CS209AYD14

更新时间： 2024-01-05 14:09:05

品牌	Logo	应用领域
樱桃 - CHERRY		/
页数	文件大小	规格书
6页	170K
描述
Proximity Detector

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CS209AYD14 数据手册

CS209A

Proximity Detector

Description

Features

The CS209A is a bipolar monolithic

integrated circuit for use in metal detec-

tion/proximity sensing applications.

feedback circuit provides drive to main-

tain oscillation. The peak demodulator

senses the negative portion of the oscil-

■ Separate Current

Regulator for Oscillator

■ Negative Transient

The IC (see block diagram) contains two lator envelop and provides a demodu-

on-chip current regulators, oscillator

and low-level feedback circuitry, peak

detection/demodulation circuit, a com-

parator and two complementary output

stages.

lated waveform as input to the com-

parator. The comparator sets the states

of the complementary outputs by com-

paring the input from the demodulator

to an internal reference. External loads

are required for the output pins.

Suppression

■ Variable Low-Level

Feedback

■ Improved Performance

over Temperature

The oscillator, along with an external

LC network, provides controlled oscilla- A transient suppression circuit is

tions where amplitude is highly depen-

dent on the Q of the LC tank. During

low Q conditions, a variable low-level

■ 6mA Supply Current

included to absorb negative transients

at the tank circuit terminal.

Consumption at

V_CC= 12V

■ Output Current Sink

Capability

Absolute Maximum Ratings

20mA at 4V_CC

100mA at 24V_CC

Supply Voltage................................................................................................24V

Power Dissipation (T_A= 125¡C).............................................................200mW

Storage Temperature Range....................................................Ð55¡C to +165¡C

Junction Temperature...............................................................Ð40¡C to +150¡C

Electrostatic Discharge (except TANK pin)................................................2kV

Lead Temperature Soldering

Package Options

14L SO

Wave Solder(through hole styles only)...........10 sec. max, 260¡C peak

Reflow (SMD styles only)...........60 sec. max above 183¡C, 230¡C peak

OSC

TANK

Gnd

N.C.

V_CC

Block Diagram

OUT₁

N.C.

DEMOD

N.C.

OUT₂

N.C.

DVBE/R Current

Regulator

VBE/R Current

Regulator

300mA

Oscillator

OSC

4.8kW

23.6kW

8L PDIP & SO

OSC

Feedback

OUT

OSC

TANK

Gnd

Neg Transient

Suppression

V_CC

COMP

DEMOD

OUT₂

DEMOD

OUT₁

TANK

GND

DEMOD

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: (401)885-3600 Fax: (401)885-5786

Email: info@cherry-semi.com

Web Site: www.cherry-semi.com

Rev. 3/11/99

Company

12 3 4 5 6

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