Analog Devices recently introduced LT1999 Bidirectional Current Sense Amplifier. This new device was designed to keep a check on bidirectional current across a wide range of common-mode. Users can avail the LT1999 Bidirectional Current Sense Amplifier in three gain alternatives — 50, 20, and 10V/V.
This amplifier is capable of sensing current through an external resistive shunt and produces an output voltage. This indicates both the direction and magnitude of the sensed current.
The resulting voltage gets referenced halfway somewhere between the ground, external or supply voltage It also comes with a 2MHz bandwidth along with a common-mode input range from -5V to 80V.
The LT1999 is ideal for keeping a check on currents in H-Bridge motor controls, solenoid currents, battery charge currents, and switching power supplies from full charge to depletion.
● AEC-Q100 certified for automotive applications.
● 8-Lead MSOP as well as 8-Lead SO packagings
● 8-Lead MSOP pinout option designed for FMEA
● <10µA low-power shutdown
● Operating temperature range from -55° to 150° C
● 1kV CDM and 4kV HBM tolerance
● Bandwidth goes from 2MHz to 3dB
● 1.5mV maximum input offset voltage
● Continuous and smooth operation across the complete range of common-mode.
● Buffered output comes with 3 gain alternatives: 50, 20, and 10V/V
● Maximum gain precision of 0.5%
● Input common-mode voltage range goes from -5 to 80V.
● AC CMRR>80dB at 100KHz.
● H-Bridge motor controls
● Solenoid current sense
● Fuse/MOSFET monitoring
● PWM control loops
● High-voltage data acquisition
● High and low-side current sensing.
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