器件名称: CS209AYD14
功能描述: Proximity Detector
文件大小: 219.07KB 共8页
简 介: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 onchip current regulators, oscillator and lowlevel 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 of the LC tank. During low Q conditions, a variable lowlevel feedback circuit provides drive to maintain oscillation. The peak demodulator senses the negative portion of the oscillator envelope and provides a demodulated waveform as input to the comparator. The comparator sets the states of the complementary outputs by comparing the input from the demodulator to an internal reference. External loads are required for the output pins. A transient suppression circuit is included to absorb negative transients at the tank circuit terminal.
http://onsemi.com MARKING DIAGRAMS
CS209A AWL YYWW 1 8 SO8 D SUFFIX CASE 751 1 14 14 1 SO14 D SUFFIX CASE 751A 1 A WL, L YY, Y WW, W = Assembly Location = Wafer Lot = Year = Work Week CS209A AWLYWW 209A ALYWX
8 DIP8 N SUFFIX CASE 626 8 1
8
Features Separate Current Regulator for Oscillator Negative Transient Suppression Variable LowLevel Feedback Improved Performance Over Temperature 6.0 mA Supply Current Consumption at VCC = 12 V Output Current Sink Capability 20 mA at 4.0 VCC 10……
