CS209A Datasheet (ON Semiconductor)

CS209A, Proximity Detector

PACKAGE PIN # DIP *8 & SO *8 1 2 3 4 5 6 7 8 * SO *14 1 2 3 4 6 10 12 13 5, 7, 8, 9, 11, 14 PIN SYMBOL OSC TANK GND OUT1 OUT2 DEMOD VCC RF NC FUNCTION Adjustable feedback resistor connected between OSC and RF sets detection range.

Connects to parallel tank circuit.

Groun

www.DataSheet4U.com CS209A Proximity Detector The CS209A is a bipolar monolithic integrated circuit for use in metal detection/proximity sensing applications.

The IC (see Figure 1) contains two on chip current regulators, oscillator and low level feedback circuitry, peak detection/demodulation circuit, a comparator and two complementary output stages.

The oscillator, along with an external LC network, provides controlled oscillations where amplitude is highly dependent on the Q

CS209A Features

* Separate Current Regulator for Oscillator

* Negative Transient Suppression

* Variable Low

* Level Feedback

* Improved Performance Over Temperature

* 6.0 mA Supply Current Consumption at VCC = 12 V

* Output Current Sink Capability

* 20 m