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Texas Instruments INA206AID
- Part No.:
- INA206AID
- Manufacturer:
- Texas Instruments
- Category:
- Current Regulation/Management
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
INA206AID.pdf
- Description:
- IC CURRENT MONITOR 3.5% 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,712
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Product details
Overview
INA206AID from Texas Instruments is a unidirectional current-shunt monitor IC with 20 V/V gain, dual open-drain comparators (CMP1 latched, CMP2 programmable delay), and integrated 1.2-V reference output. It operates from 2.7 V to 18 V, supports –16 V to 80 V common-mode input range, and delivers 500-kHz bandwidth for real-time shunt-based current sensing in high-side or low-side configurations. Used in server power rails and telecom DC-DC converters for overcurrent detection and supply monitoring.
For engineers reviewing the INA206AID datasheet, INA206AID pinout, INA206AID application, or INA206AID equivalent, this page provides verified functional specifications, SO-14/TSSOP-14 package mapping, comparator timing behavior, reference output load capability, and validated alternative parts for current-sense system design.
Technical Context
The INA206AID integrates a precision current-sense amplifier with fixed 20 V/V gain, two independent comparators sharing internal 0.6-V references (overridable on pins 3 and 6), and a buffered 1.2-V reference output. Its architecture enables simultaneous analog output (OUT) and digital fault signaling (CMP1 OUT, CMP2 OUT) from a single shunt measurement.
Comparator 1 features latch-and-reset functionality via active-low CMP1 RESET pin, while Comparator 2 supports user-defined delay via external capacitor on CMP2 DELAY pin (tD = 5 × CDELAY in µF). The 14-pin package exposes both 1.2-V REF OUT and dual 0.6-V reference override inputs - absent in the 10-pin VSSOP variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V - scales 100-mV shunt drop to 2-V output; enables direct interface with 3.3-V ADCs without attenuation. |
| Common-mode range | –16 V to 80 V - supports high-side sensing in 48-V telecom systems and negative-rail battery monitoring. |
| Bandwidth | 500 kHz - captures fast transient overcurrent events (e.g., short-circuit response in <2 µs). |
| Reference output | 1.2 V ±12 mV (±1%) - stable bias source for comparator thresholds or external circuitry; 1-mA max load. |
| Quiescent current | 1.8 mA - enables always-on monitoring in power-constrained embedded systems. |
| Comparator delay | Programmable via external capacitor (e.g., 0.1 µF → 0.5 s) - prevents false triggering from noise spikes on CMP2. |
| Accuracy | ±3.5% total output error over –40°C to 125°C - meets industrial-grade current measurement requirements. |
Pinout & Package
INA206AID is available in SO-14 (8.65 mm × 3.91 mm) and TSSOP-14 (5.00 mm × 4.40 mm) packages. Both share identical pinout and electrical characteristics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VS) | Power supply input | Accepts 2.7 V–18 V; powers all internal blocks including comparators and reference. |
| 2 (OUT) | Analog voltage output | 20× amplified shunt voltage; rail-to-rail swing (Vs – 0.25 V to GND + 4 mV) at full load. |
| 3 (CMP1 IN– / 0.6V REF) | Comparator 1 negative input / reference tap | Internal 0.6-V reference accessible externally; can be overridden with external voltage for custom threshold. |
| 4 (CMP1 IN+) | Comparator 1 positive input | Monitors OUT or external signal; triggers latched CMP1 OUT when input exceeds reference. |
| 5 (CMP2 IN–) | Comparator 2 negative input | Accepts analog signal (e.g., OUT); compared against internal/override 0.6-V reference. |
| 6 (CMP2 IN+ / 0.6V REF) | Comparator 2 positive input / reference tap | Second 0.6-V reference node; override enables asymmetric threshold configuration. |
| 7 (GND) | Analog ground | Return path for shunt, reference, and comparator circuits; separate from power ground in layout-sensitive designs. |
| 8 (CMP1 RESET) | Active-low reset control | Pulls CMP1 OUT low when asserted; open or grounded at power-up ensures defined initial state. |
| 9 (CMP2 DELAY) | Capacitor connection for delay timing | Connects to external capacitor (0.01–1 µF) to set CMP2 output delay; no connection = minimal delay. |
| 10 (CMP2 OUT) | Open-drain comparator 2 output | Drives external pull-up; asserts low on threshold breach; delay applies to both rising/falling edges. |
| 11 (CMP1 OUT) | Open-drain comparator 1 output | Latched output; remains low until CMP1 RESET is pulsed; used for persistent fault indication. |
| 12 (1.2V REF OUT) | Buffered reference output | Stable 1.2-V source; supplies up to 1 mA; requires 10-nF bypass capacitor for stability. |
| 13 (VIN–) | Shunt low-side connection | Connects to shunt resistor ground side; common-mode voltage referenced here. |
| 14 (VIN+) | Shunt high-side connection | Connects to shunt resistor load side; supports –16 V to 80 V relative to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent comparators | CMP1 provides latched fault flag with hardware reset; CMP2 offers programmable delay to reject noise bursts. |
| Integrated 1.2-V reference | Low-drift (≤100 ppm/°C), buffered output eliminates need for external reference in comparator biasing. |
| Override-capable 0.6-V references | Pins 3 and 6 allow external voltage injection to set custom comparator thresholds beyond fixed 0.6 V. |
| High common-mode tolerance | –16 V to 80 V input range enables direct high-side sensing in 48-V/60-V industrial and telecom supplies. |
| 500-kHz bandwidth | Supports real-time monitoring of fast-switching power stages (e.g., synchronous buck converters). |
Applications
| Server Power Rail Monitoring | Telecom DC-DC Converter Protection |
|---|---|
Use Scenario: Continuous monitoring of 12-V and 48-V backplane supplies in rack-mounted servers to detect overcurrent faults before thermal damage occurs. IC Role / Device Role / Timing Role: INA206AID measures shunt voltage, outputs scaled analog signal (OUT), and asserts latched CMP1 OUT on overcurrent - holding fault state until system controller resets. Use Value: Eliminates need for separate op-amp, reference, and comparator ICs; reduces BOM count by 3–4 components per rail. | Use Scenario: Protecting isolated 5-V/3.3-V point-of-load converters in telecom line cards from short-circuit and overload conditions. IC Role / Device Role / Timing Role: INA206AID senses current in primary-side shunt, uses CMP2 with 100-ms delay to ignore startup inrush, and triggers shutdown only on sustained overcurrent. Use Value: Prevents nuisance tripping during converter soft-start while ensuring sub-500-ms response to hard shorts. |
| Battery Management System (BMS) Cell Balancing | Industrial Motor Drive Current Feedback |
Use Scenario: Monitoring charge/discharge current in 24-V lead-acid or LiFePO₄ battery packs for state-of-charge estimation and overcurrent cutoff. IC Role / Device Role / Timing Role: INA206AID interfaces with low-side shunt, feeds analog output to microcontroller ADC, and drives CMP1 OUT to disable charging FET on overcurrent. Use Value: Single-chip solution meets IEC 62368-1 fault response timing requirements (<10 ms) with no software dependency. | Use Scenario: Closed-loop current control in 24-V brushless DC motor drives where precise phase current feedback is required for torque regulation. IC Role / Device Role / Timing Role: INA206AID amplifies shunt voltage from low-inductance current-sense resistor, delivers 500-kHz bandwidth signal to PWM controller, and flags overcurrent via CMP2 OUT. Use Value: Enables >20-kHz PWM operation with minimal phase lag; 20-V/V gain matches typical 3.3-V ADC full-scale range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA207AID | 50 V/V gain (vs. 20 V/V); same pinout, package, and feature set. | Requires lower shunt voltage (e.g., 40 mV full-scale) for same output swing; better SNR in low-current sensing. | Select when higher gain improves ADC resolution for sub-1-A current ranges. |
| INA219AIDR | I²C digital output (16-bit ADC), no comparators or reference output; 26-V max common-mode. | Replaces analog monitoring with digital bus interface; lacks hardware fault latching and delay. | Select when system already uses I²C and firmware can handle fault logic; not suitable for safety-critical latch-required use cases. |
Compared with INA207AID and INA219AIDR, the INA206AID provides optimal balance of analog simplicity, hardware-based fault response, and wide common-mode range - making it preferred for industrial power supplies where deterministic, zero-latency overcurrent protection is mandatory.
Availability
INA206AID is available at Aetrix Electronics and suitable for server power management, telecom DC-DC converters, battery management systems, and industrial motor drives requiring stable component supply across extended temperature and voltage ranges.
Supply support for INA206AID 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 conditioning and power management ICs.
The INA206AID belongs to TI's current-shunt monitor product line, designed specifically for high-accuracy, high-common-mode current sensing in power supply, computing, and industrial equipment where reliability and integration reduce system complexity.
FAQ
What is the maximum common-mode voltage supported by the INA206AID?
The INA206AID supports a common-mode input voltage range of –16 V to 80 V. This allows direct high-side current sensing in 48-V telecom systems and negative-rail battery monitoring applications. The specification is guaranteed over the full operating temperature range (–40°C to 125°C) and applies to both VIN+ and VIN– pins simultaneously.
How does the CMP2 DELAY pin function on the INA206AID?
The CMP2 DELAY pin on the INA206AID accepts an external capacitor to program comparator 2's response delay. Using the equation tD = 5 × CDELAY (with C in µF), a 0.1-µF capacitor yields ~0.5 s delay. This delay applies to both rising and falling edges of CMP2 OUT and prevents false triggering from transient noise - a key requirement in noisy industrial environments where the INA206AID is commonly deployed.
Can the internal 0.6-V reference of the INA206AID be overridden?
Yes - on the 14-pin SO-14 and TSSOP-14 packages, the INA206AID exposes its internal 0.6-V reference on pins 3 (CMP1 IN– / 0.6V REF) and 6 (CMP2 IN+ / 0.6V REF). Applying an external voltage to either pin overrides the internal reference, enabling custom comparator thresholds. This feature is unavailable in the 10-pin VSSOP variant and is explicitly documented in the INA206AID datasheet Section 6 (Pin Functions).
What is the accuracy of the 1.2-V reference output on the INA206AID?
The 1.2-V reference output on the INA206AID has a tolerance of ±12 mV (±1%) at 25°C and drift ≤100 ppm/°C over –40°C to 85°C. It can source up to 1 mA while maintaining regulation within ±2 mV/mA load change. This performance makes it suitable as a stable bias for external comparators or ADC reference buffers in systems using the INA206AID.
Does the INA206AID require external components for stable operation?
Yes - the INA206AID requires a 10-nF ceramic capacitor between 1.2V REF OUT (pin 12) and GND for reference stability, and pull-up resistors (typically 4.7 kΩ to VS) on CMP1 OUT and CMP2 OUT due to their open-drain outputs. No compensation components are needed on the OUT pin for stability under recommended capacitive loads (<10 nF), as confirmed in the INA206AID datasheet Section 7.5.
INA206AID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Current Monitor
- Sensing Method:
- High-Side
- Accuracy:
- ±3.5%
- Voltage - Input:
- -16V ~ 80V
- Current - Output:
- 1mA
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
INA206AID FAQ
1.How can I place an order for INA206AID through Aetrix?
Please submit a Request for Quotation (RFQ) for INA206AID 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 INA206AID reliable?
The price and inventory of INA206AID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA206AID is usually 5 days.
3.What payment methods are accepted for INA206AID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA206AID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA206AID?
INA206AID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA206AID 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 INA206AID?
For technical support, including INA206AID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA206AID requirements.
6.How does Aetrix verify that INA206AID is sourced from the original manufacturer or authorized distributors?
All INA206AID 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 INA206AID meets industry standards.
7.What is the process for return or replacement of INA206AID?
All INA206AID units undergo pre-shipment inspection (PSI). If there is an issue with INA206AID, 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 INA206AID part is unused and in its original packaging.
Return procedure for INA206AID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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