OPA2192IDGKT - 36V Precision RRIO Op Amp, 10MHz, Dual | Texas Instruments
MPN: OPA2192IDGKT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.92 | $192.00 |
| 500 | $1.74 | $870.00 |
| 1,000 | $1.56 | $1,560.00 |
| 2,500 | $1.38 | $3,450.00 |
OPA2192IDGKT Overview
A precision operational amplifier (op amp) is a high-gain DC-coupled analog building block used to amplify small differential signals in instrumentation, signal conditioning, and active-filter chains. The OPA2192 belongs to the e-trim chopper-stabilized family that achieves CMOS-class input bias current with bipolar-class DC accuracy, positioning it above general-purpose op amps in the precision amplifier hierarchy: precision op amp -> operational amplifier -> analog IC -> signal chain -> semiconductor.
Key features include differential input range that extends to both supply rails, integrated EMI/RFI rejection input filtering, and 6 V to 36 V single-supply operation (or ±3 V to ±18 V dual-supply). The e-trim process eliminates the traditional chopper chopping artifacts, making the part suitable for DC-coupled precision paths where chopper noise would otherwise be unacceptable.
Architecture-wise, the OPA2192 combines a CMOS input differential pair with TI's e-trim calibration to correct residual input-referred offset at the wafer level. This achieves laser-trim performance without active chopping, providing clean DC behavior at low frequencies while still supporting the 10 MHz GBW required by audio and wide-bandwidth transducer signal conditioning.
Typical applications include industrial process-control analog front ends, precision analog-input modules for PLCs, multi-channel data-acquisition (DAQ) signal conditioning, precision active filters, and transducer excitation/readout such as bridge amplifiers and RTD conditioners. The wide supply range allows direct interface to ±15 V industrial rails as well as 24 V loop-powered systems.
When designing with this device, ensure that the input common-mode voltage stays within the rail-to-rail range (which includes both rails). Decouple the supply pins with a 100 nF ceramic capacitor placed within 5 mm of the device, and consider a 10 µF bulk capacitor for high-output-current transients. The exposed thermal pad (if present on the package variant) must be soldered to a copper pour for rated thermal performance.
This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes that go beyond the manufacturer datasheet, helping engineers shorten selection time and avoid common layout pitfalls.
Drop-in alternatives for OPA2192IDGKT — 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 OPA2192IDGKT (same form factor and footprint) — differing in Operating Temperature Range, Package, Slew Rate, Input Offset Voltage (max), MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
OPA2192IDGKR
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →OPA2192IDGK
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →OPA2227IDGKR
✅ Drop-In📋 Reference alternative (not in catalog)
OPA2192IDGKT Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 (Dual) |
| Amplifier Type | Precision Operational Amplifier |
| Supply Voltage (Single) | 4.5 V to 36 V |
| Supply Voltage (Dual) | ±2.25 V to ±18 V |
| Input Offset Voltage (typ) | ±5 µV |
| Input Offset Drift (typ) | ±0.2 µV/°C |
| Unity-Gain Bandwidth | 10 MHz |
| Slew Rate | 20 V/µs |
| Quiescent Current per Channel | 1 mA |
| Output Current per Channel | 65 mA |
| Input/Output Range | Rail-to-Rail (RRIO) |
| Operating Temperature Range | -40 °C to +125 °C |
| Package | 8-pin VSSOP (DGK) |
| Mounting Type | Surface Mount |
| MSL Level | 2 |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
OPA2192IDGKT Pin Configuration
| Pin 1 | OUTA — Channel A output |
| Pin 2 | INA- — Channel A inverting input |
| Pin 3 | INA+ — Channel A non-inverting input |
| Pin 4 | V- — Negative supply (or GND for single supply) |
| Pin 5 | INB+ — Channel B non-inverting input |
| Pin 6 | INB- — Channel B inverting input |
| Pin 7 | OUTB — Channel B output |
| Pin 8 | V+ — Positive supply |
Typical Applications
OPA2192IDGKT is suitable for 6 applications: Industrial Process-Control Analog Front End, Precision Active Filters and Signal Conditioning, Multi-Channel Data Acquisition Signal Chains, Transducer Bridge Amplifier (Strain Gauge / Load Cell), Medical Instrumentation Signal Conditioning, Test and Measurement Instrumentation.
Industrial Process-Control Analog Front End
The OPA2192IDGKT is an ideal dual op amp for industrial 4-20 mA loop transmitters and PLC analog-input modules. Its 4.5 V to 36 V single-supply range accepts 24 V industrial rails directly without pre-regulation, and the rail-to-rail input stage tolerates input common-mode voltages that swing to both rails during fault conditions. Each channel can source or sink up to 65 mA, sufficient to drive low-impedance loads and 4-20 mA loops without an additional buffer. Typical circuit: a precision instrumentation front end built from two OPA2192 channels in difference-amp configuration, with 0.1% resistors setting gain of 10 or 100. The 10 MHz bandwidth preserves signal integrity for fast process variables, while ±5 µV typical offset preserves calibration accuracy over a 0-10 V industrial input range, achieving better than 0.001% linearity.
Recommended
Precision Active Filters and Signal Conditioning
The OPA2192IDGKT's combination of 10 MHz GBW, 20 V/µs slew rate, and ±5 µV typical input offset makes it well suited to precision active filters such as Sallen-Key low-pass, multiple-feedback band-pass, and state-variable topologies. Each channel can implement one filter stage, with the dual package enabling a 2-pole low-pass or a complete biquad from a single IC. The 65 mA output drive accommodates heavy filter capacitive loads up to 1 nF without instability, simplifying buffering decisions. The 36 V supply headroom allows high-amplitude signal swings for audio band processing or wide-dynamic-range sensor conditioning. Designers should use 0.1% metal-film resistors and C0G/NP0 capacitors to realize theoretical filter response, leveraging the e-trim offset of ±5 µV to avoid DC errors near filter corner frequencies.
Recommended
Multi-Channel Data Acquisition Signal Chains
The OPA2192IDGKT is a strong fit for multi-channel data-acquisition (DAQ) signal chains where multiple op amps sit between sensors and an ADC. The dual-channel 8-pin VSSOP footprint allows two channels per small PCB area, doubling channel density versus single op amps. Each channel can buffer a sensor, implement gain, drive an ADC input, and reject common-mode noise — all from a 36 V supply that accommodates industrial sensor outputs. The 10 MHz GBW ensures settling time within 1 µs for 16-bit acquisitions, while the 20 V/µs slew rate limits distortion on large input steps. Compared to chopper op amps, the e-trim topology avoids chopping-clock intermodulation with downstream ADC sampling, which is critical when the ADC sampling rate is near 10 kHz and the chopping clock would alias into the passband.
Recommended
Transducer Bridge Amplifier (Strain Gauge / Load Cell)
The OPA2192IDGKT's e-trim ±5 µV typical input offset and ±0.2 µV/°C drift are critical for bridge-amplifier applications where millivolt-level differential signals must be amplified by 100-1000x without DC error. Both channels of the dual op amp can be configured as an instrumentation front end (INA), with the second channel providing gain or active filtering. The 36 V supply allows excitation of 10 V bridges, doubling the signal amplitude versus 5 V-excited designs and improving SNR by 6 dB. The 10 MHz GBW preserves fast transient response for impact or vibration measurements. Unlike chopper amplifiers, the e-trim topology avoids chopping-clock ripple in the bridge excitation path, eliminating interference with sensitive strain measurements and load-cell calibrations.
Recommended
Medical Instrumentation Signal Conditioning
The OPA2192IDGKT is well suited to medical instrumentation front ends such as ECG, EEG, EMG, and patient-monitoring analog inputs. Its low input bias current (e-trim CMOS input stage) minimizes bias-current-induced error on high-impedance biopotential electrodes, while the ±5 µV typical offset preserves microvolt-level signal integrity. The 36 V supply allows operation from medical-grade isolated supplies, and the rail-to-rail input/output simplifies single-supply designs. Each channel can implement an instrumentation front end or active filter for one lead, with the dual package supporting two-lead ECG or EEG channels. Designers should add input protection (TVS diodes, gas-discharge tubes) and right-leg-drive feedback for ECG, plus a 0.5 Hz high-pass filter to remove DC electrode offset. Compared to chopper amplifiers, e-trim avoids chopping-clock artifacts that could be aliased into the diagnostic frequency band.
Recommended
Test and Measurement Instrumentation
The OPA2192IDGKT fits general-purpose test and measurement instruments including bench multimeters, oscilloscope analog front ends, and arbitrary waveform generator output stages. The 10 MHz GBW and 20 V/µs slew rate preserve pulse and step fidelity for frequencies up to 1 MHz, while the ±5 µV typical offset supports accurate DC measurements. Each channel can implement a precision buffer, programmable-gain stage, or active filter, with the dual package allowing two channels per small footprint. The 36 V supply enables direct interface to ±15 V analog rails common in test equipment. The e-trim topology avoids the chopping-clock interference that would otherwise alias into oscilloscope acquisition bandwidth, making the OPA2192 a better choice than zero-drift choppers for wide-bandwidth test instruments where chopping artifacts would corrupt the measurement.
Recommended
Recommended Products Summary
Engineering reference data for OPA2192IDGKT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OPA2192IDGKR | OPA2192IDGK | OPA2227IDGKR |
|---|---|---|---|---|
| Package | VSSOP-8 (DGK) | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Channels | 2 | 2 | 2 | 2 |
| Supply Voltage (Single) | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V | 4.5 V to 36 V |
| GBW | 10 MHz | 10 MHz | 10 MHz | 13 MHz |
| Slew Rate | 20 V/µs | 20 V/µs | 20 V/µs | 5 V/µs |
| Input Offset Voltage (typ) | ±5 µV | ±5 µV | ±5 µV | ±100 µV |
| Architecture | e-trim CMOS input | e-trim CMOS input | e-trim CMOS input | Bipolar precision |
| Quiescent Current (per channel) | 1 mA | 1 mA | 1 mA | 3.7 mA |
Key Differentiators
- e-trim topology avoids chopping-clock artifacts (vs Zero-drift chopper op amps (e.g., OPA2188, ADA4522-2))
- 36 V supply range with 10 MHz GBW (vs OPA2227 (bipolar precision, 8-pin MSOP))
- 65 mA output current drives low-impedance loads directly (vs General-purpose precision op amps (e.g., OPA2277, ~30 mA output))
Design Notes
Decouple each supply pin with a 100 nF X7R ceramic capacitor placed within 5 mm of the IC, plus a bulk 10 µF tantalum or aluminum-polymer capacitor for high transient loads. For dual-supply operation, add a small 100 nF capacitor between V+ and V- to suppress supply-rail crosstalk. The OPA2192 can source/sink up to 65 mA per channel; sustained high output current requires sufficient bulk capacitance to prevent supply droop. Estimated: at 65 mA and 1 µs transient, a 10 µF bulk capacitor holds droop below 10 mV, satisfying rail-noise requirements for 16-bit ADC driving.
The 8-pin VSSOP (DGK) package has no exposed thermal pad and is rated for 4.7 °C/W θJA on a standard JEDEC test board. At 65 mA per channel into a short-circuit load, sustained dissipation per channel can reach (V+ - V-) × 65 mA. In dual-supply ±18 V operation, dissipation is bounded by short-circuit protection limiting continuous on-time; the device survives indefinite shorts to mid-rail but should not see continuous shorts to either rail. Mount on a minimum 1 square inch copper pour for thermal relief in production.
Use a guard ring driven by the same potential as the input trace around high-impedance input nodes to reduce leakage and PCB-induced parasitic paths. Keep input traces short and direct, with a ground plane on layer 2 below the input trace for shielding. For instrumentation front-end layouts, route the two inputs as a differential pair with matched length and width to reject common-mode noise. Avoid routing digital signals directly beneath or near sensitive analog input traces to prevent digital-noise coupling. The e-trim topology is not chopping, so PCB layout does not need special chopping-clock routing concerns.
Do not exceed the absolute maximum supply voltage of 40 V (datasheet stress rating). Do not apply input voltages beyond the supply rails; although the OPA2192 tolerates rail-to-rail input, exceeding the rails with input current above 10 mA can damage the input ESD structures. The e-trim topology requires the supply to be present before applying input signals to avoid startup transients; allow a 1 ms power-on delay for e-trim calibration to settle. Always verify the input common-mode range at your operating temperature, since rail-to-rail performance can degrade near the rails under heavy load.
Compliance Information
RoHS compliant per TI product page. Lead-free and halogen-free per TI MSL rating. Not AEC-Q100 qualified; for automotive applications consider the OPA2192IDGKT-Q1 automotive variant.
