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Texas Instruments OPA2392DGKR
- Part No.:
- OPA2392DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2392DGKR.pdf
- Description:
- Dual, low-offset 10UV, low-noi
- Quantity:
- Payment:
- Shipping:
Inventory:2,193
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Product details
Overview
OPA2392DGKR from Texas Instruments is a dual-channel, rail-to-rail input/output precision operational amplifier featuring e-trim™ technology. It delivers ±10 µV max input 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 - optimized for high-accuracy signal conditioning in low-voltage (1.7–5.5 V) sensor front-ends and ADC driver stages.
For engineers reviewing the OPA2392DGKR datasheet, OPA2392DGKR pinout, OPA2392DGKR application, or OPA2392DGKR equivalent, this page provides verified package mapping (VSSOP-8), confirmed dual-amplifier circuit role, real-world settling time (0.75 µs to 0.1%), output drive capability (+65 mA/–55 mA), and validated alternatives for medical, optical, and process analytics designs.
Technical Context
The OPA2392DGKR implements TI's e-trim™ architecture to achieve ultra-low offset and drift without chopping or auto-zero artifacts - preserving DC accuracy while enabling true 10 fA input bias current for photodiode transimpedance and high-impedance sensor interfaces. Its CMOS input stage supports rail-to-rail common-mode range down to V– and up to V+, with full rail-to-rail output swing within 20 mV of both rails under 2 kΩ load.
Designed for unity-gain stability and low-noise performance, the device maintains 13 MHz GBW and 4.5 V/µs slew rate across 1.7–5.5 V supply, with EMI/RFI-filtered inputs and robust 2 kV HBM ESD rating. Thermal resistance in DGK package is RθJA = 165 °C/W, supporting operation from –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±10 µV max - enables sub-16-bit error floor in 24-bit DAQ systems without calibration |
| Offset Drift | ±0.18 µV/°C - ensures <1 µV total drift over industrial temperature range (–40°C to +125°C) |
| Input Bias Current | 10 fA typical - preserves signal integrity in picoamp-level photodiode and pH electrode interfaces |
| Input Voltage Noise | 4.4 nV/√Hz @ 10 kHz - supports clean amplification of fast-slewing sensor signals without added broadband noise |
| Gain Bandwidth | 13 MHz - allows stable closed-loop gain ≥10 at 1 MHz for anti-aliasing filter buffering |
| Supply Range | 1.7 V to 5.5 V single supply - compatible with Li-ion, 3.3 V, and 5 V systems without level-shifting |
| Output Drive | +65 mA / –55 mA short-circuit - drives 2 kΩ loads to rail with <35 mV headroom at 5.5 V |
| Settling Time | 0.75 µs to 0.1% - meets timing budgets for 1 MSPS SAR ADC drivers with minimal acquisition delay |
Pinout & Package
OPA2392DGKR is housed in an 8-pin VSSOP (DGK) package - 2.3 mm × 2.0 mm, 0.65 mm pitch, exposed thermal pad connected to V–. This thermally enhanced, space-efficient package supports high-density PCB layouts in portable instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT A | Output, Channel A | Low-impedance rail-to-rail output capable of sourcing 65 mA or sinking 55 mA |
| 2 - –IN A | Inverting Input, Channel A | High-impedance CMOS node with 10 fA bias current; accepts common-mode voltages from V– to V+ |
| 3 - +IN A | Noninverting Input, Channel A | Same high-Z, rail-to-rail CM input as –IN A; differential pair input for precision gain setting |
| 4 - V– | Negative Supply | Reference for both amplifiers; thermal pad must be soldered to PCB ground plane for thermal management |
| 5 - +IN B | Noninverting Input, Channel B | Independent input for second amplifier; identical specs and layout rules as Channel A |
| 6 - –IN B | Inverting Input, Channel B | Matches Channel A performance; enables dual-channel signal paths without cross-talk degradation |
| 7 - OUT B | Output, Channel B | Fully independent output; no internal enable/disable - always active when powered |
| 8 - V+ | Positive Supply | Single or dual supply rail; supports 1.7–5.5 V operation with PSRR >75 dB up to 100 Hz |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ offset calibration | Eliminates need for external trimming or system calibration - ±10 µV max offset guaranteed over life and temperature |
| Rail-to-rail I/O | Enables full dynamic range utilization in 1.7 V single-supply systems, such as battery-powered gas sensors |
| EMI/RFI filtered inputs | Reduces susceptibility to 900 MHz–2.4 GHz RF interference in analog security cameras and industrial wireless nodes |
| Ultra-low 1/f noise | 2 µVPP (0.1–10 Hz) - critical for DC-stable measurements in pH meters and strain gauge bridges |
| Fast overload recovery | 0.45 µs recovery from saturation - prevents data loss during transient overloads in pulse oximeter front-ends |
| High open-loop gain | 132 dB typical - ensures <0.001% gain error in precision current shunt monitors with 100× gain |
Applications
| Electrocardiogram (ECG) Front-End | Optical Power Monitor |
|---|---|
Use Scenario: Amplifying microvolt-level cardiac signals from dry electrodes in portable ECG patches. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier core - one channel for lead-I differential sensing, second for right-leg drive (RLD) feedback. Use Value: 10 fA input bias current prevents electrode polarization; ±10 µV offset avoids baseline wander; rail-to-rail output maximizes ADC utilization in 3.3 V systems. | Use Scenario: Converting photodiode current to voltage in SFP+ optical transceivers for real-time laser power control. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with 13 MHz bandwidth driving a 12-bit ADC sampling at 1 MSPS. Use Value: 4.4 nV/√Hz noise density and 0.75 µs settling ensure accurate, low-jitter power measurement across temperature and aging. |
| Precision Current Shunt Monitor | Process Analytics (pH/Gas) |
Use Scenario: Bidirectional current sensing in 4–20 mA loop-powered field transmitters for valve position feedback. IC Role / Device Role / Timing Role: Difference amplifier with integrated reference buffer - configured per TI TIDA-010042 design. Use Value: ±0.18 µV/°C drift guarantees <0.05% full-scale error over –40°C to +85°C ambient; 1.22 mA quiescent current extends loop power budget. | Use Scenario: Signal conditioning for electrochemical pH electrodes and catalytic gas sensors in industrial analyzers. IC Role / Device Role / Timing Role: High-input-impedance buffer and gain stage preceding 24-bit ΣΔ ADC in multi-parameter analyzers. Use Value: Rail-to-rail input accepts 0–14 pH output (0–1.4 V); 2 µVPP 0.1–10 Hz noise prevents drift-induced calibration drift in lab-grade instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189DR | Lower offset (±1 µV typ), higher IQ (1.3 mA), same VSSOP-8 package, but no e-trim - uses auto-zero | Auto-zero architecture introduces 100 nVPP switching artifacts; unsuitable for low-EMI optical modules | Select OPA2189DR only if ultra-low offset dominates over noise purity and EMI immunity |
| LTC6268IMS8#PBF | Higher bandwidth (500 MHz), lower input capacitance (0.45 pF), but higher offset (±100 µV) and noise (4.3 nV/√Hz) | Optimized for high-speed photodiode amps; lacks rail-to-rail output and low-drift stability for DC-coupled pH sensors | Choose LTC6268IMS8#PBF when speed >100 MHz is required, not for precision DC applications |
Compared with OPA2392DGKR, OPA2189DR trades noise-free operation for tighter offset, while LTC6268IMS8#PBF sacrifices DC accuracy and rail-to-rail output for GHz-range bandwidth - making OPA2392DGKR the optimal balance for medical, analytical, and optical DC-to-1 MHz signal chains.
Availability
OPA2392DGKR is available at Aetrix Electronics and suitable for electrocardiogram (ECG) monitors, optical power monitoring modules, and precision current shunt measurement systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2392DGKR 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 over 50 years of innovation in precision signal chain components.
The OPAx392 product line was engineered for ultra-precision, low-power, rail-to-rail op amp applications in medical diagnostics, optical sensing, and industrial process analytics - emphasizing e-trim™ stability, femtoamp input bias, and 1.7 V operation.
FAQ
What is the maximum operating temperature range for the OPA2392DGKR?
The OPA2392DGKR is specified for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated per TI's production test conditions and supports deployment in automotive engine compartments, industrial process controllers, and outdoor environmental sensors without derating.
Does the OPA2392DGKR include an enable (EN) pin?
No, the OPA2392DGKR in the DGK (VSSOP-8) package does not feature an enable pin. Enable functionality is only present on YBJ (DSBGA-9) and RTE (WQFN-16) variants. The OPA2392DGKR remains fully operational whenever valid supply voltage (1.7–5.5 V) is applied to V+ and V– pins.
Can the OPA2392DGKR drive a 10 kΩ load rail-to-rail?
Yes - the OPA2392DGKR delivers rail-to-rail output swing within 20 mV of both supply rails when driving a 10 kΩ load at 25°C. At 5.5 V supply, output voltage range is V– +20 mV to V+ –20 mV; performance is maintained across –40°C to +125°C with minor degradation (<5 mV increase in headroom).
What is the input common-mode voltage range of the OPA2392DGKR?
The OPA2392DGKR supports a true rail-to-rail input common-mode range: from V– to V+. This allows direct interfacing with sensors whose output spans the full supply, such as resistive bridge outputs or pH electrode potentials, without external level-shifting circuitry.
Is the OPA2392DGKR unity-gain stable?
Yes, the OPA2392DGKR is unity-gain stable and characterized for stable operation with closed-loop gains ≥1. Its phase margin exceeds 35° with 100 pF capacitive load, and it exhibits no phase reversal under overdrive - making it suitable for precision integrators, active filters, and DAC output buffers without external compensation.
OPA2392DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- OPAx392
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Standard
- Number of Circuits:
- 2
- Output Type:
- Push-Pull, Rail-to-Rail
- Slew Rate:
- 4.5V/µs
- Gain Bandwidth Product:
- 13 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.01 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 1.22mA (x2 Channels)
- 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:
- 8-VSSOP
OPA2392DGKR FAQ
1.How can I place an order for OPA2392DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2392DGKR 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 OPA2392DGKR reliable?
The price and inventory of OPA2392DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2392DGKR is usually 5 days.
3.What payment methods are accepted for OPA2392DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2392DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2392DGKR?
OPA2392DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2392DGKR 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 OPA2392DGKR?
For technical support, including OPA2392DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2392DGKR requirements.
6.How does Aetrix verify that OPA2392DGKR is sourced from the original manufacturer or authorized distributors?
All OPA2392DGKR 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 OPA2392DGKR meets industry standards.
7.What is the process for return or replacement of OPA2392DGKR?
All OPA2392DGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2392DGKR, 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 OPA2392DGKR part is unused and in its original packaging.
Return procedure for OPA2392DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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