High-side current-sense amplifiers provide wide common-mode range for auto apps

Sunnyvale, Calif.—Designed for automotive applications, Maxim Integrated Products' latest high-side current-sense amplifiers (CSAs) have a wide input common-mode range (-20V to +75V) to protect against beyond-the-rails voltages.

The MAX9918/MAX9919/MAX9920 are well suited for monitoring inductive loads, such as motors and solenoids, where common-mode voltages can become negative due to inductive kickback, reverse-battery conditions, or transient events.

The MAX9918/MAX9919 feature a ±400microvolt (max) input-offset voltage for precision monitoring, and the MAX9920 provides ±900microvolt (max). The MAX9918/MAX9920 feature adjustable gain that is set by an external resistive-divider network, while the MAX9919 offers fixed gains of 45V/V or 90V/V. All three devices operate as unidirectional amplifiers when VREFIN = GND, and as bidirectional amplifiers when VREFIN = Vcc/2.

The MAX9918/MAX9919/MAX9920 are fully specified over the -40°C to +125°C automotive temperature range and are available in an 8-pin SO package.

Pricing: Starts at $0.85 (1000-up, FOB USA).
Availability: Now.
Datasheet: Click here.

Maxim Integrated Products,

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