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Sold, recycled (Maxim/ MX) MAX49921TATA/VY Unidirectional automotive current detection amplifier IC with excellent extended protection.

Product Description:

The MAX49921 is a high-precision, unidirectional current detection amplifier (CSA) with an operating input common-mode range of 0 to +70V, but provides input common-mode voltage protection from as low as -42V and as high as +80V to prevent battery backgrounding and high voltage spikes. The MAX49921 is suitable for current monitoring of inductive loads, such as DC motors and solenoid valves, where the common-mode voltage can become negative due to inductive recoil, battery backgrounding, or transient events.

The device has a low input offset of ±0.5µV (typical value) and a low gain error of ±0.05% (typical value), making it ideal for high-precision current measurement.

The MAX49921 has a supply voltage range of +2.7V to +5.5V, with a typical static supply current of 0.7mA. The device is rated in the -40°C to +125°C automotive grade temperature range and is AEC-Q100 certified. The MAX49921 is available in a 2mm x 3mm, 8-pin side wettable TDFN package with 20V/V and 50V/V gain options.

Product features:

Passed AEC-Q100 Automotive application certification

Input offset voltage: ±0.5µV (typical)

Gain error: ±0.05% (typical value)

Input voltage range: 0 to +70V

-42V to +80V protection capability

-3dB bandwidth: 65kHz

Dc common mode rejection ratio: 140dB

Gain options: 20V/V, 50V/V

Track-to-track output

2mm x 3mm, 8-pin TDFN package

- 40°C to +125°C automotive temperature range

MAX49921TATA/VY Simplified block diagram:

Applications:

Vehicle current detection

Battery current monitoring

Current monitoring of inductive loads

High and low side precision current detection

Precision high voltage current monitoring

Solenoid valve current detection

Supercapacitor charge/discharge monitoring

Contact: Mr. Chen

Email: sales@hkmjd.com

Company website: www.hkmjd.com