INA210BQDCKRQ1 - AEC-Q100 26V Bi-Directional Current Sense Amp | TI
部品番号: INA210BQDCKRQ1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.41 | $141.00 |
| 500 | $1.21 | $605.00 |
| 1,000 | $1.05 | $1,050.00 |
| 3,000 | $0.92 | $2,760.00 |
INA210BQDCKRQ1 概要
A current sense amplifier is a specialized analog building block that converts a small differential voltage developed across a current-sense (shunt) resistor into a ground-referenced, amplified output voltage. It sits in the signal chain between the shunt resistor (placed in series with the load) and the downstream ADC, microcontroller, or comparator, and belongs to the broader hierarchy of instrumentation amplifiers -> operational amplifiers -> analog ICs. Zero-drift chopper-stabilized topology enables the INA210 family to achieve microvolt-level offset and excellent common-mode rejection.
Key features include a maximum offset voltage of 35 uV, a gain error of only 0.5 percent (max), and 40 kV/us slew rate, plus a 2.7 V to 26 V supply range with 65 uA typical quiescent current. The device offers bidirectional sensing (REF input allows positive or negative current measurement), operates from -40C to +125C, and integrates EMI filtering plus thermal shutdown. The SC70-6 package occupies roughly 2.1 mm x 1.45 mm of PCB area, ideal for compact automotive modules.
The INA210 uses a chopper-stabilized input stage and precision thin-film resistors to achieve gain accuracy and ultra-low offset drift over temperature. Its high common-mode rejection ratio (CMRR) of 140 dB and the ability to operate with the input common-mode above V+ make it tolerant of inductive loads, motor inrush, and 12 V/24 V automotive transients such as load-dump.
Typical applications include automotive body electronics (battery management, ECU power monitoring), motor control current loops, solenoid and valve actuation feedback, USB Type-C current advertisement (BC 1.2), and precision 48 V telecom/industrial rails. The combination of AEC-Q100 qualification, wide common-mode range, and small package makes it especially well-suited for safety-relevant automotive systems.
When designing with this device, place the shunt resistor close to the input pins to minimize parasitic resistance, use Kelvin connection to the shunt, and add a small RC filter at the output to limit noise bandwidth. Choose the shunt value so that the maximum differential input (Vshunt_max = VSENSE_max / 200) does not exceed the linear input range, accounting for transient overloads.
This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: INA210BQDCKRQ1 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
INA211BQDCKRQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
INA212BQDCKRQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
INA210BIDCKT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
INA180A1QDCKRQ1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
INA181A1QDCKRQ1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
INA210BQDCKRQ1 最大定格＆電気的特性
| 機能 | Current Sense Amplifier (Current-Shunt Monitor) |
| チャネル数 | 1 |
| 出力タイプ | Single-Ended, Voltage Output |
| Direction | Bidirectional (REF pin sets zero-current level) |
| Gain | 200 V/V |
| Common-Mode Input Range | -0.3 V to +26 V |
| Supply Voltage Range | 2.7 V to 26 V |
| 静止電流 | 65 uA (typical) |
| Maximum Offset Voltage | 35 uV |
| Gain Error | 0.5 % (max) |
| CMRR | 140 dB |
| Slew Rate | 40 kV/us |
| 動作温度範囲 | -40 C to +125 C |
| パッケージ | SOT-SC70-6 (DCK) |
| 実装タイプ | Surface Mount |
| MSLレベル | 2 |
| Automotive Qualification | AEC-Q100 |
| RoHS ステータス | Compliant |
INA210BQDCKRQ1 ピン構成
| ピン 1 | REF — Reference voltage input (sets zero-current output level for bidirectional sensing) |
| ピン 2 | IN- — Inverting current-sense input (low side of shunt) |
| ピン 3 | IN+ — Non-inverting current-sense input (high side of shunt) |
| ピン 4 | GND — Ground |
| ピン 5 | OUT — Amplified output voltage |
| ピン 6 | VS+ — Positive supply voltage (2.7 V to 26 V) |
主な用途
INA210BQDCKRQ1 の用途: 6 件s: Automotive Battery Management Current Monitoring, Motor Control Phase Current Sensing, Solenoid and Valve Actuation Feedback, USB Type-C VBUS Current Advertisement, Industrial 24 V Solenoid and Sensor Power Rails, Telecom 48 V Hot-Swap Controller Feedback.
Automotive Battery Management Current Monitoring
The INA210BQDCKRQ1 is a natural fit for 12 V automotive battery management because its -0.3 V to +26 V common-mode range covers cold-crank, jump-start, and load-dump transients, while AEC-Q100 qualification and the SC70-6 footprint allow dense PCB layouts inside the BCM or battery sensor module. With a fixed gain of 200 V/V and 35 uV max offset, the device accurately resolves shunt currents down to tens of mA, supporting state-of-charge estimation algorithms. Place the part between the shunt and the MCU's ADC, drive the REF pin with a half-supply DAC for bidirectional charging/discharging sensing, and add an RC output filter to limit noise bandwidth. Compared with discrete op-amp solutions, the INA210BQDCKRQ1 eliminates the precision resistor pair and trims required for high CMRR.
おすすめ
Motor Control Phase Current Sensing
For brushed DC motor current loops in automotive body electronics such as window lifters, seat adjusters, and HVAC actuators, the INA210BQDCKRQ1 provides the AEC-Q100 grade and zero-drift accuracy needed for closed-loop torque control. The device's 40 kV/us slew rate and 100 kHz small-signal bandwidth track PWM current ripples well above 10 kHz switching frequencies. Use a 5-10 mOhm shunt in series with the low-side FET, route Kelvin connections directly to the IN+ and IN- pins, and place a 10 nF ceramic bypass near VS+. Designers often choose the INA210BQDCKRQ1 over the INA240-Q1 here because there is no PWM common-mode transient on a low-side topology.
おすすめ
Solenoid and Valve Actuation Feedback
Solenoid drivers in transmission shift valves, EGR systems, and emission control actuators require precise current feedback to detect open/closed positions and end-of-travel. The INA210BQDCKRQ1's 200 V/V gain lets designers use a small 10 mOhm shunt in the high-side path while still resolving mA-level coil current through a 12 V or 24 V supply. Its 35 uV max offset keeps position-detection thresholds stable across -40 C to +125 C, and the SC70-6 package fits inside the solenoid housing or on compact valve-controller PCBs. Reference the output to 1.65 V via a resistor divider on REF to enable bidirectional current measurement during pull-in and hold phases.
おすすめ
USB Type-C VBUS Current Advertisement
USB Type-C ports require accurate VBUS current monitoring for BC 1.2, USB-PPS, and proprietary fast-charge protocols. The INA210BQDCKRQ1 with its 26 V common-mode range and 200 V/V gain can sense up to 5 A safely through a 10 mOhm shunt, providing the precision needed to advertise correct current capability to the attached device. The AEC-Q100 qualification supports in-cabin charger applications, and the SC70-6 footprint keeps the BOM small for space-constrained Type-C connector PCAs. Drive the REF pin with the same 1.0 V reference used by the ADC to provide a single-ended, ground-referenced output.
おすすめ
Industrial 24 V Solenoid and Sensor Power Rails
Beyond automotive, the INA210BQDCKRQ1's 26 V common-mode range covers 24 V industrial supply rails used in PLCs, factory automation I/O modules, and process-control transmitters. The chopper-stabilized front end rejects 50 Hz/60 Hz line noise that would otherwise corrupt DC current measurements, while the AEC-Q100 qualification provides extra reliability margin in demanding industrial environments. With a 1 mOhm shunt, the device can monitor full load currents up to 25 A, making it suitable for valve, contactor, and actuator feedback loops in industrial cabinets where service temperature can reach +85 C ambient.
おすすめ
Telecom 48 V Hot-Swap Controller Feedback
Although telecom systems typically run at -48 V, many modern data-center and 5G base-station power shelves use +48 V or +54 V bulk rails that need accurate current monitoring during hot-swap events. The INA210BQDCKRQ1 can be used on the low-side return path of these rails where its 26 V common-mode limit is sufficient for ground-referenced sense resistors. Combined with a hot-swap controller such as the TPS2474x, the device enables fast, accurate current-limit loops that protect MOSFETs from inrush transients. The SC70-6 footprint keeps it out of the way of high-current copper pours.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: INA210BQDCKRQ1 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | INA211BQDCKRQ1 | INA212BQDCKRQ1 | INA210BIDCKT | INA180A1QDCKRQ1 | INA181A1QDCKRQ1 |
|---|---|---|---|---|---|---|
| Package | SOT-SC70-6 (DCK) | SOT-SC70-6 (DCK) - same | SOT-SC70-6 (DCK) - same | SOT-SC70-6 (DCK) - same | SOT-SC70-6 (DCK) - same | SOT-SC70-6 (DCK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Gain (V/V) | 200 | 500 | 1000 | 200 | 20 | 20 |
| Common-Mode Range | -0.3 V to +26 V | -0.3 V to +26 V | -0.3 V to +26 V | -0.3 V to +26 V | -0.2 V to +26 V | -0.2 V to +26 V |
| Maximum Offset Voltage | 35 uV | 35 uV | 35 uV | 35 uV | 150 uV | 150 uV |
| Direction | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Unidirectional | Unidirectional |
| AEC-Q100 Qualified | Yes | Yes | Yes | No | Yes | Yes |
| Quiescent Current (typ) | 65 uA | 65 uA | 65 uA | 65 uA | 260 uA | 260 uA |
主な差別化要因
- Highest gain (200 V/V) in the SC70-6 INA21x-Q1 family for large-shunt low-current sensing （vs INA211BQDCKRQ1 (500 V/V) and INA212BQDCKRQ1 (1000 V/V))
- Zero-drift chopper topology with 35 uV max offset （vs INA180A1QDCKRQ1 (150 uV offset))
- Bidirectional sensing via dedicated REF pin （vs INA180A1QDCKRQ1 / INA181A1QDCKRQ1 (unidirectional only))
- AEC-Q100 qualification in the smallest automotive-grade current sense footprint (SC70-6) （vs INA210BIDCKT (non-automotive))
設計ノート
Use a true Kelvin (4-wire) connection from the shunt resistor to the IN+ and IN- pins. Any shared trace segment between the two inputs adds series resistance and corrupts the differential measurement. Route the REF pin trace away from noisy PWM signals and bypass it with a 0.1 uF ceramic capacitor if the reference is derived from a switching regulator. Place a 0.1 uF ceramic bypass as close as possible to the VS+ pin, and add a bulk 1 uF capacitor within 5 mm to handle transient loads.
The zero-drift chopper architecture of the INA210BQDCKRQ1 produces small charge-injection transients at the chopping frequency (typically ~250 kHz). Adding an RC filter at the OUT pin (e.g., 100 ohm + 1 nF) reduces the output noise bandwidth to about 1.6 kHz and eliminates aliasing into the downstream ADC. With the 200 V/V gain, expect roughly 1.5 mV output noise referred to OUT in the 0.1 Hz to 10 kHz band - well below the offset and gain-error floors.
Estimated: at a 5 V supply, the linear input range of the INA210BQDCKRQ1 is roughly +/-25 mV differential (200 V/V gain, +/-5 V swing at OUT). For higher differential inputs, choose the INA211BQDCKRQ1 (500 V/V, +/-10 mV) or INA212BQDCKRQ1 (1000 V/V, +/-5 mV). Exceeding the linear range saturates the output but does not latch the device. For high-side sensing, account for the common-mode voltage drop across the sense resistor when sizing the supply headroom.
Quiescent current is 65 uA typical across the full 2.7 V to 26 V supply range, making the INA210BQDCKRQ1 usable in always-on automotive applications. Adding a series ferrite bead on VS+ and a TVS such as SMAJ26A on the supply pin protects against ISO 7637-2 transient pulses and reverse-battery events common in 12 V automotive systems. Place the TVS close to the connector to limit fault energy reaching the IC.
コンプライアンス情報
AEC-Q100 Grade 1 qualified per TI datasheet; -Q1 suffix confirms automotive disposition package. RoHS and REACH compliance per TI product page. Halogen-free per TI MSL report.
