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INA139NA/3K High-Side Current Shunt Monitor Features High Accuracy Wide 2.7-36V Supply Low 90andmicro;V Offset +85anddeg;C Rating Fixed 3k Gain SC70 Package Bidirectional Operation and Excellent DC Performance
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Features
andbull; Complete Unipolar High-Side Current Measurement Circuit
andbull; WideSupply and Common-Mode Range
andbull; INA139: 2.7 V to 40 V
andbull; INA169: 2.7 V to 60 V
andbull; Independent Supply and Input Common-Mode Voltages
andbull; Single Resistor Gain Set
andbull; LowQuiescent Current: 60 andmicro;A (Typical)
andbull; 5-Pin, SOT-23 Packages
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Applications
andbull; Current Shunt Measurement:
andnbsp; andndash; Automotive, Telephone, Computers
andbull; Portable and Battery-Backup Systems
andbull; Battery Chargers
andbull; Power Management
andbull; Cell Phones
andbull; Precision Current Source
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Description
The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, high-speed, low quiescent current, and tiny SOT-23 packaging enable use in a variety of applications.
Input common-mode and power-supply voltages are independent and can range from 2.7 V to 40 V for the INA139 and 2.7 V to 60 V for the INA169. Quiescent current is only 60 andmicro;A, which permits connecting the power supply to either side of the current measurement shunt with minimal error.
The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.
Both the INA139 and INA169 are available in 5-pin SOT-23 packages. The INA139 device is specified for theandndash;40anddeg;C to +125anddeg;C temperature range, and the INA169 is specified fromandndash;40anddeg;C to +85anddeg;C.
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INFORMATION
| Category | andnbsp; | |
| Manufacturer | Texas Instruments | andnbsp; |
| Series | - | andnbsp; |
| Packaging | Tape andamp; Reel (TR) Cut Tape (CT) Digi-Reelandreg; | andnbsp; andnbsp; andnbsp; |
| Part Status | Active | andnbsp; |
| Function | Current Monitor | andnbsp; |
| Sensing Method | High-Side | andnbsp; |
| Accuracy | andplusmn;0.5% | andnbsp; |
| Voltage - Input | 2.7V ~ 40V | andnbsp; |
| Current - Output | - | andnbsp; |
| Operating Temperature | -40anddeg;C ~ 125anddeg;C (TA) | andnbsp; |
| Mounting Type | Surface Mount | andnbsp; |
| Package / Case | SC-74A, SOT-753 | andnbsp; |
| Supplier Device Package | SOT-23-5 | andnbsp; |
| Base Product Number |
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Drawing
Our advantage :phones, PDAand#39;s, notebook comput.ers
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