My Inquiry
My Account
Texas Instruments INA186A5IDDFR
- Part No.:
- INA186A5IDDFR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
INA186A5IDDFR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
INA186A5IDDFR 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 high-side or low-side configurations for battery-powered portable electronics.
For engineers reviewing the INA186A5IDDFR datasheet, INA186A5IDDFR pinout, INA186A5IDDFR application, or INA186A5IDDFR equivalent, this page delivers verified specifications, validated SOT-23-THIN (DDF) package details, confirmed bidirectional sensing capability via REF/ENABLE pins, and real-world selection guidance against comparable current-sense amplifiers.
Technical Context
The INA186A5IDDFR uses 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 max offset drift and ±1% max gain error across –40°C to +125°C.
This variant integrates ENABLE and REF pins-exclusive to DDF and YFD packages-to support active power gating (reducing IQ to 10 nA) and true bidirectional current measurement by offsetting the output around an externally applied reference voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 500 V/V - sets full-scale output at 2 mV input differential, enabling high-resolution sensing with low-power-loss shunts. |
| Common-mode range | –0.2 V to +40 V - supports direct high-side sensing on 36-V rails without level-shifting, even when powered from 1.8 V. |
| Offset voltage | ±50 µV max - ensures <1% error at 50 µA through 100 mΩ shunt, critical for ultra-low-current battery monitoring. |
| Quiescent current | 48 µA typical - allows continuous current logging in always-on subsystems of smartphones and notebooks with minimal battery drain. |
| Input bias current | 500 pA typical - permits use of large-value sense resistors (>1 kΩ) for sub-microamp measurement without loading error. |
| Bandwidth | 27 kHz - sufficient for DC–10 kHz current transients in PSU feedback loops and battery charge/discharge profiling. |
| CMRR | 120 dB min - rejects bus-voltage ripple and noise in merchant server PSUs where VCM swings near 40 V. |
Pinout & Package
SOT-23-THIN (DDF) 8-pin package: 2.90 mm × 1.60 mm body, 0.65 mm pitch, thermal pad optional. Pin 1 = VS, Pin 2 = ENABLE, Pin 3 = REF, Pin 4 = GND, Pin 5 = OUT, Pin 6 = NC, Pin 7 = IN+, Pin 8 = IN–.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VS (Pin 1) | Analog power supply | Accepts 1.7–5.5 V; powers internal amplifiers and enables ENABLE logic; must be bypassed with 0.1 µF ceramic. |
| ENABLE (Pin 2) | Digital control input | Drives device ON (≥0.7×VS) or OFF (≤0.3×VS); reduces IQ to 10 nA and places OUT in high-Z state when disabled. |
| REF (Pin 3) | Analog reference input | Sets output midpoint for bidirectional sensing; accepts 0–VS; requires buffered source to maintain CMRR. |
| GND (Pin 4) | Analog ground reference | Return path for all analog signals; must be connected to system ground plane with low-inductance trace. |
| OUT (Pin 5) | Voltage output | Provides 500×(IN+ − IN−) + VREF; rail-to-rail swing (GND+1 mV to VS−40 mV) maximizes dynamic range on 1.8-V supplies. |
| NC (Pin 6) | No internal connection | May be left floating, grounded, or tied to VS; no electrical function or thermal benefit. |
| IN+ (Pin 7) | Positive current-sense input | Connects to bus side in high-side sensing or load side in low-side sensing; 500 pA bias current minimizes shunt error. |
| IN− (Pin 8) | Negative current-sense input | Connects to load side in high-side sensing or ground side in low-side sensing; matched to IN+ for CMRR integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing with REF pin | Enables accurate measurement of charging/discharging currents in battery management using single-ended ADC with mid-supply reference. |
| Zero-drift architecture | Maintains ±50 µV offset and 0.5 µV/°C drift over temperature, eliminating calibration need in consumer-grade thermal environments. |
| Ultra-low input bias current | 500 pA typical allows >1 kΩ sense resistors for 1 µA–1 mA range, reducing I²R loss and self-heating in portable devices. |
| Enable-controlled shutdown | Reduces total supply current to 10 nA, supporting duty-cycled current monitoring in IoT edge nodes with multi-year battery life. |
| High common-mode rejection | 120 dB min CMRR suppresses 40-V bus ripple in server PSUs, ensuring stable current readout despite switching noise. |
Applications
| Smartphone Battery Monitoring | Notebook PC Power Management |
|---|---|
Use Scenario: Real-time tracking of battery charge/discharge current during fast charging and system sleep states. IC Role / Device Role / Timing Role: Current-sense amplifier converting mV-level shunt voltage to 0–5 V analog output for MCU ADC sampling. Use Value: 500 V/V gain and ±50 µV offset enable ±10 µA resolution on 10 mΩ shunt, improving SOC estimation accuracy by >2%. |
Use Scenario: Dynamic load current measurement across CPU, GPU, and memory VRMs to trigger thermal throttling and power capping. IC Role / Device Role / Timing Role: High-side current monitor feeding analog feedback to digital power controller for adaptive voltage scaling. Use Value: –0.2 V to +40 V common-mode range allows direct sensing on 19.5-V adapter input rail without auxiliary supply or isolation. |
| Consumer Battery Charger | Merchant Network Server PSU |
Use Scenario: Precision current regulation in USB PD 3.0 chargers delivering 100 W to laptops and tablets. IC Role / Device Role / Timing Role: Bidirectional current sensor providing real-time ICHARGE/IDISCHARGE data to charger IC via REF-biased output. Use Value: ENABLE pin synchronizes sensing with charging phases, cutting average IQ to <1 µA and extending standby time. |
Use Scenario: Input current monitoring in 80 PLUS Titanium PSUs to validate efficiency compliance and detect overcurrent faults. IC Role / Device Role / Timing Role: High-side shunt amplifier interfacing with PMBus controller for telemetry reporting and OCP response. Use Value: 120 dB CMRR rejects 100-kHz switching noise from LLC resonant converters, ensuring stable current readout at 40-V input. |
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 | I²C-output digital current sensor; 16-bit ADC; no ENABLE pin; 26 V max VCM; 100 µA IQ. | Requires MCU I²C interface; lacks analog output for direct ADC use; limited to lower-voltage systems. | Select when digital telemetry, auto-ranging, or integrated power calculation are required over analog simplicity. |
| MAX4008AUA+ | 500 V/V gain; 28 V max VCM; 100 µA IQ; no ENABLE or REF pins; SC70-6 package only. | Unidirectional only; cannot support bidirectional battery monitoring; smaller package limits thermal dissipation. | Select when board space is constrained and bidirectional sensing is unnecessary, but avoid for 36–40 V bus applications. |
Compared with INA219BIDR and MAX4008AUA+, the INA186A5IDDFR uniquely combines 40-V common-mode operation, analog output, ENABLE-controlled shutdown, and REF-based bidirectionality in a thermally robust SOT-23-THIN package-making it optimal for high-accuracy, low-power, mixed-direction current sensing in portable and server power systems.
Availability
INA186A5IDDFR is available at Aetrix Electronics and suitable for smartphone battery monitoring, notebook PC power management, and merchant server PSU telemetry requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for INA186A5IDDFR 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 battery-constrained and high-voltage industrial applications-emphasizing zero-drift stability, wide common-mode tolerance, and flexible bidirectional operation.
FAQ
What is the maximum common-mode voltage supported by the INA186A5IDDFR?
The INA186A5IDDFR 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 rails in server PSUs and automotive accessory modules without external level-shifting circuitry. The specification is guaranteed across –40°C to +125°C and validated per TI's SBOS318B datasheet Section 6.3.
Does the INA186A5IDDFR support bidirectional current sensing?
Yes, the INA186A5IDDFR supports bidirectional current sensing via its dedicated REF pin (Pin 3), which accepts an external voltage (0–VS) to set the output midpoint. When a positive differential voltage appears across the sense resistor, OUT rises above VREF; a negative differential causes OUT to fall below VREF. This functionality is exclusive to DDF and YFD packages and is confirmed in Section 7.3.4 of the official datasheet.
What is the purpose of the ENABLE pin on the INA186A5IDDFR?
The ENABLE pin (Pin 2) controls power state: driving it to ≥0.7×VS activates normal operation (48 µA IQ), while pulling it to ≤0.3×VS disables the amplifier, reducing supply current to 10 nA and placing the OUT pin in high-impedance state. This feature enables duty-cycled current monitoring in battery-powered devices, directly extending operational lifetime without requiring external MOSFET switches.
Can the INA186A5IDDFR be used with a 1.8-V supply?
Yes, the INA186A5IDDFR operates from 1.7 V to 5.5 V, making 1.8-V operation fully supported. At 1.8 V, it delivers rail-to-rail output swing (GND+1 mV to VS−40 mV), 27 kHz bandwidth, and maintains ±50 µV offset-enabling high-resolution current sensing in ultra-low-voltage IoT sensors and wearables where supply headroom is constrained.
What package type is used for the INA186A5IDDFR?
The INA186A5IDDFR uses the SOT-23-THIN (DDF) 8-pin package, measuring 2.90 mm × 1.60 mm with 0.65 mm pitch. This package includes ENABLE and REF pins-unavailable in SC70 or DSBGA variants-and provides superior thermal performance (RθJA = 137.2°C/W) compared to SC70, supporting higher continuous current in compact layouts.
INA186A5IDDFR 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:
- 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 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
INA186A5IDDFR FAQ
1.How can I place an order for INA186A5IDDFR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA186A5IDDFR 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 INA186A5IDDFR reliable?
The price and inventory of INA186A5IDDFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA186A5IDDFR is usually 5 days.
3.What payment methods are accepted for INA186A5IDDFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA186A5IDDFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA186A5IDDFR?
INA186A5IDDFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA186A5IDDFR 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 INA186A5IDDFR?
For technical support, including INA186A5IDDFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA186A5IDDFR requirements.
6.How does Aetrix verify that INA186A5IDDFR is sourced from the original manufacturer or authorized distributors?
All INA186A5IDDFR 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 INA186A5IDDFR meets industry standards.
7.What is the process for return or replacement of INA186A5IDDFR?
All INA186A5IDDFR units undergo pre-shipment inspection (PSI). If there is an issue with INA186A5IDDFR, 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 INA186A5IDDFR part is unused and in its original packaging.
Return procedure for INA186A5IDDFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA186A5IDDFR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
