ABS传感器霍尔

我公司开发研制的ABS传感器霍尔元件SC9344，

Features

? High sensitivity
? Two-wire current interface
? Zero speed detection
? Short circuit protection
? Insensitive to orientation
? Wide voltage working range
? Self-adjusting magnetic range
? On-chip 12 bit A/D converter
? High speed operation
? No chopper delay applications
? RoHS compliant
Application
? Camshaft sensor
? Gear tooth sensor
? Speed sensor
? Direction detection
The SC9344 is a sophisticated IC featuring an on-chip 12-bit A/D Converter and logic that acts as a
digital sample and hold circuit. A separate 6-bit D/A converter provides a fixed hysteresis. The SC9344
does not have a chopper delay. The SC9344 uses a single Hall plate which is immune to rotary
alignment problems. The bias magnet can be from 1000GS to 4000Gs. As the signal is sampled, the
logic recognizes an increasing or decreasing flux density.
The output has been designed as a two wire current interface. The IDD(off) is 4mA (Typ.) when the flux
has reached its peak and decreased by an amount equal to the hysteresis. Similarly the IDD(on) will reach
to 16mA (Typ.) when the flux has reached its minimum value and increased by an amount equal to the
hysteresis.

SIP- 4