INA213BQDCKRQ1 - 26V Bidirectional Current-Sense IC | TI
MPN: INA213BQDCKRQ1 ✓ Active| Qty | Unit Price | Extended |
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INA213BQDCKRQ1 Overview
A current-sense amplifier, also called a current-shunt monitor, is a specialized instrumentation amplifier that measures current indirectly from the voltage drop across a precision shunt resistor. INA213-Q1 belongs to the voltage-output current-shunt-monitor family within instrumentation amplifiers and power-measurement ICs. Its bidirectional measurement supports both positive and negative current flow, making it suitable for motor, battery, automotive, and industrial power-control systems.
Verified manufacturer and distributor data identify the INA213BQDCKRQ1 as a 26V, AEC-Q100, high-precision current-sense amplifier. The device supports low-side or high-side measurement, and the official part page identifies the DCK package as a 6-pin SOT-SC70 package. The automotive-grade ordering suffix is consistent with the AEC-Q100 qualification stated by Texas Instruments.
The INA21x-Q1 family is intended for applications requiring accurate current measurement across a shunt while the sensed node may sit at a substantially different voltage from the measurement ground. This allows current monitoring in batteries, motor-control systems, electronic loads, power supplies, and automotive electrical systems without placing the shunt at ground potential. The output voltage must remain within the device's valid operating and output limits, so the system designer should verify supply, common-mode, shunt, and output-headroom constraints from the manufacturer datasheet.
Typical uses include bidirectional battery-current measurement, DC motor current sensing, solenoid and actuator monitoring, power-supply load current reporting, industrial control input sensing, and automotive load diagnostics. Because the part is bidirectional, it can report charge and discharge current with one signal path rather than requiring separate positive and negative measurement channels.
The primary design consideration is the relationship between shunt resistance, sensed current, amplifier gain, input range, and output swing. A higher shunt resistance produces a larger differential signal and can improve measurement resolution, but it also increases power dissipation in the shunt. The PCB should keep the high-current shunt path separate from sensitive input traces, use a low-error reference resistor network, and provide stable supply bypassing close to the device. This page combines verified source data with engineering guidance while clearly identifying parameters that require confirmation from the manufacturer datasheet.
Drop-in alternatives for INA213BQDCKRQ1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
INA199A1DCKT
✅ Drop-In📋 Reference alternative (not in catalog)
INA199A2DCKT
✅ Drop-In📋 Reference alternative (not in catalog)
INA211BQDCKRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
INA199A1DCKR
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INA199A2DCKR
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INA213BQDCKRQ1 Maximum Ratings & Electrical Characteristics
| Product Type | Voltage-output bidirectional current-shunt monitor |
| Common-Mode Voltage Range | -0.3 V to 26 V |
| Automotive Qualification | AEC-Q100 |
| Output Type | Single-ended voltage output |
| Bidirectional Measurement | Yes |
| Shunt Measurement | Low-side or high-side |
| Package | SC-70 DCK, 6 pins |
| Package Type | SOT-SC70 |
| Operating Temperature Range | -40 °C to +125 °C |
| RoHS Status | unknown |
| REACH Status | unknown |
| Lead-Free Status | unknown |
| Datasheet Revision | Rev. K |
INA213BQDCKRQ1 sot-sc70 Pin Configuration Guide
Pin configuration for INA213BQDCKRQ1 (sot-sc70 package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for INA213BQDCKRQ1.
Refer to the datasheet for full pin configuration.
Typical Applications
INA213BQDCKRQ1 is suitable for 6 applications: Automotive Battery Current Monitoring, DC Motor Current Sensing, Battery Charger Charge and Discharge Control, Industrial Power-Supply Load Monitoring, Motor and Solenoid Fault Detection, Test and Measurement Current Probes.
Automotive Battery Current Monitoring
The INA213BQDCKRQ1 fits automotive battery monitoring because it is identified as an AEC-Q100, 26V, bidirectional current-shunt monitor. Place it across a high-side or low-side shunt so the measured voltage represents charge and discharge current without requiring separate sensing paths. Its -0.3V to 26V common-mode range is useful when the shunt sits above ground, although the final design must verify output headroom, shunt power, supply limits, and fault-current behavior.
Recommended
DC Motor Current Sensing
Use the INA213BQDCKRQ1 to measure motor current in a DC motor controller when the system needs bidirectional feedback for torque, stall, or overcurrent detection. Its voltage output can feed an ADC or control comparator, while the common-mode specification supports shunt placement outside a strict ground return. Confirm the shunt resistance against maximum motor current because shunt dissipation rises with current squared, and verify that transient motor voltage remains within the device's stated limits.
Recommended
Battery Charger Charge and Discharge Control
The bidirectional INA213BQDCKRQ1 is suitable for charger and power-path controllers that need to report charging, discharge, and regeneration current. A shunt in either the high-side or low-side conductor produces a differential measurement while the monitor converts it to a ground-referenced analog signal. Because current polarity is supported, one sensing channel can support both charge-direction and discharge-direction control. Validate the output voltage range, ADC scaling, shunt temperature coefficient, and maximum fault current before production release.
Recommended
Industrial Power-Supply Load Monitoring
The INA213BQDCKRQ1 can provide precise load-current feedback in industrial power supplies, DC distribution modules, and electronic loads. Its 26V common-mode capability allows measurement of a shunt placed on a higher-potential conductor, and the bidirectional response helps identify positive or negative power flow. Use Kelvin-style sense connections, minimize trace impedance mismatch, and confirm amplifier bandwidth and output settling against the switching or fault-detection bandwidth required by the system.
Recommended
Motor and Solenoid Fault Detection
For solenoids, actuators, pumps, and motor-control stages, the INA213BQDCKRQ1 can monitor current continuously and provide an analog signal for overload, stall, short-circuit, or abnormal-load detection. Bidirectional sensing can retain useful information if current reverses during regeneration or braking. Select the shunt resistance carefully so normal operating current remains within the output range while the shunt and amplifier tolerances provide adequate fault-detection margin.
Recommended
Test and Measurement Current Probes
The INA213BQDCKRQ1 can serve as the analog front end for a compact bidirectional current-measurement instrument. Its -0.3V to 26V common-mode range supports laboratory and industrial measurements where the shunt is not necessarily at ground, while the single-ended output simplifies connection to an ADC or meter input. For accurate measurements, account for shunt tolerance, amplifier gain and offset, reference accuracy, thermal drift, input filtering, and the dynamic range of the downstream converter.
Recommended
Engineering reference data for INA213BQDCKRQ1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | INA199A1DCKT | INA199A2DCKT | INA211BQDCKRQ1 |
|---|---|---|---|---|
| Package | SC-70 DCK, 6 pins | SC-70 DCK, 6 pins | SC-70 DCK, 6 pins | SC-70 DCK, 6 pins |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
Key Differentiators
- Verified automotive qualification (vs INA211BQDCKRQ1)
- Bidirectional current measurement (vs INA199A1DCKT)
- High-side and low-side measurement support (vs INA199A2DCKT)
Design Notes
Route the two shunt sense connections as a short, closely coupled pair from the shunt's dedicated Kelvin pads directly to the INA213BQDCKRQ1 inputs. Keep the high-current path physically separate from the sense traces, and avoid routing beneath switching nodes or inductors. Because the supplied data confirms the DCK package but not its manufacturer land pattern, use the official TI package drawing and footprint for PCB release.
Do not assume that a common-mode rating automatically permits any shunt current. Check maximum current, shunt resistance, shunt power dissipation, amplifier output swing, supply voltage, and the downstream ADC range together. A larger shunt improves signal level but increases I²R heating, while a smaller shunt reduces dissipation but can reduce resolution; the correct value depends on the required measurement range and fault conditions.
Place the amplifier's supply bypass capacitor close to its supply pin and keep the reference network and sensitive input nodes away from high dv/dt power paths. Use a continuous ground or chassis-related return appropriate to the system, and verify whether filtering is required around the sense lines. These practices reduce errors caused by common-mode coupling, reference noise, and switching-node capacitive pickup, although exact component values must be selected from the manufacturer guidelines.
Compliance Information
Texas Instruments and distributor search results identify the INA213-Q1 family as AEC-Q100 qualified. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status are not stated in the supplied verified data.
