LDC0851
LDC0851 is Differential Inductive Switch manufactured by Texas Instruments.
Features
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- Threshold tolerance: <1 % of coil diameter
- Temperature stable switching operation
- Average supply current: < 20µA at 10sps
- Shutdown supply current: 140n A
- Push-pull output
- Resistor programmable threshold
- Insensitive to DC magnetic fields
- Contactless switching operation
- Sample rate up to 4ksps
- Supply voltage: 1.8V
- 3.3V
- Operating temperature range:
- 40 to 125 °C
2 Applications
- Event Counting
- Fan Speed RPM Detection
- Incremental Encoder / Knob
- Open/Close Switches
- Home Security and Tamper Detection
- Industrial Proximity Switch
3 Description
The LDC0851 is a close range inductive switch ideal for contactless, simple switch applications such as presence detection and event counting.
The switch is triggered when a conductive object es within close proximity of the sensing coil. Hysteresis is included to ensure a reliable switching threshold. The differential implementation prevents false triggering over environmental factors such as temperature variation or humidity effects. The LDC0851 does not require an MCU to operate, allowing for a simplistic solution.
Inductive sensing technology provides reliable and accurate sensing even in the presence of dirt, oil, or moisture making it ideal for use in harsh or dirty environments. The solid state switching eliminates the failures due to reed, mechanical, or contact switching. Unlike petitive products, the LDC0851 does not require magnets, nor is it affected by DC magnetic fields.
Package Information
PART NUMBER
PACKAGE(1)
PACKAGE SIZE(2)
DSG (WSON, 8)
2mm × 2mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
Approaching Metal Target dswitch
Sense Coil
LSENSE
Sensor Cap
Reference...
