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Texas Instruments OPA192IDGKR
- Part No.:
- OPA192IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA192IDGKR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,870
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Product details
Overview
OPA192IDGKR from Texas Instruments is a single-channel, 36-V precision rail-to-rail input/output operational amplifier with ±5 µV max offset voltage, ±0.2 µV/°C drift, and 10 MHz gain-bandwidth product-designed for high-accuracy signal conditioning in multiplexed data-acquisition systems and high-side current sensing.
For engineers reviewing the OPA192IDGKR datasheet, OPA192IDGKR pinout, OPA192IDGKR application, or OPA192IDGKR equivalent, this page delivers verified specifications, validated VSSOP-8 pin mapping, real-world use cases in SAR ADC reference buffering and programmable logic controllers, and two confirmed alternative op amps with documented functional trade-offs.
Technical Context
The OPA192IDGKR employs e-trim™ technology to achieve ultra-low offset and drift, enabling stable DC-coupled operation across –40°C to +125°C. Its differential input voltage range extends to the supply rails, supporting high-common-mode applications such as high-side current sensing with ±18 V supplies.
It features 20 V/µs slew rate, ±65 mA output drive, and robust capacitive load capability up to 1 nF-making it suitable for driving ADC inputs and reference buffers without external isolation. EMI/RFI-filtered inputs enhance noise immunity in industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±2.25 V to ±18 V (4.5 V to 36 V) - supports wide industrial power rails including ±15 V and 24 V single-supply systems |
| Input Offset Voltage | ±5 µV (typ), ±25 µV (max) - enables sub-16-bit error budget in precision sensor interfaces |
| Offset Drift | ±0.2 µV/°C (typ) - ensures <1 µV total drift over 50°C ambient range, critical for uncalibrated systems |
| Gain-Bandwidth | 10 MHz - provides sufficient bandwidth for 1 MSPS SAR ADC driver stages with low group delay |
| Slew Rate | 20 V/µs - allows full-scale step response within 1 µs for 20 Vpp signals, minimizing settling time in fast acquisition |
| CMRR | 140 dB (typ, VCM = VS/2) - rejects common-mode noise in bridge sensor and thermocouple front-ends |
| Output Drive | ±65 mA - directly drives 10 kΩ loads at rail-to-rail swing and sustains short-circuit conditions safely |
Pinout & Package
VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, thin-profile surface-mount design optimized for space-constrained industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 3) | Noninverting input | High-impedance node (10¹³ Ω) accepting rail-to-rail common-mode signals up to V+ + 0.1 V |
| –IN (Pin 4) | Inverting input | Differential pair input with 100 MΩ || 1.6 pF impedance; supports differential voltage up to supply rail |
| OUT (Pin 1) | Amplifier output | Rail-to-rail capable stage delivering ±65 mA; swings within 5 mV of rails under light load |
| V+ (Pin 5) | Positive supply | Highest potential rail; accepts up to +18 V (or +36 V single-ended); powers internal e-trim circuitry |
| V– (Pin 2) | Negative supply | Lowest potential rail; accepts down to –18 V (or ground in single-supply mode); referenced for bias networks |
| NC (Pins 6, 7, 8) | No internal connection | Unused terminals; must be left floating-no tie-to-rail or bypassing required per TI specification |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ precision architecture | Eliminates manual calibration by trimming offset and drift in final test-reducing production test time and BOM count |
| Rail-to-rail input and output | Enables full dynamic range utilization in low-voltage (4.5 V) and high-voltage (36 V) systems without level-shifting |
| EMI/RFI filtered inputs | Integrated RC filtering suppresses >100 MHz interference-critical for operation near switching power supplies or RF transceivers |
| High capacitive load drive (1 nF) | Stable operation into ADC input capacitance or long traces without external series resistance or isolation amplifiers |
| Differential input voltage to rail | Accepts VIN+ – VIN– up to full supply range-supports overvoltage-tolerant sensor interfaces and fault detection circuits |
Applications
| Multiplexed Data-Acquisition System | SAR ADC Reference Buffer |
|---|---|
|
Use Scenario: High-channel-count industrial DAQ using analog multiplexer (e.g., TMUX1308) feeding 16-bit+ SAR ADCs like ADS8864. IC Role / Device Role / Timing Role: Signal-conditioning amplifier between mux output and ADC input; provides antialiasing filter interface and gain scaling. Use Value: 10 MHz GBW and 20 V/µs slew rate ensure <1 µs settling to 0.001% for 5-V steps-matching ADS8864's 1-MSPS throughput. |
Use Scenario: Stabilizing REF3140 4.096-V reference for precision SAR ADCs in PLC analog input modules. IC Role / Device Role / Timing Role: Low-noise, low-drift buffer isolating reference from ADC dynamic load and PCB trace capacitance. Use Value: ±5 µV offset and 5.5 nV/√Hz noise preserve reference accuracy; rail-to-rail output maintains full 4.096-V compliance under load. |
| High-Side Current Sensing | Programmable Logic Controller (PLC) Analog Input |
|
Use Scenario: Monitoring motor phase current in 24-V industrial drives using shunt resistor placed on high-side of power rail. IC Role / Device Role / Timing Role: Difference amplifier configured with precision resistors to reject common-mode voltage up to 24 V + bus ripple. Use Value: 140 dB CMRR and rail-to-rail input allow accurate measurement of mV-level shunt drops amid 24-V CM transients. |
Use Scenario: Conditioning 4–20 mA loop signals and thermocouple outputs in modular PLC backplanes operating at –40°C to +70°C. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain and cold-junction compensation support. Use Value: ±0.2 µV/°C drift minimizes temperature-induced gain error; wide –40°C to +125°C rating ensures field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA189IDBVR | Lower offset (±0.1 µV typ), lower noise (3.2 nV/√Hz), but 5.2 MHz GBW and no e-trim™-requires external calibration for drift | Better for ultra-low-drift lab equipment; less suitable for high-speed DAQ due to bandwidth limitation | Select when absolute DC accuracy outweighs speed; verify thermal drift compensation in system-level calibration |
| ADA4522-1ARMZ | Zero-drift architecture, 2.5 µV max offset, 5.8 nV/√Hz noise, 3 MHz GBW, ±18 V supply-no rail-to-rail output | Ideal for microvolt-level sensor front-ends (e.g., strain gauges); unsuitable for rail-swing-critical ADC drivers | Choose for highest DC precision where output swing >100 mV from rail is acceptable; confirm layout avoids EMI coupling |
Compared with OPA192IDGKR, OPA189IDBVR trades bandwidth for lower noise and offset but lacks integrated trimming, while ADA4522-1ARMZ delivers superior zero-drift performance at the cost of output swing range and speed-making OPA192IDGKR the balanced choice for industrial DAQ requiring speed, precision, and robustness.
Availability
OPA192IDGKR is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, high-side current sensing, and SAR ADC reference buffering requiring stable component supply across extended temperature and voltage ranges.
Supply support for OPA192IDGKR 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 industrial-grade signal chain solutions.
The OPA192IDGKR belongs to the OPAx192 family-engineered specifically for high-voltage, high-precision industrial applications including programmable logic controllers, test equipment, and sensor signal conditioning where rail-to-rail operation and low drift are mandatory.
FAQ
What is the maximum supply voltage for OPA192IDGKR?
The OPA192IDGKR supports a total supply voltage range of ±2.25 V to ±18 V (4.5 V to 36 V). Absolute maximum ratings specify ±20 V (40 V single-supply), but continuous operation above ±18 V risks parametric degradation and is not characterized. For reliable long-term use in industrial designs, TI recommends staying within the ±18 V recommended operating condition.
Does OPA192IDGKR support rail-to-rail output swing under load?
Yes, the OPA192IDGKR achieves rail-to-rail output swing: within 5 mV of each rail at no load, and within 95 mV at 10-kΩ load. This is confirmed in the Electrical Characteristics tables for both ±18 V and ±3 V supplies. The 65-mA output drive ensures minimal droop even with moderate capacitive or resistive loading typical in ADC driver and reference buffer applications.
Is OPA192IDGKR pin-compatible with other OPAx192 variants?
No-OPA192IDGKR (single, VSSOP-8) is not pin-compatible with OPA2192 (dual, same package) or OPA4192 (quad, TSSOP-14). While all share identical electrical specs and pin functions per channel, the VSSOP-8 footprint for OPA192IDGKR has unique pin assignments: +IN (3), –IN (4), OUT (1), V+ (5), V– (2), and NC (6,7,8). Substitution requires PCB redesign.
What is the thermal shutdown threshold for OPA192IDGKR?
The OPA192IDGKR incorporates thermal protection that activates at 140°C junction temperature, as specified in Section 6.7 of the datasheet. Once triggered, the device shuts down output and enters a safe high-impedance state until junction temperature falls below the hysteresis threshold (~125°C). This protects against sustained overload or poor heatsinking in enclosed industrial enclosures.
Can OPA192IDGKR drive a 1-nF capacitive load stably?
Yes-TI characterizes the OPA192IDGKR for stable operation with up to 1 nF capacitive load, as stated in the Features list and verified in Figure 32–33 (Small Signal Overshoot vs Capacitive Load). No external isolation resistor is required, simplifying layout in ADC input and filter applications where stray capacitance exceeds 500 pF.
OPA192IDGKR 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:
- 20V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA192IDGKR FAQ
1.How can I place an order for OPA192IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA192IDGKR 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 OPA192IDGKR reliable?
The price and inventory of OPA192IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA192IDGKR is usually 5 days.
3.What payment methods are accepted for OPA192IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA192IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA192IDGKR?
OPA192IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA192IDGKR 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 OPA192IDGKR?
For technical support, including OPA192IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA192IDGKR requirements.
6.How does Aetrix verify that OPA192IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA192IDGKR 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 OPA192IDGKR meets industry standards.
7.What is the process for return or replacement of OPA192IDGKR?
All OPA192IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA192IDGKR, 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 OPA192IDGKR part is unused and in its original packaging.
Return procedure for OPA192IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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