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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments OPA4197ID

Name: OPA4197ID
Brand: Texas Instruments
SKU: OPA4197ID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: OPA4197ID

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: OPA4197ID.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

OPA4197ID 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 high-accuracy sensor signal conditioning in multiplexed ADC front-ends, PLC analog I/O modules, and high-side current sensing circuits.

For engineers reviewing the OPA4197ID datasheet, OPA4197ID pinout, OPA4197ID application, or OPA4197ID equivalent, key selection considerations include its rail-to-rail input/output swing across ±2.25 V to ±18 V supplies, differential input voltage range extending to the supply rails, EMI-filtered inputs, and robust 1 nF capacitive load drive capability in TSSOP-14 and SOIC-14 packages.

Technical Context

The OPA4197ID implements a precision bipolar-input op amp architecture with matched transistor pairs enabling low offset drift (±2.5 µV/°C max) and high common-mode rejection (120 dB min). Its input stage supports common-mode voltages from (V–) – 0.1 V to (V+) + 0.1 V, including operation at the positive rail-a critical feature for high-side sensing and reference buffering.

Each of the four amplifiers provides independent 10-MHz unity-gain bandwidth and 20 V/µs slew rate under ±18 V supply, with thermal protection activating at 140°C junction temperature. The device maintains stable operation driving up to 1 nF capacitive loads without external compensation, enabled by internal compensation and high output current (±65 mA).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	±2.25 V to ±18 V (or +4.5 V to +36 V single supply)-supports wide industrial power rails including ±15 V and +24 V systems.
Input Offset Voltage	±100 µV maximum-ensures sub-0.01% gain error in precision instrumentation and 16-bit+ ADC driver applications.
Gain-Bandwidth Product	10 MHz-enables stable closed-loop operation up to ~100 kHz at G = 100, suitable for anti-aliasing filter interfaces.
Slew Rate	20 V/µs-supports fast settling (1.4 µs to 0.01%) for 10-V step signals, critical in multiplexed data acquisition timing.
Output Drive	±65 mA short-circuit current-drives low-impedance loads (e.g., 2-kΩ RLOAD) with <500 mV headroom to rails.
Capacitive Load Drive	Up to 1 nF-eliminates need for isolation resistors when driving ADC input capacitance or long PCB traces.
Common-Mode Range	(V–) – 0.1 V to (V+) + 0.1 V-allows direct connection to high-side shunt monitors and rail-referenced sensors.

Pinout & Package

OPA4197ID is available in 14-pin SOIC (D) and TSSOP (PW) packages. Both variants share identical pin functions and 0.65-mm lead pitch. The SOIC-14 body size is 8.65 mm × 3.90 mm; TSSOP-14 is 5.00 mm × 4.40 mm.

Pin/Terminal	Circuit Role	Design Meaning
+IN A (Pin 3)	Noninverting input, Channel A	High-impedance node (10¹³ Ω \|\| 6.4 pF) accepting rail-to-rail common-mode signals.
–IN A (Pin 2)	Inverting input, Channel A	Differential input pair node; supports full supply-rail differential voltage range.
OUT A (Pin 1)	Output, Channel A	Class-AB output stage delivering ±65 mA, rail-to-rail swing, and 1 nF capacitive load stability.
+IN B (Pin 5)	Noninverting input, Channel B	Independent high-Z input for second signal path-no crosstalk with Channel A per datasheet testing.
–IN B (Pin 6)	Inverting input, Channel B	Matched to Channel A inputs for consistent offset and drift performance across all four channels.
OUT B (Pin 7)	Output, Channel B	Identical drive strength and settling behavior as OUT A; enables dual-channel simultaneous sampling.
+IN C (Pin 10)	Noninverting input, Channel C	Third channel input; validated for same CMRR (120 dB min) and noise (5.5 nV/√Hz) as Channels A/B.
–IN C (Pin 9)	Inverting input, Channel C	Supports same input bias current (±5 pA typ) and offset voltage specs as other channels.
OUT C (Pin 8)	Output, Channel C	Delivers full 20 V/µs slew rate and 10-MHz GBW under same thermal limits (140°C shutdown).
+IN D (Pin 12)	Noninverting input, Channel D	Fourth channel input; shares identical EMI/RFI filtering and input protection structure.
–IN D (Pin 13)	Inverting input, Channel D	Validated for ±100 µV max offset and ±2.5 µV/°C drift across –40°C to +125°C operating range.
OUT D (Pin 14)	Output, Channel D	Final output stage; maintains <0.00008% THD+N at 1 kHz, enabling high-fidelity signal reconstruction.
V+ (Pin 4)	Positive supply	Highest potential supply rail; accepts up to +36 V (single) or +18 V (dual); powers all four amplifiers.
V– (Pin 11)	Negative supply	Lowest potential supply rail; accepts down to –18 V (dual) or ground (single); shared across all channels.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables direct interfacing with 0–5 V, 0–10 V, or ±10 V sensor outputs and ADC references without level-shifting.
Differential input voltage range to supply rail	Allows high-side current sensing with shunt connected between V+ and load-no external level translation needed.
EMI- and RFI-filtered inputs	Reduces susceptibility to 400 MHz–2.5 GHz wireless interference in industrial environments with switching power supplies.
1 nF capacitive load drive	Permits direct connection to SAR ADC input capacitors (typically 10–30 pF) and long trace routing without instability.
±65 mA output current	Drives 2-kΩ loads within 500 mV of rails, supporting active filtering, reference buffering, and transducer excitation.
Thermal protection	Automatically disables output above 140°C junction temperature-prevents latch-up and ensures system-level safety.

Applications

Multiplexed Data-Acquisition Systems	High-Resolution ADC Driver Amplifiers
Use Scenario: 16-channel, 18-bit SAR ADC system with analog multiplexer selecting thermocouple, RTD, and bridge sensor inputs. IC Role / Device Role / Timing Role: Quad OPA4197ID buffers and conditions each 4-channel group before mux; provides anti-aliasing filtering and gain. Use Value: 10-MHz GBW and 20 V/µs slew rate ensure <1.4 µs settling to 0.01%, matching ADC conversion time and minimizing channel skew.	Use Scenario: Driving ADS8864 16-bit, 100-kSPS SAR ADC in test equipment requiring <0.001% linearity. IC Role / Device Role / Timing Role: Single-channel OPA4197ID configured as unity-gain buffer between precision voltage reference and ADC REF pin. Use Value: ±100 µV max offset and 120 dB CMRR prevent reference corruption, preserving ADC effective resolution over temperature.
SAR ADC Reference Buffers	High-Side and Low-Side Current Sensing
Use Scenario: REF3140 4.096-V reference used with multiple SAR ADCs in programmable logic controller (PLC) backplane. IC Role / Device Role / Timing Role: One OPA4197ID channel buffers REF3140 output to drive multiple ADC reference inputs simultaneously. Use Value: Low 1 mA quiescent current per amplifier and 1 nF drive capability eliminate need for external decoupling, reducing BOM count.	Use Scenario: Bidirectional 30-A motor phase current monitoring using 5-mΩ shunt resistor in 24-V DC bus. IC Role / Device Role / Timing Role: OPA4197ID configured as difference amplifier on high-side shunt; rejects common-mode voltage up to 24 V. Use Value: Rail-to-rail input extends to V+, enabling direct measurement at 24 V common-mode without attenuators or isolated supplies.

Multiplexed Data-Acquisition Systems

High-Resolution ADC Driver Amplifiers

Use Scenario: 16-channel, 18-bit SAR ADC system with analog multiplexer selecting thermocouple, RTD, and bridge sensor inputs.

IC Role / Device Role / Timing Role: Quad OPA4197ID buffers and conditions each 4-channel group before mux; provides anti-aliasing filtering and gain.

Use Value: 10-MHz GBW and 20 V/µs slew rate ensure <1.4 µs settling to 0.01%, matching ADC conversion time and minimizing channel skew.

Use Scenario: Driving ADS8864 16-bit, 100-kSPS SAR ADC in test equipment requiring <0.001% linearity.

IC Role / Device Role / Timing Role: Single-channel OPA4197ID configured as unity-gain buffer between precision voltage reference and ADC REF pin.

Use Value: ±100 µV max offset and 120 dB CMRR prevent reference corruption, preserving ADC effective resolution over temperature.

SAR ADC Reference Buffers

High-Side and Low-Side Current Sensing

Use Scenario: REF3140 4.096-V reference used with multiple SAR ADCs in programmable logic controller (PLC) backplane.

IC Role / Device Role / Timing Role: One OPA4197ID channel buffers REF3140 output to drive multiple ADC reference inputs simultaneously.

Use Value: Low 1 mA quiescent current per amplifier and 1 nF drive capability eliminate need for external decoupling, reducing BOM count.

Use Scenario: Bidirectional 30-A motor phase current monitoring using 5-mΩ shunt resistor in 24-V DC bus.

IC Role / Device Role / Timing Role: OPA4197ID configured as difference amplifier on high-side shunt; rejects common-mode voltage up to 24 V.

Use Value: Rail-to-rail input extends to V+, enabling direct measurement at 24 V common-mode without attenuators or isolated supplies.

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 typ vs ±2.5 µV/°C max), higher CMRR (140 dB min), but 5.5-MHz GBW and 2.5 V/µs slew rate.	Better for ultra-stable DC measurements (e.g., weigh scales); insufficient for fast-settling multiplexed DAQ requiring 10-MHz bandwidth.	Select OPA4192IPW only when drift dominates over speed; OPA4197ID preferred for mixed-signal timing-critical systems.
AD8604ARUZ	Lower supply range (±2.5 V to ±6 V), 8-MHz GBW, ±150 µV max offset, no rail-to-rail input beyond (V–) + 1.2 V.	Limited to low-voltage portable instrumentation; incompatible with 24-V industrial rails or high-side sensing above 6 V.	Use AD8604ARUZ only in battery-powered, low-voltage designs; OPA4197ID required for industrial 24-V/±15-V systems.

Compared with OPA4192IPW and AD8604ARUZ, the OPA4197ID uniquely balances 10-MHz bandwidth, rail-to-rail input at full 36-V supply, and ±100 µV offset-making it the only quad op amp qualified for high-voltage, high-speed, high-precision industrial signal chains without trade-offs in supply range or settling performance.

Availability

OPA4197ID is available at Aetrix Electronics and suitable for multiplexed data-acquisition systems, high-resolution ADC driver amplifiers, and high-side current sensing applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for OPA4197ID 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, designing and manufacturing analog ICs, embedded processors, and digital signal processors for industrial, automotive, and communications markets.

The OPA4197ID belongs to TI's precision op amp product line, engineered specifically for high-voltage industrial signal conditioning where rail-to-rail operation, low drift, and robust capacitive load drive are mandatory in PLCs, test equipment, and sensor interfaces.

FAQ

What is the maximum supply voltage for OPA4197ID?

The OPA4197ID supports dual-supply operation up to ±18 V or single-supply operation up to +36 V. Absolute maximum ratings specify ±20 V dual supply or 40 V single supply, but functional operation is guaranteed only within the recommended range of ±2.25 V to ±18 V (or +4.5 V to +36 V). Exceeding these limits risks permanent damage or degraded parametric performance.

Does OPA4197ID support rail-to-rail input at the positive supply rail?

Yes, the OPA4197ID features true rail-to-rail input operation with a common-mode voltage range extending from (V–) – 0.1 V to (V+) + 0.1 V. This allows direct connection to high-side shunt resistors referenced to V+, eliminating the need for level-shifting circuitry in 24-V industrial current sensing applications using the OPA4197ID.

Can OPA4197ID drive a 1-nF capacitive load without oscillation?

Yes, the OPA4197ID is explicitly characterized and specified to drive up to 1 nF capacitive loads stably without external compensation. This capability is verified across temperature and supply conditions in the datasheet's Typical Characteristics section (Figure 27–28), making the OPA4197ID suitable for direct interface with SAR ADC input capacitance and long PCB traces.

What is the thermal shutdown threshold for OPA4197ID?

The OPA4197ID incorporates internal thermal protection that activates at a junction temperature of 140°C. When triggered, the output stage disables to prevent damage; normal operation resumes once the die cools below the hysteresis threshold. This feature is documented in Section 6.7 and 6.8 of the OPA4197ID datasheet under "Temperature" specifications.

Is OPA4197ID pin-compatible with other devices in the OPAx197 family?

No-OPA4197ID uses a 14-pin SOIC or TSSOP package with dedicated pins for four independent amplifiers (+IN/–IN/OUT per channel), while OPA197 (SOIC-8/SOT-5/VSSOP-8) and OPA2197 (SOIC-8/VSSOP-8) use 8-pin layouts. Pin mapping, pin count, and channel count differ; board redesign is required when substituting between OPA197, OPA2197, and OPA4197ID.

OPA4197ID Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm 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-SOIC

OPA4197ID FAQ

1.How can I place an order for OPA4197ID through Aetrix?

Please submit a Request for Quotation (RFQ) for OPA4197ID 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 OPA4197ID reliable?

The price and inventory of OPA4197ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4197ID is usually 5 days.

3.What payment methods are accepted for OPA4197ID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4197ID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for OPA4197ID?

OPA4197ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your OPA4197ID 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 OPA4197ID?

For technical support, including OPA4197ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4197ID requirements.

6.How does Aetrix verify that OPA4197ID is sourced from the original manufacturer or authorized distributors?

All OPA4197ID 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 OPA4197ID meets industry standards.

7.What is the process for return or replacement of OPA4197ID?

All OPA4197ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA4197ID, 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 OPA4197ID part is unused and in its original packaging.

Return procedure for OPA4197ID:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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