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The LT1999HS8-20 is a high-speed and precise current detection amplifier, specifically designed for monitoring bidirectional current within a wide common-mode range. The LT1999HS8-20 offers three gain options: 10V/V, 20V/V and 50V/V. It has the following technical parameters:

Amplifier type: Current detection

Number of circuits: 1

Output type: -

Slew rate: 3V/µs

-3 dB bandwidth: 2 MHz

Current - Input bias: 137.5 µA

Voltage - Input compensation: 500 µV

Current - Power supply: 5.8mA

Voltage - span (minimum value) : 4.5V

Voltage - span (maximum value) : 5.5V

Operating temperature: -40°C to 125°C

Installation type: Surface mount type

Packaging/Housing: 8-SOIC

The LT1999HS8-20 detects current through an external resistive splitter and generates an output voltage that can indicate the value and direction of the detected current. The output voltage takes the intermediate voltage between the power supply voltage and ground as the reference potential, or an external voltage can also be used to set the reference level. The LT1999HS8-20 features a 2MHz bandwidth and a common-mode input range of -5 V to 80V, making it suitable for monitoring the current in H-bridge motor controllers, switching power supplies, solenoid current, and battery charging current (from full charge to depletion).

Application scenarios

High-end or low-end current detection

H-bridge motor control

Solenoid current detection

High-voltage data acquisition

PWM control loop

Fuse/MOSFET monitoring

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