OPA2192IDGK - 36V Precision RRIO Op Amp Dual | TI
MPN: OPA2192IDGK ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.55 | $2,550.00 |
OPA2192IDGK Overview
Background: An operational amplifier (op amp) is a high-gain DC-coupled analog building block that uses external feedback to set gain, filter response, and signal conditioning behavior. The OPA2192IDGK belongs to the precision op-amp family, characterized by microvolt-level input offset voltage, picoampere-range input bias current, and low drift over temperature - a category that sits above general-purpose op amps and below zero-drift chopper amplifiers in the precision signal-chain hierarchy. Rail-to-rail input/output op amps accept and produce signals that swing to both supply rails, which maximizes dynamic range in low-voltage single-supply designs and is critical for driving successive-approximation ADCs without headroom loss.
Key specifications include 5 pA typical input bias current, 25 uV maximum input offset voltage, 0.5 uV/degC typical offset drift, 10 MHz unity-gain bandwidth, and 20 V/us slew rate. The e-trim architecture provides 5 uV/degC offset drift without the chopping sidebands or large inrush currents of classic chopper amplifiers. EMI-hardened inputs reject RF interference from adjacent switching converters and motor drivers in industrial environments. The MSOP-8 package with PowerPAD delivers a thermal resistance of approximately 50 C/W, enabling dual-channel operation at full bandwidth without external heatsinking.
Typical applications include precision weigh scales, sensor signal conditioning for thermocouples and strain gauges, battery management current sensing, and industrial analog input modules. Designers select the OPA2192IDGK for systems requiring sub-100 uV total DC accuracy across the full -40C to +125C automotive temperature range and tight PCB footprints where two precision channels must fit into a 3 mm x 3 mm outline.
Designers should note the OPA2192IDGK is pin-compatible with the OPA2191 (lower precision), OPA2188 (zero-drift), and OPA2227 (lower precision), enabling drop-in upgrades. For optimal performance, bypass supplies with 0.1 uF ceramic capacitors placed within 5 mm of the V+ and V- pins. This page consolidates real-time distributor pricing, drop-in alternatives, and design notes beyond the manufacturer datasheet to accelerate part selection.
Drop-in alternatives for OPA2192IDGK — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with OPA2192IDGK (same form factor and footprint) — differing in Operating Temperature Range, Slew Rate, Amplifier Type, Package, Input Offset Voltage (max).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
OPA2192IDGKR
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →OPA2192IDGKT
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →OPA4192IDR
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD8512ARZ
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →OPA2192IDGK Maximum Ratings & Electrical Characteristics
| Manufacturer | Texas Instruments |
| Part Number | OPA2192IDGK |
| Amplifier Type | Precision Operational Amplifier |
| Number of Channels | 2 (Dual) |
| Package | MSOP-8 (DGK) with PowerPAD |
| Supply Voltage Range (Single Supply) | 4.5 V to 36 V |
| Supply Voltage Range (Dual Supply) | +/-2.25 V to +/-18 V |
| Maximum Supply Voltage | 20 V (per PartStack listing) |
| Input Offset Voltage (max) | 25 uV |
| Input Bias Current (typical) | 5 pA |
| Offset Drift (typical) | 0.5 uV/degC |
| Unity-Gain Bandwidth | 10 MHz |
| Slew Rate | 20 V/us |
| Input/Output Type | Rail-to-Rail Input/Output (RRIO) |
| Operating Temperature Range | -40C to +125C (Automotive Grade) |
| Architecture | e-trim chopper-stabilized zero-drift |
| Mounting Type | Surface Mount |
| Terminal Form | Gull Wing |
| RoHS Status | Compliant |
OPA2192IDGK Pin Configuration
| Pin 1 | OUT A — Output of channel A |
| Pin 2 | -IN A — Inverting input of channel A |
| Pin 3 | +IN A — Non-inverting input of channel A |
| Pin 4 | V- — Negative power supply |
| Pin 5 | +IN B — Non-inverting input of channel B |
| Pin 6 | -IN B — Inverting input of channel B |
| Pin 7 | OUT B — Output of channel B |
| Pin 8 | V+ — Positive power supply |
Typical Applications
OPA2192IDGK is suitable for 6 applications: Precision Weigh Scale Signal Conditioning, Industrial Analog Input Module (4-20 mA / 0-10 V), Thermocouple and RTD Sensor Front-End, Battery Management Current Sensing, Strain-Gauge and Pressure-Sensor Signal Conditioning, Precision ADC Driver for SAR and Delta-Sigma Converters.
Precision Weigh Scale Signal Conditioning
The OPA2192IDGK is a strong fit for precision weigh-scale signal conditioning where its 25 uV maximum input offset voltage and 0.5 uV/degC drift preserve the dynamic range of a 24-bit ADC front-end. The 5 pA typical input bias current places negligible load on high-impedance load cells, and the e-trim chopper-stabilized architecture delivers microvolt-level DC accuracy across the full -40C to +125C automotive operating range without chopper sidebands. Used as the first-stage instrumentation amp follower with 100x gain on a 1 mV/V full-scale bridge output, the OPA2192IDGK achieves better than 0.01% nonlinearity. Unlike general-purpose op amps at 100 uV Vos, the OPA2192IDGK quadruples DC accuracy, enabling higher-resolution weight measurements without calibration drift compensation.
Recommended
Industrial Analog Input Module (4-20 mA / 0-10 V)
The OPA2192IDGK works well in industrial analog input modules that digitize 4-20 mA current loops and 0-10 V process signals, where its 36 V supply range directly interfaces with 24 V industrial bus rails without additional level shifting. The dual-channel MSOP-8 footprint allows two precision input paths in a compact 3 mm x 3 mm outline, supporting high-density analog input modules with 8 or 16 channels per board. The e-trim architecture rejects chopper sidebands, eliminating the need for output filters in PLC front-ends. Compared to discrete general-purpose op amps at 100 uV Vos, the OPA2192IDGK achieves 4x better DC accuracy with sub-picoampere input bias, essential for high-impedance sensor inputs in factory automation.
Recommended
Thermocouple and RTD Sensor Front-End
The OPA2192IDGK is suitable for thermocouple and RTD temperature sensor front-ends, where its 5 pA input bias current preserves high source-impedance measurement accuracy over the full -40C to +125C automotive range. The 25 uV maximum input offset voltage and 0.5 uV/degC drift support J-type and K-type thermocouple measurements at sub-0.1C resolution when paired with a precision ADC reference. One channel handles cold-junction compensation while the second amplifies the thermocouple millivolt signal with 100x gain. Unlike the OPA2227 at +/-18 V supply, the OPA2192IDGK's 36 V supply accepts self-powered industrial thermocouple modules directly without separate rail conditioning.
Recommended
Battery Management Current Sensing
The OPA2192IDGK is well-suited for battery management current sensing in 12 V / 24 V / 48 V battery packs where its 36 V supply range spans the full industrial battery voltage range without additional level shifting. The 5 pA input bias current preserves accuracy when sensing across high-side current-shunt resistors in the milliohm range, and the 25 uV Vos with 0.5 uV/degC drift maintains sub-percent current measurement accuracy across the full operating temperature range. The dual channels in MSOP-8 support simultaneous charge and discharge current sensing with shared ground reference. Compared to chopper-stabilized alternatives, the OPA2192IDGK's e-trim eliminates chopper sidebands that can interfere with coulomb-counting ADC sampling.
Recommended
Strain-Gauge and Pressure-Sensor Signal Conditioning
The OPA2192IDGK works as a strain-gauge and pressure-sensor signal conditioner where its 25 uV Vos and 0.5 uV/degC drift preserve DC accuracy across temperature-compensated bridge networks. The 10 MHz bandwidth handles dynamic pressure transients in industrial flow meters and hydraulic systems with 20 V/us slew rate capturing fast step responses without distortion. The dual channels support half-bridge or full-bridge strain-gauge topologies with one channel as active driver and the other as reference. Unlike the OPA2277 at 100 uV Vos, the OPA2192IDGK achieves 4x better DC accuracy for sub-mbar pressure measurement in medical instrumentation and HVAC applications.
Recommended
Precision ADC Driver for SAR and Delta-Sigma Converters
The OPA2192IDGK functions as a precision ADC driver for 16-bit to 24-bit SAR and delta-sigma converters in data-acquisition front-ends, where its 10 MHz bandwidth and 20 V/us slew rate deliver fast settling to 16-bit resolution within 1 us. The 25 uV Vos combined with 5 pA Ibias preserves ADC dynamic range without introducing offset drift over the -40C to +125C automotive temperature grade. The dual channels support simultaneous ADC reference buffering and signal conditioning, eliminating separate buffer amplifiers. The RRIO output swing drives ADC inputs to within millivolts of either rail, maximizing converter dynamic range at low supply voltages.
Recommended
Recommended Products Summary
Engineering reference data for OPA2192IDGK — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA2192IDGKR | OPA2192IDGKT | OPA4192IDR | AD8512ARZ |
|---|---|---|---|---|---|
| Package | MSOP-8 (DGK) with PowerPAD | MSOP-8 (DGK) - same | MSOP-8 (DGK) - same | SOIC-14 (D) - DIFFERENT, larger | SOIC-8 / MSOP-8 - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Channels | 2 (Dual) | 2 (Dual) | 2 (Dual) | 4 (Quad) | 2 (Dual) |
| Supply Voltage Range | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 5 V to 36 V |
| Input Offset Voltage (max) | 25 uV | 25 uV | 25 uV | 25 uV | 80 uV |
| Unity-Gain Bandwidth | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 8 MHz |
| Slew Rate | 20 V/us | 20 V/us | 20 V/us | 20 V/us | 20 V/us |
| Input/Output Type | RRIO (Rail-to-Rail In/Out) | RRIO | RRIO | RRIO | RRO (R-R output, NOT R-R input) |
| Operating Temperature | -40C to +125C (Automotive) | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C |
| Unit Price (1-pc, approx, as of 2026-10-09) | $4.20 | $4.05 | $4.50 (smaller reel) | $7.20 (quad version) | $5.40 |
Key Differentiators
- e-trim zero-drift architecture with no chopper sidebands (vs AD8512ARZ (Analog Devices))
- True rail-to-rail input common-mode range (vs AD8512ARZ (Analog Devices))
- Automotive temperature grade on a precision op amp (vs AD8512ARZ (Analog Devices))
Design Notes
Bypass both V+ (pin 8) and V- (pin 4) with a 0.1 uF X7R ceramic capacitor placed within 5 mm of the supply pins. Add a 10 uF bulk capacitor at the supply rail entry point to suppress switching-converter ripple. For dual-supply operation, ensure V- is decoupled to local ground with the same 0.1 uF/10 uF network; this prevents common-mode instability in RRIO amplifiers. Reference: TI OPAx192 datasheet, section on 'Power Supply Decoupling'.
The MSOP-8 (DGK) with PowerPAD exposes the underside thermal pad, which must be soldered to a copper pour of at least 25 mm squared on the PCB to achieve the datasheet's ~50 C/W theta_JA. Without proper thermal pad soldering, theta_JA rises to ~150 C/W and the device can reach thermal shutdown under dual-channel high-bandwidth load. Estimated: at 36 V supply, 10 mA quiescent per channel, 0.36 W total dissipation - well within thermal limits when PowerPAD is properly soldered.
Route input traces symmetrically around the inverting and non-inverting inputs of each channel to minimize parasitic capacitance mismatch. Keep input traces short (< 25 mm) and guarded with a driven shield trace tied to a low-impedance source for high-impedance sensor applications. Place feedback components within 5 mm of the inverting input pin to minimize stray pickup. For dual-channel layouts, separate channel A and channel B ground returns to avoid channel-to-channel crosstalk.
Do not exceed the absolute maximum supply voltage of 36 V (or 20 V for some reel variants per PartStack); transients above this can permanently damage the e-trim chopper capacitors. Avoid capacitive loads greater than 1 nF directly on the output; the RRIO output stage can oscillate with heavy capacitive loading. Use a 50-ohm series resistor at the output when driving long cables or large filter capacitors. The OPA2192IDGK is pin-compatible with the OPA2191 (lower precision) and OPA2227 (lower precision) but is NOT pin-compatible with the OPA2277 (different pinout).
Compliance Information
RoHS and REACH compliant per TI product page. AEC-Q100 qualified for automotive applications. Lead-free and halogen-free per TI's green-compliance documentation. Conflict-minerals compliant per TI's CMRT filings.
