INA186A1IDCKR

Texas Instruments INA186A1IDCKR — Precision Bidirectional Current‑Sense Amplifier, 25 V/V Gain in SC‑70‑6 (DCK)

The Texas Instruments INA186A1IDCKR is a precision, bidirectional, zero-drift current‑sense amplifier tailored for tight board spaces and low-power designs. As part of TI’s INA186 family, the A1 gain option delivers a fixed 25 V/V gain, making it straightforward to translate a small shunt voltage into a clean analog output for monitoring, protection, and control loops. Operating from a 1.7 V to 5.5 V supply and housed in a compact SC‑70‑6 (DCK) package, the INA186A1IDCKR is an efficient choice for engineers building battery-powered systems, power supplies, motor drivers, and embedded instrumentation.

This article consolidates key facts and sourcing guidance for the Texas Instruments INA186A1IDCKR so you can evaluate fit, plan your BOM, and streamline procurement without bouncing between multiple references.

At a Glance

• Brand / Manufacturer: Texas Instruments
• MPN: INA186A1IDCKR
• Series: INA186
• Category: Current Sense Amplifiers
• Architecture: Zero-drift instrumentation amplifier (current-sense)
• Sensing Direction: Bidirectional
• Fixed Gain: 25 V/V (A1 option)
• Channels: 1
• Output Type: Analog voltage
• Supply Voltage: 1.7 V to 5.5 V
• Package: SC‑70‑6 (DCK)
• Pin Count: 6
• Mounting: Surface mount
• Packaging: Tape & Reel (TR)
• Operating Temperature Range: −40°C to +125°C
• Lifecycle Status: Active
• RoHS Status: RoHS Compliant
• Datasheet: https://www.ti.com/lit/ds/symlink/ina186.pdf
• Product Page: https://www.ti.com/product/INA186

Why Designers Choose the INA186A1IDCKR

• Precision without drift: The zero‑drift architecture minimizes offset and temperature drift, improving accuracy over temperature and time. That stability is especially beneficial in low-shunt, low-signal applications where microvolts matter.
• Simple scaling: The A1 variant’s fixed 25 V/V gain provides predictable scaling from shunt voltage to output voltage, easing firmware thresholds and analog comparator settings.
• Works across low-voltage rails: With a 1.7 V to 5.5 V supply range, the Texas Instruments INA186A1IDCKR integrates well with modern low-voltage MCUs and PMICs.
• Compact and BOM‑friendly: The tiny SC‑70‑6 (DCK) package reduces footprint and enables current sensing close to the load or supply rail, helping with noise performance and layout flexibility.
• Bidirectional measurement: Monitor charge/discharge, source/sink, or forward/reverse conditions with a single device in designs that need to track current flow in both directions.

Key Specifications

• Amplifier type: Current‑sense, zero‑drift
• Sensing direction: Bidirectional
• Gain (fixed): 25 V/V (A1 option)
• Number of channels: 1
• Output type: Analog voltage
• Supply voltage: 1.7 V to 5.5 V
• Operating temperature range: −40°C to +125°C
• Package code: DCK (SC‑70‑6)
• Package/pin count: 6 pins
• Mounting type: Surface mount
• Packaging format: Tape & Reel (TR)

Note: For detailed electrical characteristics (for example, input common‑mode limits, bandwidth, input offset, CMRR, and noise), refer to the official TI datasheet. Values beyond the attributes above are not specified here.

Typical Applications

• Power monitoring and control: Measure load current to enable dynamic power management, fault detection, and efficiency tuning.
• Battery‑powered systems: Track charge and discharge conditions in portable electronics, IoT nodes, and handheld instruments.
• Motor and load current sensing: Observe current in brushed/brushless motor drives, pumps, fans, and actuators for protection and closed‑loop control.
• DC/DC converters and power supplies: Implement output current monitoring, current limit, and telemetry in point‑of‑load regulators and system power trees.

These applications exploit the INA186A1IDCKR’s precision, small footprint, and bidirectional measurement to enhance safety, efficiency, and insight without significant board‑area or power penalties.

Design‑In Considerations

The following are general best practices for integrating a precision bidirectional current‑sense amplifier like the Texas Instruments INA186A1IDCKR. Always validate final design details against the TI datasheet and your specific operating conditions.

• Choose an appropriate shunt resistor: Select a value that yields a measurable sense voltage at peak current while limiting power dissipation. Verify the resistor’s tolerance, temperature coefficient, and power rating.
• Use Kelvin connections: Route separate sense traces from the shunt resistor terminals directly to the INA186A1IDCKR inputs to minimize parasitic drops and improve accuracy.
• Keep inputs symmetric and short: Match trace lengths and keep the input pair tightly coupled to reduce pickup. Place the amplifier close to the shunt.
• Add input filtering as needed: If your environment is noisy, an RC filter can help. Ensure the filter’s impedance and cutoff frequency are compatible with amplifier stability and response requirements. Consult the datasheet’s guidance before adding input networks.
• Maintain a clean ground and supply: Provide local decoupling near the INA186A1IDCKR supply pin and consider analog ground planes and star grounding in mixed‑signal designs.
• Validate measurement range: Confirm that your expected shunt voltage and the device’s fixed 25 V/V gain produce output voltages within your ADC’s input range and the amplifier’s output swing limits as specified in the TI datasheet.
• Confirm topology suitability: Current‑sense amplifiers can be used in various placements (for example, on supply or return paths). Ensure that your placement and expected common‑mode conditions align with the device’s requirements as documented by TI.
• Thermal awareness: Even in compact packages, thermal behavior matters. Check resistor self‑heating and PCB copper areas to maintain accuracy over temperature.

These practices help translate the INA186A1IDCKR’s precision into real‑world system accuracy and robustness.

Lifecycle, Compliance, and Supply Chain Snapshot

• Lifecycle status: Active (source: Texas Instruments product page)
• RoHS status: RoHS Compliant
• Environmental/operating temperature: −40°C to +125°C
• Packaging for shipment: Tape & Reel (TR)

Sourcing notes:

• Inventory: Current channel inventory referenced here shows 0 units available; availability fluctuates. Engage authorized TI distributors and TI’s product page notifications for the latest stock and lead times.
• Pricing: Availability and pricing vary by distributor. Check TI and authorized distributors for current quotes.
• Replacement/crosses: No manufacturer‑specified replacements are listed in the provided data. If you require a different gain or package, review the broader INA186 family on TI’s site.

Ordering Information

• Part number: INA186A1IDCKR (Texas Instruments)
• Family/Series: INA186
• Gain option: A1 = 25 V/V fixed gain
• Function: Precision bidirectional current‑sense amplifier (zero‑drift)
• Channels: 1
• Output: Analog voltage
• Supply voltage: 1.7 V to 5.5 V
• Package: SC‑70‑6 (DCK), 6 pins
• Mounting: Surface mount
• Shipment packaging: Tape & Reel (TR)
• Operating temperature: −40°C to +125°C

Tip: If your design requires a different fixed gain, explore other INA186 variants on the TI product page to select the gain setting that matches your desired input‑to‑output scaling. Confirm suffix conventions and packing codes before placing orders.

Where the INA186A1IDCKR Fits in Your Architecture

• Battery management and charging: Bidirectional measurement can track charge and discharge currents for protection, state‑of‑charge algorithms, and performance analytics.
• Motor control loops: Measuring current at the driver output enables current limiting, torque estimation, and over‑current shutdown logic.
• Point‑of‑load power rails: Use the analog output to feed an MCU ADC or an analog comparator for telemetry or fault response.
• Industrial and building automation: Add current monitoring to valves, relays, or sensors to detect stalls, shorts, or degraded conditions.

Because the Texas Instruments INA186A1IDCKR operates from 1.7 V to 5.5 V and comes in a very small package, it integrates easily into compact controllers, wearable devices, and space‑constrained industrial modules where every square millimeter counts.

Benefits for Engineers, Buyers, and Sourcing Managers

• For hardware engineers: Fixed‑gain simplicity and zero‑drift performance reduce calibration overhead and help preserve accuracy across temperature. The small footprint simplifies placement near the shunt.
• For firmware and systems teams: The consistent analog output simplifies thresholds for protection and telemetry and fits directly into MCU ADC front ends.
• For buyers and sourcing managers: The part is listed as Active and RoHS Compliant, with standard Tape & Reel packaging. If your AVL already includes Texas Instruments, qualification is straightforward. Keep an eye on distributor stock and consider demand‑pull forecasts due to compact package popularity.

FAQs

• What is the fixed gain of the Texas Instruments INA186A1IDCKR? 25 V/V (A1 gain option).
• Is the INA186A1IDCKR bidirectional? Yes, it supports bidirectional current sensing.
• What supply voltage does it require? 1.7 V to 5.5 V.
• What is the package and pin count? SC‑70‑6 (DCK), 6 pins, surface‑mount.
• What is the output type? Analog voltage.
• How many channels does it have? One.
• What is the operating temperature range? −40°C to +125°C.
• Is it RoHS compliant? Yes, RoHS Compliant.
• What is the lifecycle status? Active, per the Texas Instruments product page reference.
• Does the datasheet specify high‑side or low‑side placement? Not specified here; consult the TI datasheet for placement guidance and common‑mode limits.
• Are there manufacturer‑listed replacements? None are listed in the provided data. Review the INA186 family for other fixed‑gain options if needed.

Resources

• Texas Instruments INA186 Product Page: https://www.ti.com/product/INA186
• INA186 Datasheet (TI): https://www.ti.com/lit/ds/symlink/ina186.pdf

Summary

The Texas Instruments INA186A1IDCKR is a compact, precision, bidirectional current‑sense amplifier with a fixed 25 V/V gain and a wide 1.7 V to 5.5 V supply range. Built on a zero‑drift architecture and offered in the tiny SC‑70‑6 (DCK) package, it is a strong fit for power monitoring, battery‑powered devices, motor and actuator control, and DC/DC converter telemetry. With Active lifecycle status and RoHS compliance, the INA186A1IDCKR streamlines both engineering decisions and procurement. Pair the device with a well‑chosen shunt resistor, follow sound layout practices, and refer to the TI datasheet for electrical limits to achieve consistent, accurate current measurements in compact, modern systems.