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The LT1999HS8-20 device is a high-voltage, bidirectional current detection amplifier launched by (ADI), specifically designed for a wide common-mode voltage range. This amplifier has the following core characteristics:

Buffered output with three gain options: 10V/V, 20V/V, 50V/V

Gain accuracy: 0.5% (maximum value)

Input common-mode voltage range: -5V to 80V

AC CMRR > 80dB (100kHz)

Input offset voltage: 1.5mV (maximum value)

-3 dB bandwidth: 2MHz

Achieve smooth continuous operation throughout the entire common model enclosure

4kV HBM tolerance and 1kV CDM tolerance

Low-power turn-off: <10µA

Operating temperature range: -55°C to 150°C

8-pin SO (narrow body) package

The AEC-Q100 has passed the automotive application certification

Explanation

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.

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 also 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).

Typical applications

The LT1999HS8-20 amplifier is widely used in the following application fields:

High-end or low-end current detection

H-bridge motor control

Solenoid current detection

High-voltage data acquisition

PWM control loop

Fuse/MOSFET monitoring

Basic parameters

Product: LT1999HS8-20

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

For the exclusive quotation of your LT1999HS8-20 current detection amplifier, please inquire at (www.hkmjd.com).