INA381A3IDGSR
Active26-V, 350-KHZ CURRENT SENSE AMPLIFIER WITH INTEGRATED OVER-CURRENT COMPARATOR
Deep-Dive with AI
Search across all available documentation for this part.
INA381A3IDGSR
Active26-V, 350-KHZ CURRENT SENSE AMPLIFIER WITH INTEGRATED OVER-CURRENT COMPARATOR
Technical Specifications
Parameters and characteristics for this part
| Specification | INA381A3IDGSR |
|---|---|
| Accuracy | 1 % |
| Function | Current Sense |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 10-MSOP, 10-TFSOP |
| Package / Case [x] | 3 mm |
| Package / Case [x] | 0.118 in |
| Sensing Method | High/Low-Side |
| Supplier Device Package | 10-VSSOP |
| Voltage - Input [Max] | 26 V |
| Voltage - Input [Min] | 0 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 0.78 | |
| 10 | $ 0.69 | |||
| 25 | $ 0.65 | |||
| 100 | $ 0.53 | |||
| 250 | $ 0.49 | |||
| 500 | $ 0.42 | |||
| 1000 | $ 0.33 | |||
| Digi-Reel® | 1 | $ 0.78 | ||
| 10 | $ 0.69 | |||
| 25 | $ 0.65 | |||
| 100 | $ 0.53 | |||
| 250 | $ 0.49 | |||
| 500 | $ 0.42 | |||
| 1000 | $ 0.33 | |||
| Tape & Reel (TR) | 2500 | $ 0.30 | ||
| 5000 | $ 0.28 | |||
| 12500 | $ 0.27 | |||
| 25000 | $ 0.26 | |||
| Texas Instruments | LARGE T&R | 1 | $ 0.59 | |
| 100 | $ 0.40 | |||
| 250 | $ 0.31 | |||
| 1000 | $ 0.21 | |||
Description
General part information
INA381-Q1 Series
The INA381-Q1 includes both a 26-V common-mode, current-sensing amplifier and a high-speed comparator. This device detects overcurrent conditions by measuring the voltage developed across a current-shunt resistor and comparing that voltage to a user-defined threshold limit set by the comparator reference pin. The current-shunt monitor can measure differential voltage signals on common-mode voltages that vary from –0.2 V up to 26 V, independent of the supply voltage.
The open-drain alert output can be configured to operate in two modes: transparent or latched. In transparent mode, the output status follows the input state. In latched mode, the alert output is cleared only when the latch is reset. The standalone comparator large-signal alert response time is less than 2 µs, allowing for quick detection of overcurrent events. The total system overcurrent protection response time provided by the INA381-Q1 is less than 10 µs.
This device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 350 µA. The device is specified over an operating temperature range of –40°C to +125°C, and is available in the 10-pin VSSOP package.
Documents
Technical documentation and resources
