My Inquiry
My Account
Texas Instruments OPA197IDGKR
- Part No.:
- OPA197IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA197IDGKR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,026
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA197IDGKR from Texas Instruments is a single-channel, 36-V precision rail-to-rail input/output operational amplifier optimized for high-voltage industrial signal conditioning. It delivers ±100 µV max offset voltage, 10-MHz gain-bandwidth, 20 V/µs slew rate, and ±65 mA output drive - enabling accurate amplification in multiplexed data-acquisition systems, high-side current sensing, and SAR ADC reference buffering.
For engineers reviewing the OPA197IDGKR datasheet, OPA197IDGKR pinout, OPA197IDGKR application, or OPA197IDGKR equivalent, this page provides verified specifications, package-validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The OPA197IDGKR employs a robust bipolar-input architecture with EMI/RFI-filtered inputs and differential input voltage range extended to the supply rails. Its 120 dB minimum CMRR and ±5 pA typical input bias current support high-impedance sensor interfacing without degradation across –40°C to +125°C.
It features thermal protection (140°C trip), 1 nF capacitive load drive capability, and stable operation under wide supply conditions (±2.25 V to ±18 V or +4.5 V to +36 V), making it suitable for harsh industrial environments where rail-to-rail swing and DC precision are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | ±100 µV max - ensures ≤0.001% gain error in 10-V full-scale precision measurement paths |
| Gain-Bandwidth Product | 10 MHz - supports stable closed-loop gain ≥10 at 1 MHz for anti-aliasing filter interfaces |
| Slew Rate | 20 V/µs - enables clean 10-V step response in <1.4 µs to 0.01%, critical for fast SAR ADC drivers |
| Supply Range | +4.5 V to +36 V (single) or ±2.25 V to ±18 V (dual) - interoperable with PLC analog I/O and HV sensor front-ends |
| Output Drive | ±65 mA - drives 2-kΩ loads to within 430 mV of rails, supporting active filtering and reference buffering |
| Input Bias Current | ±5 pA typical - minimizes voltage error in >100-MΩ bridge or thermocouple sensor networks |
| CMRR | 120 dB min - rejects >100,000:1 common-mode interference in noisy industrial ground domains |
Pinout & Package
The OPA197IDGKR is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm, with exposed pad for thermal enhancement and surface-mount compatibility in space-constrained industrial PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 3) | Noninverting input | High-impedance node accepting sensor signals up to supply rails; EMI-filtered per TI design |
| –IN (Pin 2) | Inverting input | Differential input node; supports unity-gain stable configurations and precision feedback networks |
| OUT (Pin 6) | Amplifier output | Capable of ±65 mA sink/source; drives 1 nF directly without external isolation resistor |
| V+ (Pin 7) | Positive supply | Highest potential rail; accepts up to +36 V or +18 V in dual-supply mode |
| V– (Pin 4) | Negative supply | Lowest potential rail; supports true rail-to-rail input down to (V–) – 0.1 V |
| NC (Pins 1, 5, 8) | No internal connection | Unbonded die pads; must remain floating - no routing or grounding required |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply 24-V industrial systems without level-shifting circuitry |
| EMI- and RFI-filtered inputs | Reduces susceptibility to 30–1000 MHz noise in factory-floor motor-drive and PLC environments |
| Differential input voltage range to supply rail | Allows direct interface to overvoltage-prone sensors (e.g., shunt-based current monitors) without clamping diodes |
| 1 nF capacitive load drive | Eliminates need for output series resistor when driving ADC input filters or long traces |
| Thermal shutdown at 140°C | Prevents latch-up or parametric shift during sustained overload in enclosed enclosures |
Applications
| Multiplexed Data Acquisition | SAR ADC Reference Buffer |
|---|---|
Use Scenario: High-channel-count DAQ system using 4:2 HV MUX and ADS8864 ADC, with OPA197IDGKR conditioning each channel before sampling. IC Role / Device Role / Timing Role: Precision gain stage and antialiasing filter driver; maintains signal integrity across 16-bit resolution. Use Value: ±100 µV offset and 5.5 nV/√Hz noise ensure <0.5 LSB total error contribution at 10-V FS, preserving ENOB. | Use Scenario: REF3140 reference voltage buffered to ADS8864 REF pin via OPA197IDGKR in a low-drift, low-noise configuration. IC Role / Device Role / Timing Role: Low-output-impedance reference driver with rail-to-rail swing ensuring stable ADC reference under varying load. Use Value: 120 dB CMRR and ±5 pA IB suppress reference error from digital switching noise and leakage paths. |
| High-Side Current Sensing | Bridge Sensor Signal Conditioning |
Use Scenario: Bidirectional current monitoring in 24-V motor control using shunt resistor placed between load and supply rail. IC Role / Device Role / Timing Role: High-common-mode differential amplifier with G = 20, rejecting 24-V common-mode while amplifying mV-level shunt drops. Use Value: Differential input range to supply rail allows direct connection without level-shift ICs; ±2.5 µV/°C drift limits temp-induced gain error to <0.01% over –40°C to +125°C. | Use Scenario: Wheatstone bridge (e.g., load cell or pressure transducer) with excitation at 5–10 V, output amplified by OPA197IDGKR before ADC. IC Role / Device Role / Timing Role: Instrumentation-grade front-end amplifier providing gain, offset nulling, and noise filtering. Use Value: 10-MHz GBW supports active RC filtering at >100 kHz; 1.3 µVPP 0.1–10 Hz noise preserves microvolt-level bridge resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA192IDBVR | Lower offset drift (±0.2 µV/°C typ vs ±2.5 µV/°C max); same 10-MHz GBW and rail-to-rail I/O | Better suited for ultra-stable temperature-critical instrumentation; lacks EMI filtering on inputs | Select OPA192IDBVR when long-term DC stability outweighs EMI immunity in shielded lab equipment |
| AD8676ARMZ | Higher precision (±25 µV max offset), but narrower supply (±5 V to ±15 V) and lower output drive (±20 mA) | Optimized for low-voltage, low-power metrology; not rated for 36-V industrial supplies or high-current loads | Choose AD8676ARMZ only in battery-powered or low-voltage test gear where 36-V operation is unnecessary |
Compared with OPA197IDGKR, OPA192IDBVR trades EMI hardening for superior temperature drift performance, while AD8676ARMZ offers tighter initial offset at the cost of supply range and output current - making OPA197IDGKR the balanced choice for ruggedized, wide-supply industrial signal chains.
Availability
OPA197IDGKR is available at Aetrix Electronics and suitable for multiplexed data acquisition, high-side current sensing, and SAR ADC reference buffering requiring stable component supply across automotive, industrial automation, and test equipment programs.
Supply support for OPA197IDGKR 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 for industrial, automotive, and communications markets.
The OPA197IDGKR belongs to TI's precision op-amp portfolio designed specifically for high-voltage, high-accuracy signal conditioning in harsh industrial environments - emphasizing rail-to-rail operation, EMI resilience, and thermal robustness.
FAQ
What is the maximum supply voltage rating for the OPA197IDGKR?
The OPA197IDGKR supports a maximum total supply voltage of 40 V in single-supply mode or ±20 V in dual-supply mode, as specified in its Absolute Maximum Ratings table. Operation beyond these limits risks permanent damage. For reliable long-term use, TI recommends staying within the Recommended Operating Conditions: +4.5 V to +36 V (single) or ±2.25 V to ±18 V (dual). The OPA197IDGKR maintains full rail-to-rail functionality across this entire range.
Does the OPA197IDGKR require external compensation for unity-gain stability?
No, the OPA197IDGKR is internally compensated and unity-gain stable across its full operating range. Its 10-MHz gain-bandwidth product and phase margin are validated for closed-loop gains ≥1 with resistive feedback networks and capacitive loads up to 1 nF. TI's datasheet confirms stable small-signal step response and no phase reversal under all tested conditions - eliminating the need for external compensation components in standard amplifier configurations using the OPA197IDGKR.
Can the OPA197IDGKR drive a 10-kΩ load to within 100 mV of the positive rail?
Yes. At room temperature and ±18 V supply, the OPA197IDGKR delivers a typical positive-rail output swing of 95 mV with a 10-kΩ load - well within the 100 mV requirement. This rail-to-rail output performance is maintained across the full –40°C to +125°C temperature range and over supply voltages from ±2.25 V to ±18 V. The OPA197IDGKR achieves this using a proprietary output stage that sustains low saturation voltage even under moderate load currents.
Is the OPA197IDGKR pin-compatible with other members of the OPAx197 family?
No - the OPA197IDGKR (single-channel, DGK package) is not pin-compatible with OPA2197 (dual) or OPA4197 (quad) variants. While all share identical pin functions per channel, the OPA197IDGKR uses an 8-pin VSSOP layout with dedicated +IN, –IN, OUT, V+, and V– pins plus three NC terminals. Dual and quad versions allocate pins differently to accommodate multiple channels, so PCB layout must be specific to the OPA197IDGKR footprint. Always verify against the DGK package drawing in the OPA197IDGKR datasheet.
What is the thermal resistance (RθJA) of the OPA197IDGKR in its VSSOP-8 package?
The junction-to-ambient thermal resistance (RθJA) for the OPA197IDGKR in the DGK (VSSOP-8) package is 180.4°C/W, as measured per JEDEC JESD51-2 standards on a 2-layer board with 1-in² copper area. This value assumes standard PCB layout practices - including thermal vias under the exposed pad - and is critical for calculating maximum power dissipation at elevated ambient temperatures. TI also specifies RθJC(top) = 67.9°C/W and ψJB = 100.3°C/W to support accurate thermal modeling of the OPA197IDGKR in real-world industrial assemblies.
OPA197IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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:
- 25 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- -
- 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
OPA197IDGKR FAQ
1.How can I place an order for OPA197IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA197IDGKR 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 OPA197IDGKR reliable?
The price and inventory of OPA197IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA197IDGKR is usually 5 days.
3.What payment methods are accepted for OPA197IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA197IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA197IDGKR?
OPA197IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA197IDGKR 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 OPA197IDGKR?
For technical support, including OPA197IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA197IDGKR requirements.
6.How does Aetrix verify that OPA197IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA197IDGKR 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 OPA197IDGKR meets industry standards.
7.What is the process for return or replacement of OPA197IDGKR?
All OPA197IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA197IDGKR, 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 OPA197IDGKR part is unused and in its original packaging.
Return procedure for OPA197IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA197IDGKR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
