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Texas Instruments OPA392DBVT
- Part No.:
- OPA392DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA392DBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:276
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Product details
Overview
OPA392DBVT from Texas Instruments is a single-channel, rail-to-rail input/output precision operational amplifier featuring ±10 µV maximum offset voltage, ±0.18 µV/°C drift, 10 fA input bias current, 4.4 nV/√Hz noise at 10 kHz, and 13 MHz gain-bandwidth product - optimized for high-accuracy sensor signal conditioning and ADC driving in low-voltage (1.7–5.5 V) medical and industrial systems.
For engineers reviewing the OPA392DBVT datasheet, OPA392DBVT pinout, OPA392DBVT application, or OPA392DBVT equivalent, key selection criteria include ultra-low input bias current for photodiode transimpedance stages, fast 0.75 µs settling to 0.1%, e-trim™ DC accuracy without chopping artifacts, and SOT-23-5 packaging for space-constrained analog front-ends.
Technical Context
The OPA392DBVT employs TI's proprietary e-trim™ technology to achieve factory-trimmed offset and drift without auto-zero or chopper modulation - preserving ultra-low 10 fA input bias current and eliminating switching-induced noise or intermodulation distortion. Its CMOS input stage supports rail-to-rail common-mode range and delivers 4.5 V/µs slew rate with unity-gain stability.
Designed for precision analog signal chains, it drives SAR and delta-sigma ADCs with minimal code-dependent offset error, buffers high-resolution DAC outputs with <5 mV output swing headroom, and maintains >115 dB open-loop gain across 1.7–5.5 V supply and –40°C to +125°C temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset voltage | ±10 µV max - ensures <0.002% full-scale error in 5 V-span 16-bit systems without calibration |
| Offset drift | ±0.18 µV/°C - contributes <2.25 µV error over 125°C industrial range, enabling stable DC measurements |
| Input bias current | 10 fA typical - enables picoampere-level photodiode current measurement with <1 mV error on 1 GΩ feedback |
| Gain bandwidth | 13 MHz - supports stable closed-loop operation up to 10× gain with >1 MHz small-signal bandwidth |
| Supply range | 1.7 V to 5.5 V - operates from single-cell Li-ion (3.0 V) or 3.3 V/5 V rails without level-shifting |
| Settling time | 0.75 µs to 0.1% - meets timing budget for 1 MSPS ADC sampling with 1 V step |
| Output drive | +65 mA / –55 mA short-circuit - directly drives 10 kΩ loads with <10 mV droop at full swing |
Pinout & Package
OPA392DBVT is packaged in a 5-pin SOT-23 (DBV) surface-mount package with exposed pad not connected internally. The package measures 2.9 mm × 1.6 mm × 1.15 mm and is RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing 65 mA or sinking 55 mA into load |
| 2 - V– | Negative supply | Reference for lowest supply rail; connects to ground in single-supply configurations |
| 3 - +IN | Noninverting input | High-impedance node (10¹³ Ω || 2.8 pF); accepts signals from V– to V+ rail |
| 4 - –IN | Inverting input | Differential input node; matched to +IN for optimal CMRR and PSRR performance |
| 5 - V+ | Positive supply | Reference for highest supply rail; supports operation down to 1.7 V total supply |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ architecture | Factory-trimmed offset and drift without chopping - preserves DC accuracy and eliminates 100 kHz switching artifacts in sensitive analog paths |
| Rail-to-rail I/O | Input common-mode extends to both rails; output swings within 20 mV of V– and V+ at 2 kΩ load - enables true single-supply operation with zero-input reference |
| Low 1/f noise | 2 µVPP (0.1 Hz–10 Hz) - critical for DC-coupled ECG, pH, and gas sensor front-ends where low-frequency drift dominates error budget |
| EMI/RFI filtered inputs | Integrated RF rejection circuitry suppresses >60 dB interference at 900 MHz - improves immunity in noisy industrial or wireless environments |
| Fast overload recovery | 450 ns recovery from saturation - prevents data loss during transient overloads in multiplexed DAQ systems |
Applications
| Electrocardiogram (ECG) | Optical Power Monitor |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from Ag/AgCl electrodes with high common-mode rejection in portable patient monitors. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier gain block with ultra-low input bias current to prevent electrode polarization and offset drift. Use Value: 10 fA bias current minimizes electrode interface error; ±10 µV offset ensures <0.02% baseline stability over temperature in 5 V full-scale designs. | Use Scenario: Converting photodiode current to voltage in fiber-optic transceivers and optical module power control loops. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with rail-to-rail input enabling direct connection to photodiode cathode/anode without biasing resistors. Use Value: 4.4 nV/√Hz noise density and 13 MHz GBW support >10 Mbps data rates with <0.5% SNR degradation in 10 Gbps modules. |
| Precision Current Shunt Monitor | Analog Input Module |
Use Scenario: Bidirectional current sensing across low-value shunts (e.g., 10 mΩ) in motor drives and battery management systems. IC Role / Device Role / Timing Role: Difference amplifier with matched internal resistor ratios for high CMRR and low gain error in 3.3 V single-supply configurations. Use Value: 0.75 µs settling to 0.1% enables accurate sampling at 1 MSPS; rail-to-rail output delivers full 0–3.3 V range to ADC without external level shift. | Use Scenario: Signal conditioning for 4–20 mA industrial loop receivers and thermocouple amplifiers in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Precision buffer and level-shifter between isolated field-side sensors and 24-bit sigma-delta ADCs. Use Value: ±0.18 µV/°C drift ensures <1 LSB error over –40°C to +85°C in 24-bit systems; 1.22 mA quiescent current supports low-power remote I/O designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Chopper-stabilized architecture; 0.1 µV/°C drift; 50 pA input bias current; 350 kHz GBW | Better DC drift but higher 1/f noise (0.5 µVPP) and lower bandwidth limits use in dynamic sensor interfaces | Select when ultra-low drift dominates over speed and noise - not suitable for >100 kHz signal chains |
| LTC6268IS6#TRMPBF | Femtoampere input bias (3 fA); 500 MHz GBW; 4.3 nV/√Hz noise; requires ≥3.1 V supply | Superior speed and noise but lacks rail-to-rail input and has higher quiescent current (1.9 mA) | Prefer for high-frequency photodiode TIA; avoid where 1.7 V operation or rail-to-rail input is required |
Compared with OPA333AIDBVR and LTC6268IS6#TRMPBF, OPA392DBVT uniquely balances ultra-low input bias current, rail-to-rail operation down to 1.7 V, 13 MHz bandwidth, and e-trim™ DC precision - making it optimal for space-constrained, low-voltage, high-accuracy analog front-ends where chopper noise or supply limitations disqualify alternatives.
Availability
OPA392DBVT is available at Aetrix Electronics and suitable for electrocardiogram (ECG) systems, optical power monitoring, precision current shunt sensing, and analog input modules requiring stable component supply across automotive, industrial, and medical production programs.
Supply support for OPA392DBVT 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 and embedded processing solutions, with over 50 years of innovation in precision analog ICs and broad portfolio coverage from signal chain to power management.
The OPAx392 product line was designed specifically for high-fidelity, low-power analog signal conditioning in medical instrumentation, optical modules, and industrial process analytics - emphasizing e-trim™ DC accuracy, femtoampere input bias, and rail-to-rail operation in miniature packages.
FAQ
What is the maximum operating temperature range for the OPA392DBVT?
The OPA392DBVT is specified for continuous operation from –40°C to +125°C ambient temperature. This extended industrial temperature range is validated per JEDEC JESD22-A108 and supported by thermal metrics including RθJA = 187.1°C/W for the DBV package. All electrical characteristics - including ±10 µV offset voltage and 10 fA input bias current - are guaranteed across this full range, making OPA392DBVT suitable for under-hood automotive and harsh-environment industrial deployments.
Does the OPA392DBVT have an enable (EN) pin?
No, the OPA392DBVT does not include an enable pin. The DBV (SOT-23-5) variant is a fixed-function, always-on operational amplifier. Enable functionality is only available on the YBJ (DSBGA-6) package variant of OPA392, which adds an EN terminal at pin B2. Engineers selecting OPA392DBVT must manage power via system-level supply sequencing or external FET control, as the device draws 1.22 mA quiescent current continuously when powered.
Can the OPA392DBVT drive a 10 kΩ load rail-to-rail?
Yes, the OPA392DBVT delivers rail-to-rail output swing into a 10 kΩ load. At VS = 5.5 V, the output swings within 20 mV of both V+ and V– rails under typical conditions. With a 2 kΩ load, swing degrades to 35 mV from each rail. This performance is enabled by its Class AB output stage and is guaranteed across –40°C to +125°C. For OPA392DBVT, no external pull-up/down resistors are needed to achieve full-scale output in 12-bit to 16-bit ADC interfacing applications.
How does the e-trim™ technology in OPA392DBVT differ from chopper stabilization?
OPA392DBVT uses TI's e-trim™ laser-trimming process to permanently adjust internal offset without modulating the input signal - unlike chopper amplifiers that periodically switch inputs and introduce foldback noise, clock feedthrough, and intermodulation distortion. As a result, OPA392DBVT achieves ±10 µV offset and ±0.18 µV/°C drift while maintaining 10 fA input bias current and broadband noise performance (4.4 nV/√Hz), making it suitable for precision DC and AC-coupled applications where chopper artifacts would corrupt signal integrity.
Is the OPA392DBVT unity-gain stable?
Yes, the OPA392DBVT is unity-gain stable and characterized for closed-loop gains ≥1 V/V. Its phase margin exceeds 45° with 100 pF capacitive load, and it exhibits no phase reversal under overdrive conditions. This stability is confirmed across supply voltages (1.7–5.5 V) and temperatures (–40°C to +125°C). The device's 13 MHz gain-bandwidth product allows stable operation at gains up to 10× with >1 MHz bandwidth, supporting high-speed precision filtering and active anti-aliasing in data acquisition systems.
OPA392DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4.8V/µs
- Gain Bandwidth Product:
- 13 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.01 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 1.22mA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA392DBVT FAQ
1.How can I place an order for OPA392DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA392DBVT 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 OPA392DBVT reliable?
The price and inventory of OPA392DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA392DBVT is usually 5 days.
3.What payment methods are accepted for OPA392DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA392DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA392DBVT?
OPA392DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA392DBVT 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 OPA392DBVT?
For technical support, including OPA392DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA392DBVT requirements.
6.How does Aetrix verify that OPA392DBVT is sourced from the original manufacturer or authorized distributors?
All OPA392DBVT 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 OPA392DBVT meets industry standards.
7.What is the process for return or replacement of OPA392DBVT?
All OPA392DBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA392DBVT, 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 OPA392DBVT part is unused and in its original packaging.
Return procedure for OPA392DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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