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Texas Instruments INA186A5IDDFT
- Part No.:
- INA186A5IDDFT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
INA186A5IDDFT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:184
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Product details
Overview
INA186A5IDDFT from Texas Instruments is a bidirectional, zero-drift current-sense amplifier with 500 V/V fixed gain, –0.2 V to +40 V common-mode input range, ±50 µV max offset voltage, and 48 µA typical quiescent current. It enables precision microamp-level current monitoring in battery-powered portable electronics using low-value shunt resistors.
For engineers reviewing the INA186A5IDDFT datasheet, INA186A5IDDFT pinout, INA186A5IDDFT application, or INA186A5IDDFT equivalent, this page delivers verified specifications, SC70-6 package mapping, bidirectional sensing capability with REF pin support, and real-world use cases in notebook PC power rails and smartphone battery management.
Technical Context
The INA186A5IDDFT employs a capacitively coupled front-end architecture to achieve 120 dB minimum CMRR and reject DC common-mode shifts up to ±40 V independent of its 1.7–5.5 V supply. Its zero-drift topology ensures <0.5 µV/°C offset drift and ±1% max gain error across –40°C to +125°C.
It integrates an ENABLE pin (active-high) for ultra-low-power operation-reducing supply current to 10 nA in shutdown-while maintaining rail-to-rail output swing (GND +1 mV / VS –40 mV) and 27 kHz small-signal bandwidth at 500 V/V gain.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 500 V/V - sets full-scale output for 2-mV input differential, enabling accurate measurement of sub-100-µA currents with 100-mΩ shunt |
| Common-mode range | –0.2 V to +40 V - supports high-side sensing on 36-V bus rails without level-shifting, even when powered from 1.8 V |
| Offset voltage | ±50 µV max - allows resolution of 100-nA current through 100-Ω sense resistor (10 µV drop), extending dynamic range |
| Quiescent current | 48 µA typ - enables >1-year battery life in periodic-monitoring applications like smart-charger state detection |
| CMRR | 120 dB min - suppresses 40-V bus ripple to <10 µV error at output, critical for stable feedback in PSU control loops |
| Bandwidth | 27 kHz - sufficient for transient response in battery protection ICs and DC-DC converter current limiting |
| Input bias current | 500 pA typ - permits use of RC filters (e.g., 10 kΩ + 10 nF) without gain/offset degradation, improving EMI immunity |
Pinout & Package
INA186A5IDDFT is packaged in a 6-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, with wettable flanks and RoHS-compliant matte tin lead finish. The package supports reflow soldering per JEDEC J-STD-020 and is rated for operation from –40°C to +125°C.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| REF | Analog reference input | Enables bidirectional sensing: applying mid-supply voltage (e.g., VS/2) centers output at that level for ± current flow detection |
| OUT | Analog voltage output | Provides single-ended, rail-to-rail output proportional to (IN+ − IN−) × 500 + VREF; high-impedance when ENABLE = GND |
| GND | Analog ground reference | Return path for internal circuitry and output stage; must be connected directly to system ground plane for noise immunity |
| VS | Power supply input | Accepts 1.7–5.5 V; powers internal amplifiers and bias networks; bypass capacitor (0.1 µF) required at pin |
| IN− | Negative current-sense input | Connects to load side of shunt in high-side config or ground side in low-side config; 500 pA bias minimizes error |
| IN+ | Positive current-sense input | Connects to bus side of shunt in high-side config or load side in low-side config; withstands –0.2 V to +40 V common-mode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing with REF pin | Supports true ± current measurement (e.g., charge/discharge in battery packs) by offsetting output baseline without external op-amps |
| Zero-drift architecture | Delivers <0.5 µV/°C offset drift and ±50 µV max offset over temperature-enabling stable calibration over full industrial range |
| Ultra-low input bias current | 500 pA typical allows use of large-value RC filters (e.g., 100 kΩ + 100 nF) for EMI suppression without degrading accuracy |
| Enable-controlled shutdown | Reduces supply current to 10 nA while placing OUT in high-Z state-ideal for duty-cycled monitoring in energy-harvesting systems |
| Rail-to-rail output | Swings to GND +1 mV and VS –40 mV, maximizing usable dynamic range on 1.8-V supplies (e.g., 1.79 V span for 10-bit ADC) |
Applications
| Smartphone Battery Management | Notebook PC Power Rail Monitoring |
|---|---|
Use Scenario: Real-time monitoring of battery charge/discharge current during fast charging and system sleep states. IC Role / Device Role / Timing Role: Current-sense amplifier providing bidirectional analog output to MCU ADC for coulomb counting and state-of-charge estimation. Use Value: 500 V/V gain and ±50 µV offset enable 100-µA resolution with 10-mΩ shunt, minimizing power loss (<10 µW at 100 µA) while supporting 5-A full scale. | Use Scenario: High-side current sensing on 19.5-V adapter input rail and 12-V GPU VRM input to detect overcurrent faults. IC Role / Device Role / Timing Role: Precision current monitor feeding analog comparator or MCU for real-time OCP response within 30 µs. Use Value: –0.2 V to +40 V common-mode range allows direct connection to 19.5-V rail without level shifters; 120 dB CMRR rejects adapter ripple. |
| Consumer Wireless Charger | Merchant Server PSU Telemetry |
Use Scenario: Measuring coil current and rectified output current in Qi-compliant 15-W transmitters and receivers. IC Role / Device Role / Timing Role: Dual-channel current sensing (IN+/IN− on primary and secondary sides) for foreign object detection and efficiency optimization. Use Value: 48 µA quiescent current extends standby battery life; 27 kHz bandwidth captures PWM-modulated coil current harmonics up to 5th order. | Use Scenario: Digitally monitored 48-V input and 12-V output rails in 80 PLUS Titanium PSUs for datacenter servers. IC Role / Device Role / Timing Role: Analog front-end for PMBus-compatible telemetry ICs, providing isolated current data via ADC interface. Use Value: SC70-6 footprint minimizes PCB area in dense PSU layouts; DCK package supports automated optical inspection (AOI) due to visible solder joints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA219BIDR | Integrated 12-bit ADC and I²C interface; 16-V max common-mode; 100 µA IQ; no ENABLE pin | Best for digital-output systems requiring minimal MCU GPIO; unsuitable for >16-V rails or analog feedback loops | Select INA219BIDR when system uses I²C and needs on-chip ADC conversion-avoid for analog control loops or 36-V battery monitoring. |
| MAX40056AUT+T | 200 V/V gain only; 2.7–5.5 V supply; 60 µA IQ; no REF pin; SOT-23-6 package | Limited to unidirectional sensing; lacks bidirectional capability and ultra-low bias current (2 nA vs. 500 pA) | Select MAX40056AUT+T for cost-sensitive, unidirectional 12-V applications where 2-nA bias is acceptable-avoid for µA-level precision or bidirectional use. |
Compared with INA219BIDR and MAX40056AUT+T, the INA186A5IDDFT uniquely combines 500 V/V gain, ±40 V common-mode, bidirectional operation via REF, and 500-pA input bias-making it the only option for high-accuracy, low-power, analog-output current sensing on 36-V battery rails with microamp resolution.
Availability
INA186A5IDDFT is available at Aetrix Electronics and suitable for notebook PC power management, smartphone battery telemetry, and merchant server PSU monitoring requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for INA186A5IDDFT 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 personal electronics markets.
The INA186 product line was designed specifically for high-accuracy, low-power current sensing in space-constrained portable and battery-operated systems-emphasizing zero-drift stability, wide common-mode tolerance, and enable-controlled power gating.
FAQ
What is the maximum common-mode voltage the INA186A5IDDFT can handle?
The INA186A5IDDFT supports a common-mode input voltage range of –0.2 V to +40 V, independent of its 1.7–5.5 V supply voltage. This allows direct high-side sensing on 36-V battery rails or 48-V server PSUs without external level-shifting circuitry. The specification is guaranteed across –40°C to +125°C and applies to both IN+ and IN− pins referenced to GND.
Does the INA186A5IDDFT support bidirectional current sensing?
Yes, the INA186A5IDDFT supports bidirectional current sensing via its REF pin. When a reference voltage (e.g., VS/2) is applied to REF, the output becomes centered at that voltage: positive differential input (IN+ > IN−) drives OUT above VREF, and negative differential input drives OUT below VREF. This enables precise charge/discharge monitoring in battery packs and USB PD applications.
What is the purpose of the ENABLE pin on the INA186A5IDDFT?
The ENABLE pin on the INA186A5IDDFT controls device power state: driving it high (to VS) activates normal operation with 48 µA typical quiescent current, while driving it low (to GND) places the device in shutdown mode with ≤10 nA supply current and high-impedance output. This feature is essential for duty-cycled current monitoring in battery-powered devices to extend operational lifetime.
Can the INA186A5IDDFT operate from a 1.8-V supply?
Yes, the INA186A5IDDFT operates from a minimum supply voltage of 1.7 V, making it fully functional at 1.8 V. At this voltage, it maintains rail-to-rail output swing (GND +1 mV / VS –40 mV), 27 kHz bandwidth, and specified accuracy (±50 µV offset, ±1% gain error). A 0.1-µF ceramic bypass capacitor is required between VS and GND for stable operation.
What package type is used for the INA186A5IDDFT?
The INA186A5IDDFT uses the SC70-6 (DCK) package: a 2.00 mm × 1.25 mm surface-mount outline with gull-wing leads, wettable flanks, and RoHS-compliant matte tin plating. This package is optimized for automated assembly, thermal performance (170.7°C/W θJA), and space-constrained applications such as smartphone PMIC modules and ultrabook VRMs.
INA186A5IDDFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 45 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 3 µV
- Current - Supply:
- 48µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
INA186A5IDDFT FAQ
1.How can I place an order for INA186A5IDDFT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA186A5IDDFT 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 INA186A5IDDFT reliable?
The price and inventory of INA186A5IDDFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA186A5IDDFT is usually 5 days.
3.What payment methods are accepted for INA186A5IDDFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA186A5IDDFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA186A5IDDFT?
INA186A5IDDFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA186A5IDDFT 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 INA186A5IDDFT?
For technical support, including INA186A5IDDFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA186A5IDDFT requirements.
6.How does Aetrix verify that INA186A5IDDFT is sourced from the original manufacturer or authorized distributors?
All INA186A5IDDFT 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 INA186A5IDDFT meets industry standards.
7.What is the process for return or replacement of INA186A5IDDFT?
All INA186A5IDDFT units undergo pre-shipment inspection (PSI). If there is an issue with INA186A5IDDFT, 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 INA186A5IDDFT part is unused and in its original packaging.
Return procedure for INA186A5IDDFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA186A5IDDFT Tags
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