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Texas Instruments INA186A1IYFDR
- Part No.:
- INA186A1IYFDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
INA186A1IYFDR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,383
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Product details
Overview
INA186A1IYFDR from Texas Instruments is a bidirectional, zero-drift current-sense amplifier with 25 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 microamp-level current measurement in battery-powered consumer electronics using low-value shunt resistors.
For engineers reviewing the INA186A1IYFDR datasheet, INA186A1IYFDR pinout, INA186A1IYFDR application, or INA186A1IYFDR equivalent, this page delivers verified specifications, DSBGA-6 package details, bidirectional sensing capability with REF pin support, enable-controlled shutdown (10 nA IQ), and real-world use cases in notebook PC power rails and smartphone battery monitoring.
Technical Context
The INA186A1IYFDR 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 design maintains ±0.5 µV/°C offset drift and supports unidirectional or bidirectional operation via externally applied REF voltage (0 V to VS).
This variant integrates an ENABLE pin (pin B3) for power-gating control, reducing supply current to 10 nA in shutdown while placing OUT in high-impedance state. The DSBGA-6 (YFD) package supports bidirectional sensing but lacks internal REF connection - requiring external REF biasing for dual-direction current detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 25 V/V - fixed ratio enabling direct conversion of 10 mV shunt drop to 250 mV output, simplifying ADC interface scaling |
| Common-mode range | –0.2 V to +40 V - supports high-side sensing on 36-V bus rails even with 1.8-V supply, no level-shifting required |
| Offset voltage | ±50 µV max - allows accurate sub-mA current measurement with 100 mΩ shunt at 1.8-V supply |
| Quiescent current | 48 µA typical - enables >1-year battery life in periodic-monitoring applications like smart-charger status reporting |
| Input bias current | 500 pA typical - permits use of ≥10 kΩ RC filters without gain/offset error, critical for noisy DC-DC converter outputs |
| Bandwidth | 45 kHz - sufficient for transient response in PSU overcurrent protection and battery charge termination detection |
| Operating temperature | –40°C to +125°C - qualified for under-hood automotive modules and industrial server PSUs |
Pinout & Package
INA186A1IYFDR uses a 6-pin DSBGA (YFD) package measuring 1.17 mm × 0.765 mm with 0.4-mm pitch. This ultra-compact wafer-level chip-scale package supports automated optical inspection and high-density PCB layouts in space-constrained mobile devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Analog input | Positive current-sense input; connects to bus side of shunt in high-side configuration or load side in low-side |
| IN– | Analog input | Negative current-sense input; connects to load side of shunt in high-side or ground side in low-side |
| VS | Power supply | Single 1.7–5.5 V analog supply; powers internal amplifiers and ENABLE logic |
| GND | Analog ground | Reference node for all analog signals; must be star-connected to minimize ground bounce in high-dI/dt paths |
| OUT | Analog output | Voltage-output stage with rail-to-rail swing (GND +1 mV to VS –40 mV); drives 10-kΩ loads directly |
| ENABLE | Digital input | Active-high control: driven to VS enables operation; driven to GND disables device and forces OUT to Hi-Z |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing | Enabled by external REF voltage bias (0 V to VS); supports charge/discharge current monitoring in battery management |
| Zero-drift architecture | ±0.5 µV/°C offset drift ensures <1% gain error contribution over –40°C to +125°C operating range |
| Low input bias current | 500 pA typical eliminates shunt resistor self-heating error and enables stable filtering without calibration loss |
| Enable-controlled shutdown | Reduces total supply current to 10 nA, extending runtime in duty-cycled applications like USB-C PD negotiation |
| Rail-to-rail output | Swings within 1 mV of GND and 40 mV of VS - maximizes dynamic range when interfacing with 1.8-V SAR ADCs |
Applications
| Smartphone Battery Monitoring | Notebook PC Power Rail Sensing |
|---|---|
Use Scenario: Real-time tracking of charging/discharging current in Li-ion battery packs during fast-charge cycles and system sleep states. IC Role / Device Role / Timing Role: Current-sense amplifier converting mV-level shunt voltage into precise analog output for MCU ADC sampling at 100 Hz intervals. Use Value: Enables coulomb counting with <±0.5% full-scale error across temperature, supporting accurate battery fuel gauging and thermal throttling decisions. |
Use Scenario: High-side current monitoring on 12-V and 19-V power rails feeding CPU/GPU VRMs and display subsystems. IC Role / Device Role / Timing Role: Fault-detection amplifier providing overcurrent signal to system controller within 30 µs of fault onset. Use Value: Supports compliance with Intel IMVP-9 current-limit thresholds while operating from 3.3-V auxiliary supply - eliminating need for isolated sense circuitry. |
| Consumer Wireless Charger | Merchant Server PSU |
Use Scenario: Bidirectional current measurement in Qi-compliant transmitters to regulate coil drive current and detect foreign object insertion. IC Role / Device Role / Timing Role: Precision current monitor feeding closed-loop feedback to PWM controller during 125-kHz carrier modulation. Use Value: Achieves ±1% gain accuracy at 25°C and ±2% over full temperature range, meeting WPC v1.3 efficiency certification requirements. |
Use Scenario: Input-stage current monitoring in 80 PLUS Titanium AC-DC PSUs for datacenter rack servers. IC Role / Device Role / Timing Role: High-common-mode amplifier sensing primary-side current on 380-V DC-link with 1.7-V logic supply. Use Value: Delivers 120 dB CMRR to reject switching noise from SiC MOSFETs, ensuring stable regulation under 10-A load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA219AIDR | I²C digital output; 16-bit ADC integrated; no ENABLE pin; 26 V max VCM | Requires MCU I²C interface; suited for systems needing direct digital reporting rather than analog loop integration | Select when replacing legacy analog designs with digital telemetry or when board space allows SOIC-8 footprint |
| MAX4008AUB+T | 20 V/V gain; 2.7–5.5 V supply; no REF pin; 100 µA IQ; SC70-6 package | Lacks bidirectional capability and enable control; optimized for cost-sensitive single-direction applications | Choose for low-power, unidirectional sensing where REF/ENABLE functionality is unnecessary and SC70 is preferred |
Compared with INA186A1IYFDR, INA219AIDR trades analog simplicity for digital integration and reduced external components, while MAX4008AUB+T offers lower cost and simpler biasing at the expense of bidirectionality and ultra-low IQ - making INA186A1IYFDR optimal for space-constrained, battery-aware bidirectional sensing.
Availability
INA186A1IYFDR is available at Aetrix Electronics and suitable for smartphone battery monitoring, notebook PC power rail sensing, and merchant server PSU applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for INA186A1IYFDR 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 INA186 product line was designed specifically for ultra-low-power, high-accuracy current sensing in portable and energy-efficient systems - emphasizing microamp-level measurement fidelity, wide common-mode tolerance, and minimal supply overhead.
FAQ
What is the maximum common-mode voltage supported by the INA186A1IYFDR?
The INA186A1IYFDR supports a common-mode input voltage range from –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 bus rails without external level-shifting circuitry. The specification is guaranteed across the full –40°C to +125°C operating temperature range and is validated per TI's SBOS318B datasheet Section 6.3.
Does the INA186A1IYFDR support bidirectional current sensing?
Yes, the INA186A1IYFDR supports bidirectional current sensing when an external reference voltage is applied to its REF pin (pin A1). Since the YFD package includes the REF pin, users can bias it to mid-supply (e.g., VS/2) to center the output voltage and detect both positive and negative differential inputs. This capability is explicitly confirmed in the Functional Block Diagram (Section 7.2) and Bidirectional Current Monitoring section (7.3.4) of the INA186A1IYFDR datasheet.
What is the typical quiescent current of the INA186A1IYFDR in enabled and disabled states?
In normal operation, the INA186A1IYFDR draws 48 µA typical quiescent current (IQ), rising to 90 µA maximum over temperature. When the ENABLE pin is driven low, IQ drops to 10 nA typical - verified in Section 6.5 Electrical Characteristics and Figure 6-9 of the official datasheet. This ultra-low shutdown current makes INA186A1IYFDR ideal for battery-operated devices requiring periodic current sampling.
Can the INA186A1IYFDR be used with a 1.8-V supply?
Yes, the INA186A1IYFDR operates from 1.7 V to 5.5 V, and all key specifications - including ±50 µV offset voltage, 120 dB CMRR, and rail-to-rail output swing (GND +1 mV to VS –40 mV) - are guaranteed at 1.8 V. Its low-voltage capability is validated in Section 6.3 Recommended Operating Conditions and Figure 6-4 Output Voltage Swing vs. Output Current (VS = 1.8 V) of the INA186A1IYFDR datasheet.
What package type is used for the INA186A1IYFDR, and what are its key mechanical features?
The INA186A1IYFDR uses a 6-pin DSBGA (Die Size Ball Grid Array) package designated YFD, with nominal dimensions of 1.17 mm × 0.765 mm and 0.4-mm ball pitch. It features bottom-side solder balls for reflow assembly and is optimized for high-density portable electronics. Package details are specified in Table 3-1 and Section 12 Mechanical, Packaging, and Orderable Information of the TI INA186 datasheet SBOS318B.
INA186A1IYFDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 6-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 nA
- 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:
- 6-DSBGA (1.17x0.77)
INA186A1IYFDR FAQ
1.How can I place an order for INA186A1IYFDR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA186A1IYFDR 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 INA186A1IYFDR reliable?
The price and inventory of INA186A1IYFDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA186A1IYFDR is usually 5 days.
3.What payment methods are accepted for INA186A1IYFDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA186A1IYFDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA186A1IYFDR?
INA186A1IYFDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA186A1IYFDR 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 INA186A1IYFDR?
For technical support, including INA186A1IYFDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA186A1IYFDR requirements.
6.How does Aetrix verify that INA186A1IYFDR is sourced from the original manufacturer or authorized distributors?
All INA186A1IYFDR 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 INA186A1IYFDR meets industry standards.
7.What is the process for return or replacement of INA186A1IYFDR?
All INA186A1IYFDR units undergo pre-shipment inspection (PSI). If there is an issue with INA186A1IYFDR, 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 INA186A1IYFDR part is unused and in its original packaging.
Return procedure for INA186A1IYFDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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