ChongMing Group (HK) Int'l Co., Ltd |
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INA168NA/3K Power Path Management IC Current & Power Monitors & Regulators Hi-Sd Msmnt Current Shunt Mntr Crnt Otp
1 Features
Wide Supply and Common-Mode Range
INA138: 2.7 V to 36 V
INA168: 2.7 V to 60 V
Independent Supply and Input Common-Mode Voltages
Single Resistor Gain Set
Low Quiescent Current (25 μA Typical)
Wide Temperature Range: –40°C to +125°C
5-Pin SOT-23 Package
2 Applications
• Current Shunt Measurement: – Telephone, Computers
Portable and Battery-Backup Systems
Battery Chargers
Power Management
Cell Phones
Precision Current Source
3 Description
The INA138 and INA168 (INA1x8) are high-side, unipolar, current shunt monitors. Wide input common- mode voltage range, 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 36 V for the INA138 and 2.7 V to 60 V for the INA168. Quiescent current is only 25 μA, 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 INA138 and INA168 are available in SOT23- 5 and are specified for the –40°C to 125°C temperature range.
Device Information
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
INA138 | SOT-23 (5) | 2.90 mm × 1.60 mm |
INA168 |