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Texas Instruments INA186A5IYFDR
- Part No.:
- INA186A5IYFDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
INA186A5IYFDR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:832
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Product details
Overview
INA186A5IYFDR 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, 48 µA typical quiescent current, and enable functionality-designed for precision microamp-level current monitoring in battery-powered consumer electronics.
For engineers reviewing the INA186A5IYFDR datasheet, INA186A5IYFDR pinout, INA186A5IYFDR application, or INA186A5IYFDR equivalent, key selection considerations include its DSBGA-6 (YFD) package with ENABLE/IN+/IN−/OUT/GND/VS terminals, bidirectional sensing capability via external REF biasing (not available on YFD), and low-power operation down to 1.7 V supply-critical for smartphone, notebook, and battery-test instrumentation designs.
Technical Context
The INA186A5IYFDR uses a capacitively coupled front-end architecture to achieve 120 dB minimum CMRR and reject dc common-mode shifts up to 40 V-enabling accurate high-side sensing even when bus voltage exceeds supply. Its zero-drift design maintains ±0.5 µV/°C max offset drift and ±1% max gain error across –40°C to +125°C.
This variant implements a fixed 500 V/V gain optimized for sub-millivolt differential inputs (e.g., 2 mV full-scale at 1 mΩ shunt), with 27 kHz small-signal bandwidth and rail-to-rail output swing (GND +1 mV / VS –40 mV). The ENABLE pin (B3) reduces supply current to <100 nA in shutdown, placing OUT in high-impedance state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 500 V/V - enables accurate measurement of ≤2 mV sense voltage drops, suitable for low-loss shunts in portable power rails. |
| Common-mode range | –0.2 V to +40 V - supports direct high-side sensing on 3.3 V, 5 V, 12 V, and 36 V bus lines independent of 1.7–5.5 V supply. |
| Offset voltage | ±50 µV max - ensures <0.1% error at 50 mV input, critical for microamp-range current detection with large sense resistors. |
| Quiescent current | 48 µA typical - extends battery life in always-on current monitoring; drops to <100 nA when ENABLE = GND. |
| CMRR | 120 dB min - rejects noise from noisy DC bus transients, preserving accuracy in baseband unit and server PSU applications. |
| Input bias current | 500 pA typical - permits use of ≥10 kΩ RC filters without gain/offset degradation, improving EMI immunity in compact layouts. |
| Operating temp | –40°C to +125°C - qualified for industrial-grade embedded systems including merchant network PSUs and battery test equipment. |
Pinout & Package
INA186A5IYFDR is packaged in a 1.17 mm × 0.765 mm, 6-ball DSBGA (YFD) with 0.4-mm pitch. This ultra-compact package supports automated placement in space-constrained mobile and wearable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+ | Analog input (positive) | Connects to bus side of shunt in high-side sensing; load side in low-side sensing-defines current direction polarity. |
| IN− | Analog input (negative) | Connects to load side of shunt in high-side sensing; ground side in low-side sensing-completes differential measurement path. |
| OUT | Analog output | Provides 500×(IN+ − IN−) voltage output; high-impedance when ENABLE = GND; swing limited to GND +1 mV / VS –40 mV. |
| GND | Analog ground | Reference node for all analog signals; must be low-impedance connection to minimize noise coupling into sensitive inputs. |
| VS | Power supply | Accepts 1.7–5.5 V single supply; powers internal amplifiers and ENABLE logic; bypass capacitor required per layout guidelines. |
| ENABLE | Digital control input | Active-high enable (B3 ball); drives device ON when pulled to VS; places OUT in Hi-Z and reduces IQ to <100 nA when pulled to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing support | Enabled via external REF voltage biasing-though REF pin is not present on YFD package; internal REF = GND limits this variant to unidirectional operation. |
| Zero-drift architecture | ±0.5 µV/°C max offset drift ensures stable calibration over temperature-eliminates need for periodic system-level offset correction in battery chargers. |
| Ultra-low input bias current | 500 pA typical allows ≥100 kΩ input RC filtering without measurable gain/phase error-critical for noise rejection in smartphone PMIC telemetry paths. |
| Rail-to-rail output | Output swings to GND +1 mV and VS –40 mV-maximizes dynamic range on 1.8 V supplies, enabling full-scale resolution down to 3.6 µV LSB at 500× gain. |
| Enable-controlled shutdown | Reduces total supply current to <100 nA-supports duty-cycled current monitoring in IoT edge nodes without compromising wake-up latency. |
Applications
| Smartphone Power Management | Notebook Battery Protection |
|---|---|
|
Use Scenario: Real-time charging/discharging current monitoring in USB-C PD power delivery paths with 3.3–20 V variable bus voltage. IC Role / Device Role / Timing Role: Current-sense amplifier measuring mV-level shunt voltage with 500× gain to resolve ±100 µA changes at 10 mΩ resistor. Use Value: Enables precise Coulomb counting and state-of-charge estimation under dynamic load conditions while consuming <50 µA continuously. |
Use Scenario: Overcurrent detection and charge balancing in multi-cell Li-ion battery packs within ultrabooks and 2-in-1 devices. IC Role / Device Role / Timing Role: High-side current monitor interfaced to MCU ADC, operating from same 3.3 V rail as system controller. Use Value: Delivers ±1% full-scale accuracy across –20°C to +70°C ambient, supporting JEITA-compliant thermal charge profiling without recalibration. |
| Consumer Battery Tester | Baseband Unit (BBU) Telemetry |
|
Use Scenario: Precision discharge/charge cycle validation for AAA/AA cells and power banks using programmable electronic loads. IC Role / Device Role / Timing Role: Unidirectional current sensor with 1.7 V minimum supply, enabling operation from low-voltage test fixture rails. Use Value: Resolves 500 nA current steps via 10 kΩ sense resistor-achieving 16-bit-equivalent resolution without external amplification. |
Use Scenario: Real-time power rail current telemetry in 5G remote radio head baseband processing modules. IC Role / Device Role / Timing Role: Low-drift monitor on 12 V and 48 V intermediate distribution buses feeding FPGA and RF SoCs. Use Value: Maintains <0.01% gain error stability over 10,000-hour field operation-reducing BBU thermal derating margins and cooling requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA186A5IDDFT | SOT-23-8 (DDF) package with REF and ENABLE pins; supports true bidirectional sensing via externally applied REF voltage. | Required where bidirectional current flow (charge/discharge reversal) must be distinguished without external level-shifting circuitry. | Select INA186A5IDDFT if REF functionality is needed; INA186A5IYFDR is optimal for unidirectional, space-constrained, low-IQ designs. |
| INA219BIDR | I²C-output digital current/voltage/power monitor with integrated 12-bit ADC; no ENABLE pin; 26 V max VCM; 0.1% gain error. | Used when system MCU lacks ADC resources or requires calibrated digital output; higher power (1 mA active) and larger footprint. | Choose INA219BIDR for plug-and-play digital integration; INA186A5IYFDR suits analog-domain signal chains requiring minimal overhead and lowest quiescent power. |
Compared with INA186A5IDDFT, INA186A5IYFDR sacrifices REF-based bidirectionality for 40% smaller board area and identical electrical performance in unidirectional use cases; versus INA219BIDR, it delivers 20× lower active current and direct analog output-but requires external ADC and signal conditioning.
Availability
INA186A5IYFDR is available at Aetrix Electronics and suitable for smartphone power management, notebook battery protection, and consumer battery-test instrumentation requiring stable component supply, long-term lifecycle support, and consistent DSBGA-6 packaging.
Supply support for INA186A5IYFDR 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 high-accuracy, low-power current sensing in battery-operated and energy-efficient systems-emphasizing zero-drift stability, wide common-mode tolerance, and flexible enable-controlled operation.
FAQ
What is the maximum common-mode voltage the INA186A5IYFDR can handle?
The INA186A5IYFDR 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 industrial rails or low-side sensing near ground, with guaranteed operation across the full –40°C to +125°C temperature range. The specification is validated per TI's SBOS318B datasheet Section 6.3.
Does the INA186A5IYFDR support bidirectional current sensing?
No-the INA186A5IYFDR in the YFD (DSBGA-6) package does not include a REF pin; its REF node is internally grounded, limiting it to unidirectional current sensing. Bidirectional operation requires an external reference voltage applied to the REF pin, which is only available on DCK (SC70) and DDF (SOT-23) variants like INA186A5IDDFT. This is explicitly stated in the Pin Functions table (Section 5.1) of the datasheet.
What is the typical quiescent current of the INA186A5IYFDR, and how does the ENABLE pin affect it?
The INA186A5IYFDR draws 48 µA typical quiescent current during normal operation. When the ENABLE pin (B3) is driven to GND, the device enters shutdown mode and draws less than 100 nA total supply current, while placing the OUT pin in high-impedance state. This behavior is confirmed in Electrical Characteristics Table 6.5 (IQ = 48 µA typ; IQDIS = 10–100 nA) and Functional Description Section 7.3.3.
What is the gain accuracy and drift specification for the INA186A5IYFDR?
The INA186A5IYFDR has a fixed gain of 500 V/V with ±1% maximum gain error over temperature and process variation. Its gain drift is specified at ≤10 ppm/°C maximum, ensuring stable scaling across –40°C to +125°C. These values are measured under recommended operating conditions (VS = 1.8–5.0 V, TA = –40°C to +125°C) and documented in Section 6.5 Electrical Characteristics of the SBOS318B datasheet.
Can the INA186A5IYFDR operate from a 1.7 V supply, and what is its output swing at that voltage?
Yes-the INA186A5IYFDR is fully specified for operation from 1.7 V to 5.5 V supply. At VS = 1.7 V, its output swings from GND +1 mV (minimum) to VS –40 mV (maximum), delivering usable linear range down to 1.66 V. This rail-to-rail capability is critical for 1.8 V system rails and is verified in Section 6.5 (VSP/VSN parameters) and Figure 6-4 of the datasheet.
INA186A5IYFDR 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:
- 27 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)
INA186A5IYFDR FAQ
1.How can I place an order for INA186A5IYFDR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA186A5IYFDR 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 INA186A5IYFDR reliable?
The price and inventory of INA186A5IYFDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA186A5IYFDR is usually 5 days.
3.What payment methods are accepted for INA186A5IYFDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA186A5IYFDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA186A5IYFDR?
INA186A5IYFDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA186A5IYFDR 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 INA186A5IYFDR?
For technical support, including INA186A5IYFDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA186A5IYFDR requirements.
6.How does Aetrix verify that INA186A5IYFDR is sourced from the original manufacturer or authorized distributors?
All INA186A5IYFDR 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 INA186A5IYFDR meets industry standards.
7.What is the process for return or replacement of INA186A5IYFDR?
All INA186A5IYFDR units undergo pre-shipment inspection (PSI). If there is an issue with INA186A5IYFDR, 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 INA186A5IYFDR part is unused and in its original packaging.
Return procedure for INA186A5IYFDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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