AIDRBT variant is rated to +85°C per its orderable part documentation and thermal resistance (θJA = 46°C/W) validation.
Does the OPA727AIDRBT have shutdown capability?
No, the OPA727AIDRBT does not include shutdown functionality. Shutdown is exclusive to the OPA728 family (e.g., OPA728AIDRBT). The OPA727AIDRBT draws 4.3mA per channel continuously and lacks ENABLE/REF pins - its pinout contains three NC terminals and no control inputs.
Can the OPA727AIDRBT drive capacitive loads, and what is the recommended compensation?
Yes, the OPA727AIDRBT can drive capacitive loads up to 20pF in unity-gain configuration. For stability with >10pF loads, TI recommends adding a 10Ω–20Ω series resistor inside the feedback loop (between output and inverting input), as shown in Figure 30 of SBOS314H. This preserves DC accuracy while suppressing ringing.
What is the purpose of the exposed thermal pad on the OPA727AIDRBT DFN package?
The exposed thermal pad on the OPA727AIDRBT must be soldered to the PCB's V– (ground) plane. It serves dual roles: lowering thermal resistance (θJA = 46°C/W) to prevent junction overheating, and enhancing mechanical reliability during thermal cycling and board flex. Leaving it unconnected degrades both thermal performance and long-term solder joint integrity.
How does the e-trim™ technology in the OPA727AIDRBT improve long-term stability compared to laser-trimmed op amps?
e-trim™ performs digital offset and drift calibration after plastic packaging - eliminating parametric shifts caused by mold stress. Unlike laser trimming (done pre-packaging), e-trim™ ensures the final trimmed values remain stable over time and temperature, delivering 150µV max offset and 1.5µV/°C max drift across the full –40°C to +85°C range for the OPA727AIDRBT.
OPA727AIDRBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- 8-VDFN Exposed Pad
- 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-SON (3x3)
OPA727AIDRBT FAQ
1.How can I place an order for OPA727AIDRBT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA727AIDRBT 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 OPA727AIDRBT reliable?
The price and inventory of OPA727AIDRBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA727AIDRBT is usually 5 days.
3.What payment methods are accepted for OPA727AIDRBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA727AIDRBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA727AIDRBT?
OPA727AIDRBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA727AIDRBT 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 OPA727AIDRBT?
For technical support, including OPA727AIDRBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA727AIDRBT requirements.
6.How does Aetrix verify that OPA727AIDRBT is sourced from the original manufacturer or authorized distributors?
All OPA727AIDRBT 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 OPA727AIDRBT meets industry standards.
7.What is the process for return or replacement of OPA727AIDRBT?
All OPA727AIDRBT units undergo pre-shipment inspection (PSI). If there is an issue with OPA727AIDRBT, 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 OPA727AIDRBT part is unused and in its original packaging.
Return procedure for OPA727AIDRBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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