INA200AIDGKR - -16 to 80V High-Side Current-Shunt Monitor | TI
料号： INA200AIDGKR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.42 | $2.42 |
| 10 | $2.16 | $21.60 |
| 100 | $1.78 | $178.00 |
| 500 | $1.45 | $725.00 |
| 1,000 | $1.12 | $1,120.00 |
INA200AIDGKR 概述
What is a current-shunt monitor? A current-shunt monitor is a type of analog IC that measures current flowing through an external shunt resistor placed in series with a load. By amplifying the small differential voltage across the shunt, it converts load current into a ground-referenced output voltage that an MCU or ADC can read directly. Current-shunt monitors sit in the signal-conditioning hierarchy between the shunt resistor and the ADC, are a subset of current-sense amplifiers, and belong to the broader power management IC category used in nearly every battery-powered and industrial system.
Key features include a gain of 20 V/V (INA200), an open-drain comparator with internal 0.6 V threshold, latching capability made transparent by grounding/leaving RESET open, and independent operation from a 2.7 V to 18 V supply that is decoupled from the high-voltage common-mode bus. The wide -16 V to 80 V common-mode range is a defining attribute because it allows the IC to survive negative transients common in inductive loads (motors, solenoids) and high-voltage rails up to 80 V typical of telecom, automotive 48 V, and industrial 72 V systems. The integrated comparator eliminates the need for an external threshold detector, simplifying PCB area and BOM cost.
The INA200AIDGKR uses a precision bipolar input front end with thin-film resistor scaling to deliver low offset drift and stable gain across temperature. The internal reference drives the comparator at 0.6 V; an external resistor divider scales this threshold to any desired current trip point. The output stage drives an open-drain flag pin that can be wire-ORed with other alerts and pulled up to the system logic rail.
Typical applications include motor stall detection, solenoid/valve overcurrent protection, USB port current monitoring, telecom -48 V supply protection, lithium-ion battery charge/discharge monitoring, and industrial PLC digital inputs. When designing with the INA200AIDGKR, pay close attention to PCB layout: route the differential Kelvin sense traces directly to the shunt and use a 0.1 uF bypass capacitor close to the V+ pin. This page synthesizes distributor pricing, drop-in INA20x family alternatives, and PCB layout guidance not found on the manufacturer product page alone.
直接替换替代料： INA200AIDGKR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
INA201AIDGKR
✅ 直接替换📋 参考替代料（不在目录中）
INA202AIDGKR
✅ 直接替换📋 参考替代料（不在目录中）
INA200AIDGKT
✅ 直接替换📋 参考替代料（不在目录中）
INA200AIDG4
✅ 直接替换📋 参考替代料（不在目录中）
INA200AIDGK
✅ 直接替换📋 参考替代料（不在目录中）
INA200Q1AIDGKR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
INA203AIDGKR
✅ 直接替换📋 参考替代料（不在目录中）
INA204AIDGKR
✅ 直接替换📋 参考替代料（不在目录中）
INA200AIDGKR 规格参数
| 功能 | High-side current-shunt monitor with open-drain comparator |
| Common-Mode Input Range | -16 V to 80 V |
| Supply Voltage Range (V+) | 2.7 V to 18 V |
| Gain (INA200) | 20 V/V |
| Bandwidth | 500 kHz |
| Maximum Supply Current | 1800 uA |
| Comparator Reference Voltage | 0.6 V (internal) |
| Comparator Output Type | Open-drain with latch / RESET |
| 工作温度范围 | -40 C to +125 C |
| 封装 | VSSOP-8 (DGK), 3.00 mm body width |
| 安装类型 | Surface Mount |
| MSL 等级 | 2 (1 year floor life) |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
| 输出类型 | Analog voltage (gain) plus open-drain flag |
INA200AIDGKR 引脚配置
| 引脚 1 | IN+ — Positive differential sense input (connect to shunt high side) |
| 引脚 2 | IN- — Negative differential sense input (connect to shunt low side) |
| 引脚 3 | V+ — Supply voltage, 2.7 V to 18 V |
| 引脚 4 | GND — Ground reference for supply and analog output |
| 引脚 5 | OUT — Analog output voltage proportional to sensed current |
| 引脚 6 | RESET — Comparator latch reset, tie low for transparent mode |
| 引脚 7 | CMPOUT — Open-drain comparator output (flag) |
| 引脚 8 | NC — Not connected (per datasheet) |
典型应用
INA200AIDGKR 适用于 6 应用s: Motor Stall and Overcurrent Detection, Solenoid and Valve Current Monitoring, Telecom -48 V Supply Protection, USB Type-C VBUS Current Monitoring, Lithium-Ion Battery Pack Monitoring, Industrial 24 V PLC Digital Output Monitoring.
Motor Stall and Overcurrent Detection
The INA200AIDGKR is ideal for brushed DC motor stall detection in 12 V to 48 V systems. The wide -16 V to 80 V common-mode range lets the sense amplifier sit directly on the high-side rail, measuring current through a low-side or high-side shunt while surviving the inductive flyback of stalled motors. The integrated comparator with internal 0.6 V reference, combined with external resistor dividers, lets you set a precise stall-current threshold (for example, 10 A using a 5 mOhm shunt and divider ratio of 110:1). The open-drain CMPOUT pin can drive an MCU interrupt or directly disable a motor-driver FET gate within microseconds of a stall event, protecting windings from thermal damage.
推荐
Solenoid and Valve Current Monitoring
Solenoids and proportional valves in industrial automation draw high inrush currents that must be monitored to detect coil shorts or stuck valves. The INA200AIDGKR senses current through a high-side shunt with its -16 V to 80 V common-mode range, surviving the back-EMF kick that occurs when the solenoid is de-energized. The 500 kHz bandwidth captures the inrush pulse accurately so the MCU can apply soft-start control and detect coil shorts within a few switching cycles. The integrated comparator latches CMPOUT on fault, and the RESET pin allows the system controller to clear the latch after confirming the solenoid has released, preventing nuisance trips in noisy environments.
推荐
Telecom -48 V Supply Protection
Telecom systems operate from -48 V battery plants with return-path grounding. The INA200AIDGKR is uniquely suited for this because of its -16 V to 80 V common-mode range, which accommodates the full negative-rail range with margin for transient spikes. Place a 10 mOhm shunt in series with the load return, sense across it with IN+/IN-, and the INA200 will produce a ground-referenced analog voltage proportional to load current. The integrated comparator can flag blown fuses, shorted -48 V cables, or load disconnection. Because the supply (V+) is powered from a separate 3.3 V or 5 V rail, the IC continues to operate even when the -48 V plant is heavily loaded.
推荐
USB Type-C VBUS Current Monitoring
USB Type-C ports can deliver up to 5 A at 20 V (100 W under USB PD), and accurate current monitoring is essential for source-capability advertisement and fault detection. The INA200AIDGKR placed on the VBUS high-side rail with a 10 mOhm Kelvin shunt provides the USB PD controller (Port Controller) with an analog voltage proportional to port current. The integrated comparator can flag over-current at the programmed threshold (typically 5 A or 3 A) using a simple resistor divider on the 0.6 V internal reference. The -16 V to 80 V common-mode range easily handles the 20 V USB PD voltage and the transient spikes that occur when hot-plug events happen.
推荐
Lithium-Ion Battery Pack Monitoring
Multi-cell lithium-ion battery packs require precise charge and discharge current monitoring for state-of-charge estimation, cell-balancing decisions, and safety cutoffs. The INA200AIDGKR placed on the high side of the pack measures both charge and discharge currents with its bidirectional capability when paired with an external reference. The -16 V to 80 V common-mode range covers 4S to 16S battery packs at full charge. The integrated comparator enables fast over-current disconnect, while the OUT pin provides a continuous analog reading to the battery management MCU. Use a 1 mOhm to 5 mOhm low-inductance shunt for best accuracy and thermal performance.
推荐
Industrial 24 V PLC Digital Output Monitoring
Industrial PLC digital outputs drive 24 V loads such as relays, lamps, and small actuators. The INA200AIDGKR provides per-channel current monitoring and short-circuit detection in a compact VSSOP-8 footprint that fits easily on the output module PCB. The 500 kHz bandwidth captures fast short-circuit transients, and the open-drain CMPOUT pin can be wire-ORed across channels to drive a single fault input to the PLC backplane. The integrated 0.6 V reference allows precise current thresholds at common trip points (500 mA, 1 A, 2 A) with simple resistor dividers. Wide temperature range of -40 C to +125 C ensures reliable operation in unheated control cabinets.
推荐
推荐产品汇总
工程参考数据： INA200AIDGKR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | INA201AIDGKR | INA202AIDGKR | INA200AIDGKT | INA200AIDG4 | INA200AIDGK | INA200Q1AIDGKR | INA203AIDGKR | INA204AIDGKR |
|---|---|---|---|---|---|---|---|---|---|
| Package | VSSOP-8 (DGK) | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same | VSSOP-8 (DGK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Current-Sense Gain | 20 V/V | 50 V/V | 100 V/V | 20 V/V (same die) | 20 V/V (same die) | 20 V/V (same die) | 20 V/V (same die, AEC-Q100) | 20 V/V + 2nd alert | 20 V/V + dual comparator |
| Common-Mode Range | -16 V to 80 V | -16 V to 80 V | -16 V to 80 V | -16 V to 80 V | -16 V to 80 V | -16 V to 80 V | -16 V to 80 V | -16 V to 80 V | -16 V to 80 V |
| Integrated Comparator | Yes (single, open-drain, latching) | Yes (single, open-drain, latching) | Yes (single, open-drain, latching) | Yes (same die) | Yes (same die) | Yes (same die) | Yes (same die) | Yes (dual alert) | Yes (dual comparator) |
| Bandwidth | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz | 500 kHz |
| Automotive Grade | No | No | No | No | No | No | Yes (AEC-Q100) | No | No |
| Packaging Format | Tape & Reel (DGKR) | Tape & Reel | Tape & Reel | Cut Tape | Tape & Reel | Tube | Tape & Reel | Tape & Reel | Tape & Reel |
关键差异点
- Wide -16 V to 80 V common-mode input range （对比 INA181 (26 V max common-mode))
- Integrated latching open-drain comparator （对比 INA181 (sense amp only))
- Three gain options in identical VSSOP-8 footprint （对比 INA200 vs INA201 vs INA202)
设计说明
Route the IN+ and IN- differential traces as a matched pair directly from the shunt pads to the IC pins. Use 4-wire Kelvin connection to the shunt to avoid voltage drops in the high-current traces contaminating the sense signal. Keep the trace length under 10 mm where possible and avoid routing near dV/dt switching nodes. Place a 0.1 uF ceramic bypass capacitor as close as possible to the V+ pin (pin 3), with a 1 uF bulk capacitor on the same supply node for noise immunity. The exposed thermal pad is not present on this VSSOP-8 package, so standard PCB layout applies.
Do not connect the shunt in the ground return path - always place it on the high side to use the full common-mode range. The -16 V to 80 V common-mode range means the IC can survive negative transients, but you must still verify that downstream ADC inputs can accept the resulting analog output voltage range. The OUT pin output is ground-referenced and can swing near V+; use a resistive divider or level shifter if your MCU ADC operates below the OUT range. Do not leave NC (pin 8) floating on the PCB - tie it to GND for best EMI performance, although the datasheet does not strictly require this.
The integrated comparator with 0.6 V internal reference allows threshold setting via external resistor divider. Calculate divider values using R1/R2 ratio such that the trip point Vtrip = 0.6 V * (1 + R1/R2) matches your target sense voltage (Vtrip = Itrip * Rshunt). For example, with a 5 mOhm shunt and Itrip = 10 A, Vtrip = 50 mV, requiring a divider ratio of approximately 0.012 - meaning R1/R2 = 11:1 approximately. Use 1% tolerance resistors for accurate trip points. Place the divider close to the CMPIN pin and add 100 pF across the divider to filter switching noise and prevent false comparator triggers.
The INA200AIDGKR dissipates minimal power (typically < 10 mW) because it is a sense amplifier, not a power device. Thermal concerns are dominated by the external shunt resistor. For high-current applications using a 1 mOhm or lower shunt, calculate I^2 * R losses carefully and size the shunt's PCB copper pour and thermal vias accordingly. A 10 A current through a 5 mOhm shunt dissipates 0.5 W, which is significant for an 0805 or larger package - consider using a 2512 size shunt or a Kelvin SMD pad arrangement with thermal vias to a copper ground plane.
合规信息
RoHS and REACH compliant per TI product page. INA200AIDGKR (no -Q1 suffix) is not AEC-Q100 qualified - choose INA200Q1AIDGKR for automotive applications. Halogen-free and lead-free per TI MSL information.
