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Texas Instruments INA597IDRCT
- Part No.:
- INA597IDRCT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
INA597IDRCT.pdf
- Description:
- IC OPAMP
- Quantity:
- Payment:
- Shipping:
Inventory:489
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Product details
Overview
INA597IDRCT from Texas Instruments is a high-precision, wide-bandwidth e-trim™ difference amplifier in a 10-pin VSON package with thermal pad. It delivers 2-MHz gain-bandwidth, ±5 μV/°C max offset drift, 18 nV/√Hz noise at 1 kHz, and operates from ±2.25 V to ±18 V dual supply or 4.5 V to 36 V single supply. It serves as a precision front-end signal conditioner in industrial voltage sensing and position feedback systems.
For engineers reviewing the INA597IDRCT datasheet, INA597IDRCT pinout, INA597IDRCT application, or INA597IDRCT equivalent, this page provides verified pin functions, real-world use cases in flow transmitters and servo drives, confirmed G = 1/2 and G = 2 configurations, and validated alternative parts for cost- or performance-sensitive designs.
Technical Context
The INA597IDRCT integrates a precision op amp with a laser-trimmed 6-kΩ/12-kΩ resistor network to achieve ±0.03% max gain error and 88 dB min CMRR over temperature. Its internal architecture supports two fixed gain modes (G = 1/2 and G = 2) via external REF and SENSE pin routing, eliminating need for external precision resistors.
It features rail-to-rail output swing within 130–220 mV of rails, 18 V/μs slew rate, and stable operation driving up to 500 pF capacitive loads-enabling direct interface with ADC inputs and long PCB traces without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | G = 0.5 V/V or 2 V/V - fixed, resistor-network-based gains requiring no external components |
| Offset Voltage (max) | ±400 µV at G = 2 - ensures ≤0.4 mV input-referred error in high-gain sensor conditioning |
| CMRR (min) | 82 dB at G = 2 - rejects >12× common-mode interference in noisy motor drive environments |
| Bandwidth | 2 MHz at G = 1/2 - supports fast transient response in AC drive current sensing |
| Supply Range | ±2.25 V to ±18 V or 4.5 V to 36 V - compatible with industrial 24-V systems and bipolar analog rails |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and factory-floor industrial use |
| Quiescent Current | 1.1 mA - enables low-power DAQ modules without sacrificing bandwidth or precision |
Pinout & Package
INA597IDRCT uses a 10-pin VSON package (3.00 mm × 3.00 mm) with exposed thermal pad for enhanced power dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–INOP) | Direct inverting op amp input | Enables custom feedback paths or instrumentation amplifier configurations beyond fixed gain |
| 2 (REF) | Reference input (G = 1/2) / positive input (G = 2) | Configures gain mode; ties to ground for G = 1/2, connects to signal source for G = 2 |
| 3 (–IN) | Inverting input via 12-kΩ resistor | Primary negative differential input terminal in G = 1/2 mode |
| 4 (+IN) | Noninverting input via 12-kΩ resistor | Primary positive differential input terminal in G = 1/2 mode |
| 5 (V–) | Negative supply rail | Supports dual-supply operation down to ±2.25 V; extends to negative rail for single-supply use |
| 6 (SENSE) | Sense input (G = 1/2) / negative input (G = 2) | Closes feedback loop internally in G = 1/2; becomes signal input in G = 2 configuration |
| 7 (OUT) | Amplified output | Rail-to-rail capable with 130–220 mV headroom; drives 10-kΩ loads and 500-pF capacitance |
| 8 (V+) | Positive supply rail | Accepts up to 36 V single supply or ±18 V dual supply; powers internal op amp and resistor network |
| 9 (NC) | No connection | Internally unconnected; may be left floating or tied to ground for mechanical stability |
| 10 (+INOP) | Direct noninverting op amp input | Provides access to raw op amp input for hybrid architectures or external gain control |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ resistor network | Laser-trimmed 6-kΩ/12-kΩ ratios ensure ±0.03% gain accuracy and <1 ppm/°C drift without external calibration |
| High capacitive load drive | Stable with up to 500 pF - eliminates need for isolation resistors when interfacing with ADC input capacitors |
| Wide common-mode range | Extends to V– - enables true single-supply operation with inputs referenced to ground in 24-V systems |
| Low 1/f noise | 3 µVpp (0.1–10 Hz, G = 1/2) - critical for precision DC-coupled measurements in asset tracking sensors |
| Thermal pad package | VSON-10 with exposed pad - reduces θJA to 47.4°C/W, enabling 1.2 mA operation at 125°C ambient without derating |
Applications
| Flow Transmitter | AC Drive Position Feedback |
|---|---|
Use Scenario: Measures differential pressure across an orifice plate to compute fluid flow rate in industrial pipelines. IC Role / Device Role / Timing Role: Difference amplifier converting millivolt-level bridge output into robust 0–10 V or 4–20 mA transmitter input. Use Value: 88 dB CMRR rejects EMI from nearby VFDs; ±5 μV/°C drift ensures <0.1% full-scale error over –40°C to +85°C operating range. | Use Scenario: Conditions analog resolver or encoder signals in variable-frequency AC motor drives for closed-loop speed and torque control. IC Role / Device Role / Timing Role: Precision front-end amplifier scaling and offsetting resolver sine/cosine outputs before ADC sampling. Use Value: 2-MHz GBW supports 20-kHz resolver excitation frequencies; 18 V/μs slew rate preserves phase integrity during rapid load transients. |
| Servo Drive Position Feedback | Voltage Conditioning Module |
Use Scenario: Interfaces with high-resolution optical encoders in robotic joint actuators requiring sub-micron positioning accuracy. IC Role / Device Role / Timing Role: Low-noise signal conditioner amplifying encoder differential outputs prior to interpolation ASICs. Use Value: 18 nV/√Hz noise floor maintains SNR > 80 dB at 1 kHz; 500-pF drive capability eliminates buffer stage in space-constrained servo PCBs. | Use Scenario: Isolates and scales high-voltage bus measurements (e.g., 400-V DC link) for microcontroller ADC monitoring in power supply modules. IC Role / Device Role / Timing Role: High-common-mode difference amplifier rejecting switching noise while delivering accurate scaled output. Use Value: 36-V absolute max supply rating allows direct connection to 24-V auxiliary rails; 82 dB CMRR suppresses 100-kHz PWM noise by >12×. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA592IDRCT | Same pinout, identical G = 1/2 and G = 2 modes, but ±25 µV max offset (vs. ±400 µV for INA597IDRCT at G = 2) | Better DC precision for ultra-low-drift DAQ; higher cost and same bandwidth | Select INA592IDRCT when offset-critical applications demand <0.025% gain error at 25°C |
| INA137UA | Audio-grade difference amplifier with G = 1/2 or 2, ±1000 µV offset, 1.5-MHz bandwidth, no e-trim™ | Lower cost, wider temp range (–55°C to +125°C), but higher noise (25 nV/√Hz) and lower CMRR (70 dB) | Choose INA137UA for non-precision industrial monitoring where budget constraints outweigh drift requirements |
Compared with INA597IDRCT, INA592IDRCT offers superior DC accuracy at higher cost, while INA137UA trades precision for cost and ruggedness-making INA597IDRCT the optimal balance of bandwidth, drift, and price for industrial voltage sensing.
Availability
INA597IDRCT is available at Aetrix Electronics and suitable for flow transmitter design, AC drive position feedback, and voltage conditioning module development requiring stable component supply and guaranteed long-term manufacturability.
Supply support for INA597IDRCT 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 specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain solutions.
The INA597IDRCT belongs to TI's e-trim™ precision amplifier family, engineered for industrial and automotive applications demanding high DC accuracy, wide bandwidth, and robust operation in harsh electrical environments.
FAQ
What gain configurations does the INA597IDRCT support?
The INA597IDRCT supports two fixed gain configurations: G = 0.5 V/V and G = 2 V/V. These are implemented using its internal laser-trimmed resistor network. Gain selection is determined by how the REF and SENSE pins are connected-no external resistors are required. The INA597IDRCT datasheet specifies distinct electrical characteristics for each mode, including different bandwidth (2 MHz at G = 1/2, 0.8 MHz at G = 2) and offset voltage limits (±200 µV max at G = 1/2, ±400 µV max at G = 2).
Does the INA597IDRCT require external compensation capacitors?
No, the INA597IDRCT is internally compensated and stable with capacitive loads up to 500 pF without external compensation. This eliminates the need for series isolation resistors or external capacitors when driving ADC inputs or long traces. The device's stability is verified across both gain modes and supply voltages, as confirmed in the INA597IDRCT datasheet Figure 7-49 and Figure 7-50 small-signal overshoot plots.
Can the INA597IDRCT operate from a single 5-V supply?
Yes, the INA597IDRCT supports single-supply operation from 4.5 V to 36 V. At 5 V, it maintains full functionality with common-mode input range extending to the negative rail (0 V) and output swing within 130–220 mV of both rails. The INA597IDRCT's internal op amp architecture enables true single-supply use in low-voltage DAQ modules, as validated in the "Recommended Operating Conditions" table (Section 7.3) and Figure 7-69/7-70 of the datasheet.
What is the thermal performance of the INA597IDRCT in its VSON-10 package?
The INA597IDRCT in the DRC (VSON-10) package has a junction-to-ambient thermal resistance (RθJA) of 47.4°C/W and junction-to-board (RθJB) of 21.0°C/W, per Section 7.4 of the datasheet. Its exposed thermal pad significantly improves heat dissipation compared to SOIC or VSSOP variants. At 1.2 mA quiescent current and 125°C ambient, the junction temperature remains within safe limits-enabling reliable operation in sealed industrial enclosures without forced airflow.
How does the INA597IDRCT handle overload recovery?
The INA597IDRCT recovers from output overload in 200 ns, as specified in both G = 1/2 and G = 2 electrical characteristics tables (Sections 7.5 and 7.6). This fast recovery time prevents signal distortion during transient events such as short-circuit detection in motor drives or resolver signal glitches. The INA597IDRCT achieves this via optimized internal compensation and output stage design, ensuring minimal dead time in closed-loop control systems.
INA597IDRCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Differential
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 18V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 800 kHz
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 28 µV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
INA597IDRCT FAQ
1.How can I place an order for INA597IDRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA597IDRCT 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 INA597IDRCT reliable?
The price and inventory of INA597IDRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA597IDRCT is usually 5 days.
3.What payment methods are accepted for INA597IDRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA597IDRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA597IDRCT?
INA597IDRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA597IDRCT 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 INA597IDRCT?
For technical support, including INA597IDRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA597IDRCT requirements.
6.How does Aetrix verify that INA597IDRCT is sourced from the original manufacturer or authorized distributors?
All INA597IDRCT 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 INA597IDRCT meets industry standards.
7.What is the process for return or replacement of INA597IDRCT?
All INA597IDRCT units undergo pre-shipment inspection (PSI). If there is an issue with INA597IDRCT, 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 INA597IDRCT part is unused and in its original packaging.
Return procedure for INA597IDRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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