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Texas Instruments INA592IDR
- Part No.:
- INA592IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA592IDR.pdf
- Description:
- IC OPAMP DIFF 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,152
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Product details
Overview
INA592IDR 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 at G = 1/2. 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 INA592IDR datasheet, INA592IDR pinout, INA592IDR application, or INA592IDR equivalent, key selection considerations include guaranteed offset and drift specs over –40°C to +125°C, CMRR ≥88 dB (min), input common-mode range extending to negative rail, and validated performance across both gain configurations without external precision resistors.
Technical Context
The INA592IDR integrates a precision op amp with a laser-trimmed, matched thin-film resistor network enabling stable gain accuracy and CMRR over temperature. Its internal topology supports two distinct operational modes: G = 1/2 (differential input → attenuated output) and G = 2 (instrumentation-style differential input → amplified output), each with dedicated pin assignments for REF, SENSE, and ±IN terminals.
Unlike discrete resistor-based difference amplifiers, the INA592IDR achieves <±0.03% gain error and maintains >82 dB CMRR across its full –40°C to +125°C operating range due to matched TCR of on-die resistors. The device's rail-to-rail output stage and high slew rate support fast transient response in closed-loop position feedback systems driving ADCs with 16-bit resolution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Options | G = 1/2 or G = 2 - fixed, factory-trimmed; no external gain-setting components required |
| Max Offset Voltage | 40 μV (G = 1/2) - ensures ≤0.4 mV error at 10 V output, critical for sub-0.1% measurement accuracy |
| Offset Drift | ±2 μV/°C (max) - limits thermal-induced error to <240 μV over 120°C ambient swing |
| CMRR | 88 dB (min, G = 1/2) - rejects >25 kV/V of common-mode interference in noisy motor drive environments |
| Small-Signal Bandwidth | 2 MHz (G = 1/2), 0.8 MHz (G = 2) - supports sampling of fast current transients up to 200 kHz with <0.1% gain error |
| Supply Range | Single: 4.5 V to 36 V; Dual: ±2.25 V to ±18 V - compatible with 24 V industrial rails and isolated ±15 V analog sections |
| Capacitive Load Drive | 500 pF - directly drives ADC input filters or long PCB traces without stability compensation |
Pinout & Package
INA592IDR is packaged in an 8-pin SOIC (D) with body size 4.90 mm × 3.91 mm. Pin functions are defined per TI SBOS914F Rev F and validated for this specific orderable variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Input (G = 1/2) | Positive differential input node; connected to 12-kΩ resistor to op amp noninverting terminal |
| –IN | Input (G = 1/2) | Negative differential input node; connected to 12-kΩ resistor to op amp inverting terminal |
| REF | Reference (G = 1/2) | 6-kΩ resistor to op amp noninverting terminal; used as reference point for G = 1/2 configuration |
| SENSE | Feedback (G = 1/2) | 6-kΩ resistor to op amp inverting terminal; connects to output to close G = 1/2 loop |
| V± | Power | Supply pins: V+ (pin 7), V– (pin 4); supports single- or dual-supply operation |
| OUT | Output | Analog output; rail-to-rail capable with 18 V/μs slew rate and ±65 mA short-circuit current |
| NC | No Connect | Pin 8 has no internal connection; must be left floating or grounded (no impact on operation) |
Key Features
| Feature | Design Value |
|---|---|
| e-trim™ resistor network | Laser-trimmed thin-film resistors with matched TCR ensure <±0.03% gain error and stable CMRR over temperature |
| Rail-to-rail output stage | Delivers full dynamic range into 10 kΩ loads; output swings within 170 mV of rails at ±15 V supply |
| High capacitive load drive | Stable operation with up to 500 pF load enables direct interface to anti-aliasing filters and ADC inputs |
| Extended common-mode range | Inputs operate down to V– (negative rail), supporting single-supply sensing of ground-referenced shunt voltages |
| Low quiescent current | 1.1 mA per amplifier allows use in power-constrained condition monitoring modules without thermal penalty |
Applications
| AC Drive Position Feedback | Servo Drive Position Feedback |
|---|---|
Use Scenario: High-voltage AC inverter drives require precise phase current measurement for field-oriented control (FOC) using shunt resistors placed on low-side or high-side legs. IC Role / Device Role / Timing Role: INA592IDR acts as a high-CMRR difference amplifier converting shunt voltage to ground-referenced signal for ADC sampling. Use Value: 88 dB CMRR and 40 μV offset enable <0.1% current measurement accuracy despite 300 V common-mode transients during IGBT switching. |
Use Scenario: Servo motor controllers monitor motor winding currents to maintain torque accuracy and prevent overcurrent faults during rapid acceleration/deceleration. IC Role / Device Role / Timing Role: INA592IDR conditions bidirectional shunt voltage signals with fast settling (<1.3 µs to 0.01%) for real-time current loop closure. Use Value: 18 V/μs slew rate and 2 MHz bandwidth preserve signal fidelity of 100 kHz current harmonics critical for smooth motion control. |
| Condition Monitoring Module | Power Supply Module |
Use Scenario: Industrial predictive maintenance units measure voltage and current on rotating equipment to detect bearing wear, insulation degradation, or imbalance. IC Role / Device Role / Timing Role: INA592IDR provides isolated, high-accuracy analog front-end for multi-channel voltage/current acquisition with shared reference architecture. Use Value: Dual gain options (G = 1/2 for high-voltage bus sensing, G = 2 for low-level shunt signals) reduce BOM count and layout complexity. |
Use Scenario: Programmable lab or industrial power supplies require precise output voltage and current monitoring for regulation and protection logic. IC Role / Device Role / Timing Role: INA592IDR measures sense resistor voltages across wide dynamic range while rejecting ripple and noise from switching stages. Use Value: 18 nV/√Hz noise density and 82 dB min CMRR at 125°C ensure stable regulation even under full-load thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA137UA | G = 1/2 or 2; higher 36 nV/√Hz noise (vs. 18 nV/√Hz), lower 1.5 MHz BW at G = 1/2, no e-trim™ - requires external trimming for best accuracy | Targeted at audio line receivers; not specified for industrial temp range (–40°C to +125°C) | Select INA137UA only for cost-sensitive, non-industrial applications where 0.1% gain error and extended temperature stability are not required. |
| INA821IDRCT | Instrumentation amplifier (not difference amp); programmable gain via external resistor; 7 nV/√Hz noise, but higher 3.6 mA IQ and narrower common-mode range (≥1.5 V from rails) | Requires external gain resistor and reference buffer; unsuitable for direct shunt sensing where input must reach V– | Choose INA821IDRCT when variable gain and ultra-low noise are prioritized over single-supply operation and minimal external components. |
Compared with INA137UA and INA821IDRCT, the INA592IDR uniquely combines factory-trimmed fixed gains, rail-to-rail input capability, and industrial-grade temperature performance in a single IC-reducing calibration effort and PCB area while ensuring consistent accuracy across harsh operating conditions.
Availability
INA592IDR 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 voltage ranges.
Supply support for INA592IDR 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 since 1930.
The INA592IDR belongs to TI's precision difference amplifier product line, engineered specifically for high-voltage industrial current and voltage sensing where accuracy, stability, and ease of use outweigh programmability requirements.
FAQ
What gain configurations does the INA592IDR support?
The INA592IDR supports two fixed gain configurations: G = 1/2 and G = 2. These are implemented via internal laser-trimmed resistor networks and require no external components. Gain selection is determined by external pin connections-specifically, the REF and SENSE pins are configured differently for each mode per TI SBOS914F. The INA592IDR does not support other gain values.
Does the INA592IDR require external precision resistors?
No, the INA592IDR does not require external precision resistors. It integrates a matched, e-trim™ thin-film resistor network that achieves <±0.03% gain error and maintains CMRR >82 dB across –40°C to +125°C. This eliminates calibration steps and layout sensitivity associated with discrete resistor networks-making the INA592IDR a true single-chip solution for high-accuracy difference amplification.
What is the maximum common-mode voltage the INA592IDR can handle?
The INA592IDR supports a common-mode input voltage range extending to the negative supply rail (V–) and up to 3×(V+) – 2×VREF for G = 1/2, or 1.5×(V+) – 0.5×VREF for G = 2. With ±18 V supplies, this enables operation with common-mode voltages up to ±54 V (G = 1/2) or ±27 V (G = 2), making it suitable for direct sensing across high-side shunts in 24 V and 48 V industrial systems.
Can the INA592IDR drive a 1000-pF load?
The INA592IDR is characterized for stable operation with up to 500 pF capacitive load. Driving 1000 pF is not guaranteed and may cause peaking or instability depending on PCB layout and source impedance. For loads >500 pF, TI recommends adding a small series resistor (e.g., 10 Ω) between OUT and the capacitive node, or using an external buffer. The INA592IDR datasheet does not validate performance beyond 500 pF.
Is the INA592IDR qualified for automotive applications?
The INA592IDR is not AEC-Q200 qualified and is not marketed for automotive use. It is specified for industrial applications over –40°C to +125°C and carries no automotive reliability testing or qualification documentation. For automotive current sensing, TI recommends AEC-Q200-qualified alternatives such as the INA240-Q1. The INA592IDR should not be deployed in safety-critical vehicle subsystems.
INA592IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- e-trim™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 2 MHz
- 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:
- 8-SOIC
INA592IDR FAQ
1.How can I place an order for INA592IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA592IDR 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 INA592IDR reliable?
The price and inventory of INA592IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA592IDR is usually 5 days.
3.What payment methods are accepted for INA592IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA592IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA592IDR?
INA592IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA592IDR 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 INA592IDR?
For technical support, including INA592IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA592IDR requirements.
6.How does Aetrix verify that INA592IDR is sourced from the original manufacturer or authorized distributors?
All INA592IDR 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 INA592IDR meets industry standards.
7.What is the process for return or replacement of INA592IDR?
All INA592IDR units undergo pre-shipment inspection (PSI). If there is an issue with INA592IDR, 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 INA592IDR part is unused and in its original packaging.
Return procedure for INA592IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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