ST IFS005V1 User Manual

Metal body proximity detector based on the TDA0161

Features

■ 10 mA output current

■ Supply voltage +4 V to +35 V

■ Oscillator frequency 10 MHz

Description

This evaluation board is based on the TDA0161, a
monolithic integrated circuit designed for metallic
body detection by sensing variations in high
frequency eddy current losses. Using an
externally-tuned circuit, device acts as an
oscillator. The output signal level is altered by an
approaching metallic object.

The output signal is determined by supply current
changes. Independent of the supply voltage, this
current is high or low, depending on the proximity
of a metallic object.

STEVAL-IFS005V1

Data Brief

STEVAL-IFS005V1

April 2008 Rev 1 1/5

For further information contact your local STMicroelectronics sales office.

www.st.com

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Bill of material and electrical schematic STEVAL-IFS005V1

1 Bill of material and electrical schematic

1.1 Bill of material

Table 1. BOM list

Component Value Description

C1 470pF SMD capacitor 1206 size

C2 470 pF SMD capacitor 1206 size

C3 1nF LV SMD capacitor 1206 size

C4 0.1ìF 50V SMD capacitor 1206 size

C5 1ìF 50V SMD capacitor 1206 size

DL1 LED diode LED diode 0805 size

IC1 TDA0161 TDA0161FP SO-8 package

L1 330µH EPCOS B82462-A4334K

M1 Screw plug 3 position Sub miniaturization plug

Q1 MMBT3904 NPN transistor in SOT-23

(1)

R1 18kΩ SMD resistor 1206 size

R2 120Ω SMD resistor 1206 size

R3 560Ω SMD resistor 1206 size

R4 2.2kΩ SMD resistor 1206 size

1. This component must be assembled on an external support PCB

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