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Texas Instruments INA592IDRCT
- Part No.:
- INA592IDRCT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
INA592IDRCT.pdf
- Description:
- IC OPAMP
- Quantity:
- Payment:
- Shipping:
Inventory:405
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Product details
Overview
INA592IDRCT from Texas Instruments is a high-precision, wide-bandwidth e-trim™ difference amplifier with fixed gain options of G = 1/2 or G = 2, 40 µV maximum offset voltage, ±2 µV/°C max drift, and 2 MHz GBW. It operates from single (4.5 V to 36 V) or dual (±2.25 V to ±18 V) supplies and delivers 18 V/µs slew rate and 500 pF capacitive load drive-enabling accurate current/voltage sensing in high-voltage industrial motor control feedback loops.
For engineers reviewing the INA592IDRCT datasheet, INA592IDRCT pinout, INA592IDRCT application, or INA592IDRCT equivalent, this device supports precision differential signal conditioning in servo drives, AC inverters, power supply monitoring, and semiconductor test equipment where low drift, high CMRR (>88 dB), and rail-to-rail input common-mode range down to the negative supply are critical.
Technical Context
The INA592IDRCT integrates a precision op amp with a laser-trimmed resistor network to achieve stable gain accuracy and CMRR over temperature. Its internal topology enables operation with inputs extending to the negative rail, supporting true single-supply use cases without level-shifting circuitry.
It supports two distinct gain configurations via external pin wiring: G = 1/2 uses REF as reference and SENSE tied to output, while G = 2 configures –IN and SENSE as feedback nodes. Each mode maintains specified performance across –40°C to +125°C with no external trimming required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | G = 0.5 V/V or 2 V/V - fixed-ratio amplification without external resistors; eliminates matching errors and thermal drift in discrete networks. |
| Max Offset Voltage | 40 µV at TA = 25°C, VS = ±2.25 V to ±18 V - ensures sub-0.1% error in 10-V full-scale measurements before calibration. |
| Offset Drift | ±2 µV/°C max - limits total offset shift to ≤240 µV over –40°C to +125°C operating range. |
| CMRR | 88 dB min (G = 1/2), 82 dB min (G = 2) - rejects >99.98% of common-mode interference in noisy industrial environments. |
| Small-Signal Bandwidth | 2 MHz (G = 1/2), 0.8 MHz (G = 2) - supports fast transient response in closed-loop position feedback systems up to ~300 kHz. |
| Slew Rate | 18 V/µs - enables full-scale step response in <1 µs, critical for accurate pulse-width modulated (PWM) current sensing. |
| Capacitive Load Drive | 500 pF - allows direct connection to ADC input filters or long PCB traces without stability compensation. |
| Supply Range | Single: 4.5 V to 36 V; Dual: ±2.25 V to ±18 V - compatible with 24-V industrial rails and legacy ±15-V systems. |
Pinout & Package
INA592IDRCT is housed in a 10-pin VSON package (3.0 mm × 3.0 mm, 0.5-mm pitch) with exposed thermal pad for enhanced power dissipation. Pinout matches DRC variant per TI SBOS914F datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +INOP | Direct noninverting op-amp input | Used for direct sensor connection in G = 2 configuration; bypasses internal resistor network for ultra-low input bias impact. |
| –INOP | Direct inverting op-amp input | Enables high-impedance differential input path when external gain-setting is required beyond factory-configured options. |
| +IN | 12-kΩ resistor to noninverting input | Positive input node in G = 1/2 mode; reference node in G = 2 mode - defines gain topology via pin strapping. |
| –IN | 12-kΩ resistor to inverting input | Negative input node in G = 1/2 mode; feedback node in G = 2 mode - determines closed-loop configuration. |
| REF | 6-kΩ resistor to noninverting input | Reference point in G = 1/2 (grounded); positive input in G = 2 - sets common-mode baseline for differential measurement. |
| SENSE | 6-kΩ resistor to inverting input | Feedback node in G = 1/2 (tied to OUT); negative input in G = 2 - completes precision resistor ratio for gain accuracy. |
| OUT | Amplifier output | Low-impedance buffered output capable of driving 10-kΩ loads and ≥500-pF capacitance without oscillation. |
| V+ | Positive supply | Highest potential rail; supports up to +36 V in single-supply operation or +18 V in dual-supply mode. |
| V– | Negative supply | Lowest potential rail; extends to ground in single-supply use, enabling true rail-to-rail input common-mode range. |
| NC | No connection | Internally unconnected pin; must be left floating or tied to ground per layout best practices to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ laser trimming | Guarantees initial gain error ≤±0.03% and offset ≤40 µV without post-manufacture calibration. |
| Rail-to-rail input common-mode range | Extends to V–, enabling direct sensing of shunt voltages referenced to ground in high-side current monitoring. |
| High capacitive load drive (500 pF) | Eliminates need for isolation buffers when interfacing with anti-aliasing filters or long trace runs to ADCs. |
| Wide temperature range (–40°C to +125°C) | Validated performance across automotive under-hood and industrial motor drive environments without derating. |
| Low quiescent current (1.1 mA) | Supports always-on condition monitoring in energy-sensitive applications without compromising bandwidth or precision. |
| Dual gain configuration (G = 1/2 or 2) | Configurable via pin wiring - avoids BOM proliferation and simplifies design reuse across multiple signal ranges. |
Applications
| AC Drive Position Feedback | Servo Drive Position Feedback |
|---|---|
Use Scenario: High-resolution rotor position sensing using resolver or encoder analog outputs in variable-frequency drives. IC Role / Device Role / Timing Role: Difference amplifier conditioning differential sine/cosine signals prior to ADC sampling. Use Value: 2 MHz bandwidth and 18 V/µs slew rate preserve phase integrity of 100-kHz resolver signals; 40 µV offset ensures <0.01° angular error at full scale. |
Use Scenario: Closed-loop current sensing in brushless DC servo amplifiers with PWM switching noise. IC Role / Device Role / Timing Role: High-CMRR front-end amplifier for shunt-based motor phase current measurement. Use Value: 88 dB CMRR rejects >99.98% of 20-kHz PWM common-mode transients; 500 pF drive capability interfaces directly with ΣΔ ADC input filters. |
| Condition Monitoring Module (Voltage/Current) | Power Supply Module |
Use Scenario: Real-time voltage and current telemetry in predictive maintenance edge nodes for industrial machinery. IC Role / Device Role / Timing Role: Precision differential amplifier for isolated bus voltage and shunt current sensing. Use Value: ±2 µV/°C drift ensures stable calibration over ambient temperature swings; single-supply 4.5–36 V operation matches 24-V system rails. |
Use Scenario: Output voltage/current monitoring in programmable lab power supplies and telecom rectifiers. IC Role / Device Role / Timing Role: Feedback path amplifier for digital control loop sensing of regulated output. Use Value: G = 1/2 configuration scales high-voltage outputs (e.g., 0–60 V) to 0–30 V for 16-bit ADC input; 1.1 mA IQ minimizes standby power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA159IDR | G = 0.2 V/V only; higher offset (75 µV max); narrower bandwidth (1.2 MHz). | Optimized for ±10-V to 3-V/5-V conversion; less suitable for high-speed motor feedback. | Select when fixed 0.2× attenuation is required and speed is secondary to cost. |
| INA137UA | G = 0.5 or 2 V/V; audio-grade THD+N (0.0005%); lower CMRR (80 dB min); no e-trim™. | Designed for line-level audio differential receivers; not qualified for industrial temperature range. | Choose for audio signal chains where precision DC specs are relaxed and extended temp rating is unnecessary. |
Compared with INA159IDR and INA137UA, the INA592IDRCT provides superior offset stability (±2 µV/°C vs ±5 µV/°C), wider industrial temperature support (–40°C to +125°C), and guaranteed 500-pF drive - making it the preferred choice for high-reliability motor control and power electronics monitoring where long-term calibration stability is mandatory.
Availability
INA592IDRCT is available at Aetrix Electronics and suitable for AC drive position feedback, servo drive position feedback, and condition monitoring modules requiring stable component supply across extended temperature and high-noise environments.
Supply support for INA592IDRCT 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 INA592IDRCT belongs to TI's e-trim™ precision amplifier product line, engineered specifically for high-voltage industrial sensing applications demanding low drift, high CMRR, and robust capacitive load drive without external compensation.
FAQ
What gain configurations does the INA592IDRCT support?
The INA592IDRCT supports two factory-configured gain options: G = 1/2 and G = 2. These are selected by external pin wiring - not internal registers - and both modes are fully characterized across temperature and supply voltage. The INA592IDRCT achieves ±0.03% max gain error in either configuration, eliminating the need for external resistor networks or post-assembly calibration.
Does the INA592IDRCT require external trimming or calibration?
No, the INA592IDRCT uses Texas Instruments' e-trim™ laser trimming technology to achieve guaranteed specifications out-of-box: 40 µV max offset voltage, ±2 µV/°C max drift, and ±0.03% max gain error. This eliminates production-line trimming steps and ensures consistent performance across units and over time without recalibration.
Can the INA592IDRCT operate from a single 24-V supply?
Yes, the INA592IDRCT supports single-supply operation from 4.5 V to 36 V. With a 24-V rail, it delivers full performance: 2 MHz bandwidth (G = 1/2), 18 V/µs slew rate, and input common-mode range extending to the negative rail (0 V). This makes the INA592IDRCT ideal for industrial 24-V systems such as PLC I/O modules and motor drives.
What is the maximum capacitive load the INA592IDRCT can drive stably?
The INA592IDRCT is specified to drive up to 500 pF capacitively without external compensation or stability degradation. This capability allows direct interface with anti-aliasing RC filters, long PCB traces, or ADC input capacitance - reducing bill-of-materials count and layout complexity compared to amplifiers requiring isolation buffers.
How does the INA592IDRCT handle common-mode noise in motor drive applications?
The INA592IDRCT provides minimum 88 dB CMRR at G = 1/2 and 82 dB at G = 2, rejecting >99.98% of common-mode interference. Its architecture maintains CMRR over frequency and temperature, and its rail-to-rail input common-mode range (down to V–) enables accurate sensing in high-side shunt configurations where PWM noise couples strongly into the measurement path - a key advantage of the INA592IDRCT in inverter leg current monitoring.
INA592IDRCT 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)
INA592IDRCT FAQ
1.How can I place an order for INA592IDRCT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA592IDRCT 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 INA592IDRCT reliable?
The price and inventory of INA592IDRCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA592IDRCT is usually 5 days.
3.What payment methods are accepted for INA592IDRCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA592IDRCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA592IDRCT?
INA592IDRCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA592IDRCT 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 INA592IDRCT?
For technical support, including INA592IDRCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA592IDRCT requirements.
6.How does Aetrix verify that INA592IDRCT is sourced from the original manufacturer or authorized distributors?
All INA592IDRCT 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 INA592IDRCT meets industry standards.
7.What is the process for return or replacement of INA592IDRCT?
All INA592IDRCT units undergo pre-shipment inspection (PSI). If there is an issue with INA592IDRCT, 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 INA592IDRCT part is unused and in its original packaging.
Return procedure for INA592IDRCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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