My Inquiry
My Account
Texas Instruments OPA4197IPW
- Part No.:
- OPA4197IPW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OPA4197IPW.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:418
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA4197IPW from Texas Instruments is a quad-channel, 36-V precision rail-to-rail input/output operational amplifier optimized for high-voltage industrial data acquisition. It delivers ±100 µV max input offset voltage, 10-MHz gain-bandwidth, 20 V/µs slew rate, and ±65 mA output drive-enabling accurate signal conditioning in multiplexed ADC front-ends and high-side current sensing.
For engineers reviewing the OPA4197IPW datasheet, OPA4197IPW pinout, OPA4197IPW application, or OPA4197IPW equivalent, this page provides verified specifications, TSSOP-14 package layout, real-world use cases in SAR ADC reference buffering and programmable logic controllers, and two validated alternative parts with documented functional trade-offs.
Technical Context
The OPA4197IPW integrates four independent precision op-amps sharing common supply rails (V+, V–) in a single TSSOP-14 package. Each channel supports rail-to-rail input common-mode range extending 0.1 V beyond both supply rails and rail-to-rail output swing within 25 mV of either rail under no-load conditions.
Its architecture features EMI/RFI-filtered inputs, differential input voltage tolerance up to the full supply rail, and robust capacitive load drive capability (up to 1 nF), making it suitable for noisy industrial environments where signal integrity and stability across varying source impedances are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +4.5 V to +36 V single or ±2.25 V to ±18 V dual-supports wide industrial power rails including 24-V systems. |
| Input Offset Voltage | ±100 µV maximum at TA = –40°C to +125°C-enables sub-16-bit accuracy in precision sensor interfaces without trimming. |
| Gain-Bandwidth Product | 10 MHz-sufficient for driving 16-bit+ SAR ADCs with minimal settling error at sampling rates up to 1 MSPS. |
| Slew Rate | 20 V/µs-ensures fast transient response for dynamic signals like motor current waveforms or pulse-width modulated references. |
| Common-Mode Rejection | 120 dB minimum-rejects noise coupled onto high-impedance sensor lines in PLC analog input modules. |
| Output Drive Current | ±65 mA per channel-drives low-impedance loads such as reference buffers for ADS8864 or active filters without external boost stages. |
| Quiescent Current | 1.3 mA per amplifier typical-balances performance and power efficiency in multi-channel, always-on monitoring systems. |
Pinout & Package
TSSOP-14 package (5.00 mm × 4.40 mm body size) with exposed thermal pad (not electrically connected). Pin 1 marked by dot; pin numbering follows standard counter-clockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN A | Noninverting input, Channel A | Accepts high-impedance sensor signals (e.g., thermocouple, bridge) with rail-to-rail common-mode range. |
| –IN A | Inverting input, Channel A | Configures closed-loop gain or feedback path; supports differential input configurations with matched resistors. |
| OUT A | Output, Channel A | Delivers rail-to-rail output swing (25 mV from rail, no load); drives ADC inputs or reference buffers directly. |
| +IN B | Noninverting input, Channel B | Dedicated input for second signal path-enables dual-sensor monitoring or chopper-stabilized architectures. |
| –IN B | Inverting input, Channel B | Independent feedback node; allows simultaneous gain/offset adjustment per channel without crosstalk. |
| OUT B | Output, Channel B | Electrically isolated output stage-supports parallel processing of multiple analog channels on one IC. |
| V+ | Positive supply | Highest potential rail; must be decoupled locally with ≥1 µF ceramic capacitor to suppress supply noise. |
| –IN C | Inverting input, Channel C | Third channel input; enables three-phase current sensing or triple-redundant signal paths in safety-critical designs. |
| +IN C | Noninverting input, Channel C | High-CMRR input for third analog channel-maintains precision even with ground shifts across distributed systems. |
| OUT C | Output, Channel C | Full-output-drive capability (±65 mA) supports active filtering or direct connection to analog multiplexer switches. |
| +IN D | Noninverting input, Channel D | Fourth independent input-used for reference voltage monitoring, diagnostics, or auxiliary sensor conditioning. |
| –IN D | Inverting input, Channel D | Enables fourth closed-loop configuration; supports calibration loopback or self-test functionality. |
| OUT D | Output, Channel D | Final output channel; can buffer REF3140 reference or drive high-capacitance antialiasing filters up to 1 nF. |
| V– | Negative supply | Lowest potential rail; connects to system ground or negative supply; requires local 1-µF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 36-V supply range-critical for maximizing dynamic range in high-voltage sensor interfaces. |
| ±100 µV max input offset voltage | Reduces DC error in precision current sensing below 0.1% at 100 mΩ shunt resistors without calibration. |
| 10-MHz bandwidth with 20 V/µs slew rate | Supports accurate amplification of fast transients in motor control feedback loops and power quality analyzers. |
| EMI- and RFI-filtered inputs | Suppresses 30–1000 MHz interference from switching power supplies and RF sources in industrial enclosures. |
| 1 nF capacitive load drive capability | Stabilizes output when driving long PCB traces or RC antialiasing filters-eliminates need for isolation resistors. |
| –40°C to +125°C operating temperature | Validated for under-hood automotive, factory-floor PLCs, and outdoor energy metering applications. |
Applications
| Multiplexed Data-Acquisition System | SAR ADC Reference Buffer |
|---|---|
Use Scenario: Simultaneous sampling of 8-channel bridge sensors using a 4:2 HV MUX and ADS8864 ADC. IC Role / Device Role / Timing Role: OPA4197IPW configures as four independent gain stages driving MUX inputs while rejecting common-mode noise from shared ground returns. Use Value: 120 dB CMRR maintains >16-bit ENOB despite 100-mV ground bounce between sensor nodes. | Use Scenario: Buffering REF3140 4.096-V reference for ADS8864 to minimize code-dependent errors. IC Role / Device Role / Timing Role: Low-noise, low-offset buffer isolating reference from ADC switching currents and maintaining stable VREF during conversion cycles. Use Value: ±100 µV offset contributes <0.0025% gain error-within 16-bit LSB tolerance (63 µV). |
| Programmable Logic Controller Analog Input | High-Side Current Sensing |
Use Scenario: Four-channel 4–20 mA receiver with HART modulation support in industrial I/O modules. IC Role / Device Role / Timing Role: OPA4197IPW implements transimpedance amplifiers and level translators for isolated current loop interfaces. Use Value: Rail-to-rail input accommodates 0–24 V loop compliance voltage; 10-MHz GBW preserves HART signal fidelity up to 1200 Hz. | Use Scenario: Monitoring phase currents in 3-phase inverter drives using shunt resistors on high-side switches. IC Role / Device Role / Timing Role: Precision difference amplifier with matched internal resistors rejects common-mode voltages up to 36 V. Use Value: Differential input voltage range to supply rail allows direct connection to 24-V bus without level-shifting components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4192IPW | Lower offset drift (±0.2 µV/°C vs ±2.5 µV/°C), same 10-MHz GBW and rail-to-rail I/O. | Better long-term stability in unregulated ambient environments; identical pinout and footprint. | Select OPA4192IPW when temperature-induced drift dominates total error budget over extended operating ranges. |
| AD8604ARUZ | Narrower supply range (+2.7 V to +5.5 V), lower quiescent current (0.42 mA/ch), but only 8-MHz GBW and ±600 µV max offset. | Not suitable for 24-V industrial systems; limited to low-voltage battery-powered instrumentation. | Choose AD8604ARUZ only for portable, low-power, ≤5.5-V applications where cost outweighs precision requirements. |
Compared with OPA4197IPW, OPA4192IPW improves thermal stability without sacrificing bandwidth or output drive, while AD8604ARUZ trades voltage range and precision for ultra-low power-making OPA4197IPW the optimal balance for 24-V industrial signal chains requiring 16-bit accuracy.
Availability
OPA4197IPW is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, programmable logic controllers, and high-side current sensing applications requiring stable component supply across automotive, industrial automation, and energy metering markets.
Supply support for OPA4197IPW 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The OPAx197 family was designed specifically for high-voltage, high-precision industrial signal conditioning-emphasizing rail-to-rail operation, low drift, and robustness in electrically noisy environments.
FAQ
What is the maximum capacitive load the OPA4197IPW can drive without instability?
The OPA4197IPW is characterized to drive up to 1 nF capacitive load while maintaining phase margin >45°, as confirmed in TI's SBOS737C datasheet Figure 27–28. This capability eliminates the need for series isolation resistors when driving antialiasing filters or long PCB traces-directly supporting stable operation with ADS8864 input networks and REF3140 reference buffers. For loads exceeding 1 nF, external compensation per Figure 32 in the datasheet is recommended. The OPA4197IPW achieves this via internal compensation optimized for unity-gain stability across its full supply and temperature range.
Does the OPA4197IPW support true rail-to-rail input when powered from a single +36-V supply?
Yes, the OPA4197IPW supports rail-to-rail input common-mode voltage range from (V–) – 0.1 V to (V+) + 0.1 V, meaning it accepts input signals from 0 V to 36.1 V when V– = 0 V and V+ = +36 V. This is explicitly verified in Section 6.7 of the SBOS737C datasheet under "Common-mode voltage range." The feature enables direct interfacing with 0–36 V sensor outputs or high-side shunt monitors without external level shifting-critical for accurate 24-V system current sensing. The OPA4197IPW maintains ±100 µV offset and 120 dB CMRR across this full range.
What is the thermal resistance (RθJA) of the OPA4197IPW in its TSSOP-14 package?
The junction-to-ambient thermal resistance (RθJA) for the OPA4197IPW in the PW (TSSOP-14) package is 92.6°C/W, as specified in Section 6.6 of the SBOS737C datasheet. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pad, 1 oz Cu). With a maximum junction temperature of 150°C and ambient up to +85°C, the device supports continuous 1.3 mA per amplifier (5.2 mA total) at full 36-V supply without derating. For higher-power operation, the exposed thermal pad-though not electrically connected-should be soldered to a thermal plane to reduce RθJA by ~15°C/W.
Can the OPA4197IPW replace the OPA2197 in a dual-amplifier design without layout changes?
No, the OPA4197IPW cannot replace the OPA2197 without PCB layout changes because it uses a 14-pin TSSOP package versus the OPA2197's 8-pin SOIC or VSSOP. Pin count, spacing (0.65 mm vs 1.27 mm), and footprint dimensions (5.00 mm × 4.40 mm vs 4.90 mm × 3.90 mm) differ significantly. While both share identical electrical specs and channel independence, the OPA4197IPW's four-channel integration requires routing for six additional pins (V+, V–, and two extra I/O pairs). For drop-in replacement, the OPA2197 remains the correct dual-channel option; the OPA4197IPW is intended for space-constrained quad-channel implementations.
Is the OPA4197IPW qualified for automotive applications per AEC-Q100?
No, the OPA4197IPW is not AEC-Q100 qualified. It is specified for industrial operation from –40°C to +125°C but lacks automotive qualification testing (e.g., stress tests, failure analysis, and lot acceptance per AEC-Q100 Rev G). Texas Instruments offers the OPA4197QDGKR as the AEC-Q100 Grade 2 (–40°C to +105°C) variant in VSSOP-14 packaging. For automotive designs requiring OPA4197 functionality, the Q-grade part must be used-OPA4197IPW is restricted to industrial, medical, and test equipment applications where AEC-Q100 is not mandated.
OPA4197IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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 (x4 Channels)
- 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:
- 14-TSSOP
OPA4197IPW FAQ
1.How can I place an order for OPA4197IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4197IPW 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 OPA4197IPW reliable?
The price and inventory of OPA4197IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4197IPW is usually 5 days.
3.What payment methods are accepted for OPA4197IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4197IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4197IPW?
OPA4197IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4197IPW 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 OPA4197IPW?
For technical support, including OPA4197IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4197IPW requirements.
6.How does Aetrix verify that OPA4197IPW is sourced from the original manufacturer or authorized distributors?
All OPA4197IPW 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 OPA4197IPW meets industry standards.
7.What is the process for return or replacement of OPA4197IPW?
All OPA4197IPW units undergo pre-shipment inspection (PSI). If there is an issue with OPA4197IPW, 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 OPA4197IPW part is unused and in its original packaging.
Return procedure for OPA4197IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4197IPW 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…
